Replacing the A.C Sheet by providing Galvalume sheet roofing in Godown C in TNCSC Godown campus at Thiruvanmiyur in Chennai City

Amount

CIVIL WORK

Dismantling A.C.Sheet roofing without roof timbers and clearing away and carefully stacking materials useful for reuse as directed by the departmental officers.

Dismantling brick / stone masonry in cement mortar walls under 3M height and clearing away and carefully stacking materials useful for re-use for any thickness of wall as directed by departmental officers.

Providing and laying in position, Standardised Concrete Mix M20 Grade in accordance with IS:456-200 using 20mm and down graded hard broken granite stone jelly for all RCC items of works with minimum cement content of 325 kg/M3 and mazimum water cement ratio of 0.55, including admixture (Plasticiser / super plasticiser) in recommended proportions as per IS:9103 to accelerate, retard setting of concrete, improvement workability without impairing strength and durability with about (5 Cu.m) 7730 Kg of 20mm machine crushed stone jelly and with about (3.3 Cum)5156 kg of 0-12mm machine crushed stone jelly and with about (4.7 Cum) 7670 kg of sand, but excluding cost of reinforcement gril and fabricating charges, centering and shuttering and also including laying, vibrating with mechanical vibrators, finishing, cutting etc., and Providing fixtures like fan clams in the RCC floor/ roof slabs wherever necessary without claiming extra etc., complete complying with standard specification and as directed the departmental officers. The coarse and five aggregates to be used should comply with the requirements of 15 Standards. (No separate payment will be made by the Department for the excess usage of materials. In Ground floor upto 4.50M height above basement.

Supplying, fabricating and placing in position MS/RTS grills for reinforcement for all R.C.C. works including cost of steel, labour for straightening, bending, cranking, tying grills with 18 gauge galvanized binding wire and placing grills in position complete complying with standard specification and as directed..

Providing FORM WORK for centering the soffits of all reinforcement concrete work including strutting to the required (3 metre) height with mild-steel sheets of size 90cmx60cm 10 gauge stiffened with welded mild steel angles of size 25mmx25mmx3mm laid with country wood joist of average of size 10cmx6.50cm at about 90cm centres with casurina props of 13cm dia at 75cm centre to centre with all nails coir,wedges complete and removing the form work after necessary curing period as directed by the corporations officers. The rates should inclusives of cutting , bending, welding , charges of M.S sheets, M.S. angles etc., Complete Binder wall.

BRICK WORK in cement mortor 1:5(one cement, five sand) using best quality Country bricks of size 8 3/4"x 4¼” x 2¾” for walls including cost of scaffolding curing, finishing etc., complete complying with standard specification and as directed by the departmental officers. In Ground floor upto 4.50M height above basement.

PLASTERING with cement mortor 1:5 (one cement and five sand) 12mm thick including cost of scaffolding, finishing, curing etc., complete complying with standard specification and as directed by the departmental officers.

Painting the walls with two coats ready mixed exterior emulsion paint of first class approved quality and colour over a priming coat including thorough scrapping, clean removal of dirt, and including necessary plaster of paris putty, wherever required etc., complete complying with standard specification and as directed by the departmental officers.

Supplying , fabricating, hoisting and erection of MS angle TRUSSES & PURLIN including drilling holes and painting the purlins with two coats of anticorrosive paint of approved colour over one coat of red oxide primer etc., complete complying with standard specification and as directed by the departmental officers.

Supplying and laying of High profile colour galvalume sheet (as per ISI Standard) with combination 55A1:43 4Zn:1:6SI of TCT bent type 0.47mm thick not less than 150 GSM and standard width of 1.06m with yield strength of 550 MPA made from high tensile/ CR sheets of approved quality for roofing with necessary fixing arrangements like 65m and long hexagonal head screws with EPDM rubber seal etc., complete, complying with standard specification and as directed by the departmental officer. (Test certificate for quality should be furnished on receipt of material at site)

Supplying and roofing with Galvalume sheet ridge pieces of size 1.00M x 0.7M, 0.47mm thick with necessary U or J bolt and nuts G.I washers etc., complete For the above works skilled man power, necessary tools, equipments, power supply, water supply including transport, any other statuary approval required for the transporting the materials shall be duly obtained by the contractor. (Test certificate for quality should be furnished on receipt of material at site)

Supplying and fixing of 40 X 6mm G.I Flat over the galvalume sheet roofing which is placed on the top of Purlin in the longitudinal direction to avoid the lifting of roofing during heavy wind. The rate is inclusive of GI screws 75mm length with rubber and aluminium washer, drilling hole over GI Flat to hold the sheet and purlin with necessary adhesive flashing tap directly over the galvalume sheet including labour charges for fixing, conveyance, loading, unloading and cutting etc. complete as directed by the departmental officers.

Supplying and fixing corrugated Poly Carbonate sheet of size 3mx1.06m of 3mm thick on the roof in-between the colour coated Galvalume sheets for proper lighting with necessary G.I screws and EPDM rubber washers, including cost of loading, unloading and transportion charges etc., Complying with standard specification and as directed by the departmental officers.

Supplying and fixing of Rotary ventilator of size 600x600mm with all purlins on the roof with necessary Bolt and nuts arrangements to with stand the wind velocity as specified by the departmental officers.

R ravi (BID ID -1510626)

M SELVAM (BID ID -1510629)