Public Works Department Tender

Dismantling steelwork in built up sections in angles, tees, flats and channels including all gusset plates bolts, nuts, cutting dismembering and staking within 50 mts. lead

Extra for dismantling trusses, rafters, purlins etc. of steel work, for every additional span of one meter or part thereof beyond 10 mts.

Dismantling cement asbestos celotex or other ceiling or partition hard broad wall including stacking of serviceable materials and disposal of unserviceable materials within 50 mts. lead.

Providing & Fixing in position Double Skin roof with Zincalume/ Galvalume colour coated & bare profile sheet with subtle square fluting factory cut at all heights for roof, side & Gable cladding complete in all respect. TOP SHEET-The end rib shall be designed for anti-capillary action. The feed material should be manufactured out of nominal 0.45 mm Base Metal Thickness (BMT), Hi-strength steel with min. 550 MPa yield strength, metallic hot dip coated with Aluminium-Zinc alloy (55% Aluminium, 43.5% Zinc &1.5% Si) as per AS 1397 - Zincalume AZ150 (Min. 150 gms/sq.mt total on both sides) with quality paint coat as per AS/NZS 2728 type 3-4. The paint shall have a total coating thickness of nominal 35 μm, comprising of nominal 20 μm exterior SMP coat on top surface and nominal 5 μm reverse backer coat on back surface over nominal 5 μm primer coat on both surfaces of approved colour shade. Total Coated Thickness (TCT) should be 0.50mm. Total Painted Thickness (TPT) should be in addition to 0.50mm. The steel sheet shall be fastened with nominal 40 μm zinc coated or nominal 25 μm zinc-tin alloy coated, Hex head, self-drilling screw as per AS 3566-2002 Class 3 fasteners of approved make with EPDM washer as per the requirement considering the profile shape and design load. The fastener size shall be calculated as per the design or manufacturers recommendations.

Providing & fixing in position Galvalume/Zincalume flashings, cappings, ridges, gutters upto 600mm/610mm girth and min 3.00m in length (cold Rolled Steel 550 MPa yeild Stress ASTM A 446 Grade E) with hot-dip metallic coating of aluminium-zinc alloy(AZ 150 galvalume) (150 gms/sqm total of both sides with Al-Zn Composition= 55% & 43.5% resp. & 1.5% Si conforming to ASTM 792/ AS 1397) 0.45 mm base metal thickness and 0.50mm total coated thickness, factory cut at all heights for roof, side & gable cladding complete in all respects with AZ 150 GSM SMP color Coated (20mic exterior coat of Silicon Modified Polyester paint system over 5 mic primer and 5 mic polyester back coat over 5 mic primer) incl. fixing to purlins with no 12x14x55mm mechanically galvanised hex head self drilling screws of the best quality as per AS-3566 class 3-4 approved, which should be compatible to be used with sheets. with integral washers and EPDM seals etc. Silicon sealant non-hardening neutral cure type shall be applied at all end laps, complete as directed.

Steel work welded (SAIL, TATA. VIZAG & using electrodes of Ador or ES4B or Deh Secheron make only)in built up sections trusses and framed work including cutting, hoisting, fixing in position and applying priming coat of red lead paint.

b) In tees, angles, flats and channels

Centering & shuttering including Strutting, Propping & removal of forms for :

iv) Sides and Soffits of beams, Beam Haunchings, Cantilever, Girders, Bressumers and Lintels plinth beams not exceeding 1m in depth

Providing and laying in position (1:11/2:3) Reinforced cement conrete excluding the cost of centering, shuttering, finishing and reinfrocement (1 cement: 1½ coarse sand:3 graded stone agg 20mm nominal size)

c) In beams, suspended floors, roofs having slope upto 15° landings, balconies, shelves, chajjas, lintels, bands, plain window sills, staircases upto floor five level

Providing TMT steel reinforcement bars of (SAIL, TATA. VIZAG, JSW Steel Ltd.) ) (Confirming to IS 1786 of 1986) for RCC work (conforming to I.S. 1786 of 1986) including bending, binding & placing in position in all the floors along with the factory made precast concrete cover blocks of specified sizes whose compressive strength is not less than that of surrounding concrete in the structural member.

12mm cement plaster 1:4 (1 cement : 4 fine sand)

18mm cement plaster in two coats under layer 12mm thick cement plaster 1:5 ( 1 cement : 5 coarse sand) and top layer 6mm thick with cement plaster 1: 3 (1 cement : 3 coarse sand) finished with sponge.

Painting two or more coats (excluding priming coat) with superior quality ready mixed paint for steel work of approved brand & manufacture in all shades on new work to give an even shade.