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“Invent a New India Using Knowledge”

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“Step Out From the Old to the New”

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“The Right to Information, The Right to Live”

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“Knowledge is such a treasure which cannot be stolen”

“Invent a New India Using Knowledge”

है”ह”ह

IS 2452 (1985): Hawser-Laid Cotton Rope [TXD 9: Cordage]

IS I 2452 - 3985

hdian Standard SPECIFLCATION FOR

HAWSER-LAID COTTON ROPE

f Second Revision )

Cordage Sectional Committee, TDC 14

Chairman SHRI R. M. TELANC

Members

Representing

Garware Wall Ropes Ltd, Bombay

SRRI K. N. RAMAUHAND~AN ( Alternate to Shri R. M. Telang )

SRRI A. T. BA~AK Directorate General of Supplies & Disposals ( Inspection Wing ), New Delhi

COL A. K. BHATTACHARYA Calcutta Port Trust, Calcutta SHRI S. K. MUKHERJEE ( Alternafe )

DEPUTY CHIEF ME~RANICAL ENQINEER ( MARINE ), NOBTH

Railway Board ( Ministry of Railways )

EASTERN RAILWAY, PATNA SERI D. K. DUTTA Office of the Jute Commissioner, Calcutta SHRI G. D. GANJRHANE Neomar Limited, Vadodara SHRI T. N. GHABRU

STO/JSO ( CHEMICAL ) OF -Ministry of Defence ( DPIN )

CINS ( B ) ( Alttrnate ) SHRI A. GHOSH National Test House, Calcutta SHRI SEKJ~AR GUHA Eskaps ( India ) Private Limited, Calcutta

SHHI N. B. SEN~UPTA ( Alhrnafe ) SHRI TAHER S. M. KHANDAN M. M. Tayebally, Calicut

SHRI SHABBIR S. M. KHANDAN ( Alternate ) CAPT S. B. KU~DE~QI Shipping Corporation of India Ltd, Bombay SHXI B. MAJU~~DER

SHRI G. MITRA ( Aifrrnafr ) Export Inspection Agency, Calcutta

SHRI A. C. MATHV~ SRRI S. C. GUPTA ( Altcrnatr )

Ministry of Dcfcnce ( R&D )

SHRI R. K. t&ERA Ministry of Defence ( DGI ) SHRl S. P. CHAKRABORTY ( Alternate )

SHRI K. N. MICRA Gujarat Filaments Ltd, Vadodara SHRI G. N. PRABHU Coir Board, Ernakulam

SHRI V. AEDUL MAJE~ZD ( Altrrnatc )

( Cwtinwd on page 2 )

0 Cefiyright 1986

INDIAN STANDARDS INSTITUTION

This publication is protected under the Indian Cqyright Act ( XIV of 1957 ) and reproduction in whole or in part by any means except with written permission of the publisher shall be deemed to be an infringement of copyright under the said Act.

I8 :2452 - 1985

( Continued from pug’gc 1 )

Members

SHRI Y. K. RAMA RAO

Representing

Rail India Technical and Economic Services Ltd, New Delhi

SHRI I?. R. MALLICK ( AkfnUtc ) C~PT B. R. RAO The Scindia Steam Navigation Co Ltd, Bombay REPRXSENTATIVE The Ganges Rope Co Ltd, Howrah REPRESENTATIVE Indian Jute Industries’ Research Association,

Calcutta SHRI NIRMAL K. SOMANI Indian Rope Manufacturers’ Association, Calcutta

SHRI T. BHATTACHARYA ( Ahrnat8 ) SERI H. C. TANEJA Nav~ew~;$uarters ( Ministry of Defence ),

SHRI R. VI~RVANATH ( Alternate ) SHRI KANTILAL G. THANAWALA M. Best Cotton Rope Manufacturing Co, Bombay

SRRI MADEUKANT G. THANAWALA ( Alternate ) SERI R. I. MIDHA, Director General, IS1 ( Ex-oficio Member )

Director ( Tex )

SHRI A. R. BANERJEE Joint Director ( Tex ), IS1

2

IS : 2452 - 1985

Indian Slandard

SPECIFICATION FOR HAWSER-LAID COTTON ROPE

( Second Revision )

0. FOREWORD

0.1 This Indian Standard ( Second Revision ) was adopted by the Indian Standards Institution on 30 November 1985, after the draft finalized by the Cordage Sectional Committee had been approved by the Textile Division Council.

0.2 This standard was first revised in 1978. The present revision has been taken up in the light of the experience gained since its first revi-ion. The following major changes have been made in the present revision.

1)

2)

3)

4)

The rotproofing agents have been spelt out and their quantum of application has been specified,

Requirements for net mass of coils and turns per n;etre have been prescribed,

Method of test has been prescribed for testing length of coils, and

Sampling procedure has been modified.

0.3 Considerable assistance has been derived from IND/TC 0293 ‘Ropes, Cotton, Hawser-laid’ issued by the Controllerate of Inspection Textiles and Clothing, Kanpur, Ministry of Defence, in the preparstion of the standard.

0.4 For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calcula:cd. expt css- ing the result of a test, shall be rounded off in actor lance ~~~itl! IS : 2-1960”. The number of significant places retained in r!:e rounr.~ed off value should be the same as that of the specified value in this starr,)ard.

1. SCOPE

1.1 This standard prescribes the requirements of hawser-laid cotton rope of diametres 8, 10, 12, 14, 16 and 20 mm.

*Rules for rounding off numerical values ( revised ) .

3

IS : 2452 - 1985

2. TERMINOLOGY

2.1 For the purpose of this standard, the definitions given in IS : 3871- 1984* shall apply.

3. ATMOSPHERIC CONDITIONS FOR CONDITIONING AND TESTS

3.1 The tests shall normally be carried out under prevailing atmospheric conditions. In all cases of dispute, however, the tests shall be carried out on samples which have been conditioned for 24 hours in a standard atmosphere at 65 & 2 percent relative humidity and 27 + 2°C tempera- ture ( see IS : 6359-1971t ). Where practicable the tests should be carried out in the standard conditioning atmosphere, otherwise they should be carried out as quickly as possible but not exceeding 15 minutes of the removal of the test pieces from the conditioning atmosphere.

4. MANUFACTURE

4.1 The rope shall be of three strands ( hawser-laid ), having equal number of yarns. The yarn should be of a nominal count of 50 tex ( 12 s ). Each strand should be well formed, continuous and evenly twisted and shall be free from loose or broken yarns, snarls, loops or other defects.

4.2 The rope shall be well and evenly laid and shall be free from visible defects. The direction of twist in the finished rope shall be ‘Z’, unless otherwise specified.

4.3 The rope shall be rot-proofed with zinc nor copper naphthanate as stipulated in the contract or order. In case the rope is treated with zinc naphthanate, the zinc content shall be within 0.8 to 1.2 percent and if treated with copper naphthanate, the copper content shall be within 0.4 to O-8 percent when tested in accordance with IS : 3522 ( Part 1 )-1966x.

5. REQUIREMENTS

5.1 The physical requirements are given in Table 1.

5.2 The dyed ropes shall be fast to light, washing and rubbing when tested by-the methods given below:

a) Light - The rope shall have fastness equal to class 5 or better when tested according to IS : 2454-1967s.

*Glossary of terms relating to fibre ropesPnd cordages (jirsl revision ). TMethod for conditioning of textiles. $Method for estimation of common preservatives used in textile industry: Part 1. 3Method for determination of colour fastness of textile materials to artificial light

( xenon lamp ).

4

b)

4

IS : 2452 - -1985

Washing - The rope shall have fastnexs equal to class 4 or better when tested according to IS : 764-1979*.

Rubbing - The rope shall have fastners equal to class 4 or better when tested according to IS : 766-19567.

5.3 Length of Coils - The length of each coil of rope shall be 100 m or as agreed to between the buyer and the seller. Length of coil shall be determined by the method given in IS : 7071 ( Part 2 )-1974:.

5.4 Mass - The net mass of the coils of ropes in the lot when determined in accordance with the method given in IS : 7071 ( Part 2 )-1974: shall not differ by more than &5 percent from the mass of the coils as calculated from the linear density as given in Table 1 and length of the coils.

TABLE -1 REQUIREMENTS OF HAWSER-LAID COTTON ROPE

( Clauses 5.1 and 5.4 )

DIAWETER

(1)

mm

8 10

12

14

16

20

NUMBER ox YARNS PER STRAND

( Min )

(2)

162 44-49 36

243 35-39 54

333 29-33 75

450 25-28 100

607 22-25 140

945 18-20 220

TURNS PER LINEAR DENSITY BAEAEINQ M~TRB ktex ( g/m ) LOAD, Min

(3) (4) (5)

kN*

2.0

3.0

4.4

5.75

7.7

10.8

METHOD IS : 7071 - - IS: 7071 OF TEST ( Part 3 )-

Appendix A ( Part 2 )-

1974+ 19743

TOLER- +lmm - - f5 percent ANCE -0

* 1 kN is approximately equal to 102 kgf. +Method of physical test for ropes and cordage: Part 3 Diameter, circumference and

lay. SMethod of physical test for ropes and cordage:~Part 2 Mass, length and linear

density.

*Method for determination of colour fastness of textile materials to washing: Test 3 ( second rmism j.

tMethod for determination of colour fastness of textile materials to rubbing. fMcthod of physical test for ropes and cordage: Part 2 Mass, length and linaar

density.

5

IS : 2452 - 1985

5.5 In respect of other requirements not specified in the standard the rope shall conform to the sealed sample agreed to in the contract or order.

6. MARKING

6.1 Each coil shall be attached with a label on which the following information shall be marked:

a) Manufacturer’s name or trade-mark together with the year of manufacture,

b) Diameter ( mm ) and length ( m ) of rope,

c) Gross and net mass of coil, and

d) Year of manufacture.

6.1.1 Any other marking as agreed to between the buyer and the seller may be given.

6.1.2 Each coil may also be marked with the IS1 Certification Mark.

NOTE - The use of the ISI Certification Mark is governed by the provisions of the Indian Standards Institution ( Certification Marks ) Act and the Rules and Regulations made thereunder. The IS1 Mark on products covered by an Indian Standard conveys the assurance that they have been produced to comply with the requirements of that standard under a well-defined system of inspection, testing and quality control which is devised and supervised by IS1 and operated by the producer. IS1 marked products are also continuously checked by IS1 for conformity to that standard as a further safeguard. Details of conditions under which a licence for the use of the IS1 Certification Mark may be granted to manufacturers or processors, may be obtained from the Indian Standards Institution.

7. PACKING

7.1 Unless otherwise specified, the packing shall conform to IS: 3256-1980".

8. SAMPLING

8.1 Lot - A quantity of coils of the same linear density, same type and same dimensions, manufactured under similar conditions and delivered to a buyer against a despatch note shall constitute a lot.

8.2 The conformity of the lot shall be determined on the basis of the tests carried out on the samples selected from it.

8.3 Sa,mple Size - Sampling shall be as representative as possible of the lot subjected to the measurements and tests. Draw the samples at

*Code for inland packaging of ropes and cordages (Jirst revision ).

6

IS : 2452 - 1985

random at the rate shown by the following formula:

where S is the number of length of rope and Jv is the size of the lot expressed as a number of coils of 100 m ( or length as declared ). Where S as calculated is not a whole number, round off the value obtained to give a whole number in accordance with IS : Z-1960”. In cases where S is less than 1, draw one sample coil of 100 m length or as declared.

APPENDIX A ( i’-uble 1 )

METHOD OF TEST

A-l. BREAKING LOAD

A-l.1 For the purpose of this test, tensile testing machines of appropriate capacity with a constant-rate-of-traverse of the straining head of not less than 150 mm/min nor more than 305 mm/min shall be used.

A-l.2 With Ordinary Grips - Mount each specimen with an initial length of not less than 1 m between the grips of the testin~g~machine. Apply gradually and continuously increasing load until the specimen breaks. If fracture occurs at or near the grips at less than the specified breaking load, disregard the test and take a further test. Accept the test results corresponding to any specimen that fractures through causes attributable to grip damage as meeting the requirements of the speci- fication provided the load recorded is not less than 95 percent of the minimum specified breaking load.

A-l.3 With Bollard Grips - Small size ropes may be tested on testing machine with bollard grips. In such cases, mount the test specimen with an initial length of not less than 250 mm between the bollards of the testing machine ensuring that the rate of traverse of the straining head in mm per minute for constant-rate-of-traverse machine is as near as possible and numerically equal in mm to the length of the specimen. Apply gradually and continously increasing load until the specimen breaks. If fracture occurs at or near the grips at less than the specified breaking load, disregard the test and take a further test. Accept the test results corresponding to any specimen that fractures through causes attributable to grip damage as meeting the requirements of this specification provided the load recorded is not less than 95 percent of the minimum specified breaking load.

*Rules for rounding off numerical values ( reuised ).

7

18:2452-1985

A-l.4 With Ram Horn Gripm - Mount each specimen with an initial length of not less than 1 m between two ram horn grips fixed at moving and stationary ends of the constant-rate-of-traverse testing machine, taking care that the rope does not slip from the grips during testing. Apply gradually and continuously increasing load until the specimen breaks. Record the load indicated by the machine. If fracture occurs at or near the grips at less than the specified breaking load, disregard the test and take a further test.

A-I.5 Eye-Spliced Rope Test - Rope with the ends eye-spliced may be used for the purpose of testing the tensile strength of the rope. The diameter of testing bollards should not be less than 100 mm in diameter when testing ropes up to and including 40 mm nominal diameter and not less than 150 mm in diameter for ropes larger than 40 mm diameter. In order to obtain a true value of rope strength it is desirable that there be as great a length of rope as possible between the splices.

When tested eye-spliced, the rope shall be deemed to conform to the requirements of this specification provided the breaking load obtained from the specimen is not less than 90 percent of the specified breaking load and provided the fractures occur at the splices.