building ,(construction) 1956 · ‘'domestic building" means n building constructed or...

14. Tenement houses create a special problem for the designer, largely on account二 of their narrow frontages (usually only 15 :feet), thei芷 great depth and high density of occupation. To avoid the general minimum requlrefnents of these regulations from being unduly restrictive‘ tenement houses are treated separately in regulation 42. The principal

, concern of these provisions is to ensm·e adequate ]ight and air, and kitchen accornmodalion; in all other matters tenement houses must comply with the general regulations .

. M BUILDING (PLANNING) REGULATIONS』 1956

Part T' ll ~Ten!]Jorαγv Buildings.

15. A new class of building in this legislation is created by regulati on 的 which defines 'temporary building', and by thi~ definition includes nol only buildings constructed of short-liv副i materials but also more solid strnctures built on temporary permit. Se的ion 101 且nd the Matshed Regulations under the former Ordinance provide the basis :Eor the present regulations dealing with contractors’ sheds .(regulations 49 to 62). To bring home to building owners the impermanence of the bui]dings they in tend to erect upon temp or且ry permit, such buildings have been iuclud叫in this class and requii-e the Building Authuri旬， s wrilten permit under i·eg-u!atlon 47, which permit may specify the per.iod of its validity. In the 巳ase of contradors' shed且 the Building Authority is given an 叫lditional measure of control in that he may require the contractor to make a deposit up to $500 as security :for the fulfilment of his obligations.

Part l'llf 'l'imber Yards.

JG. Since timber yards are particularly the concern of the building tratle, it has been thought proper to itH,J11rle thρprnvis﹛rm 會 fηγ 仆，終ircontrol in these regulations. Since, however, these regulations are not concerned with building works as such, it is necessary to provide penalties for their contravention. (Regulation 59).

pα rt IX-llo叫·din戶， Shoring, Scαffolding and Plα tfoγms.

l'I. Hoar<lings, etc. are required both tor the safety of the public where builcling works are earned out near streets and for the safety of workmen employed on the site. Under regul且tion 63, the Building Authority may erecl and m且intain the necessary hoardings, etc., where the bnilding owner or permitee fails to do &o, and may recover the cost fl om the defaulting party. As in the case of contractors' sheds, the person erecting hoardings, etc. may be required, under regulation 65, to make a deposit up to $500 as security for the compliance of these regnlations.

HONG KONG

BUILDING ,(CONSTRUCTION)

REGULATI。NS, 1956

Published in Supplement No. i! to

Gove門Lment Gazetts No. tW of 4.lh .May, .1958.

(Secretariat 1/1/·141/52)

tVAJO

、、、、－ ..,.~

車

BUILDINGι （CONSTRUC'l'ION) ItEGULATlONS, Hl5fl

No. A. 38.

BUILDING (CONSTRUCTION) ~EGULA'l'IONS, 195H.

Regulation.

川、4（机

TABLE OP CONTENTS.

PA}.l'r I.

General. 1，α （／ e.

..

‘

4’

，4

”，“904

倍

Citation

In terpxetation

Materials

British Standard Specification or British Sta11dn1叫 Code ot Pra巴t!ce

Permissible stresses not to be exceeded

Dispersion of load

Overloading

Pemo!itions

自

。

.. whυ州州叮叮月11

「f

I

只

PART ll.

Mater﹛αls

。 Hrirks and bnilding blocks

1 日， Cement

11. Lime

12. Sand

13. Red earth llJ 14. ·water 111 1 日， Cem凹1t mortar ﹝廿

1 日， Cement Lime mo的ar 1U 17. Lime mortar l {)

18. Aggregate e 呵，． lJ

19. C口ncrete ... ., .......... 20. Material$ for damp』proofing• 14 21. Timber

且，’，．‘ l4

PAR’E III.

Loctds. 22. Win吐 effects

' ．．．．，．．．．．冒 J 4

2日。 Horizontal load 唔，．．．．．．’，．．，．．‘ 17

24. ’:rest load 1'1 25. Notice as to load a ’‘ J 日

(' ~… ’. ’1·

’一一－一一－二豆

，、

3 BUILDING (CONSTRUCTION) REGULATIONS, 195G

!'cir; a.

'H 34 1，后

nhu

門fOMUQunυAUnu

odηdQdQdA

“Iloj1

4 l 1

吵，扒”已

1仆心是凡司

vh

Aui

、

4teu14

‘

AqAMZ

Ue17ulal'ian.

55. Parapet walls

56. Boundary walls an! fences

57. Definition of slenrlernes寫 ratio

58 ‘ l\l[aJt:imurn compressive s七resses in walls or piers of bricks 01

building blocks

Maximum compressive stresses in walls and pi era o.f eonerete ..

Eccentric loads and lateral forces on slender wtdls

Panel walls

Party wall目 to be carried up to roof

'l'imber not to be built int口 walls ..

I } amp-proof courses

‘.

59.

60.

81.

62.

63.

64.

PAR'l' VIL

Firepluoes, flues αnd chimneys.

l!,ireplaces and stoves to }iave he且rths

Fireplace openings

Fireplaces to have flues

Chimney stacks to be carried above roof

Combustible materials in proximity to "hirnneys

Chimney shafts

Open cooking slabs tu have hoods

[)eilings over fireplaces to be protected

65.

88.

8'7.

fi8.

(jg,

'7{)

于1.72.

Par11•.

nE

、hυn

臼

n乙

υωAUZA且，

41

，主可

inJ4220ρ

13UILDING (CONSTRUCTION) REGULATIONS, 1956

Fo1.＜πdαtions ι

PAR'l' IV.

Foundations

Construction of founuations Permissible pressure on soil

Permissible Jires3ure on concr且te

l' iling·

Pressure from adjacent ground

F’oolings

He例lfαlioη －

20.

2'1.

28,

2日，

:10.

Bl

月Z

2

PART Y.

AUavhυ內HV州EHUnHUP叭”門1

9ω

句，但qh

吵μ

吟，“ηL9L

."lit~~ 旬，1d fiont-,,

Covering· of sites

A reaE; elc. to he paved

Cerlain floors to be impenneal] le

Lo、vest Hυor tοbe above grυuntl ﹞ evei

Ventilation below wood floors

（）。”的ruclion of woo<l floors

Skirting

PART VJ

14rouo7

們的

QU

I

-

3111

!

ijltlj1io

:

vbkuHH A－

AO育必

μYJ川、

PAH'1' VIII

Roofs to be covered

Roofs to be we且ther proof ..

Accessible roofs to have parapet or railings

Hallow ceilings

IIυ ofs.

78.

74.

75.

76.

吐n

Sttuctuml

PART IX.

Str1wtu1‘al use of Steel, Rei倉iforced Coησγetv cind Tirnb~γ『

Steel framed and reinfor~ed concrete stuctures. timber

守7.

刊1ηt

句donQυ

。“。中

OUPM9

“

2日

內υ1A1A

砂血。“。

μoiuQυd

倍

。心

quqυnonυqυQUQ

仆”。d

Construction and bonding of walls Building·s over 4 sloreys or 48 feet in height

Applfonlion of re1rulations

Rules for measurin且， height of storeys and heigh!. of walls

Rules for measuring· length of walls

'l'hickness of external walls and party walls of buildings olh叭，than public huilding·s or buildings of the warehou自由 class ..

'l'hickness of external and party walls of public buildings and buildings of the warehouse class

'l'hiekness of internal loacl bearing walls. Partition waUs

Recesses and openings

Loa.cls on walls

Corbelling and overhanging work

’l'hickness o.f walls where difference in ground levelsι

'l'hidmess of extern11l walls of "ertain small buildings

navity wnlls .

Glass block walls

wαlls a祝d pie內

'l<}

4 l

'1il

14

司 r,.

46.

2

.’

！’。

l

ηton

仇U

仇UIA

句uqH4

嚕

，月244AAAMEyhυ’的UMVhυFhυrh”

。-<.)

_) r .--<; （于＼

4

耳＇F于 f w口，已司’，，J’，1，「 f ,.,,,,,,” ’.,,.,,.,•, 戶可比，．•,' 'Jf.＇，：﹒仙........’

3 ，’，r叫一，一，.·.. ::.-.· •. －丸，＇.·＞1卡’，＇＂＇~：’，’山再﹔白f晶乍． ι也 ,~

J，片γ…t a 心干干.•J,•,-, • . ~·－ • ::...:e:.：.正如，：；...：.~；：..：.位叫，. ~，，.＿， -u J紗，跡。已 V ’，今

BUILDING (CONSTRUCTION) REGULATIONS, 1956

Reyu/nUo札PART X.

.Page. Whaγ甘e且， F﹛的屯的的irl .~eα－walls.

'I缸， \.Yharves, piers tmd sea-walls ... 4.7

PAR'r xr. Retai1iino Wall趴

79. M' aterials ’．。＂’. . ..• . . . .• . . . " 47 日。. Fo11nda1.ions ..’.......-‘.. ＇＂、. .. . ... 47 81. Brickwork . . . ...,’,.. . . 47 82. ﹞叮asonry . . . . . . . . . . ..，也 47

83. Bond courses require此．．．，’，吐7

84. We1~p holes e舟， t﹒吟，’的

8 fi. Coping .. . .. . . . .13 月 fi. Su!'face channels .. 48

PAR'l' XII.

Wells.

87. Permission required from Bull ding A uthorily to sink or re-open wells . . .. . . ..‘．．一. .. ... .. .. . 48

88. Wells prohiVited in certain places ．．．’！．．。吐8

日9. Wells to he of 間的巴ient depth 叫d diameter 旬 ••. 48 !JI) Wells to be lined and filter req11ired .. . . .... l ••• 49 9l. Aecess for cleaning and close fitLing eover required .. .. .. 4日

92. r!hannels and paving- to g'round surface adjoining top of wells required ‘’,.. •.• ••. •.. . ............旬，. 49

93. Parapet wall r閃uired where water 1s drawn by a bucket ... . .. 49

PART XIII.

Vire Res狗叫no Construr.tion.

甘4. InterpretRtion .. . . ..、. . . .’,.. .. . . .. . 49 9fi. Adj aeent buildings ... .. ... . .‘. ... ... . ......、 50

Q白， El剖nents of conah\lction within buildings ..‘... .. ,, ..’‘ 50 97. Adjoining compartments to be separated d .’,,. .. 52 98. Staircases ... ... ... ..’,.........’,. . .. .. 52 99‘「r'opmost atoreys .. .. . .. . ..’‘. ... . . ••. ... ... ... 5S

刊吋叮叮ti"e: comp1utments or enclosing r~


BUILDINGS ORDINANCE, 1955. (No. 68 of 1955).

BUILDING (CoNSTlHJCTION) RE＜.； υLATrUNS, i956.

PART I. General.

可 1 ‘ These regulations may be cited as the Building (Con 司 nilalion.

structinnl Regulatio11s1 1956.

宜， In these ree·ulations. unless the context otherwise rem1ires. Inter戶

。

war臼 and expressi7>ns ha吋 the meani可 attrihutit<l to 叫rn hy m川ioJi.the Buildings Ordinance, 1955, and -

“ base" \n relation to n wall, means the under side of thnt p扎I I

。f lhe wall ·which immediate! v rests on the fοotine-s u1 foun {1 , 0

ation or ollwr structme hy which the wall is carried ;

川 chimney’， means a conslruction enclosing a 位ue and altad1e<i to 心r forming part: of a builrling;

' t 仁himney shaft ’, means a canstτuctiun 日 ot b 。nd們 l l!\((l 社 liui!c!

ing, enclosing a vertical flue ext!':nding to a greater height above its topmost lateral support Urnn 6 ti 111cs its 1.-nst hori:wntat dimension measu 「eel at 一

(i) the base of the chi1肌肉＇ shaft where it is not supr1 （﹜ rl 叫

above the base’。r(ii) the le村l of the topmost late叫 S叩porl;

“ chimney stack ’, means such part 叫 a 仙irnney (or a ﹛’。mbination

of two or more chimneys）的 is not within a building ; "dead load,’ means the weight of walls, floors, roofs, partit io1”

and other permanent construction ;

也‘ dividing wall ,’ means a wall which is required to be taken into account in pur早uance <)f regulation 44 in <leeming anollw1 wall to be divided into distinct lengths;

‘' domestic building" means n building constructed or intended to be used for h且bitation ﹔

''external wall＇’ means 且n outer wall of a building not being a party wall, ev巴n though adjoining a wall of another building ;

＂刊ue ＇’ means a duct through which smoke or other products of combustion or fumes from any cooking apparatus or stove

· itf?lprJ <l iγ．。再ss or are Intended to pass for the ' . , ..;

J＼呵

B UILDJNG (CONSTRUCTION) REGULATIONS, 1956

''impos巴d load" means load olh ﹛~r than dead load and includes wind pressure i

"incornliuslibl e material" means 且 ma！﹔巴rial which neither burns nor gives off inflammable vapours in sufficient quantity to ignite at a pilot flame when heated in the manner soecifiecl in the approp巾le 1> I

tion 476 : r932 and ‘ s<;oml] ustil] le mat巴ri 且i ’’ shall be construed accordingly ;

"lid'eral support ’, l n relation to a wall or pier means support· which resists movement in the dir 日ctlon of th 日 thickness of tlie wall or in the direr了fion of th 日 thicirness or width of a pier;

"load bearing" in l巴﹞且lion to a1] Y }rnrl of a building (includingL!ie foundation) rn朗的 a叮 such part lJearing a load othe~· than that due to its own weight and to wind pressure on its own surface;

什 Urdinance ’， means tlte Buildings Ordinance, 1955

川 part 1ti un 、vall" means any internal wall nol !wing a dividing wall, external wallυl pany wall;

川pa rt y 九vall" means a wall fuJ1ning pan oi 且 building- aud us巴【i0 I 印的tructcd to i月 1間d for the ser〕a圳ion of adjoinin litiildings 1』 elongi1 tr} di 仟巴rent owners 叫 occnpied … constructt刊l or adapted to be occupied by different persous ;

“ l刊的l ressed concr巴te" means concrete in wliicl1 predetermined stresses are inciuced lu cou11teract the stresses <iue , to dead nncl illlposed load for the purpose of eliminating· 。r decreasine the tensile stresses in C[

''1] ublic i>uilding ’’ means ~ Luildi ng nsed or intended to be nsecl either ordinarily or occasionally as a pl在ce of public worship …for instruction other than a place so used and being part of. a domeslic building, a hospital 』 a restaurant hnvine- a m且ting capacity for more than mo perso間， a place of pub lie entertainment or a place of public assembly to which persons a re admitted by ticket or otherwise ;

''reinforced concrete'' meuns concrel巴 not inferior to the desi!!nated Grade III in regul且lion l9, reinforced by reinforcem~nl complying with the provisions of paragraph （ι）， (b ）。r (c) {if suh-regulatio1﹞（ 1 ）。f regulation 77 ;

，過，，坦

BUILDING (CONSTRUCTION) REGULATIONS, 1956 7

“ shell lime ’, means lime formed b ]r burning· sea sh 巳l ls 01 other like marine 也leium deposits;

"storey-height" for the purposes of reg·uhilioas 57--60 means !lie h eig·ht u[ lhal parl uf a 、;val! or pier which is between the~

level of one lateral support and the level of tl1c lateral support next above or (if there is no such lateral support above) the top of such wall or pier_

3. All materials used in the construction of a11y building llfaterialn shal l一

。z) be of a suitable nattll'e and quality for the purp。后es Int which they are used;

(Ii) be ac

(c) be applied 』 used or 位x自d so as 且d吧quately tυ ﹛ierfc﹞ rm I lie ‘ functions for which they ar巴 designed,

4. 'l、he Building· Authority may permit in writing s11Ljtoclβ川lish

~（﹔ suet: ：~unuitions a月 he may c叫υrse tL叫﹜﹝i t:w \JS~υf ;: 11 )' ~；：：！：： 1\f，：，~＇ type of material or any 11\ethocl uf mixing or preparing- matrrial 可 Liou 01 。r of ap~ly呵 using 。r fixing mat巴山Is whi仙 confonns with n Jj ：~＼＇.~1,111, British Standard 月pecification or a Bntish StaJl(iarli l ＇（）＜［（~ ()! Code of

！》 nil汁，＼（＇.［＇.Practiιe prescribing the quality of material or standard月（﹜︱

workmanship :

Provided that in the event of wore than 0rw such Standa1 ti or Code having been issued, the type of material or method used conforms with the latest edition and nny published amendments thereto,

6. Every building shall be so couslructed as to be capable 1＇ ~1 心叫 SU啪ini呵i叫叫 and t叫load withe>ut ex(;eeding th巴且ppropriate limitat i 正﹜ n 早 of pern】 issi.bl白 t《I lie

exc~e吋eelstresses.

6. ·where load is transmitted through pl且 in co11crele, llispersio 札brickwork or other similar material, the angle of dispersion ol of loa {1 the load through that mat巴rial sball be taken as not more than '\5 degrees with the direction of the load,

7, No building shall be subjected to load b叮rond its pi oper Ove1 be·aring capacity: loading·

"

＂ ι

＇•）、

J

IHJ/ LDTNG (CONSTRUCTION) REGULATIONS, 1956

Provided tliat this 1egulation shall not apply with respect to n11y load which majr i時 i·equired or permitted by the Building .r\ IJ I) t“l ity foi· the purpose of 1廿ting.

emoliUOHS 8. Wh軒re demolitioas or other building works are carried ;1u1 which may affect adversely nny adjoining building, it shall rw I﹜I臼vi 《.led wit:}l ac shall su }Jmit his certificate in accord且nee wi i}l the E}rovisions of j佇gulati﹛﹜ fl 2 {J of th 缸 βnilding (Admi11is叫i叫 Re~ulations.

PAH.T II.

Materials.

~）~，品﹔u<l ＇.尬， ι 品l －~t~t~~－：d b:i ：~：， ~1：~u~~~i~~1；：~s:J~~~~e~h~~~：﹔t﹔00~~~出tncr﹔~mbusti~le material of like har山ess and 加叫Jility and shall p。spess r問istance to crushing not less than those respectively sper:1iled in fable I.

(2) Ca:.>t stone and concrete blocks shall be cured at normal le叫一ratures until they attain the strengths specified in Table I and in 戶口y case for not less than 4 weeks.

（﹔：）﹞可Vf主f﹜＇ bt屯

sl,i且pe and 叫1可阻γ ~4) \¥here bricks and building blocks are formed with

’叫 f ＜嗯， hollows or perforations一

· t- ~n"lties, l:ig,llows or perforations shall ，叫，﹔~·t，門v huilding


(vi) such bricks or buildiug blocks I叫）＇ l咒 used in load bearing walls only－一(11) in single storey buil仕ing向

(/J) in two storey domestic buildings, ur

( c} for enclosing the top stor’ ey of a building.

'l'ABLE r. Hγicks a-nd building blocks.

一一一一一一一

叫P川 brick or Res1圓tan~e to crusi~i~g in lbs. JJer squa r的。r

、.Yhelher solid gross horizontal arei1 Purpose or hollow

一一一一一一一一、－－一

Exlernαi or internal Solid 1 ，品。﹛）

(lo a是 bearinp;)

External or internal hollow '150 (loa吐 bearing)

External b {panel) 叫d or hollow I (;()()

(\!On-load earing}

Internal d(p~~＂！＿~~~；／ solid or hollow I 200 (non-lo a

10. Cement shall not be inferior in strength, soundness and Cement, dura:bility to the current British Standard Specification for Portland Cement.

11. Stone lime shall consist of- Lime.

(a) quicklime formed by burning a natural rock o 「 other耳uitable mat巴rial at such a temperature that it will slake

.. , when brought into contact with water, or ii ＂＇~J '_J;,,..,,,. in the. form of a fine dry powder

,, ..，什﹔、，，：；~ ~＂ lo proc

,, ＇、

1L BUII.JDING (CONSTRUCTION) REGULATIONS, Hl5G

(2) Lim巴 mortar with a base of shell lime shall not: I} e us巴din tl~： I c叫ruction 叫 any external j叫 bear川 wall.

Note: -Not mo1·e than 25% of the 。lume of sand may be

γenlaced by 且u equal ~~lutne of red earth.

A1;gr包）！： ~＇ t 巳．

1 to 3

18. (i) Aggregate for plain concr 巴t巴日ball consist of s且【1 ﹛！ '

well 川 bricr、ther ma陀eri且l of wl叫ich the Building Au伽叫 y Pl :hall be so g叫ed as to 叫ce a sou叫 con叫巴

AggregalP. for reinforced c· ﹛﹜ 11 仁Ieie sh<Lll

i:onsist of sand an cl crushed stone; i〕巴 baid，方I JU!lζ ：； !ld <luiab ＼ ιand reasona!Jl)' ··lean 3 刊 c!free~ f 「0111 clay，。rganicυr oth<'r h ﹔1 「mfu I ma ti er ; 仙g fim、 agg呵圳 be 叫別ch size 刊1at al I州內＼WlcPnt by weight will pass a 3/ 16 inch mesh s~~een, an 叫 lγmore tlian 15 P「 r cent by weight will pass a 叫 O. I 〔）。 me~； 1\,

British Stanclard Specification;

~2)

（μ）

(/1)

（，、

.

1

l

TABLE III. Lime 1noγt叫：

Stone Lime

BUILDING (CONS'I'IWC'I'ION) REGULATIONS, 1956

(d） ιonlain no greater proportion of fine clay, silt or fine <lust (being such clay, silt or dust as will pass through a O.OOI i吋ies sieve) ti山1 5 per ce叫 by weight in the case of natµrafly occurring- sand, and IO per cent by weight in the case of crushed stone.

(2) Sand shall contain no harmful material in sufficient quantity adverse ！γto affect th巴 hardening strength or durability of the mortar, plaster or concrete, or in t﹜1日 cas巴。f reinforced concrete lo attack lhe reinforcement.

) ( 1

13. Red earth shall consist of decomposed rock containing not mor日 than 15 per cent of clay. It shall contain no harmful {}iat.erial in sufficient quantity adversely to a仔自己t tlie hardening· slrenζLl1 or du rnbility of the mortar or plaster.

Herl eurtli.

- 1 1 尸，－

l ya I r-

a I I

15. (r) Cement mortar sh且11 lie composed of cement and 叮and 111 tile proportion of Olle volume of r:ement i 仆『1川 IPSS tlJ!lf'. 2 11u1 lllore llian 4 volumes of sand.

(2) Liw 巴 or re1l e~叫h may be added to such cement mortar i11 the prnpmtion r}f not more than 25 p巴f cent of the C巴ment in vol um c.

free from water fresh clean be 叭Tater shall 14. 1natter

Witle1

1 ：吧，11e11 t lll<lrta r.

\Jei n E 仁oarse aggregate, he of such size that- ' r ot not morr than IO per cent by weight will pass a ;l / l {)

inch mesh screen . (ii) at I 巴ast 951 P巴I 叫

f >F\/size 』 inch less th且n the m1nimum lateral {list am、﹝~

t】 et司巴n 」nfo叫cover ; whichever is the smaller，。r in the case of solid

slabs will pass i inch mesh scr~en ﹔ he so graded as to make a dense concrete.

) JU (

19, (r) Cpncrete shall be composed elf aggregate mi.xed with Coner 日te.

cement and water.

(z) The fine aggregate measured separately.

Th巴 proportions of cement to aggregate shall b廿一

) puw

f

shalt aggregate coarse and

（α） those specified in T且bles IV and V for the appropri<1!<

grade of cqncrete; or

(3)

jlll

-

lili

---

Hi. Cemellt lime m日rl且 r shall lie composed of cemenl, sand and stone lime or shell lime, mixed by volume in the proportions .sbown in Table I I.

，；訓 JJf'lltr .i1ue Jl,l.,rt.ai

Maximum ratio of the volume of cement to the volume of sand

Sand

叫： Ii竺

T a T

Hm E

悶

L-m

Bzt AJU T

肌間←

“一

-. 一－

M一

eAM

-

mI

一

－YI

一，一一仙一

一－

M一

CementLime n已ment

1 : 12 where stone I lime la used.

1 : 9 where shell J lime is used.

4 2 1 4 1

Not•: --Not more than 26'1o of the volume of Band may be replaced ' by an equal volnme of red earth.

17. (1) Lime mortar shall be r.omposed of stoh巴 lime 01 sliell lime, sand or red earth mixed by volume in the proportions shown in Table III.

f, l!lH'.

mortar

‘,

/

"<!

2 1

BUILDING (CONSTRUU'I'ION) REGULATIONS, 1~56

(/J) ~n( pr咖心叫帥的 those sp州ed in Tables 川ncl

Provi也d '.hat t_he maxi心m1 permissible comp叫sive stress for

z：﹔；t~／﹔r：：兒。1~口：1：﹔e品﹔~o~﹔1 ~e~%~；：﹔b~：~~n~~r：；﹔工叫ses for con叫E 叫 the two 叫叫 specified mi芷e；；凱

1 c J l i：：﹔l﹔：i：叫i﹔﹔f：且：：：：a﹔：f：心﹔：~＇ 0:0 t:;:

i﹜計u：~~ieo﹔otl~；~no： ﹔拉法r記te ~hall ~o~：rnlly b巴 tw i c e

:vo】『l古：~：~γan be pro

﹔：1~d~r ﹔﹔：1」 pr o川 of· coarse aggregate 叫 be c【『

f~＇.：；~＇.：：﹔＇.~f~f!J~：﹔i：：江1巳：~；；﹔Icc』nr:re e, le may permit su巳Ii prupo1tions for tlrnt case.

(6) （叫） Concrete desi~nated as Grades I-V .. J:; (I﹞οwn as ＇＇﹛irdin且﹝y 【﹔oncrete.

( /,) Concrete designated as Grades I A」IIA ﹒ iM巾 V a刊 11a_ving the resista川 to ~~u1~＇. i~0~－1立ctiι~or 叫ch 叮叮 tn the1 J仙olumn of 叫l Table shall I>irnown as ＇＼~ual1t﹜r A' concrete.

exce~~／ t ；~~~e ：~~：，＇；：~td ~~ ~~~﹔﹔r~lS~﹔：a~ortl~~a：~nn~r~~~1c!=t~們：CJ﹔﹔2元﹔：﹔尤﹔：：~~1；~. placed 叫附riced i心

（的 Coner悅 shall-

。z) be deposited before setting has commenced and without 的gregation of the materials:

(11) be a叫Ua的F con叫i_dat呵 by tamping or 叫r otb巴「﹔﹔1：﹔：：：ni﹔c~：﹔：ri：~~irat

(c) remain undistt一id】巴【i after 【了onsolidation until lrnr咐11 【I ~~~~c~e;1：：品﹔~t;1stand safely any stresses to which it

BUILDING (CONSTRUCTION) REGULATION日， 1fl5G rn

(d) be adeql.mtely protected from the wenthcr; from pre間

hard巴ned 司TABLE IV.

Conoreto (oγdinαry) GrαdeG I ta V.

:Minlmun> ••.'""'" tu ""'h•o恨 in fu,.

I，.＜呵， Ju. o/ Jlnudn«I ＂~ lucl, cul>o"

F叫po<tlo肘。f mix. upper aml lowu ll=I"

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’一，,

1 日BUILDING (CONSTRUCTION) HEGULA'T'ION叫 lfHiG

(3) In calculating the stability of lhe building a8 a whole, the follO\γing additional horizontal forces shall be taken into

account一一、

(a) tl1e horizontal components of the windloacls on roofs as specified in Table VII consid巴red as acting lmlfway up the roof ;

(b) the forces due to winddrag, calculated as the plan :1rea in square feet of the roof multiplied 卅一

(i) a force equal to 0.05 P where th巴 wind is 且t right nngles to the slope of the roof,

(ii) n force equal to. o .02 九 P where the wind is parallel to the slope of the roof

TABLE VI. Basic wind pr帥Bl口已一－（P J

ExpoRure A. ; Elxpos11re B. ! Exposure C v ::o 日。 m.p.h. I V-::-: 105 m.p.h. i V 二 1日（） lll.)J.h

1 日 I 24 ; 21 1 2s I 23 i :32 ' 25 i 月 5 !

2'1 i H7 I

! 28 i 約 11 月（） l 41 '

I 4ii r

--- 1 45 I 1 一 I 47 \

l I 40 I （一 I G l !

I I 52 I '' For intermediate values of height, the pressures 何hall he calculated by

interpolation. j- The degrees of exposure are: －一

Expos\.1re A. This exposure covers open country not dire巳i﹔l _y exposed to the full effect of typhoons, not more thnil 200 ft above sea level‘ and not on the sea front. This exposure shall be used for exposed sites not mnre than 200 ft. above sea level and not on the sea .front. nnd for sheltered sites from 200 ta 800 ft. above seι leveL It is the minimum exposure for all building~／ more than 80 ft. high. I This exposure is appLicable to exposed sites open to ancl near tha sea, nnd lo sites more than 800 :fl. above sen level.

Wind pressure P, (lbs. per square foot) I

nfh0月U吵臼

rh刊口的自

IAι

鬥﹛仇U

句eophυηtnv

仆仆的司必

AAAA

，

yudhυ戶扒”“u

川hUHukυ”。

口口 to 10 20 :JO d{)

50 60 日。

1日。120 140 IGO 180 2日o

or more.

0 ·~ d一l

BUILDING (CONSTRUCTION) REGULATIONS } 1956

Materials for damp-proofing shall consist of

she悅 le且d or sheet copper; asphalt;

self finished bitum巴n impregnat巴d felt laid in bitutuen ; a core of sheet lead and bituminize<l hessi且n cloth betw巴巴n two layers or coats of bitumen surfaced with talc or other suitable material ; 且 core of sheet lead between two layers of bituminized felt; “lre coated with bitumen and stirfaced with talc or other Sllitable material ; or

HHY oth巴r suitable material or combination of materials; and shall be such as the Building Authority may approve ns being durable, impervious to moisture and in all other respects suitable for their purpose, having regard io tlw particular cirr.umstances of the case.

( /J) 的

(d)

(e)

) ,,FJ (

I\! 11teri11ls for dampproofing

H

Effective height of buildingψ

ft.

21. Structural timt>er shall b巴 of a qua]ity and strength sufficient for its purpose and shall be 、;vell seasoned, sound and frei:· from knots or shakes in such quantity as to affect adverse! v the strength （叫 durability of the timber.

1、rn1her.

PART III.

Loαds.

2'1. (t) Every buildi啥 shall be constructed so as to be capable safely of sustaining, resisting and transmitting, in nddition to the dead 亂nd imposed loads，日nd without exceedine- the npp叫汀iate limitations of permissible stresses, all fore巴s dt~e to

wind pressures in any horizontal direction of the intensities SJJecified in Tal>le V l for the height of the buildi叩 and exposure of its site.

Wind elf eels.

Exposure 耳，

Exp口sure C.

Such forces shall be calculated－一

for the vertic戶l surfaces of the building, at the basic pressure (P) in Table VI appropriate to a height measured from the general ground level up to halfway between the eaves and ridge levels of the roof, considered ns actin£T uniformly on the full height of the vertical walls ;

(IJ) for any projections above the roof, at the basic pressure (P) in T且ble VI appropriate to the height from the general ground level to the top of such projectio叫 considered as acting uniformly on the whole projected area of the projectton.

(2)

的

J、j

17 BUILDING (CONS'l'RUCTION) IU!JGULA'I'IONS, 1956

wh日re the heig-ht of such building does not exceed twice the width ’。f】the base upon which it dep巴nds for ii 只resistance to the overturning action Qf the wind pressmr>,

nor (b) to any part of a building which projects vertlcall），叫

horizontaily from the remainder of the bullding to nn extent less than twice the width of that projection.

(6) Every individual part of the outside B\日face of a building shall, be capable of resisting safely, without exceeding th巴 a ppr刊Ap巾t.e limit;tlon of permissible stresses，且 press盯e, acting in 、V品 I﹜ d:or outwards of一『

（α） in th 巴 ca設 of wall p~，nels, wall sbeeti峙， a11d wi11dows,

o.8 P ; (b) in the case of roofs, the appropriate pressL叮叮 or suctions

of Table VU incre且sed numerically by 0.3 P

Provided th且f within a distanceυf r /6d1 of lbe length 叫 th 廿building- from the gables in the case t} f both walls and roof, a11 { i of r /6th l}f the span frnm th 廿 eaves in the case of roofs, tiie pressur~s sl協all l﹞巴 tal叩en 且t I 另 P in t}1e 問月e of walls, a11d ~.o P in the case of roofs.

('7) In this regulation the symbol P shall be the rrnsic wind pressur.e speci仇巴<l in Table VI appropriate to the lieig l 叫且nd~xposure of the part of the building tltider consicJeratlo 口，

生3. All par且pets, ha~drails n叫 balustra的 shall f}R 叫ahll" j~~dir.ont仇lof resisting· saf巴ly a horizontal pre日月 ure, acting nt hanrindl or coping level of一

（α） in the c且se of stairways, landings and llfll 巳onies f1 川domestic buildings-25 lbs. per foot run,

(b) in the case of all other stairways, I且ncι conies, and all par且pets and handrails to l‘oaf日－’一另O lb丹

per foot run :

Provided that in . the case of balustrades an<l barriers in places of assembly } a pressune of r50 lbs. per foot run shall be taken.

也’，

全4. ( r) The test load for any structur巴 shall not exceed I :i: Test: lo 日﹛ltime:; the imposed load for which the structure has or should }iave been d起signed.

. .,

) l t rI1、、

,. J句

」

1 ，它吋

BUILDING (CONSTRUCTION) REGULA'l'IONS, 1956

(4) (a) Every roof shall be constructed so as to be capable 。i’ resisting ,safely without exceeding the appropriate · Jimitatjons of 少ermissible . stresses, the simultaneous effects of pressure and suction due to wind, considered as acting normal to the surface of the roof, as specified in 1、able VII, in terms of the basic pressure. (P）。f Table VI appropriate to the height and exposure of that roof.

可】

{ l

TABLE VII. W仰d vressuγe and s!lctioη on roofs. (Wiηd nor制αl to eave•)

windward slope I (or halt of flat roof) I

Leeward slope (or halif of flat roof)

Wind pressure Angle of windward

surface of roof with horizontal

- D.'15 P - 0.50 F

0.45 p

一－ 0.45 p ~ 0.46 p

一－ 0ι5 p

一 1 00 p 一～ 0.70 I>

。 .40 p

0.10 p + 0.10 p

0.30 p

O" 1 ﹛）。

20·

目。－40' 50°

一－ 0 46 p ~ 0.45 p

0.45 p f ~：~~ ~

0.50 p

60' 70· ao·

- 0.50 p

1n this table (i) the sign·/· indicates pressure and lhe sign-indicates suction ;

( il) the pressure and suction for roofs having in terniediate Inclinations ; slrnll be determined by interpolation ; ' (iii) the si耳H P means the basic pressu;re in Tahle VI appropriate to

the height and exposure of the roof under consideration.

·r o.5o P 臼0 。

(I]) The wind pressure on a curved roof due to wind blowing at rig·ht angl~s to the axis of the roof shall be cal<;ulatedon the assumption that the curved portion is divided into not less than four equal segments, and the pressi1re on each segment determined by the pressures and suctions specified in Table VII appropriate to the slope .of th甘chord of each segment.

(5) ＼司There the building is adequately stiffened by the w且!Isand floors the provisions of sub －司regulations (2）且nd (3) shall not apply

I

tJV

-

UAM

(

"' 會

,“

竺主吧＇！）2型~－ (CONS'I'ltUCTlON) REGULATIONS, 1956 .18 ) t‘

l

Con stn1ction ot Iou11rl a~ ’. t.aulio.

BUILD1NG (CONSTRUCTION) HEGULA’l'IONS, 1日 tin

空 7. Foundations shall be constrncted ：一

( l ） υf p~uin or reinfor間d con er et巴 i

(2) The test Joa~ shall not be applied to a rei ~llC.l曰ete 戶lructur巴 until 28 days nft.er the date of concretin£r. L'Url呵 the tests, sin山岳trong· enough to 叫ce the whole of ti7們1f'.om.bined dead load and test load shall be plncecl in position 1eaving a gap under the members. (2) at a depth below the surface of the ground sufficient tu

（ι） secure adequat巴 bearing cap-acity of the soll ;

(b) avoid i叫erfe的

adjacent streets, roads or !an巴吊﹔

(3) If, unde~ test，的 str叫ural defects can b巴 observ已d and if tl1e deflection 1 月 not excessive, the strncture sh且 ll be de巴medto be satisfactorv.

(c) avoid overloading the foundations of rHljacent buildings or the soil supp6rting· such foundation且﹔

(3）。f such thickness, not being less than 6 inches, nndυ！

such 1vidth ·as may be necessary to comply with the pr<<visions of regulations 5 and 6 :

Provided that where the foundation r巴sts on soulld hard rock th巴 thickness of conc1毛 te need be no more tlw:1 is neιessary to provide 且 suitable level 月11rfoce rn1 wliici: to construct the building ;

fl 2~﹒（ r) In every sto向 d every building except 的ere 山忌。or is one used for purposes of hahitntion, there sh叫 l Lw 叫ibited by tbe ow間， at each staircase or at some 州er Bppropriate place, permanently and cυnspicuousl Y, a notice. incised or 別的ossed, of metnl, plastic or other suit~ble mate;ial, in the foll側， j月「門口叫 in letters and 只gures 的t !es后 than .\ i叫1 hi£Th slating· the ii叩osed load for which the floor has be:n desig~~~！

Notice as to loud.

I 'J.~5 Buildings Ordin:inc~ ，

(4) symrnetric;dly under the centre nf ac!lon o「！ he (O<\d

I> I ovided that where tlie iou11dat1on lws 011 t!1" boundary of the site, it m吐y be wholly within 昂 t1cl1 月 il('

and shall be so designed, taking in to account th 日付C\'fl

tricity of loading, as to Gomply with regulati ﹛） fl 月

not to i is

.. lbs. per s [ 1uare font

l } { ) nu

NOTICE.

this [ lt1！（）日﹛i1111 posed The

28. ( r) The pressure on tb 巴 soil 11nder any founciati的 11 ~； ball Per not at any point ·exceed that specified in Table VIII inissiblr, pressure

Oil t;<1il Provided that where adequate tests are made to determi 11e the

bearing capacity of the soil on ·any site, th巴 c且lculated [>fCSSllf(' on such soil may e..<ceed .those specified in Table VII I,}rnt sh日 11

in no case exceed the prov·ed safe bearing capacity.

(2) Whe『e floors of different rooms or di釘eren t parts of IToor,<; liave been designed for different imposed loads, a notice in the above form shall be suitably displayed in eacl . ir n e!lcl1 part of th巴。 oor ns th巴叫e rr吋 he, indicating the V叫tion ~，： ci

(2) \Vhere the foundation rests on cohesive soils, ('l、yp巳 2 of Table VIII) the maximum pressure specifoed in the Tal)fe shall apply only to individual footings, Wfllls or piers. Tb巴 averngepressure un<ler a building calculated as the total load over that area of any one hay or 、other major portion of the structure, divided by that﹔ '1f吧段3 shall not exceed the appropriate pressure in the Table multiplied by the ratlo of the width of the lea月1individual footing to the width of the whole building.

PART IV.

Foundation$.

、宜6. The foundations of every building shall be constructed

~~a~s .~：： JH~ r~~~：~：tι﹔﹔＇＇：~＂：；：； £l~0 ，可t口Sl~~~~li~in~~J ！；~： stability of that or of any other building- or road and without q:ceeding the appropriate limitations of permissible stresses.

fr、 011nclatit﹜ II 日．

2J BUILDING (CONSTRUCTION) REGULATIONS, 1956

’l'ABLE VIII.

·Mαroimu11i 1JrBBSUre o祖 80﹛t 1md er f o m:dαtio1珊，

l\1axill1um permiaHible pTeesure In tons per

R<tuare foot Type of 80il under foundation

AυKUOMU

A鳴OTM

4．庸俗”4

9d14

nυnvu’A

Rock （ ι.） Hard 目ound rock』 massive( b) Medium hard rock ( o) Soft rock

。υ

H /;

Vnlne dependin 且， Oilmaterial depth and

!life of fill. to he 1letenninerl hy bearing- te臼 ls

1

Cohesive Soils (For indiyldual footings' only)

（叫 Stiff clay

I ，以 lium lay ( c) Soft clay

li1Lerm巳diate Soils Red Earth, Decomposed Rock 』Later1te

I (i) Compact ;(ii) Loose (d芷y)j (iii) Loose (wet)

iNυR Cohesive Soil8 I rα ） Gravel & Sand-gravel ! mixture, compact I ( b) Gm.ye[ & sand”gruvel i mixture, loose i, （口）。oarse snnd compnr.t : ( d) Coarse sand, loose & fine / sand, compact

(a) Fine sand, loose

Made gl'onnd & fill

2

3

BUILDING (CONSTRUCTION) REGU'LA'I'IONS, 1956 20

IHA GRAMS一－The d但仍·am aocompanyin11 thB te品t 切 purelyeruplaηatory and form no part of the enaated i·e.g紅lntions.

BUILDING OF 些l~J~[lATl?N PLAN

“a l -- o qd e i l E a pb E - AU d - - l t ι

Buv

t t e >I

自

I凡 lhe fcllo•1i吋＇ th~ lJ叫oh ifmll h~ve lhe jol\owit可 η1e11.ni n9s,

dirno:n~io肘。f ~ny b."--.Y or major ﹜口叫 ot1 of 1he bulld.1110. !ea.5t d ~mcnslon of nλrrn\i.t,,.c.ι ~1 ／ ~ivicluD.~ f~~tl~：；t·- -·- -- ·

IITTf，η ！Hons Of any ~nd[v~duaJ foot1n9. lee..st ove「fl.ii dim "on 沖whole bu~ld lng .. :J

H「叫 !i~ it屯 fot"'l loe..d Ind ivi d uo.l f＝十in3.

ωι ,l '

(lιb ' “

1叫1

~n the 且hove t且 !:lie, the terms used shall be deemed to h且ve the following meanin且s ：一－

Rο cit-. the undisturbed rock mass whose minerals show no sign of decomposition.

a fine－~rained inm:gunic soil possessing sufficient cohesion when dry to ;form hard lumps which cannot readily be pulveri胃ed by the fing·ers. （α ） Stitf clay, clay which can be removed. by spading a fr閥h

sample of which can be moulded by a substantial presBnre of the finger昂．

( b) Soft clay, clay which when freshly sampled、 can be moulded m1der relcttively slight pressure of 1;h's fingel's.

Red E叫·th. the residual aoil formed by decomposition of the l'ock 111asa, in situ.

i ’

日

C[a.y,

且t DJ口y

h「miss~ble tot ... ~ to&<! o門，any bιy or lnjor portion of the bu~ L仙ig.

卡胃 f • wl:

P = j ' ub m 哥拉\uhe.re J, is ihe G艸 ropt﹒叫＋ e pel'm~is~ble .sof~ －

J•rassure s~ven in T~He filII

th.,,n

and

卜WCF吋

22 .~.山JI__N~＿！＿~ONSTRUCTION) REJGULA'l'IONS, l削BUILDING (CONSTRUCTION) RrnGULATIONS, 1\l5fi 23

Gravel ~ia1r~：t~~~e a1~a ~f theor:£ ~~~＇.ns one quarter inch or more in 3日，（ 1) All piling used in connexion with the foundations of Pili刊

any bui !ding shall to the satisfaction of the Building Authorit ;’, be of adequat;e load bearing capacity; and each pile 5liall

(a) be stiong· eno呀！1 to C且rry its load ;

(1.i) transfer its load lo the soil in a satisfactory niaJJner ;

（口） not cause stress巴s in the soil, taken in combination wilh all the piles in the foundation, greater than th巴 prov巴ιlsafo bearing capacity of the soil ns determined by tests.

(2) (a) The per叫lted piJ,e !oadi吋 shall be su晶 tbat the vertical pressures in th~ soil at or below tb 巳 points of the piles, produced by the loads on all piles in a- foundation, shall not exceed the proved safe hearing capacity of such soi! as determined by tests.

(L>) Piles or pile grnup:; shall bl' n:;sun1ed lo transfer the11 loads to lh甘 soil by spreadi11g tli巳 load uniformly at an angle ,11' Gυιlegrr:es with till: horizonlal, starting al tlic top of the satisfactory bearing stratum in wliich Lliey 且re embedded, and th巴 area considered as SUJ }i}OJ l j 11 位thP. load :;hall not extend beyond the int的I日eτtion of the 的o degree planes of adjacent piles o 「 pile group月﹒

(J) The permissible pile lo叫ing- shall !Hit 1}c such as Ir白「u use excessive moγcme11t of the pi ＼巴 rclativl' to tlir~ soil \Vhe11; any doubt exists, proof of this load sh且 IJ be obtained fr {)] n load tests, up to 且t least twice the proposed working load.

(4) Every pile sfrall be driven in such a mann日I ns not lu damage th6 mal•eriaJ of the pile.

(S) All piles shall be capped with plain 川 rei1汁。r﹛：edconcrete.

Scmd ﹔ia';;f;t﹔γb~~ l~~﹔芯l ~~a!n~obe立e﹔~a~c是： quarter inch in

（包） £~a;s~2 s~﹔﹔~＇h ~~~~en~ons圳叫 chiefly of g叫lS 問tuined( b) r;n:ne~i札記~d 口。11叫河山efiy of gT州州叫 a

a soil which requires the 11se of a piclr for removal.

a soil which is rev.di!y removable by shov且lling only,

Oompαol.

l,oosι

4 ( ] f ＼？﹔J﹔﹔﹔﹔）九（刊） ~~all if. the found且tion is less than 3 feet in least late叫

C[IJI

plied by the least lateral dimension in fe巴 t, and

(/,) [i~﹔：：﹔：＂＇.~﹔：＇d：~﹔ s1 }ecified t}ierein 0 ie pressur1~

(1) 2> (> ii （巴sts wh.ere 叫u ·ed ﹔：H﹛們 with the i昕1u1ren閃1:l'.ng·inf'們I ing Code of Practice No. 1 _1υ50 ~Sitp TnvPstigatrnn

;J>2;sii >l 望9. The l ﹜ res曰ur佇（》n plain or 叫白i呵d caner圳 in found ;L !;rθ3見\I ！~；叫 tior slw!J ll川仍〈，υ11crete

'l'ABLE IX

l》res.~ure οn ooncrete oγ rein faγoed cυ鈍。1·ete Jou詞dations.

Des

I per sq. ft.

l 一一一一一一一一－一Grade IA

TIA IIIA

604 nuUOMUHO (6)~Vood pil曰s shall be cut to sou叫 wood i>efore ti】巴 C叩pinis pla亡eel ’ and the cut-off level shall be hclow the probable w~r manent ground wate'r level.

(7) The 'authorized architect sl叫 l I肥皂p or cause to ＼）（~ l叫） t accural巴 r巴cords of materials and principal dimensions of ea1、， Jipile, of .the weight and fall of the hammer together with the; aver且ge pen1etration of each pile for at least tbe Jn 日t 「I \Iηblows

and the levels ·at the bottom and the cut-off of the pile. I I {f shall submit a copy 。f these records to the Building Autho1 lty.

Gmde I II

III IV v

nudu3nHunuphu ku

,GoonL4A

,fJ 寺、

25 BUILDING (CONSrrRUCTION) REGULATIONS, 1956

t j f storagf!

(4) \Vhere in any part of a building the floor next above tl1c‘ ground is constructed of plain or reinforced conc1 巴te, cvnst1·uct 巴d

so as 1o leave between it and the ground an air spac巴﹔ venlilated iu accordance with sul}- regulation (5) and encloseu so as to preve11 t it 月

use for any other purpose, such floor may be deemed tυbe ihl' layer of concrete required by s昀 .regtilation ( r).


(b) 31 ‘ 1而There t}ie ground adj 巨le：巴nt to any t】 uildinP' 巴x巴rts t﹜ 1‘es司：：：﹔，~di1﹔立＼J~﹔of Sl {aining‘ safely an司 t~ansmittlng ti叫 press叮e or load ;.vi thout exceeding the appropriate limitations of permi.~Bible stresses.

1勻，ess11refrom acljacent ground.

32. ~her巴 footin穹s ar巴 1 ui叫 to 叩內ead Jo且<ls f川0111 wal L 且to fou1 a岫

﹔1吉﹔Dl:i~告i忠f叮1且＇~~~：已訂品：誌W一e『E possible b巴 lai 【l as headers.

li"ootinga.

PART V.

Sites and fl.oars.

33, ( l) '1、he ground surface within the external walls {} f ev.er~ liuild!ng· sha~l b巴 covereu with a layer of concrete, noL

i1 }lenor to that designated Grade V :r

﹔intii'：：： ~tt~fs~~~~；~~－ on t出 upper 叫ace. ﹝﹔：：：元。i1~1cr~r；~~~＼＇°：~i；﹔ I~」

Covering的f siLe日，

(5) （ι） A11 enclosed space under a floor shall Le ventilated f} ll 的 least two sides with air-bricks or otherwise, having· an open area of not less tl即i the eq叫valentυf 2 squa閃 inches

per linear foot rnn of external wall. No single op巴n ln g in any such air brick or ventilator shall exceed ~ inch i11 its least dimension.

（叫 not less than 6 inches of Grade V cone「ete where th 巳con cret巴 is laid on ground ;

(b) \Vhere th巴 flow of air may be obstructed in pl 且（、日s by solid constrnctio11, ducts of a total area equal to not less than twice the total area of th巴 opening in the a ii- bricks or·other ventilator in the external walls shall be form們1 ill such solid construction.

34. (r) The groumi surfac巴 of every area, back yard or alley- Area筒， el".way of e附y building (unless exemp圳的且 garden) s!i州悅耳拉icovered with一

I ) ( 1 a layer of concrete not less than 4 inches lhkk and inferior to Grade V ;

stone or brick paving bedde<l aud jointed in C:t ＇﹝ 11 （~\ll mortar ;

．．，呵，

of one storey-

fi) open on two or more sides; or

(ii) inte叫“ to be used solely ‘ for the builder’s materi且ls or pl且nt ﹔ or

(iii) intended to be used solely as a g閃e心ouse, or tool shed and does not communicate by any door1 winllow or other opening with 且ny building to which sub-regulation (r) applies.

(3) vVhere in any pa1t of a building the layer of concrete 叫uired by s的－regulation (1} is also a floor of the buildi呵j that layer shall be constructed of concrete not inferior to Grad巴 I Ir, no1 less than 4 inches thick, and laid on a consolidated bed not less than 3 inches thick constructed of clinker, broke11 bricks, 。l 付1 I w1 similar- materials.

、‘自’，

- t r’‘、、

) ,hu (

[){}l less lhan 4 inches where it is--

(i) not inferior to Grade V concrete and is laid or: n consolidated bed consisting of clinker, broken bricks or other similar materials not less than 3 inches tbiclr ;. or

(ii) not inferior to Grade III concret巴﹔肘，(iii) reinforced to comply with regulation 5.

) ，hυ

(

。 l ＼［＼＼~；iii：布了：訂戶） shall

) I ( ’，’，1ι、

which

10 be used solely一

( i）且S a foundry or blacksmith's shop;

(ii) for the milling or storage of timber;

(iii) for the storag海 of aci也 and ch巴叫ca)si<;slrny concrete;

、c]'J各

l r od

- BUILDING (CONSTRUCTION) IW,GULATIONS,]%G

layer shall not be inferior to a layer of hot bituminou~ adhesive of 市ufficier1t thickness to prevent the wood f 「orn corning into contncl

with the concrete. . 39. Every skirting shall be solidly bedded agaiDsl [ lte wall lo Skirtini;.

wb ich l t ls attached ‘

VL PART

。011st1 ‘ llCtion an<l bontlin1;- ut w仇JlB

Buildrn缸呵。ver 'I Rtorey電

。 I' 4H i ＂~＇ ill hei1\hl

The walls of all buildings shall b。 c口n 月lruct巴cl υl一，bricks or lrniltling blocks bond巴d and solidly put log甘 l liel

with mortar i (!i) co叫ret巴 not infer r lo Gr正ll v; fι ﹜ reinfor﹛了巴d concrete ; οr (:;) a盯 U﹛ the fυ呵叫g ruaL巴 rialo﹔ i1：圳nhi州＼、干／ f「a~1巴丸V盯k of st巴巴l or 的nforced 州

41. Buildings wh[ch exceed 4 srorevs ur 4日 f巴巴l in height shall

be cr1n月廿uct廿一

Walls and Pi 缸”，

40.

jil

-

i

ll

－－

i

！︱

il

-

llili

--;

BUILDING (CONSTRUCTION) HEGULATIONS, 1956

a layer of bituminous macad且rn 3 inches thick finished smooth with a topping of fine bituminous mar.arlam r inc!1 thick; or

a layer of such other impervious material as the Buil<liug· Authority may approve.

) fL

(

ρUV

吋心

) i t (

(2) Such surface covering shalt be laid to j且 ll at a grndienl of not Jess than I in 80 to a gulley trap or drainage channels conm~cted t·o a slorrn water drain 也

35. The floo1 of every room to which a wat巳r supply is l〕lυvided shall be constructed of concrete o 「 such other impermeable material as the Building Authority may approve.

Cci'tau>

floors lo be Im~ pei·meable.

with

、、ljj

- t ftt、

3!l. '1 、 be !eve! of the floor nex.t above the gTound of 巳very

building shall b巴 not less than 6 inches aLove the lev巴I of tlw surface of the external ground, pavin后， or oversite concrete at the e11tra nee to that floor.

Lowest floor lo be above ground level

V·i i th H frame work of ster.I or r的 nforced ﹛： oucrct肘， awith load bearing walls of reinfnr< eel concrete or co11c1 e1 t·

cnst lu-situ i wilb a combination of （α） and (b); or 。ther method of construction approved lJy the Buildtllg Authority and designed in accordanc:e wit!1 tile cu { I Clll

rel rva叫 Britisli Standard Code of P叫icι

（ι）

( l;)

37. (r) Wli 日re iu a叮 part of a lrni!Ji噹 the floor 11 巴xt above the ground is construr:ted of wood, it shat! be so constructed as to leaYe ao a11~space not less tlian 9 inches derp hetw吧en the level of the underside of t11e joists and the level of the upper surface of the layer of concrete requi閃d by sub-regulation (1) of reg·ulatioi ]

33, and that space shall be 另o ventilated as to comply with tlie requi1ernerits of sub叮regulation (5) of regulation 33.

V coli la ti 川 T tJelυw \\' .. wd floors

(c)

（而）( 2) '1、he provisions of su !• regulation (1) shall not apply where a cυntinuotts damp-proof rnernbrane complying- with the requin~－

ments of reg11lalion 20 is provided between the concrete and the fl obr.

prov~~i,on；：：﹔l~~g~＼l﹔：（α） regul且tic﹞ns 43 to 56 ;(;}I

(b) r巴J!Ulations 57 to 60 ;()\'

~c; tb：帥叫 British Standard Code of I> ractice i11 forct J at the <: oming into op巴ration of these regulations :

· a building where tb 巴 imposed ·floor load

叫：r~~~~~~b~：1~e／ ~quare f叫師叫r叫叫川F 行i川a:;be designe<l and co叫川t巴d in acco的nc巴 with Ll1e p川日川日〔such B~itisli StEin如d Code of Practice.

it

--

lili

--

國

叭叭 • 38. (1) Ev巴r﹜r woo<i floor s}iall }>E constructed of tongued an ( :! t﹔﹛＇，＇﹛﹔ tit~c'.1【B

(ii) I干h 巴 r巴（﹜（！】O且rds or strips’ nailed {} r oth巴rwise securely fixed lo floor joists ; or

(b) where of blocks, fixed to a screeded concrete sub-floor wi1J1 asphaltic bitumen or coal tar or other ndhesh 日 HS the f3uilding Authority may approve.

(2) Every wood bloclc 任oor bedded on concrete in conlact with tlw g-rouncl shall be provided with a continuous damp-proof layer lυprotect t.!tc limber ag·ainst rising· damp, and such damp-proof

JJ

28

’ 4 .,

' ..’,. '£:1’, 「. :;·

,’ ,

",’ .，ι，~·； • ·:<a」~＂＇午3：ι－~－ ~－－－＇

BUILDING (CONSTRUCTION) REGULATIONS, 1956 BUILDING (CON$TRUCT10N) REGULATIONS, 1956 20

Ruleti for m1.1as1ning height o.f storeya anrl heiidii of wa11s

Hules for measuring lenu:lh of wa』 l 話，

苦的＼

伽 j﹔：1tr~＼ 1o~11le：：＇~﹔：：2℃且，i訝：i是：：~；：， s~：~~；s~：﹔：：：﹔s：~o~ ：. chimneys.

exte1~：﹔i：﹔﹔E：﹔巳r 品：﹔﹔i立~l i~l in a building otb巴r than a public buildi呀。r a building of the z:f ~iiil~~~~

other than warehouse class shall he nu~~li巴

徊） of 叫 less thic ( b) built in C巴ment ID (}rtar [ ir cement \im巳 !TI ﹛Jr tar 仁ont且＼ 11111 巨【】f th e

I 叫 m閃 th訊n 6 volumes 叫 sand to 1 volume

43. (r) J干or the purposes of regulations 45 and 461 the height of the lowest or only storey shall be measured from the base of tlie wall, and the height of any other storey shall be measured frum· the level of the underside of the floor structure of the storey t·o the level of th日 undet叫de of the floor structur吧 next above it 叭， j if there is no such storey, then to the highest part of the wall or, in a storey comprising a g且ble, to half the height of the gable.

(:.i)’[lie height of a party wall comprising a gable shall be measured from its base to the base of the gable i the height of nny other wall comprising a gable shall be measured from its bas＇~ lu half tbe li 巴 igbt of the gable ; and the h巴ight of any wall not comprising 且 gable shall he rneasure<l from its base to its highest part exc\11ding any parapet which does not f買ceed 4 feet in heigl1t.

TABLID X.

1'hi

立e恥 i i 'rhiclmess of 一一一一一一一一一一一－ I 一一一～一一一戶一～←一一一一 i Wl‘ l l

I Not i I Not I E芷η州呵 i Excee

Feet. \ Feet. \ Feet. \ Feet 12 \ -- \ -- I B~ ＂ lhro叫州L

t - ! 3日30 \

I l)l)

41L (r) For th 日 purposes of regu ＼且tions 45 and 461 walls shtd I be <leernerl to be ciivided into distinct lengths by piers }

h11 ttresses } chimneys or dividing walls. Such piers, buttresses, chi111neys or divi<Hng walls shall be bonded into lhe walls, and 一

(1t) i11 lhe c且se of a pier or but

(i) extend 戶pwards from the base of the wall t<} I Ii 佇top of th巴 wall;

(ii) be, at un y height, 仙t less in thiclm巴ss (measured so as to include the wall) than three times the thickness of the wall ﹔且 nc\

(iii) be I川 less in l〕月adLh than twice the thickness of the wail ;

(/1) in the case of a chimney shall have a horizontal sectfonal area, excluding any fireplace opening or flue, of not less than the area required for a pier or buttress and an

" 心：ρ1，門的~~ nf nnr h·ss 1·han three tit11es the thrck”

12. 2A

1 s~ ＇，山I《 ·hou

\ 1吊叫川e lower most storey; 8~ ＂ lhrough out the rest of the wall.

13 ’, throughout the lowern1os七 storey ; Bi" Uno甘ghout the rest of lhe wall.

3G _, 1B’, throughout the lower mo司t two storeys ; B!’ throughout the reRt nf th~ Witll.

1 'Iγthroughout the lowermost storey ; 13 '1. ~·;: . ' Jh街叫吋t two

2ιl

30

j { l ‘‘

f'h ？叫rne8s。 f external a i1d party waii~ of nublic bnil 刊 ings υno

IJUiltlings of lhe ware-house dn~s

可→、 ιι..

BlHLDlNG (CONSTRUCTION) RE]GULATIONS, 1956

4日，（ 1) Except as pτovicled in reg·ulation 61 every external and every party wali built of bricks or building blocks in a public iJ11iiciing or a building of the warehouse class wh巴re the imposed Rom load does not exceed 150 lbs. per square foot shall一

（吋 be built in cement rnorlar or cem巴nt lime mortar containing not more than 6 volumes of sand to r volume of cen>ent;

(Ii) have n thickness at the top and for I 6 feet below the Lop (}i not less than 13 inches :

Provided that it may be not less than 8~ inches for-

(i) n wall having only one storey height not exceeding 1 z feet;

(ii) the to1irnost storey height of a wall where that W司 !I does not exceed 24 feet in height.

(z) Every such wall being of the height and ！巴ngth specified 111 T;ilile XI shall have a t\iiclrness al the base not less 1han that 叫＼（＇（ 'i fi川 1 i11 tlintτable.

(3) '1 ‘! 11• tliidrness of the intermediate parts of such wal1 bet ~ween t lie ba統 and I6 feet below the top shall be of not less ! Ii 1clz IlC'S'.;{ ha11 lliat obtaineJ if the wall were to be bttill sυl id lliro11ghuu1 !he space bet 叭，een straight lines dr且wn on each side of ti 甘、 wall a11d jnining tlie thickness at the base to the tliiC'kness at 1 (1 foo;t i>elow the top.

I ＇~） N ﹛﹜twit ！叫anding sub-reg叭叭ion (r) （的 of this reg叫“ion,(li!Sf'ts shall not be made in a wall between the base and the top ih圳的1人「xrept at the level of lateral supports.

TABLE XL

Thiele悅。” οI ~由teγnal a.nd pαrty wαlls of public buildings a悅dbuildings of the waγehouse class.

叫l of w1ill I 'l h\ckness at base Uelghl ol wall

Nol exeeeding 24 feet Any length 13 ineh2s

Illxcee.ding 24 feet and not IN ot exceeding 35 feet exceeding 36 feet I '.Elxce叫ing 35 feet

JGx"eeding 3fi feet \Not e:irneeding 36 :l'eeL \ Not exceerling· 48 feel I Illxeeeding 86 feet I

13 inches 17'! Inches

17$ in巳hes216 inches

d

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48. ＼：｛丘）口 ~t,;( '. \l:s~﹔：：：：：：d ：：﹔：：：﹔！：﹔﹔叫λ：11\i~＇﹔、N且！ ls to 丸V﹜1icli the pro~ision叮 of such r巳gulatioris ai> i} 1y

(/;) No such recess sh<1ll reduce the width of any wall to less

th且11 羽生 inches.

（ ι﹔） Tl 一咿1巴 width of 且一 l 1 r叫＼s~s /i\1;f nl 且ny one l巴ve\ shall n﹛lt 佇τf、（0（沛（穹〕

仇t th<lt level (dJ Whe1 巴 tlie wall …u :Ju川叫 vvall』們局r) ::c主f

opening at 且nv level sh且ll be at a dist﹔UlC巴 i 『 Ol ll t I l tc

huttressecl wali o[ not less tlw.n 1i the height of the

buttressing wnll.

f?\ f\n arrli or Jilltel s11mci巳nl to su i ﹜ p。 rt th堅持u ret structllr<'

shall、 i〕e bl仙 of i ncornbu月tihle n叫~rial ovet· rvery 1 f'.c開。l

opening in nny wall.

(3) （且） Openings may he formed in party walls 叫her than those separating I arts of the building in difTe1 時 nt ow11e1

shir】。（川只…1 op巴n in gs shall be {1lted with 糾－clo計吟仙rs in

frames, the who！巴 so constructed a月 to be fire ms i 月tingfor at least half nn hour.

(c) ln any row of house or terrace exce.erling 120 feet i11 lene-th or consi叫ing of more than six ho凹的 or tenε？削的p叫y wa山Is witl10ut op叫咿 shnll be p…i，~，rd at a dlstanc巴 apart not exceeding· 120 feet, or six t10t1 日es 01·

tenements, whichever is the 1ρSS.

(d) ＼.月There openings in party walls are closed, bricks or 1 solid building blocks not less than 81_- inches in lhicknr.ss

or reinforced concrete not le.ss than 4 inches in thickness

shall be used.

ll2 BUILDING (CONS'l'RUCTION) REGULATIONS, 1956

(4) l「（﹜ r the J)U

~~ll~l ＇口；~1rle an ] 1 chase 川her 吋位ion i甘心喇叭hickness

Loads on walls. 40. (I) A wall slrn!l not be subject Lo loads other than

ιlistributecl loads:

Provided that any wall 111且y b已 subject to n!> V C【） ]1 ﹝三entratecI Joa<i which is t叫

﹔﹔c~＇. ~1~d~：t﹔已：I心﹔2亡＇s﹔﹔﹔i%~ ~~~~~~﹔﹔7仇L﹔﹔：i!:1 ~i~ requirement's of regulation 5.

(2) For the ~urposes. of this reg叫ation, joists set at dist且nces﹔叫】：ll：~：l ~~~~~di呵 42 I叫

norbe!ling 且Jl 叫 over

birnglng· VIC!K

50. (1) Subject to the provisions of regulation 4s ，耳、Jany pa1一t of 且ny wall ov巴lhangs nn_y I】且rt beneath it’ it shall－一

（曰） be i11 ad <lition tc﹜ th 巴 requir白【i thickness of tlJat 1申all; an {1

川：－~~﹔i﹔~l~﹔：：：！ ο1 』 t '" uti

(1) 'j 、 he prnj吧（、 ti on 口f anγcorlJelling shall n叫 ~xceed ;} of !lie thickness of tbe wall immedi口tely below that corbelling,

﹔＇.Jd心f~ss 1 5 I . ( 1 J ＼矽here f付he level οf th巴 ground or of th巴 SU ﹞fa﹛：e o 品~~~~nee ::le 月ite caner咐 is di {fereut on one 的 of a wall to that on th

！﹔』、i﹔0\ltl 《I l J '. ~﹔﹔1,; (2.'. If .5UC、 h 《 liffe叭ce in l叭F巴l 削：E巴臼 6 f巴叫 the wall 伽ll

be dest.gned and built ~s a 叫且ini1 wall 缸i in 且Ceo re 吋gulal1on 44 of Building (Pl且fl ！﹜ ir ) Regulatio肘司

『J'h ickness 。f external walls of cel'taln small buildings.

肘，（ r) Subject to the provisions of sub-regulation (2）一

（司） :1：：：仿5﹔﹔：2﹔：：：：：：﹔~d ~~~1et~﹔h﹔﹔巴：ti：~n：﹔:i口：e~o：：﹔1：﹔：﹔：﹔~er~ 3f~e~ei九﹔~nd the h巴

(Ii) ~ garage’ gree (attac}1ed to 且

d for hf且t】 itatJon and not exceeding I <J feet in heiglit

’ may have external walls not less than 4 i 『1ches thick. lvL

J

BUILDING (CONSTRUCTION) REGULA’TIONS, l95G 刊叫

,>

(2) （日）＇九There any such wall exceeds 8 f~et either in height or_ length it shall be bonded into piers, one of which shall be placed at each end of the·\vali, not less th＜凹的inches square in horizontal section,- or of such greater siz巴 as may be required to give adequate stability.

(/J) vVhere any such wall exceeds IO feet in length additional such piers shall be· placed in lhe wall so as Lo divide the same into lengths not e芷ceeding IO feet.

(c) All bedding and jointing in such walls aud piers slwll be in cement mortar}

(d) Such walls shall bear no loaJ otber than the distrilrnted lo且d of the roof, which shall be so constntr:ted lliat the walls 且re not si1bject to any I~巾ral th rust the叫rom.

53. (r) A load-bearing ext巴mal or party wall not exceeding· Cavity 24 feet in height and 30 feet in leugth in a building otliPr 1!1 且 11 wa] ls. a public building 仆r a building nf the w且I巴housP cla月s, nnd, subject to tile provisions of regulation tir a panei wall i11 ;11Jy building, maγbe constrncted as a c且 vitv wall.

(2) No star巴y [11ιbuilding uf caviLy wall cui } Sl! lll I illtl :;iJ,dl exceed a height of 12 feet.

(J) Cavity walls shall be construc1ed of solid bl'ic 、： ks or build-· ing blocks properly bedded and jointed in cement lllortar, and shall comprise two leaves, each n心 t less than 4 inches thick and an intervening cavity not less than 2 inches ancl not more than 3 inches wide.

(4) The twοleaves shall be united

（日） by iron t!es so shaped as not to transmit moistur巳 ar:rossthe cavity and not Jess than \i, inch x 告 inch in cross呵

section, well galvanized or otherwise protected from corrosion ; or

(b) by ties of .such other materials and cross-section as to comply with the τ巴levunt curr巴nt British Standard Specification.

(S) Such ties shall be built i叫o the horizo川al beri joinls during erection and plac巴d at distances apart not 巴xceeding 3 feet horizontally and 18 inches vertical! y.

戶、

- •' 瓜，

!’

34

<;lass blork walls

!'n»apet walls

Rounrlary 研 allsnll<l fences.

J3UILυING (UONSTROCTION) REJGULA'l'IONS } 1956

(6) Such ties shall also be placed at distances apart not exceeding r2 inches (measu1'ed verticallγ） within 6 inches of the sides of al{ openings.

(?) The cavity shall during constrnction be kept free from mortar dl'oppings.

(8) In lbe case of load .bearing walls the cavity shall extend downwards at least 6 inch.es below the level of tbe lower dampproof course of the wall, and in all walls, wherever the cavity is bridged a damp『proof course or flashing shall be provided to direct moisture away from th日 inner leaf of the wall.

(9) Adequate d叫nage shall be provided to all cavities througJ1 the outer leaf of lht: Wi-111. The maximum wiL!Lh of any opening for drainage purposes shall not exceed t inch ‘

54. \Vliere glass block paocls are t} uilt into walls other than party walls-

（汀） tlie op巴ning into whic、h the glass hlncks ar哩！iuilt sh;-;:\ be 苗。 constructed that 110 loa<l from tl1e huilding is tr an月f肝red to the glass l;lr叫的 i

01) 111 戶 nwxi mum a1 巴a u﹛ a 且 ingle panel sliall be roo square fr:吧 t and !lie maxi111um V巴l tical dimension shall be 1 月

feet in external walls （）！宜。 feet in internal walls.

!iii. Every parapet to au exterr1alυl party w且 ll sha'd

(a) where bullt of bricks or building· blocks have

(i) a tlticlcness of not less than 8~ inches ; and

(ii) a height nol rnore than 6 times its tbiclrness ;

（的 wher吧 built of reinforced concrete have a thickness of not less than 4. inches.

56恤（ 1) The boundary round the site of any building adjacent fo a street or scavenging lane shall be provided with a boundary wall or fence not less than 6 feet in height unless exempted by the Building /\ uthority.

(:i ﹜ E ，.吧ry bou吋ary wall of brides or buildi凡g hlocks shall－~－

（α） be built in c~me川 mortar o「 cement lime mo巾1 ﹔

BUILDING (CONS'l'R\JCTION) REGULATION凡！…

(b) ~ne h：~~~~~：b~~l:nS （~i﹔？﹔o~~~~＇斗：﹔＼：~~~e川日 f制叫e1's not .less th an fl~

(c) b巴 provided with buttresses .o~ P一

：：﹔~1:sp：；﹔·：：.：：~ ~~·~，~~：：［﹔~＇；~~ns~﹔1~ ~＇. ~t~~o~：d~l~an l~ (i) at all angles of such wall i and

: i~ at 叫t ,end th巴州州ess such wall is t叫巴d in to an~~i1er wall 叫 i巴SS in 廿lickness than 伽 butt心es <

piers required ;

(d) be not Jess than 8吉 inches thick if exceeding H feet in

!1eight.

肌（a）叫e 恥的rnP-S~司 r且tio of 叫 wall 川 pier 叫川~）t~﹔l,'.;,i，！月~t~irey-lteight shall i咒－ )l的fl Iil\t(J

(i) in llie cas巴 of a wall, tbe r且tio of the effective i叫﹔i~ to the thickness oi the wall, 開了i叫ve 叫 plasteror rendering,

(ii) in the case of a r,ier, t'.1e ratio of the eJfectiv巴height to the least laternl ciimens1011.

(b) The ·eff巴的ve height of a storey-height of a wall υI p1e1

shall be as shown in column '-' below

Support to ll'α LI oτ PieT Eff ecti1•e Height.

(i) W·a 11 with !a tern! supr>ort * of the storey height·

at the top of that storey

height.

(ii) Wall without lateral 趴ip- r1 times the storey hP.ight.

port at the top of that

storey height.

(iii) Pier with lateral support at The storey height.

·the top of that storey

height.

(iv) Pier without lateral SllJ}- Twice the storey lieig\it . port at the top of that

storey h巴ight.

Ahu l a-z

Ma1dmum compressivo 長 t rf~ses in 、1;alls or piers of bricks or building blocks.


liR. (I) \Vhere, in the case of walls or piers built of bricks

z付出訝：＇~~：·：］丸之比﹔~：；~~ii'7n＂﹔：~~ s~~0:ey品位﹔~i11not exceed those specified in Table VIII for the designated brid刊~1,r huilding- blocks opposite the specified mixture of mortar.

＇·：﹔t三ce~，﹔） I ，~：e己﹔：：﹔﹔：：：e，﹔｝；~：~﹔＇；~~；：；~古F﹔ ~~r字：♂：巴豆~；t J，﹔rs~~~l﹔1！﹔：r~~~：~~

Provide {i that the slenderness ratio shall not exceed i8.

(3) The compressive stress shall be deemed to be the sum of th~ ~ead a叫 i叫）。如i load dist巾uted uniformly over the area sustaintng such load.

TABLE XII.

Mt1，~i川·~m com)Jressive strees in toπs per squαra foot m 叩αl/9 a加lin酌，s nf bγ﹛oles or. building blocks wheii the slende叫ess

mtio dοe,9 not exceed οηe.

一一一－『一－

Mi f t Designat!o!1 of bri巳ks or building blocks, x o mor ar. and minimum crushing strength ( S)

』一一－一一－一一－－－一一一一一一一一－一一－一一一（一一－一－－一一

S d Solid I 。 Hollow . ., quare 已﹔oncrete I ommon Blocks f:J Granite Blocl臼】 Bricks S ：：：：：：’7日。自 ω 甘 S = 7,5oo s -- 2 500 I S = 1,500 lb / 的.§ § lbs./ sq. in. ’ b ./ sq '" I lbs./ sq. in. \ u , l UJ 1 s. . • 1 sq. n.

一一一－一一一一

0 ~ 恥 3 B2 13 10 5

0 ~ <!< 4 24 12 g 5

1 I 1 仔 22 包 12 4 自1 、 l 2 g 20 10 fl 4

t ~： In accordan凹 with Regulation 15 up :a l part of lime may be 且的dfnent:i~orta孔 The stre時th of the br叫（ or building- blocks shall be

如ter叫ned in accordance with the provisionB of Sched口le IV of ths London

~u~l;_i~：叫：﹔s~；；~﹔：l~~o：~﹔記~；；.了， 19札“Method of test for re叫nae

12 13 8 5 8~

,,, )

BUILDING (CONSTRUCTION) HEGULA'I'IONS, 1956 37

TABLE XIII.

Reauotio札 faoto1· foγ slende·鬥iess r叫：io.

Rrioks αnd building bloclc’. (sub• emdaiion (2) ). 一一一一一一一一一一

Slenderne且B F且ctorSlenderness Factor

~a tie. Ratlo. 一一一一一一一一一

1 1.00 10 日，BO

2 。’96 12 。 .5 ﹛）

4 0.88 14 0.40

日 0.80 1口 a.a 日

8 。eη』 nu 18 。.30

The factor for intermediate values of the slenderness ratio shall be determined hy interpolation.

fi9, (I）九Nhere, in the case of walls or piers built of concret ﹛~. Maximum the slender肘ss ratio of any storey height d閃S not exceed h ;:;::;:r ;;e the compressive str臼悅目 in such 且torey lieight sh且 II not exceed w叫！~ 8;nd those specified in Table XIV for tl1e designat巴d grade of cone削巴．叫叫et;

(2）九V'hcre the slen<lemess ratio of such storey heig·ht does exceed 1, the compressive str巴sses in that storey height sha Ii not exceed the appropriate stress specifie<l in Table XIV multif﹜ ll飢 lby the factor specified in Table XV for lhe slenderness r!ttio {) f such storey height :

Provided that the slend巴mess ratio shall not exceed

(a) in the case of a pier, 18 ;

(b) in the case of a wall ; with the minin111m reinfor凹ll!Bll t· specified in sub司regulation (4) of this regulation, 24.

(3) The compressive stress shall be 由eined to be the su!ll of the dead and imposed load distributed uniformly over the an>a sustaining such IO'ad.

(4) （的 Shrinkage reinforcement shall be provided in '111 concrete walls.

(b) The ‘volume of that reinforceme叫 shall be not less tha 11

0.4 per cent of the volume of the concrete in the wall, 且nd half of that reinforcement shall be disposed verf icall y and half horizontally.

白干旬，潭、－.~－· "J

'f

←）、

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:Ccenlric lllds ~hr) lleral Jrr.e 討 on

lend盯•nll且

九

iLF

E

訓”

口O

QU

l！已I竺~~c~~七月，，~~UC'rION) REGULATIONS, 1956 } {4

1>

, .. ‘ BUILDING (CONS’TRUCTION) REGULATION日，！”“i

（口） The reinforcernent shall be disposed near the wall su 「且face ancl the spacing of bars shall not exceed 12 inches. (2) Additional str.esses of a purely local nature, as at girder

bearing·s, coiumn ba古巴，甘 and lintels or other concentrat堅d Ina { Is, are to be calculated and the maximum stress re~dting· from th的巴comb in巴d with those provided for in regulations 58, 59 and 60( 1) shall not exceed the permissible stress given in reg·ulations 58 and 59, as the case may be, byπ10re than 50 per cent.

(3) In the case of walls of bricks or building blocks } no reliance shall be placed on the tensile slrength of the bricks rn building blocks.

TABLF, XIV.

~a：~﹔﹔九﹔﹔1：﹔﹔﹔s~／ c：~：；： t；~ ~h~~ ~Ji1~ :1::a，﹔＇~~~；？αt﹛o does πot ewceed oπ8.

Designation of concrete, as specified in regulation 1 日，

旦”越e r t MO

GU l ’hυ a-

dn qJN --

l n T

e hua

n - - 1 -

n .I E a r『AARH

tons per sq. ft自 lbs. per sq. In.

Grade l 50 78日

Giarie II ’..‘·····. ..‘ A . 44 680 (;rade III

3日 600 [haJe TV

．．．－可－ .., 20 35 日Grade V

司B " 哩， :lf] u

61. (r) vVhere an external i.vall is constnicteJ of materials Panel used in combination with a framework of steel or reinforced co11 walls crete, any part of that wall which does not sustain and transmit any load other than that due to its own weight and to wind l> res-sure on its own surface may hf, deemed to be a 另eparnte panel wall ‘

(2) In ever}F panel wall construr:ted ({itherwise Lh an as a cavity wall）。i bricks or building tilυcks 一

(a) the thickness sh州 be not less than 8i inches tlii 叫叭叭lll I

( b) the height shall not exc巴巴d 24 ieet ;

(c) f'ithcr the heigl1t or the \en 位 th (whichever ls tbe less } shall not exceed 18 times the thickness j 且nd

( d) the base shall not overhang the beaII1 upon which it is supported > to a greater extent than l of the thir、：kness of the panel.

SlenderneAR Hatio.

TABLE XV

F’的： tογ Joγ slenderness γαtio. Coηcrete

I F叫】I / Sle的＇.ness i I Ratio. i

i。一 l 刊（' I”!

川 1 14 /

o.91 I i 日 l

0.85 ! i I 18 I 0.79 ‘ l I I 21 I

0.'78 r 24 I

(J) In every panel wall constructed as a rnvity w且＼！

(a) the provisions of regulation 53 shall be complied wil\1 except that the inner leaf may be constructed of solid or hollow bricks or blocks not less than 4 inches thick ;

( b) .the heigl1t shall not exceed 24 feet ;

(c) either the height or the length (whichever is the less) shall not exceed r2 feet;

(d) the area shall not exceed 200 square feet ; and

(e) the base shall not overhang the beam 叩on which lt is supported, to a greater extent than l of the thicknessοt the overhanging leaf:

Factor

內，1

唔，Avhun

叫MAHν

呼bah

gnmE443 00

臥弘

anL

川，心

A心局內HV

仇Mυ

10

d…；；~~，e~t~；r i：~ 60, (I) The maxim urn stresses s e . L

1 50 尸laY be exceeded 句叫 1nore 心i~：~ in r巴巴11山川 58

2：﹔﹔： t~~~s~~H止﹔i}: o~~~~~﹔心Y 。汁。也是11~rw~oe7a~~~~；

40

P E t -dM

VJeM ise3t 叫hHbyr

aaz 、JYO

仇。

}vvthut

BUILDING (CONSTRUCTION) REGULATIONS, 1956 BUILDING (CONSTRUC'rION) REGULATIONS, 1956

l l t

properly waterproofed reinforce<l concrete of not less

than可 8 'inches in lhickness ;

(d) ho伽ntally tl叫gh the wh山 area of the bt：~~l;l:n~1~rrr~t~ 。a chimney above the roof ; and be connected t tl P

flashing-.

Provided· that, if the bottom courses are built solid for the full tl1idrness of the panel wall to a height above its base at least equal to that full thickness, the base may overhang· the beam to an extent not exceeding t of that full thiclrn巴ss.

(4) Every panel wall 凹的truct•ed of reinforced concrete shall be not less than 4 inches thick in every part.

PART Vll.

62. (1) Every party wall shall be r:arried 叩 to l he u n df:'rside of t］﹞巴 roof.

Firepl.aces, flues and chimneys.

any ~·；°＇（＇~h ~＇；，＂；：＇~~＇.：：~n:'.:t：~I ~： c：﹔n~~~s~~bl: 11;1~~~＇. i~﹔﹔l幻l ~l~ ~~~s：~tf :8 p出vided with a hea叫l of concrete stone or other like inco的usti·· he<trlh:. ble material, level with the floor,' under and before the fireplace

or stove.

(2) liVhere the roof is constructed of combustible material古巴

（日） no combustible part of such roof shall be carried across the party wall ; and

( b) 1 he roof covering shall be solidly bedded In mortar direct 。n t!J e top 。f the party wall for it且 whole width and Jen£;1 ll.

( 2) Such hearth sh且 ll

（且） 1>e solid for a tbickness of not \ess lhan 6 inches in evei ;

nart ; ﹛的－extend 叫 less than 6 inches beyond 航li si咐。f Lli 吧

tirepl且ce or stove open Ing ;

（ι） extend not less ll1a11 r8 inches in front of tlt 巴 fireplac巴（）：stove opening i

（的 if of 巳oncrete be reinforced with not less than o.144 squarr J inches of reinforcement pt>r foot width in 開ell directiu11 ;

h山er 仙t 63. N 仆 floor or roof joist b\Jnd limber {]r ＇凡rood plate shall tu b 巳 hui!Lii ] 1,, walls. he h11ilt into !h 仔 thickness οf any wall.

電

ι，

QL

v

吋AIs

1υI

恥

υu

iI

、J

lnA

什U

J～石

61J .. (1) Every 明•all built of hricks or buildiug blocks shall be conslrncted with ·a damp-proof coursfl 「omplying with regula-1~1 on 宮。

(:.!) Such damp-proof courses shall be constructed一

(a) horizontally through the wall 且 t a height of not less than 6 inches above the high.est finished level of the external g·round or paving or the surfac巴 of any oversite concrete on either side of the wall ;

(/;). lwrizontally under the coping of a parapet W且 ll ﹔

( c) vertical! y on the outer face of a wall where tb e

g-n1Und surface on the outside of the wall is higher than any floor of the building, together with a horizontal damp『proof course under the floor:

Provided that such damp-proof course may be omitted where the floor and wall 且re constructed of

，

α

ρu

t rA ) ( nv ) i I - nb y l 戶，u

t a HU 口可

ρ切

,d a ρ切

可J

、、4／

nu (

6回 I Any wall of b ‘s or t﹜ 111ldi呵 b\o﹛；ks al the 山：k ：﹔J~~；﹔：﹔﹔: ; ：﹔~；！怯e~~＝lllo~﹔﹔l﹔：~~：~~s﹔ t：﹔lthick.

1eve{2t;f ﹔：立3比~~ ~~~~口s:h:J~：l:li~；﹔；~~：~－0~1~1 jt~丸~＇.＇.~the firep,lace is situated :

p叫ded that where the fi ue from that fi吋的 is I b且ck with another flue such 仙！mess shall be c叫做I up to ~ helght of not less 伽I﹔ r2 inches abov巴 the level of the top ot

the fireplace opening.

- ，...，..~

tl2

﹜ρitepl仇cesLr' lia ve fl11ea

7﹜iinn1巳ybe ！εS to e can司（l L﹛J電re I [iof,

" BUILDn可G (CONSTRUCTION) REGULA'l'lONS, 1956

BUILDING (CONSTRUCTION) REGULA'l'lONS, 19f1li od l t

than (;i i·~·~ ：﹔﹔﹔：＇＇~＇.~~＇~｝：：~~﹔：巴~l﹔j ：﹔：﹔~tr：：〔

(b) 3 feet wber月 us巴d in connexion with a fireplace burning :;oliJ fuel or oil.

(2)’fhe height of every chimney slaιk ·measure{t from the level of the high巴st point of its int巴rnection with the adjoining roof or gutter to the top of the stack, shall not exceed 6 times lht~通

least horizontal dimension of the stack unl 巴ss it is ad巴quatelvsecured against over-turning ‘

(3) The topmost 6 courses of every chimney stack cυnstn1cter\ of bricks or bull ding blocks sh且11 b巴 laid in cement IT\()rt且 I', 。 l

cement lime mortar containing ,not less than I volume of cement to every 6 volumes of sand.

(4) 的 Wt閃閃 the height of a chirr the lev巴i of the }iighest point of its int 巴rs吧ctio11 with t}1 e adjoining roof or gutt巴1，巴xce巴ds 5 feet, the p且I t of 弓11 ℃！ \

C}iimne}y stack 且﹜Jove 5 f巴巴t may be conslrncled of ITlCiaJ pipes, ad巴quately stayed to restst wind press11rl"., anJ with a cross sectional are且 not less than three quartPr'i of lhe cross sectional area of tlle chimney Staιk below 可and in any cas巴 not \ess than fi inches in i111 們 11 月 i

<liam 巴tcr

or S泣 ~I;te~~s：認：c; ~~Jc~ ＇. ~sb~h﹔江e~e~；：1h filr~：J：~ory fire 川（5。7. (1) Every fireplace shall be pi oγided with a chimney.

have（~；s ~~~~e~eu:.olid fuel or oil is burnt e叫亞州峭的：11(3) The .~ue in everv s11"h ·i 、

J ::>ucu ci11n:iney shal卜→

In) ：，~e ::,;• ；~~，，＂~！ ~n~；，~ ＇：~＇. 0~：＇，＇~＂~~＇﹔0~ ＇.~e:t~~ ：， ;or oi! be

(b) where us的j for an o en ( （口fired appliance- p l) 1門tic、 E的 fire o ：也 other gas

(i) hP- 11 刊 l less ! li1:'.n zn squa1 e ill aren ; and ches in cross secllonal

(ii) be encased 1 in incomhustihl1• rn t

in cli [ hick exclusive of I} lastertru:r: al not lf'.s~ ； tha,;

enclo~ ： J~；i~~~ ~：：﹔o；~ls may 戶 left in 叫l 叫的ia!c not connected therewith.

(4) Every such chimney shal! 一

（“）：：﹔7：﹔~er~：d or 門eted on the insid巴 or Ji咐 witl﹜ a閃re or other like inc{Jmbustit} le material · a <l （的﹜） l：﹔7：巴叫 for a fi州ace b叫ng 叫d fuel or ~1;il be

：﹔叫~~：〔﹔：：：﹔i1~fothick﹔．一】ncrete ’ not less than 4 inc}1es

Prnvided that soot doors rna cliim neys. Y be inserted iii such

( v} Sucl1 pipes shall be constructed一

(i) 6f 心Sl iron, not less tha11 3; i1wl1 t\ii,· k 叫 ;iny

point ; or

(ii) of mild steel plates not less than 3/ 16 inch rhi ';); :

。r

(iii) if used with a gas-fired appliance; of steel metnl of a thickness not less th且n No. 20 Standard vVl1e G日ug門

（ι） AU metal in flue pipes shall be protected 且gains\ con[)

s10n.

自9. (r) No timber (other than wood plugs), or other com- Combustible lmstible material shalt.be placed in 且ny wall or chimney within ,tr\以叫＿ii｝日g inches of any flue or the inside of any fireplace openi心﹔﹔﹔itl~l ot~，＇

(z) No wood plugs s﹜叫l be driven in to 且ny w且ll or chimney c iimne s

within 6 i叫1es of any flue or the inside of any firepla開 openi刊）

(3) No woodwork or other combustible material of the sur •

round of any fireplace opening shall be fixed round thal openiu 起unless it is一

：：：：叫，：~~：~﹛~t~~~：叫：1﹔c~i:nca~i;hd ll~~ ：~J：~ni~﹔ （刊）﹔品：：~ ;here used in 心叫 with a g的－fired

44 ~~空空~~~ONSTRUCTION) HEGUI,ATIONS, 1956 BUILDING (CONSTRUCTION) REGULATIONS, 19 日G ,J.5

0/ 1~i恥n t at least 6 J'n<;hes 叫的l間i ﹜叫zon叫V and

i已：n﹔~~t …叫 1吋ally from 削 firepla﹛：e 午P已n

(ii) solid [)' 1} a eke<l. ~烏司 itli in<:E>mbustible mat巴rial

(2) The bottom edge of such hood shall be not more than 6 feet above fio~r ievei and shai i cov巴r the area of the cooking slab.

'iimney nfts 、！~· E:'CIγ 【：himr

provrsJons ’

7弘 No· floor or roof of combustible material ~hnll be con吋（：巴ili11 且、s

str ted over any 后rep!ac巴， h凹ti呵且pplia1solid fuel or oil fuel，耳;vithin five fe巴t of Lhe top of such fil'epla【、e, be pγ﹛，－ heating appliance or oven, unless protected with a lining of teeter!. incombustible material not less than 3/16 inches thick, covering a horizontal area of not less tlJ"an 100 square feet and so arranged as to give the most e仔eclive protection.

(r) If h>llilt of bricks一

(11) it shall ~e constru咐d of suitable solid brick.~ jointed with SUit且ble mortar;

( b）﹔。：2日：1：叫：c~~；：﹔，·~ ~~－c~f s~：r: ~：g﹔也t.pt~ly~batter of at le且st 吋 i叫1凹 in eve

( c) ~：~~~11~1r~：~gh t 叫1ey s}iafl, shaJ J not e才ceed the least width of

the base multiplied by

,(.? 1 o times if the shaft he square ;

\ii) u l11nes if the shaft be circular or polygonal ; 心的 the thickness at the top, and for 20 feet below tlw

to1 > shall b日 at i 巴且st 8q i11ch 吧5 ﹔ 口

（仿） ~＇.~r 1 片： pu巾se of 仙 is 「egulatioas巴 mca叫 t!1e unde叫de of tb 日 co…戶，……：“

﹔：：l~Jc7r~：~~ ct;l;etl~：o：﹔：信心：1~1~1ft~r if ~~﹔﹔：：：n~n0e~~﹔ (2) If IJuilt of reinforce l r con ﹛：r巴l e, it sh且！！（：﹛） lDp ］﹜F with tht '

·!II ＇~：：：：：﹔﹔﹔﹔so﹔ （ι ！） lf l} uilt of mild steel s}iall be co 『 l

叫“ less than J/ r·6 inches 州｛ :l~：Ir﹔﹔﹔~：r~~ ：﹔斗：！訂戶。tected against wrrosion

(,f) ﹔1】L曰ir：﹜：﹔：：11e﹔＿ii：﹔j ﹔：：：﹔l j ~~dli：﹔：扎 t~h ！~~﹔w﹔：：~kn巴臼

i,;:}O

﹞311i ；~~：； 1 ＇~：~：iffi＼~t~10i~＇人：：：~，，＂~~~~ ，~；；：；＂~u；，＂：：＇；；＇.~~n~~Y '.'"

PART VIII.

Roofs.

73. (1) The roof of -every building 且nd of any mi110r H,l(•fs structu1 e placed above such roof except th巴 doors, and frames tr } he I

""' eγ ＂ I of dormers or sir ] F lights shall be covered with ! i!es, g!n.阱， m什nl，巴

。l other incombustible material:

Provided that. wliere a roof is co11slrnd巴d entir巴ly l}f inro111 busti!Jle materials the external covering may consist o「

(a) rock asphalt containing noL more Llwn 17 pe1 cr·nt !iv weight of bitumen; or

(b）且 layer or layers of compressed alld impervious felt membrane roofing having an aggregate thickness of JJOf more than tt inch bedded down solidly on the roof Liy viscous materials.

(2) \Vhere the roof is covered in the m且nuer provided by sub-regulation (x) (b) and the slope thereof exceeds 20 deg間的with the horizontal, the 己xternal layer of such roofing shall be surfaced with a rninernl dressing·.

74. Every roof shall h一

（ι） weatherproof ; and

dXIF

(b) provided with adequate gutters and rain water pip的（ (Iprevent the direct discharge of water upon or over 日 n _1· footpath or roadway.

Hoofs L [) IHJ weather proof.

,,, ，一’，「

一，，

;J

4{;

Accessible } oofs to huv 已parapet or tailings.

Hollow Q位ilings

民 i eel frlirned and rein for~ecl concrnle strnct11 > es只tnicluraltimbers

BUILDING ([)ONSTRUCTION) REGULATIONS, 195G

75. Every part of a roof, to which internal access is provided 』shall be protected by parapet walls or railings nol less than 3 ft. 6 ins. in heig}lt.

76. 九Vhere a C已iling is constructed with a space between it and the floor or roof above, such space shall be properly protected ag·ainst vermin and in the case of a timber floor or roof} such spac巴 shall also be adequately ventilated.

PART IX.

Structural ttse of Steel, Reinforced CoηCT?t8 日nd Timber.

77. ( [} St：巴el framed 月1ru亡的ues reinforced concrete strnctures and structural limbers shall be ctesign吋 in accordance with tiw relevant provi::iious of--

(a) th 巴 London Building By呵laws, Memoranda and Regulati on且， issued by the Lond廿11 County Council 011 the 1 s [

day of January, r938 ; or

刊） the London Building （仁υnstru叫anal) Ry-laws 1952, issued by the London County Council <J!l tl1e 1st day of Jarn1ary1 r95:i; 01

(c) 訂吋 Slit}sequent amendments to lhe London Building (Constructional) By-laws, 1952 issued from time to tin1e by the London County Co1rncil:

P 1 tivided that－、司

(i) the maxim山n loads and permissible stresses shall be those ex.elusively referable to the particular By-laws in accordance with which such strucfure is being designed ; and

(ii) notwithstanding any provisions to the contrary, all sud}. structures shall comply with the requirements of l巴gulations 22 and 23.

(2) Where 剖1y steel framed or 叫nforced co肌卅日 struct盯E

is design巴d anJ constructed in accordance with the provisions of sub-regulation 1 (b）。r i (c) the str叫ural 【letails and calculation required by regulation 16(2) of the Building (Admin叫istratio1 l ) I丈巴gulnllons shall b自 I﹜repared and signed 1>y a person qualified 品s an engineer as provided by regulation 4 of those regulations but excluding p巴rsons qualified as an engineer under sub-regulation (r) （刊） (iv) thereof.

BUILDING (COl可STRUC'I、tfi

(3) Structures may lie designed and constructed in pre

忘記ls~0﹔﹔~J~~t ＇；~＂：1~~.f.'i~~：；~~n ＂~i'.＇.﹔忘記：：~~~~~~1 r~l'r;;tl' Building Authority reg且rrling the soundness of design

PART X.

I司lhαT1！日 s, piers arid se日『walls.

oier 7:i~al~~：〕i：早已l＼﹔：﹔·e；~t：：~~~tJ~tt:a, ；：：~1l﹔~t~~：；I川江ft~~~ ~1~l;i詰lBuilding A叫10rity.

PART XI.

Retαining Wαlls.

worl~，9~1 ﹔﹔：t~）i['.1 ：：~fr\ f：：﹔乙：1：么？：：﹔~~t:;:t~： l：；~~~~＇.llf/idb﹔；~；（！： MnLeri 仕的support the ground which they retain.

80. (r) Rx「＜＇ pl wbP.re steel sheet pi!in~ is use〔1』扎 f【Jlll ailon ~﹔：：：﹔d of C。鬥er研l~ shnll l呻 I】！｛川巾d on 叫 id, 11ndi吼叫“i g-rou nd 01· 011

piles. (2) Such fo11ndatkin shall extend for tl1 日 full Lhidrnes古﹛ if

the retaining wall.

! \

81. Reta)ning walls constructed of brickwork slwll he pre } jll:'I- Hrickworlc

ly bonded and built solid throughout in cernent mortal

自色’ Retain Ct~‘ment mort且l or白dry ’ I n either case the wall shall be prope1 Iv

bonded.

83. (r) Retaining walls canst川ted of brickwork or masonry ~~~1＇.~es exceeding- 12 feet in height s}1all be provided with one or mo『e re {1uired bond co~ rses of concrete, in no respect i伽ior to Gr且也 TII 且fleast r 2 lnches in depth :

Provided that bond courses of reinforced concrete may he less

than 12 inches in depth.

(2} The distance between the foundation and the first of such bon﹔﹔叫ses and the distance between any two adjacent bond courses shall not exceed 6 feet measured verticall ｝人

'1B 于內空！竺？一（C側STRUCTION) REGULATIONS, 1956 . BUILDING (CONS'rRtJCTION) REGULA'rIONS, 1956 4!3

Weep boles. I 84. (1) A weep hol巴， with an internal diameter of: not less

﹔~l~l 」乙：1﹔1日出n~e~﹔；~~ided to every 4 squar巴 yards of th

1> I ovided that weep holes may be omitted in retaining wnll耳一(a) cons﹛ I'll ﹛了ted of masonr}y built dry ; 01

-

(/J）﹔1~：~~111r：~ 0tro withs叫 ma:x;imum p叫凶 hydraufic

(c) ~~i~﹔：﹔e；.﹔：~ ：~：s~／／，~：~！~~ ge 圳仙叫 I叫ning wall

(z) A layer of l山ld-p恥ked bt"Oken brick or stone at !east r 2

inche,s in thicknes_s shall b巴 provi的i at the back of every 叫ai咐Ewall except retaining walls built of masonry laid dry.

p B﹔川 retair~；~r~ 叫的all he 戶ovided with a 阿巴l﹔﹔ι；·e~f ccrnc:rete or o l叫

Fb l r nμa

nu

.'<11rfa~e channels.

Per 111isslon t'e吐mre﹛lfrom . Bu ildini;A uthorfl.y tυsink or reopen wells.

L可rells pro liiuile1l in 、： ertaiu。laces.

90, (r) Every excavated well except in solid rock sha.ll be Wells tn 11~ proper lined for its 叫ire depth with brickwork, or other suitable 日﹔位 arnlmaterial 且nd such lining shall be provided with suitably fixed iron rn1nired. rungs or foot 'rests not mor巴 than 2 feet apart for the 'entire depth.

(2) The lining of every well shall be rendered impervious for a depth of not less than 6 feet from the level of the adjoining ground.

(3) A suitable filter of clean .broken stone, gravel’。r sand shall be provided at the bottbm of every excavated well.

91. ( 1) Access for cleani咕 purposes m叫 be provided for Access fnr

ev的巴xcavated we!l. ﹔；~，，叫~efilling

(2) An e丘i.cient dose叮叮tting cover shall be fitted over tYfry cove~· well. I'equil'f-11

B~l~ Ad叮叮 chan的 laid to sui吋eg叫咐。I paving in

0；：~~t：~~~~§~~~；~：月2﹔I注：r~：：~：~；~ ：：：~~，~：.，~~~ 92. (1) The t廿p of every well shall be suitably proleded tu Channels

p附ent the direct en川 of any surface water or 叫＼age water. t~＇de:；~＜~1~1\\\g

(2) The ground 叫face adjoining the top of eve門 well shall 出﹔；r,':fng·be paved with suitable impervious material for a dist且nee 仆f 11ot ＼ υp of

wells less than 4 feet in every direction from the side of such well and ，制Ill i re11 so constructed as to slope away from the well to a suitable channel.

PART XII.

93. A suit·able parapet wall, not less than 2 feet 6 incht>s in Parapet hei~ht, shall be constructed around the t叩 of ev川 we! l from 叫ii臥lwhich ·w:iter is to be drnwn by means of a buckf't. where

wat盯 isdrawn by " bueket.

Wells.

叫 J心：1﹔：﹔ J ；~！：﹔﹔：﹔：：﹔＇.rnk or rr,opened wi川t the pe川 PART XIII.

Fire Resisting Co仇striictwn.

9it.. For the purposes of th 巴 regulatiGns in this Par t一一 ln terp re talion.

側， No well shall l} e sunk in the vicinity of any septic: tank, cesspool, sewage sump or in any fou! ground.

''basement ’, means any storey of a bulldlng or 且ny compartment which is wholly below the level of the street or streets on which such building abuts, or being partially below such level has no acc:ess to such streets in the event of fire ;

"compartment of a. building·" means any volume, or floor area in any one storey, in any building assessed as a unit for the purposes of Table XVI; r~；：，t}I7i~~~rli d ia m~~~r ~~ ~i I﹔：；~； t~e per:cv~~：叫﹔：叫：~~：＇~~；！﹔~SU自icien

、J )

~

"elements of construction,’ means- any floor, beam or column i

,;

戶） - －~Y山）的。（CONSTRUC'I'ION) RlDGULA'rlO悶， H)

Atljaeent buildings.

TI,lemenls Of Clll!· slruc ti on wilhin buildiugs.

»'

J

TABLE XVI (C。如lt.)

.• I· .f tl~ij~：＼＇.？iil~~＇.~~f ?Ki:'.! tf ~＇.；~i：＇.~~；叫BUILDXNG (CONSTRUCTION) REGULATIONS, l\355

Class Volume, or floor area in k叮叩e \ Fire .. l 、！ H.e~iHtance s切rey (as the case may be). i ' u 1 1 Period.

bllil a iaving 且n F.I之 P. of not less than 4 hours.

~~~~；~﹔：﹔）川心d that 悅c;1 ~！巳m坦川 of constr叫。n in an JUI ing __

t~：：：,J~ ~~（＇：﹔；ds 3 storeys shall in m 叫﹜1叫 an F:'f~~p~~Jdj~ss 'PARLE XVI.

t;Jasg I Use V u:;1me, ~r floor area in any one I ~＇ire st.o叫（ as the case may be). I Resistance

' I ·Period.

（ α ） M叫叫Bulk Storage or ware ho11se

I purposes (b) More than 5{J,000 cu. ft. but not I 1 h口ur：﹔，j~~ne than 悶，ooii cu. 九 in/

(a) More t川 12圳O cu. ft but 叫 2 hou內括：~le.than 250 ，日00 Cll. ft. in I

2 I ；：：注：ll (a）川平eth~han5叫品：L h~£＿. nf; I ~ hour. vιJume.

( b ）耳fore than 125,DOO cu. ft .. but not 花了：e than 250,000 cu. ft. in

ume.

(i) n。i仇~OT0~﹛“t:_h~n 7’600 眛 ft. in I i ]IOI>

... UV.L tl.J. 包ιlh any one storey ; i -” A

(ii) ~nr~凹；~h!n 7,500 略 ft. In floor j 2 h{]1 戶﹜叮 •n any one storey. / "

Use

生 hours.

(b) (i) More than 125 』000 cu. ft. iu I 1 hour. volume, or I

(ii) More than 2,500 呵， ft. in floor i 1 ho川可缸ea lI

{n) (i) N?t m~re l!l vυi ume. :

(ii) More than 64,000 cu. ft. but i J hollr not more than 12月 IHJO <'ll. fl. I in volume. I

(iii) More than 12fi,OOO en. ft. hnt I ~＇ hour日not more tha11 250,1﹜0。 cu. ft..! in 叫

(b) (i) N哼 more th'.1 『1 圳0 sq. ft. in J A h<] llnoor area m any one sLorey. /

（均 More tha.n 且，500 叫. ft. but 11叫： l l叫lγ于pre than 5 ’。00 sq. ft. in i noor area 111 any one storey.

, (iii) More than 5,000 sq. ft. in floor I Z hull!

I ~~：~γ？！？γ！ ~artly (“) (i) Not more than 32’。00 cu. fl. in\ ~ honγ－ tor volume. '. dornestic ! purpos臼（ii) More than 32,000 肌 rt. lmLI 1 1川r& partly not more than 帥，﹝）。o cu. n.1 for in volume. I

£！~~~；e, （位i）叫：iun~~.an 64,000 cu. ft. 叫 2 hours. any part 1

r：：~／~~ (b) (i）門 more 仙n 1,000 sq, ft. in! ! hour. manu- noor area In any one storey I ;facture. (ii) More than 1,000 叫. ft. but not/ 1 hou

pore than 2,500 sq. ft. in -!loor area fo any one slorey.

{iii) More t~an 21500 問. ft. in floor, I 2 ho肘ιarea 1n any one storey.

B 0侃ce or domestic purposes: s~hoals hospitals.

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\purposes i & ?artly i for I trade or lm.anu I facture,

ia川rtused for trade or

I manu-j facturn.

5

ll2 BUILDING (GONSTRUCTION) REGULATIONS, 1956

TABLE XVI-(Condt.)

Cla削 Vol~回到 or floor area in any one sLorey (as the case may he).

l<"ire Resistance

Period.

URe

Transformer Ch.amber or purpose involving a sunilar fire risk. 2 hours.

7 Garage （α） Not more than fiOO sq. ft. in H口orpurposes. area. ! hour.

(b) More than 500 呵﹒肘， but not mar., I 1 ho than 1,000 sq. ft. in floor area.

( o）川 t岫圳 sq. ft. in flo…ea. I 2 hours.

(2~ S<1vewil!tthecons吧11 t of the Bui 且 1日且 01 iu one compartment used fo「 hulk sto吋哥 or ~arehous巴purposes shall not exceed 7,500 sq. ft. b

fJ) W l~~re a 叫l白 st吋 building 的S I叫 exceed 2 伊，000

1﹔﹔n 么》l ﹔口 l﹔~~I：：﹔：二﹔﹔r﹔：i~~l ﹔』a~﹔〉﹔巴：﹔：：：﹔：唔且rd1ng the u叫 S叫叫做圳1 閃gt削﹔in 77,

tig心］~~1心i﹔二斗：此﹔江irg 盯： ~~very con

﹔2丸品l》e ~﹔~：ol:s: 11011 rs .

}1l'Ovided !hat this regulation shall not apply where adjoining com part men ts 且re used solely for domestic purposes.

Sta1reases‘ 98. ( r) Each eleme叫 of construction of a staircase shall have

an F.1之巳 not less than the period 叫你ed for each eleme叫 ofconst~t1c:1011 of the building 、otnpartrnent in which the staircase 1s sJtnaf 日ti:

叫：﹔﹔v:;;e:cc~＇.－~tar：~！swft~~泣~~a﹔：a~~ ):1ot a州~

BUILDING (CONSTRUCTION) REGULATIONS, 1956 1 ．全

vnv

(2) Where a ·-staircase S{lrves more than one comp泣的nenl' of a building－了

（且） such staircase shall be enclos巴d by ·walls, and

(b) such walls shal) have an F.R.P. not less than the long<'r period required for the elements of construction in any compartment so served:

Provided th且t this paragraph shall not apply to any external staircases open to the weather on at lr且st two si<l凹，

99. ℃Vhere compartments of a building to whlch ll1e p T叮叮 Topmost 叫slons of 1eg11l且tion 97 apply are situat巴cl in the topmost storey 也lor<eysof a building, the walls required by that regulation shall b已亡的I ied up to the underside of the roof of the storey :

Provided th且t where the ceiling is formed beneath a pit仁Ii ed roof, the walls need only be C且叫ed 叩 to the uncle叫巾。f the rnnf tiu as to form in the roof space vertical firechecks at a distance <1part not exceeding I 20 feet.

100. Walls separating compartments of a building nrηndnsinr; Op月1ing·s

staircases, in accordan閃 with regulation 97 111· 9月， may l1flvf' ﹔：p:1~ilng openings where corn[mrt

men\s or （α） the door and frame of such opening has an F. I~. P. e:wlosi11g

s1ai1 eases (i) in the case of walls separating cotnpartments ~ hour,

or (ii) in the case of walls enclosing· staircases ~ th巴﹝Jeri叫

required for such walls ;

Provide<l tl>at in no cas巴 shall the doo [ have CJ.11 F .R.P. less th且n t hour; and

( b) such door is self-closi咚1 except in the case of such a door in a domestic building which doeS' not lea<l from a staircase to a corridor used in common.

101‘( r) Borrow巴d lights may not be provided in walls Borrowed sepamting comp且itments of buildings in accordance with regula 一 lights.tion 97.

(2) \Vhere borrowed lights are provided in walls ene\o:;ing stii.ircas巴s in accordance With regulation 9日 such lights shall－一

（ι） not exceed r /5th of ~he total area of such w且!l, and

f ’ :

)'J J

6吐 mJrLDlNG ((;ONSTRUCTION) REGULATIONS, 1956

(/;) be glazed with l ir叫l wired glass in [1xed hardwood frnmes not less !lrnn r ll: inch巴s thick or slee! frames in

panels not 巴xc巴ecliug 4 sq. fl" or with glass bricks or blocks in panels not exceeding 40 sq. ft. in area, witb expansion joints of 1/10 inch per foot width al bolh sides and at the top of the panel.

Baseinenls. 102. Each element of construction in a basem巴nt shall have

an F .R.P. not less ttian twice the period required for the elements of construction of the building or compartm巴nt thereof in which

llie basement is situated :

Provided that no basement need have an F.R.P. exceeding 2 }10\JrS.

COUNCIL CllA~lllER,

r7th April, 19,\·6.

D. c. c. LUDDJNGTON,

Clerk of Cot川ils.

Ex令 lanatory Nate.

These regul 且 lions are the th I rd In a group of these en且cted under, and coming into force with the Buildings 0 rdlnance, 1955. Heference should be made to the introductory pa8sage in the Explanatory Note to ll吋 Buildin 區，s (A<lminlslration) Regulations. Compared wtth the pm visions of lhe Buildings Ordinance (Cap. 123) these reg-ulatlons concerning congtruction lay down the requirernents in {;Teat detail. The provisions concerning piling {regulation 3日）， those dealing wlLh the st.rncturnl U耳eof limber (regulation 77) and ~hose with fire r~slsting requ!reme1.1ts (Part Xlll) have no counterpart in the former Ordinance. In the main, the regulations consist of highly lechnicfll rules; and for this reason it is proposed t.o comment only on two m11tler且，

2. Part VI, which deals wilh walls and piers, includes regulations for determining their thiclme8S in one of three ways: this may be done by calculation based on the maximum compressive stresses permitted in the materials uQed (regulatioll 國 67 BO), by ca1culation in accordance with the relevant British Standard Codes of Practice for \oad baa.ring walls，。rfinally by complyin耳 wiLh the detailed "rules of thumb" in the case of lrnild1ng且 not excee<ling fout· storeys In height (regulations 4 日 52). Cavlly wall co11atruction is being· permittiad for the first t!tne in Hong Kong (r-egulation 53).

3. Under the former Ordinance steel-framed nnd reinforced concrete huildingg eould be <leslgned under London County Council By-laws of 1 日 09and 1015 which were repealed by the London Buildh1g Act of 1930. Reg-ulation 77 now permits desig·ning of such building眉，且nd also those etnploying -structural timber, in accordance with the re.levant provisions of lhe London Duildh1g By-laws, 19 眉目， or of those of 1日52 with subsequent amendment昌， Many of the_ae 1日的 b}'”laws were bl\sed on recommendations contained in the 1948 British Standard Oodes of Practice, and these state lhe 1.1asurnption that such designing would be 目ntrusted to chartered atrnctural or civil engineers Bxperienced in the structural use of ~tee! and reinforced concrete. It has therefor. been thought neceBSary to restrict the uae of tlieee 1 日52 by-laws to certain engineer國 qualified under regulation 4

心已1~~：:1~~11民~le~aii~i~~﹔如~t扭U﹔在~oan!.na ~~ic~叩詣，~z~~·e﹔﹔~~ti~；

' 1.:\

' .

l ·f,

BUILDING (CONSTRUC11'ION) R!TICi ﹝JLNt'WN 日＇ l\lfi

the qunlified engineer. All authorized archite叫百 m且y, however, suhrnit designs in accord且nee with the 1938 by-laws ;(which are llO long-er acce1i I 叫

、出s立eo~·~h~.）1﹔~·~u！~d tt﹔I5w~~｝﹔~slo~Ll﹔hb﹔r:n~~＼~﹔也﹔i；~，~~：﹔：e~~s1；汀unecon日mlcal in the use of materl"als. In all caBes there is a fllrlher safe gnurd to be found in the provisions of subseelion （品）。f seetion 9 of the Ordinance which empowers the Building Authority to preseribe conclilio11s concerning the five specified matters. Since !lL1thorized a> c!.iteels a1 e permitted to use th~se L.C.C. l>y-luws, there wil] be fom1 {i only fo\11 regulations dealing- with loads (regulation目 22-2fi ）﹔ the first of t.h日se, whlch deals with the effects of wind, has been prepared to lake 且ceount of t.yph ＜＞。 11winds experienced lu Hong Kong.

(Secretariat r / r /74r / 52)

building ,(construction) 1956 · ‘'domestic building" means n building constructed or...

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