GE/CHM-105/2026-2027 REPAIR TO CHAJJA, PARAPET AND ROOF TREATMNENT IN OTM ACCN UNDER AGE B/R-I AT CHANDIMANDIR

Demolition of brick tiles or terracing tiles, pointed in cement mortar alongwith cement screed or plaster and removing rubbish etc outside the MOD land complete all as specified and as directed by Engineer-in-Charge.

Demolition of Mud in roofs, any thickness, including plastering and leeping (whether full thickness removed or only a part thereof) complete all as specified and as directed by Engr-in-Charge.

Demolition of un-reinforced cement concrete any description and in any position including sunken portion, roof padding etc not other wise specially provided for and debris so obtained disposing off outside MoD land,complete all as specified and directed.

50 mm thick (average thickness) PCC 1:2:4, type B-0 (using 12.5 mm graded stone aggregates) as in levelling course, sub base and roof padding, including mixed with WPC complete all as specified and as directed by Engineer-in-Charge. Note : WPC shall be measured and paid for separately.

Rendering 10mm thick rendering in CM 1:4 plaster mixed with water proofing compoound on roof surfaces including junction of parapets etc., and adjoin vertical surface and applying bituminous primer @ 0.40 ltrs per square meter including APP based polymeric membrane minimum weighing 3 kg/sqm and minimum 3 mm thick reinforced with polyester non woven fabric (weight not less than 150 gm/sqm) laid on primed surface by torch application & preparation of surface complete all over as specified and directed. Note: WPC shall be measured and paid for separately

Cutting grooves in brick wall, 75mm wide and 65mm deep and shaping horizontal fae of groove with cement mortar 1:3 complete all as specified and directed.

Preparation of surface of APP membrane of any description, over 10cm in width or girth, not otherwise described and applying two coats of Aluminium paints complete all as specified and directed.

10-12mm thick multiwall polycarbonate, UV-resistant, light weight, translucent sheet for fixing over Dome including all necessary fittings and fixtures required for fixing complete all as specified and directed. NOTE : (i) Errection of mild steel scaffolding, trestles, ladder, cradles etc necessary for execution of work. (ii) All necessary fittings and fixtures required for fixing of polycarbonate sheet over dome.

Heat Resistant Terrace Tiles (300 mm x 300 mm x 20 mm) with SRI (solar refractive index) > 78, solar reflection > 0.70 and initial emittance > 0.75 on water proof and sloped surface of terrace, laid on 20 mm thick cement sand mortar in the ratio of 1:4 (1 cement : 4 coarse sand) and grouting the joints with mix of white cement & marble powder in ratio of 1:1, including rubbing and polishing of the surface upto 3 cuts complete, including providing skirting upto 150 mm height along the parapet walls in the same manner, complete all as specified and as directed by Engr-in-Charge.

Dismantling of 500 ltrs rotational moulded polythene water storage tanks and settinhg aside as directerd and refixing of same after to carrying out the roof treatment work and also insl cleaning and removing all scale, silt , mud or dirt etc of water tank and including removing and refixing of ball brass valves, complete all as specified and directed.