Maintenance and Repairs to Kalavai Periyasamy Street Elementary School in Ward No 87,South Zone,Coimbatore Corporation.

Amount

Dismantling the exisiting old Pressed Tiles and weathering Course etc complete as per the direction of departmental officer

Providing Weathering course at average 75 mm with thick 20mm brick jelly mixed with pure slaked lime uniform slope and as with wooden mallets to form a uniform slope and rough finish including laying with 20mm brick well burnt approved qualites and make measuring tiles of size 230mmx230mm in CM 1:3 mixed with crude oil in the ratio on litre to 1 bag cement and printing tiles with same morter and finished neatly

Finishing the top of roof with one course of PRESSED TILES of size 23 cm X 23 cm of approved quality laid in cement mortar 1:3 (One cement and three sand) 12mm thick mixed with water proofing compound conforming to I.S. at 2% by weight of cement used and the top pointed with same mortar mixed with red oxide to the full depth of tiles, complete complying with standard specification and as directed by the departmental officers.

Chipping of concrete and roughening the surface etc complete as per the direction of departmental officer

Brick or stone in cement mortar walls under 3 mtr height etc complete as per the direction of departmental officer

Supply and fixing of mild Structural Steel Grill Sections,M.S.Flat with necessary fixture arrangments including cost and conveyance etc., etc complete as per the direction of departmental officer

Plastering the exposed surface of RCC works in cement mortar 1:3 mix 10mm thick etc., completed.

Painting with cement paint top two coats over old Plaster Surface including clean and watering etc., complete etc., completed.

Painting the new iron works,in all floors, two coats over one coat of primer coat for door ,windows,grills,weldmesh ets.

Painting over old iron work for doors, windows, grills,weldmesh, screen etc., two coats

ORDINARY SOIL (SS20B) Earth work excavating and depositing on bank with initial lead of 10m & initial lift of 2m in Sand, silt or other loose soil, wet sand or silt notunder water, light black cotton soil, sandy loam and ordinary soil including excavated earth (SS20B)

Plain Cement Concrete 1:4:8 (one cement four fine aggregates and eight coarse aggregates) using 40mm size ISS HBG metal including cost and conveyance of all materials to site and including for the mixing, laying and labour charges and all incidential charges such as water providing etc., complete as per standard specification

Plain Cement Concrete 1:2:4 (one cement, two fine aggregates and four coarse aggregates) using 20mm size ISS HBG metal including cost and conveyance of all materials to site and including for the mixing, laying and labour charges etc., complete as per standard specification

Wiring with 2 x 1.5 sq.mm. (22 / 0.3) PVC insulated SC unsheathed copper conductor of 1100V grade in suitable PVC rigid pipe on wall and ceiling with PVC accessories and with TW switch box and 5A FT switch with painting of suitable colour for open PVC light point / fan point (for electronic regulator) (5 points per coil)

Wiring with 2 x 1.5 sq.mm (22 / 0.3) PVC insulated SC unsheathed copper conductor of 1100V grade in suitable PVC rigid pipe on wall and ceiling with PVC accessories with 150 x 100 x 113mm TW switch box for 5A 3 pin non inter locking Wall socket with 5A flush type switch with painting of suitable colour with continuous earth wire connection of 14 SWG TC wire for open PVC plug point

Supply and fixing of single box type 4'36W fluorescent fitting complete with electronic ballast with TW round blocks on wall or ceiling with flu tube with PVC unsheathed Copper leads from terminals to the fitting

Supply and fixing of 1200mm (48") sweep AC ceiling fan complete with stepped electronic 300W regulator with 1 metre down rod with fan clamp with side plates and cross arm of size 450mm (18")

Supply and fixing of 4'40W twin street light fluorescent fitting complete with copper choke and condensor with 32mm dia GI pipe (Class 'B') with 1 No. 32mm GI bend complete on the existing post wall with 16A aerial fuse unit on MS plate with PVC unsheathed copper leads MS clamps and aluminium painting with fluorescent tubes

Supplying and fixing of SS Sink of size 1200 x 550 x 180mm including all cost etc complete as per the direction departmental officer

Old Terrace Screed Repair with UV Resistant Hybrid PU Waterproof coating above 500 Sq.m - Providing and Applying high strength, hybrid polyurethane Waterproofing coating which is two component, cold applied, water based acrylic and UV resistant water proofing treatment to the Existing Roof screed surface applied @ 1.6 L/m2 in 3 coats to achieve 1mm DFT, having tensile strength with 45 gsm glass fibre mesh 10N/mm2 , Elongation ≥ 200%, confirming to ASTM D 2370; Abrasion resistance 15mg confirming to ASTM D 4060 and Crack bridging ability up to 3 mm,including surface preparation, ensure surface in SSD condition for first coat and spreading 45 gsm glass fibre mesh of 2.5 mm x 2.5 mm sandwiched between the first and second coat completely as per specification.The finished cost to include surface preparation, making coving at Junction, treatment of cracks completely as per specification.

Add :- GST @ 18%

C BALASUBRAMANIAN (BID ID -1154105)