Chennai Metropolitan Development Authority Tender

Earthwork excavation for foundation (for narrow excavation) to full depth as per designed in all soils and sub soils except soft disintegrated rock not requiring blasting and hard rock requiring blasting and bailing water wherever necessary. Refilling the sides of foundation with excavated earth other than sand in layers of well rammed and compacted and depositing the surplus earth in places shown by the departmental officers with an initial lead of 10m and initial lift of 2m and clearing and leveling the site etc. complete complying with standard specification.

0 to 2m depth.

2.0 to 3.0 depth

3.0 to 4.0 depth

4.0 to 5.0 depth

Supplying and Filling with M - sand in foundation and others sub structures for 100mm thick and well watered, rammed and consolidated by power compacter. The rate includes the cost of M sand, compacting with mechanical compactors labour charges for leveling, loading & Unloading and Transportation charges etc., complete and as per the standard specification.

Providing and laying plain cement concrete 1 : 4 : 8 ratio of (1 of cement , 4 of M. sand and 8 of graded stone aggregate 40mm nominal size) in foundation and basement including dewatering wherever necessary and laid in layers not more than 15 cm thick and consolidation etc. The rate includes the cost of materials, labour charges, lifting charges, loading & Unloading and Transportation etc., complete and as per the standard specification.

Supplying and erecting the centering for sides and soffits including supports and strutting up to 3.30 m height with all cross bracing for plane surfaces as detailed below, using mild steel sheets of 90 X 60 cm 10 gauge stiffened with MS angle of 25 X 25 X 3mm for boarding, laid over adjustable span & jacks and supported by 50mm dia pipes for general pipes scaffolding systems @ a spacing of 1.20m c/c and vertical connected at a height of 2.0m c/c including 'C' & 'U' clamps and base receiver cup at bottom for connecting pipes etc and removable systems etc., the rate including cost of all materials, labour charges, wastages, placing, transportation, lead & lifts, tools & plants, fuels, fixing in position at all levels, heights, masking tape in sheet joints, consumables, etc. as complete with all respects complying with relevant standard specification, as directed by the Engineer-in-charge.

For Plane surfaces such as RCC floor slab, roof slab, beams, lintels, bed blocks, landing slab, waist slab, portico slabs and beams, etc.

For column footing plinth beam bed blocks templates staircase, steps piers, raft beam, raft slab etc.

For plane surfaces such as vertical slab, side slabs of boxing, vertical drops, facia, vertical walls etc.

Providing and Laying M 30 Design Mix for all reinforced cement concrete with minimum cement content confirm to IS 456-2000 using ordinary Portland cement of grade 53 from approved manufacturer, manufactured sand, 20 mm and down graded size coarse aggregates, necessary approved admixtures as per requirement. works for Footings, Grade beam, drain wall & raft , Plinth beams, Column, Grade slab, Roof slab & beam, Column drops, Pergola, Staircase waist and landing slab lintel, Sunshades, parapet Cum drops, Steps, canopy, window boxing slab, Loft, fins facia Planter box, machine foundation, elevation features and other similar structures etc..excluding necessary centering, shuttering and reinforcement which shall be measured and paid separately under relevant items. Rate includes cost of all required materials,labour charges, loading , unloading Transportation and lifting charges complete as directed by the Departmental officers.

Supplying, fabricating and fixing in position of steel Fe 550 grade Reinforcement for all RCC work with Thermo Mechanically Treated Bars (TMT) conforming to IS 1786 of latest version according to drawings and binding the reinforcement with 18 gauge double fold GI binding wire and providing Concrete cover blocks to maintain the cover as required. The rate including cost of all materials, bending, tying grills, placing, transportation, lead & lifts, tools & plants, fuels, all materials, labour charges, wastages , laying at all levels, fixing in position, cost of cover blocks and GI binding wires etc. as complete with all respects complying with relevant standard specification, as directed by the Engineer-in-charge.

Providing, precasting and placing to the required gradient, M30 grade precast Concrete cover slab - 150 mm thick with perforation of size as per drawing over storm water drain etc., with edge protection of all edges using MS angle of 30 x 30 x 5 mm thick including finishing all surfaces, curing, transporting to the site, lead & lifts fixing in position, water tight pointing, etc complete but excluding the cost of steel reinforcement and as directed by the Engineer-Incharge. Rate to include all designing the mix, batching plant, mechanical mixing, transporting and placing at all levels, leads, lifts, tools & plants, fuels, all materials, labour charges, wastages , laying, pumping the concrete to all levels, compaction by vibrator, finishing smooth on exposed surfaces, fixing in position, cost of PVC sleeves, MS hooks with, finishing the joints with CM 1:3 (1 of Cement : 3 of manufactured sand ), curing etc. as complete with all respects complying with relevant standard specification, as directed by the Engineer-in-charge.

Providing and fixing Heavy duty grating for trenches, drains and water collection sump etc., of various size od opening in drain trenches made out of galvanized steel and all as per manufacture's specification of approved make including necessary supports, suitable angle iron frames, grouting the supports using C.C 1:2:4 and finishing the surface neatly, welding the angle / Flat with consumables, Painting iron frame with 2 coats of Synthetic Enamel paint over a coat of Zinc phosphate primer etc. complete and all as directed.( Note : Clear opening will be measured and paid for. )