Rehabilitation and Improvement to the approach road leading to the Power House I tunnel entry of Sholayar Dam of ValparaiTaluk of Coimbatore District

Amount

Earth work excavation for foundation and depositing on banks with initial lead of 10 m and initial lift of 2 m in sand, silt or other loose soil, wet sand or silt not under water, light black cotton soil, sandy loam and ordinary soil, including excavated earth and hard stiff clay, stiff black cotton, hard red earth, shales, murram, gravel, stoney earth and earth mixed with small size boulders, etc., inclusive of shoring, strutting and bailing out water wherever necessary etc., complete complying with standard specifications and as directed by the departmental officers.

Picking the existing metalled surface 50 mm to 100 mm depth including all labour charges for picking and all other incidental charges etc., complete as per MoRTH Specification and as directed by the departmental officers.

Providing and Laying of Plain Cement concrete of 1:3:6 grade (one Cement three M.Sand and six Aggregate) using 40 mm HBGS jelly to IS specified grading and mixing by mixer machine including dewatering by bailing/ pumping wherever necessary laying the concrete in layers and in bays with all leads and lifts , compacting and finishing the surface, watering, curing etc., for various depth and height below and above Ground level so as to obtain the profile and strength specified inthe drawings as per the direction of the departmental officers and complete complying with standard specification.

Supplying and erecting steel centering including necessary supports for plain surfaces such as column footings, column pedestals, plinth beams, grade beams, staircase steps, 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 over silver oak joists of size 10cm x 6.5cm spaced at about 75cm centre to centre or at suitable intervals etc. complete complying with standard specification and as directed by the departmental officers. (Below Sill) (For Without Stutting) (Payment for centering shall be given after the concrete is laid)

Supplying and erecting centering for sides and soffits including necessary supports and strutting upto 3.29 M height for plane surfaces as detailed below in all floors with all cross bracings using Mild Steel sheets of size 90 x 60 cm and 10 BG stiffened with welded Mild Steel angle of size 25mm x 25mm x 3 mm for boarding laid over silver oak joists of size 10cm x 6.50 cm spaced at abote 90 cm centre to centre and supported by casurina props of 10cm to 13 cm dia spaced at not more than 75 cm centre to centre etc. complete complying with the standard specificaiton. (Payment for centering shall be given after the concrete is laid)

For Plain Surface

For Vertical Surface

Supplying, fabricating and placing in position of Mild steel or Ribbed tor steel reinforcement grills for all RCC works as per the approved drawings and detailed specifications includiong cost of steel, binding wire, labour charges for cutting, bending and placing in position etc., complete complying with standarde specifications and as directed by the Engineer in charge of the work.

Supplying and fixing of 12 mm thick bitumen pad for construction and expansion joint for concrete pavement and retaining wall at 15m spacing as per standard specification etc., complete and as directed by the departmental officers

Providing and Laying in position , Plain Cement concrete of M15 grade design mix with downgraded aggregates of nominal size coarse aggregate maximum size of 60 % of 20 mm and 40% of 12 mm and down graded conforming to IS Specified grading ( To achieve the specified characteristic strength of 15 N/mm2 in 28 days)and mixing the ingredient by approved mixer machine including dewatering the placement site by bailing/ pumping wherever necessary laying the concrete in layers and in bays with all leads and lifts, compacting and finishing the surface, watering, curing etc., for various depth and height below and above Ground level so as to obtain the profile and strength specified inthe drawings as per the direction of the departmental officers and complete complying with standard specification.

Supplying and fixing 110 mm dia PVC pipe for weep hole including cost of cutting and fixing in RCC wall, cost of all materials, labour, lead, lift, etc., complete.

Providing and laying cement concrete (wearing concrete) M30 grade design mix using crushed broken hard granite aggregate (well graded) of Nominal Maximum size of 20mm and down grade to I.S grading (to achieve the specified characteristics strength of 30N/mm2 in 28 days) and mixing the ingredients in approved mixer, placing in bays, vibrating, water curing, finishing the surface with all leads and lifts etc complete as per MORTH specification No.1500, 1700 & 2200 etc., complete as per standard specification and as diredted by departmental officers.

Sub Total

GST at 18%

CHITRAHEM CONSTRUCTION COMPANY

S.R.V and Co