SPECIAL REPAIR TO BLDG NO P-08 IN OTM-I AT LGJ MIL STN

Taking down existing roof treatment of any description such as PCC, lime concrete, mud phuska, APP membrane etc. and any numbers of layers upto any thickness from roof including scraping and roughening old by picking, sweeping clean and washing down and removing debris outside MD land complete all as specified and directed by Engineer-in-Charge.

M & L for PCC 1:2:4 type B-0 (Nominal Mix) using 12.5 mm nominal size graded crushed stone aggregate mixed with water proofing compound as levelling course of roof padding finished even and fair complete all as specified and directed by Engineer-in-Charge. Note:- Water proofing compound shall be measured and paid for separately complete all as specified and directed by Engineer-in-Charge.

Supply only Liquid water proofing compound ISI marked confirming to IS 2645 - 2003 complete all as specified and directed by Engineer-in-Charge.

Material and labour for repair of surface with GP-2 (General Purpose Grout) or repair mortar upto 15 mm thick as per site condition/ manufacturer’s instruction and including cracks shall be repaired with cement admixed with polymer as per manufacturer’s instructions complete all as specified and directed by Engineer-in-Charge. Make of material : Sika / Fosroc / Pidilite / Asian Paints / MBTCC (BASF) / I-CanNano or Techno commercial equivalent make approved by CWE in writing from make mentioned in

OVERLAY- PU BASED ELASTOMERIC LIQUIED MEMBRANE SYSTEM FOR EXPOSED ROOF : Providing and applying polyurethane liquid roof waterproofing with improved water ponding capability, elastomeric high build liquid membrane for concrete roofs for exterior wall and exposed surface with solid content not less than 80% and solar reflective index not less than 106 as per (ASTM E1980-19)/tear strength ~20 N/mm (Free film, 14 days, +30 degree C) (ASTM D624) and tensile strength >= 2 N/mm2 (ASTM D4541), elongation 350 to 400% as per ASTM D412 and crack bridging ability upto 2mm. (a) After proper surface preparation, Apply one coat of Primer for PU coating as per manufacturers specification. (b) Apply 1st coat of ShaliUrethane® BTD (white) @ 650 gm / m²(minimum) or equivalent by brush / roller while prime surface is tacky, Spread waterproofing reinforced Glass Fiber mash of 45 GSM with overlaps of 50 mm in both directions when the surface is still tacky. Allow 1st coat to dry. (c ) Apply 2nd & 3rd coat of ShaliUrethane® BTD (white) @ 650 gm / m² (minimum) or equivalent by brush/roller. Make : Fosroc/Sika/Choksey/Bostik/STP/ Asian Paints/Berger Paints Note : (i) The Minimum dry film thickness (DFT) of roof treatment shall be 1.5mm if any shortfall in thickness of above treatment the same shall be achieved by additional coat. (ii) The procurement of material and execution of the work of water proofing treatment shall be carried out by authorised applicator approved by GE. (iii) The manufacturer/authorised applicator shall give a warranty for the performance & durability for 10 years.

M & L for providing PCC 1:2:4 type B-1 (nominal mix) using 20 mm crushed stone aggregate for coving / gola along vertical parapets of size 100 mm X 100 mm with concrete including supply and mixing liquid WPC in mortar @ as per manufacturer instruction per bag of cement of 50 kg complete all as specified and directed by Engineer-in-Charge.

Demolition of brick work or stone/boulder masonry, built in cement mortar including all quoins, arches, pillars, etc. complete all as specified and directed by Engineer-in-Charge.

Material and labour for water proofing treatment to RCC sunken slab and adjoining vertical slab as described following any one method complete all as specified and directed by Engineer-in-Charge. Method 1: (A) Supplying and applying two component elastomeric acrylic polymer modified cementitious waterproofing coating, Smart Care Damp proof 2K, having 100% elongation as per ASTM D412, resisting 5 bars hydrostatic pressure as per DIN 1048, reduction to rapid chloride shall be 70 as per DIN 1048, crack bridging upto 1.2mm as per ASTM 4548.5 Clean all working surface & made free from dirt, grease laitance etc. After inspection for all working area rough surface, cracks & construction joint are treated by polymer modified mortar of 1:1:4 (1 Cement : 1 Polymer : 4 Sand). Making Gola of size 75 mm X 75 mm at junction of vertical & horizontal with the polymer modified mortar of 1:1:4 (1 Cement : 1 Polymer : 4 Sand). The mixing ratio of the coating shall be 2 parts of powder & 1 part of liquid without any water addition in the mixing and shall have consumption of 1.5 kg/sqm per coats, etc., complete as per manufactures specifications. (B) Bore Packing: All the borehole gaps between concrete surface and PVC pipe of various dia upto the neck level shall be filled with non-shrink free flow grout – Smart Care GP Grout having dual shrinkage compensation property. Before the bore packing, surface of the PVC pie and concrete surface will be made rough and sand will be sprinkled with polymer bonding agent. (C) Apply 12-15 mm plaster on slab and vertical surface admixed with Smart Care Vitalia Neo @ 200ml per bag of cement before treatment. (D) 40 mm dia HDPE pipe to be provided as spout pipe in sunken portion. Method 2: (A) Supplying and applying two component cementitious & acrylic flexible water proofing & protective coating, two coats with 1 mm DFT, having Hydrostatic (positive) water pressure resistance (DIN 1048) is 7. Abrasion resistance, cm/km is 0.09 of Dr Fixit Pidifin 2k @ 1.5kg/sqm with a paint brush over existing slab surface and adjoining vertical surface. The Polyester reinforced coated net of 45 g/sqm, 2.5 mm X 2.5 mm is laying on the surface immediately on the first coat of two component modified polymer Dr Fixit pidifin 2k. After removal of all lose materials like dust etc. with wire brush coir brushes from surface to get absolutely cleaned surface free of foreign contaminant filling of crack and patches with polymer based mortar/micro concrete, after that making the gola on surrounding wall’s junction and seal the vertical walls. In case of core cutting on the surface, the joint is seal with non-shrink grout. (B) The coating shall be terminated at 1600 mm in toilet/2100 mm in bathroom on vertical walls. (C) Apply 12-15 mm water proof plaster on slab and vertical surface admixed with Dr Fixit pidiproof LW+ @200ml per bag of cement before treatment. (D) 40 mm dia HDPE pipe to be provided as spout pipe in sunken portion. Make: Method 1 (Asian paint)/ Method 2 (Dr fixit) or Techno commercial equivalent in make mentioned in Appx ‘B’ approved by CWE Note :- (i) The treatment shall be carried out by authorised applicator (through specialized agency ) approved by CWE as per the manufacturer. (ii) PCC filling under sunken area will be measured & paid separately (iii) Treatment should be continue upto 450 mm height on vertical wall (all sides and floor) of sunken but only plan area of sunken will be measured for payment.

Material and labour for water proofing treatment to walls surfaces of toilets/baths/WC's (1600mm in toilet and 2100mm in bathroom on vertical wall surface) with following applications complete all as specified and directed by Engineer-in-Charge. by Engineer-in-Charge :- (a) Applying first coat of chemical pidifin 2K (Dr Fixit) on cleaned surfaces @ 0.86 Kg/Sqm (Minimum) and drying for 24 Hours (b) Applying second coat of chemical Pidifin 2K (Dr Fixit) @ 0.86 Kg/Sqm (minimum) over first coat Make : Dr fixit or Techno commercial equivalent

M&L 40 mm GI pipe medium grade, with all fittings and fixed to walls and ceilings and laid in floors made to shape as in spout pipe in sunken/ verandah/ Balcony complete all as specified and directed by Engineer-in-Charge.