tender for addition alteration/renovation of bldg no p-137 at nda khadakwasla- 1 m&l for app based modified pre fabricated five layer 3 mm thick and weighing not less than 3.6 kg/sqm water proofing membrane reinforced with polyester non woven fabric mat with 150 gm/sqm black finished with compatible primer conforming to is 3488 @ 0.40 lit/ sqm and bonding material 85/25 bitumen 1.2 kg/sqm before laying membrane laid by torch application side overlap of 75 mm and over lap of 100 mm longitudinally, at the junction of roof and parapet wall a grove of 75mm wide and 65mm deep and shaping horizontal of groove with 1:3 with bituminous mastic joints/overlap shall be sealed with hot bitumen 85/25 and applying one coat of aluminium paint on top of the membrane (at any height ) complete all as specified and as directed. 2 m&l for providing plain cement concrete (1:2:4) type b1 using 20mm grade agg. as in coping including weathering slightly, rounded or chamfered angles and throating and necessary use and waste of form work complete all as specified and as directed. 3 dismantling structural steel work including, rafter , purlin , doors , gate but excluding framed trusses etc complete all as specified and as directed. 4 dismantling of plain or corrugated steel sheeting, any gauge, thickness, including nainital or similar pattern roof coverings complete all as specified and as directed. 5 dismantling floor or wall tiling of any description and size including cement mortar bedding (but not backing), removing rubbish off the premises complete all as specified and as directed.