Construction of 2.50LL Capacity Collection well at Chitlapakkam 2nd main road OHT in ward no.34

Earth work excavation and depositing on bank within an initial lead of 10 m and the following lifts in Hard stiff clay, stiff black cotton, hard red earth, shales, murram, gravel, stoney earth and earth mixed with small size boulders and hard gravelly soil

First depth of 0 to 2 m

For stair case foundation

Soft disintegrated rock, laterite, soft rock or kunkar not requiring blasting

2nd depth of 2 to 3 m

Medium rock and dence medium rock not requiring blasting

2nd depth of 3 to 4 m

3rd depth of 4 to 5 m

4th depth of 5 to 6 m

5th depth of 6 to 7 m

Plain cement concrete 1:4:8 using 40 mm hard broken granite metal for levelling course including cost of placikng, ramming, consolidating, curing etc. complete for footings.(1.5m to 4.5m below GL)

PCC Laying (upto 1.5m below GL)

Beyond 4.5 m below GL

Providing and laying in position Standardised Concrete Mix M-30 Grade in accordance with IS 456 - 2000 using 20mm and down graded hard broken granite stone jelly for all RCC items of works with minimum cement contenet of 400Kg/ cum and maximum water cement ratio of 0.45 including admixture (Plasticiser / super plasticiser) in recommended proportions as per IS 9103 to accelerate, related setting of concrete, improve workability without imparing strength and durability with about (5.0cum), 7730Kg of 20mm machine crushed stone jelly and with about (3.3 cum), 5156kg of 10 - 12mm machine crushed stone jelly and with about (4.79cum) 7670 kg of Crushed Stone sand (M- Sand) but excluding cost of reinforcement grill and fabricating charges centering and shuttering but 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 cost 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 requiremnents of IS standards.

Beyond 4.50 m & up to 9.0 m below GL

Beyond 1.50 m & upto 4.50 m below GL

Upto 1.50 m Below GL from GL

From GL to 4.5 m above GL

Above 4.50 m and up to 7.32 m above GL

Supply, fabrication,placing in position of steel rods cutting, tying etc., complete including cost of reinforcements

Upto 16 mm dia

Above 16 mm dia

Supply and erection of steel centering, shuttering for soffits and sides including necessary supports and strutting for all RCC works using MS sheets of suitable size of BG 10 stiffened with MS angle of size 25 X 25 X 3mm for boarding laid over Silver Oak joists of size 10cm X 6.5cm space at 10cm c/c and supported by Casurino Props 10cm - 13cm spaced at 75cm c/c etc., complete and as directed by Departmental Officers.

For 0.00 to 3.30 M (Plane Surface)

For 3.30 M- 4.3 M (Plane Surface)

For 4.30 M- 5.3 M (Plane Surface)

For 0.00 to 3.30 M (Curved Surface)

For 3.30 M-4.3M (Curved Surface)

For 4.30 M-5.3M (Curved Surface)

For 5.30 M-6.3M (Curved Surface)

For 6.30 M-7.3M (Curved Surface)

Brick work in CM 1:5 mix using country bricks of size 22cm x 11cm x 7cm for the following works including curing etc., complete complying with standard specification and as directed by the Departmental Officers.

Up to 4.5 m above ground level

Above 4.5 m above ground level

Special ceiling plastering with CM 1:3 mix 10mm including cost and conveyance of all materials to site, loading and unloading charges and labour charges for mixing, laying and curing etc,. Complete. Complying with std. specifications - 10m2

Plastering with CM 1:5 mix 10mm thick for walls inside complying with standard specification and as directed by the Departmental Officers.

Providing granolithic floor finish of 25mm thickness with plain cement concrete 1:2:4 (One Cement, Two crushed sand (M-Sand) and Four aggregate) using 10 to 12mm gauge hard broken stone jelly including laying, finishing and the top rubbed smooth with power trawl, thread lining, curing etc. complete complying with standard specification and as directed by the departmental officers. (The rate is inclusive of necessary planking for panelling wherever necessary and as directed by the departmental officers)

Weathering course with concrete broken brick jelly of 20mm size in pure slacked lime (No sand to be used) over roof slab the proportion of brick jelly to lime being 32:12.5 for required depth and slope etc., complete.

Finishing the top of roof with one course of machine pressed tiles 23cm X 23cm X 2cm size using cement mortar 1:3 mix mixed with 2% by weight of Crude Oil and pointing with Cement Mortar 1:3 mix cost of all materials and labour charges and brick jelly concrete - 10m 2

Painting two coats with approved emulsion paint over cement plastered wall surface (outside) including cleaning, preparing the surface and curing etc., complete and as directed by the Departmental Officers.

White washing Two coats with good quality of Shell Lime including cost of all materials to site and all labour charges for mixing, applying and proper curing etc., Complete as per Standard Specifications. Rate for 100 Sqm