Providing Vehicle Parking Shed arrangements for the Work of Grand Library and Intellectual Center at Trichy In Tiruchirapalli District.

Earth work excavation for foundation by manual means for Isolated, Combined and Other type foundations in all soils and sub-soils and to full depth as may be directed except in rock requiring blasting inclusive of shoring shuttering, bailing out water wherever necessary and depositing the surplus earth within the compound in places shown by the departmental officers with an initial lead of 10 mts and initial lift of 2.00mts. and clearing and levelling the site, etc., complete complying with standard specification and as directed by the departmental officers.

Supplying and filling in foundation, basement, etc with filling crushed stone sand in layers of not more than 15 cm thick well watered, rammed and consolidated etc. complete complying with standard specification and as directed by the departmental officers.

Cement Concrete 1:5:10 (One Cement, Five crushed stone sand and Ten hard broken stone jelly) using 40 mm gauge hard broken granite stone jelly for foundation including dewatering wherever necessary and laid in layers of not more than 15 cm thick well rammed, consolidated and including curing etc. complete complying with standard specification and as directed by the departmental officers. -Mixing by manual means

Supplying and erecting steel centering including necessary supports for plane surfaces for Reinforced Cement Concrete works such as column footings, column pedestals, plinth beams, grade beams, staircase steps, Sill slabs etc. which require only nominal strutting using mild steel sheets of size 90cm x 60cm and 10 BG stiffened with welded mild steel angles of size 25mm x 25mm x 3 mm for boarding, laid with silver oak joists of size 10cm x 5cm & 7.5cm x 5cm as support runner , vertical stiffener, side support and Top Horizontal stiffener spaced at about 60cm to 90cm centre to centre or at suitable intervals etc. complete in all floors complying with standard specifcation. (Payment for centering shall be given after the concrete is laid).

Supplying and erecting steel centering including necessary supports For plane surfaces such as rectangular or square RCC columns etc. which require only nominal strutting using mild steel sheets made of 10 gauge thick welded with MS angle size 40mm x 40mm x 5 mm and supported by Steel Adjustable Telescopic Props of Size 2m x 2m (expandable upto 3.60m) made with outer steel pipe with dia 50mm (3.60mm thick) and inner steel pipe with dia 40mm (2.90mm thick).etc..complete in all floors complying with standard specifcation. Steel Adjustable telescopic props shall be rovided as directed by the departmental Officers. (Payment for centering shall be given after the concrete is laid).

Providing and laying in position, standardised concrete Mix M-20 Grade by insitu machine mix concrete adopting weighing batch method in accordance with IS 456 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 maximum water cement ratio of 0.55, including admixture (plasticiser / super plasticiser) in recommended proportions as per IS:9103 to accelerate, retard setting of concrete, improve workability without inspiring strength and durability with about (5 Cu.m) 7730 kg. of 20mm machine crushed stone jelly and with about (3.3 Cu.m) 5156 kg. of 10-12mm machine crushed stone jelly and with about (4.79 cu.m) 7670 kg. of crushed stone sand, but excluding cost ofreinforcement grill and fabricating charges, centering and shuttering and also including laying,vibrating with mechanical vibrators, finishing, curing, etc. and providing fixtures like fan clamps in the RCC floor/ roof slabs wherever necessary without claiming extra, etc.,complete complying with standard specification and as directed by the departmental officers. The coarse and fine aggregates to be used should comply with the requirements of IS standards. (No separate payment will be made by the Department for the excess usage of materials). In Foundation and Basement

Supplying, fabricating and placing in position Mild Steel / Ribbed Tor Steel reinforcement grills of all variety like HYSD/CTD/TMTand all grade like Fe 500, Fe550D, Fe 500 D etc., for all RCC works as per design given including cost of steel reinforcement and G.I. binding wire, wastage etc. complete complying with standard specification and as directed by the departmental officers.(Contractor has to make his own arrangements for the supply of steel reinforcement and binding wire)

Supply, fabrication of ISMB steel girder of all section for roof beams & Columns complete complying with standard specification and as directed by the departmental officers.

Supply of Bolt - M16 x 75 Gr 8.8 complete complying with standard specification and as directed by the departmental officers.

Supplying of Nut - M16 Hex Gr 8.8 complete complying with standard specification and as directed by the departmental officers.

Labour for fixing Iron works for trusess & record racks etc., complete complying with standard specification and as directed by the departmental officers.

Painting new iron works such as steel doors, windows, ventilators, window bars, balustrades etc., with two coats of best approved first quality and colour of synthetic enamel paint over the existing red oxide priming coat in all floors excluding cost of priming coat etc., complete complying with standard specification and as directed by the departmental officers. (The make, quality and colour of paint should be got approved by the Executive Engineer before use on works.)

Providing and fixing of self-supported mechanically seamed roofing system made of high strength quality steel, having 350 MPA yield strength, pre coated galvalume sheet as per ASTM A792 M of base metal thickness of BMT (0.80mm to 1.60mm), High grade steel sheet should have 55% aluminium and 45% Zinc coating by hot dip process of minimum 25 micron on top side and 12 micron on back side with epoxy primer and polyester wash coat as per AZM 150 & the approved colour including fixing hangers, clamps etc., as may be necessary of standard layout., complete as per terms and conditions as applicable from time to time. Roofing should be designed as per ASCE 7-20 international building code 2002. The roof panel formation shall be done as per the required length and curvature using hydraulic operated profile machine to give it the trapezoidal shape in required curvature. In this process the width of sheet the width of sheet reduces from 0.914 meter to 0.62 meter (tolerance +/- 0.02 m). Original MIC fabrication machines only to be used for panel fabrication. The roof panel shall be lifted using a suitable crane and using a spreader bar and a sling evenly placed to ensure no distortion of panel till the alignment is done and completed using plumb and a water tube and bolted into beam. These curved panels should have interlocking formation and must be crimped together using mechanical seaming machine which imposed a load of approximately five tonnes to ensure the seaming of required rigidity. Minor color chipping/ scratching should be rectified by applying Epoxy lacquer. After seaming a clear epoxy lacquer is applied on the inner side of panel and concrete beam. These panels are installed over water proof concrete gutter - beams having bevelled edge to receive (support) curved panels.

Necessary arrangement including the supply for the installation of fasteners at the end will be there in the scope of the vendor. Contractor shall ensure that beam is designed for arch reaction and vertical loads. Plaster shall not be applied on the beam. Schmit hammer test of concrete should be carried before erection to ensure that the anchor bolt can be securely fixed on the support. The self-supported roofing system should be designed to withstand the wind load (as per IS 875 part-3) & Earthquake load (as per IS 1893). Area of this roof shall be measured along the periphery on hem-top between end-to-end panels. Ridge and valley shall not take in to consideration for measuring length transverse to periphery and as directed by the departmental Engineers in charge. Span Range: 6.0m to 15.0m c/c of Beam Material: Pre-painted Galvalume Coated Steel Sheets Base Metal Thickness ‘BMT’: 0.80 mm (+/- 0.02mm) After Paint Thickness ‘APT”: 0.85 mm (+/-0.02mm)

GST at 18%

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