Fencing Arrangements to Upper Nirar Tunnel Exit at Vellamalai of Valparai Taluk in Coimbatore 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 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 provided 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 impairing 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 of reinforcement 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).

Supplying and fixing of 'L' angle POSTS of size 75mm x 75mm x 6mm including cost of loading, conveying to work site, unloading, stacking and fixing in position including fixing of MS flats in the top and line of Chain links to rigidly fix to the vertical posts at work site with necessary supports complying with standard specification and at top and bottom barbed wire should be lay as directed by the Engineer in charge of work.

Cement Concrete 1:3:6 (One Cement, Three crushed stone sand and Six broken stone jelly) using 20mm size hard broken stone jelly for dummy columns,etc., excluding cost of centering shuttering reinforcement grills and fabrication charges but including curing etc. complete and as directed by the departmental officers. ( Dummy columns should be at least 1 metre height) -Mixing by manual means

Plain Cement Concrete 1:2:4 (one cement, two crushed stone sand and four hard broken stone jelly) using 20mm jelly for foundation including laying, compacting, finishing and curing, etc., complete as per standard specifications and as directed by the departmental officers.- Mixing by manual means.

Supplying and fabricating of steel required for all RCC works involved in the schedule including cost of steel, cost of fabrication ,labour charges for cleaning the rods, straightening, cutting ,bending ,tying grills including over lapping to the required length wherever necessary and placing reinforcement in position as specified in the drawing including cost of binding wire provision for spacer bar, cover blocks and all other incidental charges, etc. complete complying with standard specification and as directed by the departmental officers.

Manufacturing, Supplying of M.S. Single Leaf Gate of size 2.10M X 1.80M gate frame made out of 65x65x6mm 'L'angle, horizontal and vertical stiffeners made out of same angle and bottom half of gate covered by 2mm thickness H.R. sheet by welding all round the top half of gate covered by 10mm Square rod at 10cm spacing and fixing by welding, Gate hinge made out of M.S. shaft by grinding and fabricating in required size and fixing into gate by welding including cost of all materials, locking arrangements, labour charges with one coat of red oxide primer and two coats of A.C. black paint etc., including conveyance to site of work etc., as per standard specification and as directed by the Departmental Engineers.

Manufacturing, Supplying of M.S. Double Leaf Gate of size 4.50M X 2.10M gate frame made out of 65x65×6mm L' angle, horizontal and vertical stiffeners made out of same angle and bottom half of gate covered by 2 mm thickness H.R. sheet by welding all round the top half of gate covered by 10mm Square rod at 10cm spacing and fixing by welding, Gate hinge made out of M.S. shaft by grinding and fabricating in required size and fixing into gate by welding including cost of all materials, locking arrangements, labour charges with one coat of red oxide primer and two coats of A.C. black paint etc., including conveyance to site of work etc., as per standard specification and as directed by the Departmental Engineers.