Construction of Retaining wall in the Krishna Water Link Canal at breached Portions of LS 9850m,17050m and 22000m in Tiruvallur Taluk of Tiruvallur District.

Amount

Earth work excavation in all soils except Medium rock / hard rock requiring blasting conveying for Formation of bund with a lead 2km deploying earth moving machineries and tipper including benching formation of bunds, breaking clods, sectioning with a extra watering and consolidation by power roller and including hire charges etc. complete complying with standard specifications and as directed by the departmental officers

Earth work excavation deploying earth moving machinery for desilting channel including jungle clearance and conveying the excavation earth in the low lying area with lead of 2km conveying with tippers, levelling and excluding formation of bund etc, complete complying with standard specifications and as directed by the departmental officers.

Extra for every additional 1 metre lift or part thereof over the initial lift etc., complete complying with standard specifications and as directed by the departmental officers

Earth Work Excavation for foundation in all soils and sub soils and to full depth as may be directed by the Departmental Officers except hard rock requiring blasting including shoring, strutting and baling out water wherever necessary and refilling the sides of foundation with excavated soil in layers not exceeding 15 cm thick, well rammed and consolidated and depositing including all initial leads and initial lifts, etc., complete complying with standard specifications and as directed by the departmental officers (Narrow Excavation)

Supplying and erecting centering for vertical plain / RCC concrete walls of supply channel, retaining wall etc for following height with necessary supports , all cross bracing with mild steel size of 90 cm x 60 cm and gauge BG 10 stiffened with welded mild steel sheet angles of size 25 mm x 25 mm x 3mm for bearing laid silver oak / country wood joist of size 7.50 cm x 5.0 cm spaced @ about 90 cm C/C and supported by casurina props of 10 cm to 13 cm spaced @ 75 cm C/C , etc., complete complying with standard specifications and as directed by the departmental officers. (Vertical Centering)

0 m to 2.70 m or 3 m

Supplying, fabricating and placing in position of Mild Steel or Ribbed Tor Steel for all RCC works as per design & drawing given including cost of steel, binding wire and labour charges for cutting, bending, laying in position and tying with binding wire, etc. complete complying with standard specifications and as directed by the departmental officers

Providing and placing in position of plain cement concrete M10 grade using M Sand & graded hard blue granite broken stone jelly of 20 mm size mixing with mixer machine including the cost of bailing/pumping wherever necessary laying the concrete in layers of not exceeding 15 cm thick, compacting, consolidation, finishing, watering, curing etc. complete complying with standard specifications and as directed by the departmental officers

Providing and placing in position of plain cement concrete M 15 grade using M.sand graded hard blue granite broken stone jelly of 60% of 40 mm size and 40% of 20 mm size mixing with mixer machine and laying in layers including the cost of bailing/pumping wherever necessary laying the concrete in layers of not exceeding 15 cm thick, compacting, consolidation by using vibrators, finishing, watering, curing etc. complete complying with standard specifications and as directed by the departmental officers

For works upto 1.50m depth below G.L and upto 1.0m height above G.L

For works above 1.50m to 4.50m. Below G.L

For works above 4.50m to 9.00m. Below G.L

Providing and placing in position of plain cement concrete M15 grade using M.sand and hard blue granite broken stone jelly of size 20mm mixing with mixer machine including the cost of bailing and pumping where ever necessary laying in layers of not exceeding 15 cm thick, compacting, consolidation, finishing, watering, curing etc. complete complying with standard specifications and as directed by the departmental officers

For works upto 1.50m depth below G.L and upto 1.0m height above G.L ( with out vibrator )

For works above 1.50m.to 4.50m. Below G.L (with out vibrator)

For works above 1.50m.to 4.50m. Below G.L (with vibrator)

For works above 4.50m.to 9.00m. Below G.L (with vibrator)

Providing and fixing pre-cast cylindrical porous plug of 75mm dia, 300mm length in porous concrete CC 1:0:4 as shown in the drawings with filter having size 0.45x0.45x0.45m sand and 12mm to 40mm coarse aggregate mixed with 1/3 sand, 0.30x0.30x0.30m including excavated separators filter material including cost of all materials, labour incidental charges etc complete complying with standard specifications and as directed by the departmental officer.

Gravel backing for apron / revetment / retaining wall in layers not exceeding 15 cm thick including stacking for pre-measurement, watering, consolidation and trimming the top surface so as to receive the rough stones, etc complete complying with standard specifications and as directed by the departmental officers

Supplying and spreading sand gravel mix ratio of 1 : 1 for required thickness over the top of bund and other places as required at site of work including watering and consolidation using power roller, etc, complete complying with standard specifications and as directed by the departmental officers

Supplying and fixing Bitumen pad of thickness 20mm confirming to IS 1838 for joints including cast of all material and laburs etc complete complying with standard specification and as directed by the departmental officers

Dewatering using 5HP diesel engine pumpset including Hire charges, cost of Diesel, Engine oil, pump operator, labour charges, conveyance of pumpset and fuel to site and back, loading, unloading and any other incidental charges etc., complete. complying with standard specification and as directed by the departmental officers.

Supplying and fixing Weep holes for retaining walls using 75mm dia PVC Pipes (PVC / Finolex or equivalent with ISI monogram with working pressure of 4Kg/cm2) including cost of materials and labour charges for fixing in concrete etc complete complying with standard specifications and as directed by the departmental officers.

Back fillling the rear side of retaining wall, lining etc., with a mix of 50% mother earth and 50% of gravel including stacking of pre measurement, mixing,watering,laying in layers of not exceeding of 23cm thick, consolidation etc., complete complying with standard specifications and as directed by departmental officers

GST 18 % in Figures

Boson Infra India Private Limited (BID ID -1385167)

SUNDARARAJAN (BID ID -1386950)