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The cubical contents shall be calculated incubic decimetre nearest to two plaeces ofdecimal.8.5.11.2 The marble work ,in arches anddomes shall be measured as for plain work,but extra shall be allowed for such workover the rate for plain work.8.5.11.3 Sunk or moulded work in marbleshall be meas.ured by volume as per plaip.marble work or work in arches or domesas the case may be on the basis of circum-scribed rectangular block of the finishedwork but extra shall be paid for such workover the rate for plain work for work inarches and domes. For the purpose of extrapayment, volume of every stone sunk ormoulded shaU be considered.8.5.12. Rate:The rate includes the cost of materials andlabour required for all the operations described above.8.5.13. Use of finished marble slabs andtiles:In case such finished tiles are used, theseshall be measured and paid for separately.8.6.0 WALL LININGIVENEER WORKUnless and otherwise specified in thenomenclature of the item, the marble slabsused for wall lining/veneer work shall conform to dimensions giv~n in table above.8.6.1 Dressing:Dressing shall be same as specified in 8.5.1except that the back shall not be dressed,but left rought cut, in. order to ensure agood grip with the hearting of backing. Thedressed slabs shall be of the. thickness asspecified with a tolerance pennissibleun.der para 8.2 above. The tolerance in walllining when straight edge of 3m length isplaced ~should not be more than 2mm.

8.6.2 Laying:. The stone shall be wetted qefore laying.They: shall then be fixed with mortar inposition without the use of chips or underpinning of any sort. Care shall be taken tomatch the grah 1S of veneer work as directedby the EngiI1ecr-in-Charge. For purpose ofmatching the grains, the marble slabs shallbe selected judiciously having uniformpattern of veins/streaks. Preferably the slabsshall be those got out of the same blockfrom th~.quarry.~The area to be venee~edshall toe reproduced on t..l-}eround and themarble slabs laid in position and arrangedin the manner to give the desired matchirig of gr?ins. Any adjustment needed forachieving the best results shall, be thencarried out by replacing orh,terchanging theparticular slabs. Special care shall be take~to achieve the continuity of grains betweenthe two slabs one above the other along, the,horizontal joints. This .shall then be gotalong the hOI1zontal joints. This shall thenbe got approved by the Engineer-in-Chargeand each marble slabe numbered properl~and the same number shall, be marked ona separate drm;ving as well as on the surface to be actually yeneered, so as to ensurethe fixing of, the particular slabs in thecorrect location.For the facing of the columns also the sameprocedure as mentioned above shall befollowed.

8.6.2.1 Where so desired, the adjoiningstones shall be secured .to each other bymeans of copper pins 7 mm long and 6mmdiameter or as spe~~fied.8.6.2.2 Futher the stones shall be .securedto the backing by m~ans,of cramps. Thematerial for cramps shall have high resis-tanceto corosion Underconditions of dampness and against the chemical action ofmortar or concrete in which cramps areusually embedded.

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Cramps shall be of 25 x 6mm and 30 emlong in case of backing of stone masonrywalls and brick masonry walls thicker tha..'1230mm. In case of backing whh brickmasonry walls 230rom. or less thick or RCCmembers cramps shall be of 25 x 6 mmand length as per requirement .made out ofgun metal or any other metal specified inpara 8.6.2.6. Generally the outer length ofcramp in half brick '.york backing shall be115 mm and in om~brick work backing itshall be 150mm. Typical shape detailsof cramps for such backing are a.s indicatedin figure No 2 for general glli~ance.TrJscan be moditied as directed by the Engineer-in-Charge if so, required at side.Cramps shall be spaced not more 60cmapart horizontally.Alternatively tbe stone may be secured tothe backing by mearis of stone dowels 10x 5 x 2.5 em a~ per shape indicated in Fig.18.6.2.3 The adjoining stol)eS shaD bc sc.cured to each .other by means of gun metalcram ps or copper pins of the specifIed size.Cramps may be attached to its sides (seefig. 3A, 3.8) or top and bottom (See fig.3C,D,E,F) or sides, top and bottom (see fig. '3G, 3H). The general arrangement of crampsrequired for fixing facing unit to the wallare illustrated in fig.3. The actual numberof cramps and their sections, however, shallbe as per requirements of design to carrythe loads.,8.6.2.4. 'Where cramps are used to hold .theunit in position only, the facL'1gs shall beprovided with a continuous support onwhich the stones rest at Lhe ground lev_eland other storey levels, t.~e SUPP01t beingin t.'1eform of projection from or recess intothe concrete floor slab, or a l?eam betweenthe columns or a metal angle attached tothe floor slab or hearns. These ~upports shallpreferably be at vertical intervals not morethan 35m apart and also over the heads ofall openings. Such supports shaIl also .beprovided where there is transition from thinfacings below to thick facings' above.

8.6.2.~ Alternatively cra..rnps may be usedto hold the units in position and in addition to support the units thus transfe TfLTigL'1e weight of the units to the backing .. Suchcramps should be properly designed as perIS4101(Pt. I) - 1967.

'. 8.6.2.6 The cramps may be of copper alloyed with zinc, tin, nickel, lead orsta.i.nless steel.

,8.6.2.1 The pins, cramps and dowels shallbe laid in cement mortar 1:2 (1 c~ment :2 fine slli'1.d) and their samples got approvedby the Engineer inCharge and kept at site.8.6.3. Joints: ~pJ1 joints shall be full of mortar. Specialcare shall be taken to see ,that groundingsfor veneer work are' fun of mortar. If anyhoHow groundings are detected by tappingthe face stones, these shall c-etaken out andrelaid. TIle tbickness of the face joints shaHbe uniform, straight a.nd as fine as possible,not more than 1.5mm. and in h1.e face joint,the top 6mm depth~Js:han be fined withmortar specified for'the pointing.8.6.4 Mortar.:TIle mortar used for jointing slabs shaH beas specified.8.6.5 Curing, .Finishing, Protection andScaffolding:It shall be asspecitied under 8.5.6 and8.5.9.

T;''1e length and breadth shall be measuredcorrect to a em. In case of radially dressedor circular slabs used in Li.e work, the dimensions of the cir.lcumscribing rcct2nglesof the dressed stone used in the wod;;:, shanbe measured paid for .. TIJ,e area shan becalculated in sqm nearest t6 two lJIaccsofdecimal.

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Marble work in lining upto 4 em thicknessshall be paid by area under veneer workand lining of greater thickness paid by volume under plain marble work.8.6.7 Rate:The rate includes the cost of materials andlabour required for all the operations d~scribed above except for the cost of providing and fixing