Name of Work: R & M of false ceiling work & water proofing in control room at 220 KV GSS Mandawar
Sl. No.
Item Description
1
Providingandfixing14mmthick Acoustical withfinefissuredtiles/ Mineral fibre high density tiles with butt edgesfalse ceiling tiles of size 595x595mm intrue horizontallevelsuspendedoninterlockingmetal grid of hot dipped galvanised steel sections ( galvanized @ 170 gsm/sqm.) consisting of main “T” runner with suitably spaced joints to get required lengthandofsize 24x38mm made from 0.30mm thick (minimum)sheet spaced at 1200mm center to center and cross “T” of size 24x25mm made of0.30mmthick(minimum)sheet,1200mmlongspacedbetweenmain “T”at 600mmcentertocentertoformagridof1200x600mmand secondarycross“T” oflength600mm andsize 24x25mm made of0.30 mm thick (minimum) sheet to be interlocked at middle of the 1200x600mm panel to form grids of 600x600mm and wall angle of size 21x21x0.30 mm andlayingfalseceilingtilesofapprovedtextureinthe gridincluding, wherever,required,cutting/making,openingforserviceslikediffusers, grills, light fittings, fixtures, smoke detectors etc. Main “T” runners to be suspended from ceiling using GI slotted cleats fixed to ceiling with 6 mm dia and 50mm long dash fasteners, 4mm GI adjustable rods with galvanisedlevelclipsspaced at1200mm centertocenteralongmainT, bottom exposed width of 24mm of all T- sections shall be pre-painted with polyesterpaint,all complete at allheights asper specificationsdrawings and as directed by Engineer-in-Charge. ( The tiles should of 90 % RH avg. NCR 0.55 light reflectance> 80% thermal conductiveity K = 0.052-0.057 w/mK colourwhite.Fireperformanceclass0/classI(BS476)withwarranty against sag)
2
Providing & Fixing of IP20, 2\"x2\" LED Surface/ Recessed mounting Mid powerSMD typeLEDLightfixturenotlessthan50mm housingdepth madefromCRCAsheet steelhousing,highpurity/transmisivityUV stabilizedNon-yellowishdiffuserfor uniformlightdistribution.High efficiencywith4KVinternal/externalsurge protectionBIScertified isolateddriverhavingefficiency>85%,withShort& Opencircuit protection(Integralwithlightfixture).Systemlumenefficacyof≥ 120 lm/Watt ,THD < 10 % , p.f.≥0.95,CRI >80 , life time of minimum 50000 Burning Hours with , 70% of intial Lumen maintaned till life ends , CCT 3000°K/4000°K/ 5700°K/6000°K/6500°K(AsperANSIBin), maximum powerconsumptionshouldnotmore thanthe specifiedrating andFixture shallbeofBISstandardandtrademarkcertificate(T.C.). ManufacturesWordMark/NameEngraved/Embossing/Screenprinting onhousing.OEMmusthaveits owninhouseNABLlabsetupforall testingfacilitiesforLEDfixtures.(LM79 &LM80)certificate/Report fromOEMshallbesubmitted.Allasperpre approvedbyEngineer incharge.AllasperpreapprovedbyEngineerincharge.For additional technical parameters ofproducts/ work , refer Annexure \"A\" attached with this BSR .Minimum lumen output 3600 lm.Code-17.4.1.2
3
Providing and laying water proofing treatment on roofs of slabs by applying cement slurry mixed with water proofing cement compound consisting of applying : (i) after surface preparation, first layer of slurry of cement @ 0.488 kg/sqm mixed with water proofing cement compound @ 0.253 kg/sqm. (ii) laying second layer of Fiber glass cloth when the first layer is still green .Overlaps of joints of fiber cloth should not be less than 10 cm.(iii) Third layer of 1.5 mm thickness consisting of slurry of cement @ 1.289 kg/sqmmixed with water proffing cement compound @ 0.670 kg/sqm and coarse sand @ 1.289 kg/sqm. This will be allowed to air cure for 4 hours followed by water curing for 48 hours. The entire treatment will be taken upto 30cm on parapet wall and tucked into groove in parapet all around. (iv) fourth and final layer of brick tiling ‘with cement mortar or any other approved protective coarse. (which will be paid for separately) For the purpose of measurement the entire treated surface will be measured.
4
Removingaluminium/Gypsumpartitions,doors,windows,fixedglazing and false ceiling including disposal of unserviceable material and stacking of serviceable material within 50 meters leadas directedby Engineer-in-charge.
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