IMPROVEMENT TO CERTAIN SMQs BUILDINGS AT GE (AF) MC CHANDIGARH

EXCAVATION AND EARTH WORK Surface excavation not exceeding 30cm deep and averaging 15 cm deep and getting out in soft/loose soil complete all as specified and as directed.

Material and labour 25 mm sand cushioning for interlocking tiles including well rammed and consolidation complete all as specified and as directed.

Removal of bushes, grass including roots, earth, mud and debris over roof top of building material from roof top surface and cleaning the effected surface neatly and disposal of rubbish out of the premises/ MD land including cleaning of spouts/ rain water pipe ( at two/three storey building) complete all as specified and as directed. Note: Surface area of roof slab for the affected area shall be measured.

Grubbing up tree trunk upto root girth exc. 5 cm & not exc. 30 cm including cutting of trunk portion protruding over wall surface/roof surface/terrace of building height up to 10.0 mtr. The rate also Include necessary scaffolding and necessary safety measure if required and making good the surface in cement mortar (1:3) and applying one coat of anti growth of vegetation chemical as per manufacturer's instruction and removal of unserviceable material out side MD land and cleaning site complete all as specified and directed

CONCRETE WORK Material and labour lean concrete type E-2 (1:5:10) using 40mm grade stone aggregate as in sunken portion complete all as specified and directed

Material and labour plain cement concrete (1:2:4) type B-0 using 12.5 mm graded stone aggregate as in padding on roof laid in required slope, complete all as specified and directed

Material and labour plain cement concrete B-0 type (1:2:4) using 12.5 mm graded crushed stone aggregate as in copings, bed plates, benching and the like finished fair & even, including necessary form work complete all as specified and directed. NOTES :- (i) PCC shall be laid in slope and thickness shall be average (minimum average thickness 25 mm or as per site requirement for maintaining the slope to drain out rain water as directed. (ii) No hand mixing shall be allowed, mixing shall be done at ground floor and mixed materials deposited on roof by manually/mechanically to achieve the proper strength and workmanship.

Material and labour for PCC (1:4:8) type D-2 (40mm graded stone aggregate) as in foundation, filling and mass concrete complete all as specified and directed

Material and labour for Reinforced cement concrete (Nominal mix) 1:2:4 type B1 (using 20mm graded crushed stone aggregate) as in chajjas, facia etc shelves and the like, at any height, complete all as specified and directed

Material and labour for providing water proofing treatment of sunken portion of WCs, bathroom etc. by applying cement slurry mixed with Acrylic based polymer modified cementitious composite compound coating of make as approval in Technical Instruction 5/2003 by adding: (a) 15mm thick plaster (1:4) cement sand mortar with integral water proofing compound 2% by weight of cement on floor and wall / beam , finishing the surface even and smooth without using extra cement. The surface shall then be cured and allowed to dry. Note: Water proofing compound shall be measured and paid separately. (b) First layer of slurry of cement @0.5 kg/sqm mixed with Acrylic based polymer modified cementitious composite compound @ 0.25 kg/sqm. This layer will be allowed to air cure for 4 hrs. (c) Second layer of slurry of cement @0.25 kg/sqm mixed with Acrylic based polymer modified cementitious composite compound @ 0.15 kg/sqm. This layer will be allowed to air cure for 4 hrs followed with water curing for 48 hrs. complete all as specified and directed by Engineer-in-charge. (d) Ponding test to be carried out for minimum 24 hrs before filling of sunken slab.