sarc wit ater fetes (2%) pee (tren nee ne art et igen Anne ep irnetocalren afew arse aH smmem sat a Date- 23] orfoes- sem isoin Bharat Cokin To All Arca Civil ngincers/Unit Heads All Area of BCCL nai waterproofing options teins ates ; a higher autor for farther implementation under CCL Dear Sir, {sto inform you that in the 4O4h FDs Meeti y ng of 2024, held on 24 & 25.10.2024, it was resolved to discon the ne of tat-felting and-APP membrane technology for roof 1h tag: Noted ihe pmmittee propased adopting a new approach involving a P Cement Conerete) & chem ‘miature enhanced with epoxy. eee Following this decision, a committee was formall t a commitee vas formally established under letter reference 0 BCCLIGM(C)CED/Commitlec/2024-25/1173 to discuss and finalize the appropriate materials and rate As recomntended by Committee and approved by competent authority are as follows:- 1. The details of proposed chemistry/ water proofing methodology ie Polyuthrene membrane ind rate is tabulated under Table “A”. (Rate can be revised subject to change in labor and ‘material rate.) Table “A Providing Waterproofing Treatment of Terrace - Polyuthrene membrane Description Details of cost for 1.00 sqm ‘Surface Preparation: Minor cleaning work, removal of Toose concrete end filling ‘cracks with polymer modified mortar using SBR. Making of angle fillets all round the periphery of the wall with polyiner modified mortar using SRP. Supplying and applying Single component, UV resistant, Zeso VOC, Single component Polyurethane Dispersion membrane fee from bitumen anda hy "96 comPrncturer. oF his approved applicator, Polyuthrene membrane with aaeaet tensile of 235-4 MPA. as per ASTM D 2370, with =400 %% Tlomgation As Per ASTM D 2370, 6.5 mm Crack Bridging 40 Do" ‘ASNZ-| 695 | SOM sere! Soon N Puncture Resistance as per ASTM FAS! The syle Saas ac applying the waterproofing treatment @ 18 ke Isaam The syne rb id surface with application (@200-250 includes final base preparation, on prime tia/ag.m. The coating is to be continued to a minim ‘of 300mm from slab, Brssamuhe vertical surface. Actual area tated will be te mode of deve eh eat as follows: (1) st oat S00 Grw/ Con 2) =nd Cos eas) SM Geatexte, (Ae coat 5 Gem / Co w= [Tora | “hd 1 To water Ces “385 TOTAL ass “Add 15 % for contractor's ‘profit and ‘overheads & 2 cathe 307.20 Rae [Unt [Ory | Toul 1 695 we Rae £0326.2236000, ARTE; www bool in ‘CIN-O1O1sH1972G01600918 edited ZA, NATE, wT 826005, ST, rater errr; TN Ye, TANT TBCCL Township, Dhanbad, arbhand-826005, Ind, eateved Office: Koyle Bhawan, Koyla Naat GB scanned with OKEN ScantTea ts ate Rice ) moments) ) Bharat Coking Cost 'ms (ie grouting the gap around the rain water pipe isting roots ns deemed fitite requirements, also be applicd at Area leveV/Execution level to ensure hip for better results, 3, Additional terms and conditions sh proper monitoring and good work, a ‘The committee has also suggested that, the chen monitoring during executions an conditions are to be incorporated mnical based waterproofing methodology requires proper igh level of workin sure this, following terms. and tip, to en: na anship , is, i ; 1. Ten years (10 yrs.) Warranty certificate should be issued by manufacturer itself or through tripartite agreewient with manufactures, - Applicator must submit the authorized applicator certificate from the manufactures 3, Additional ‘T&C as deemed fit as per prevailing site conditions/as per EIC. This issues with approval of competent authority. a CED, BCCL Director ( Personnel)’ Director (Financey CVO, Koyla Bhawan, BCCL TS to CMD, Koyla Bhawan, BCCL I 3 II Areas, BCCL 3. General Managers, All Areas, BC a 4 General Manager (Vigilance)/ GM (P&P)/ GM(Fin) Ue / CMS-CHD, BCCL- Bs HOD (C&B)/ HOD (Fin), Pay Section’ AF 10 GM (Civil) 6. All Executive, CED HQ, BCCL TT 2, HME: wwwbclvchin Steet a ‘Drafbad alban #26005, la, CIN-UIO1OLSH1972G010009 18, -egisered Office: Koyla Dhawan, Koyla Nagar, BCCL Tow"