Construction of Deep Piezometers in Ground Water Division, Tirunelveli for the year 2020-2021

Amount

Drilling of 150 mm dia bore wells above the overburden soil in hard rock areas to the required depth as directed by the departmental officers including labour charges for inserting casing pipes assembly in the drilled holes, if necessary grouting the casing pipe etc., (excluding cost of casing pipe)including transportation charges for the rigs and supporting vehicles from one place to another place etc., complete complying with standard specification.

Drilling of 110 mm dia bore wells above the overburden soil in hard rock areas to the required depth as directed by the departmental officers including labour charges for inserting casing pipes assembly in the drilled holes, if necessary grouting the casing pipe etc., (excluding cost of casing pipe)including transportation charges for the rigs and supporting vehicles from one place to another place etc., complete complying with standard specification.

Supplying PVC Special Blue Slotted Pipes for Bore Wells suitable to 150 mm dia Bore well, best approved quality with ISI mark with necessary PVC coupling as directed by the departmental officers complete complying with standard specification.

Supplying PVC Special Blue Slotted Pipes for Bore Wells suitable to 110 mm dia Bore well, best approved quality with ISI mark with necessary PVC coupling as directed by the departmental officers complete complying with standard specification.

Supplying and fixing of 75 mm dia 6 Kg/ cm2 PVC inner pipes into the Bore well to the required depth as directed by the departmental officers complete complying with standard specification.

Fabricating and Supplying the encasing cover with 3mm thick M.S. Pipe to protect PVC casing pipe for a depth of 1.50 m of which 0.75 m goes below the G.L. and 0.75 m stands above G.L. including the Red oxide paint as directed by the departmental officers complete complying with standard specification.

Earth work excavation for foundation and depositing on bank with initial lead of 10 m & initial lift of 2m in Hard stiff clay, stiff black cotton, hard red earth, shales,murram, gravel, stoney earth and earth mixed with small size boulders SS.20B to a required depth as directed by the departmental officers complete complying with standard specification.

Supplying and erecting centering for sides and soffits of plain surfaces such as slab etc., using M.S. Sheets of size 90cm x 60cm BG 10 gauge stiffended etc., complete complying with standard specification.

Cement Concrete 1:3:6 (One Cement,three Sand, and six hard broken granite jelly) using 20mm hard broken granite jelly and M. sand to the work including curing and finishing as directed by the departmental officers complete complying with standard specification.

Plastering with Cement mortar 1:5, 12 mm thick complete complying with standard specification.

Fabricating and supplying of Protection Box for observation bore well using 5 mm thick M.S. Steel Plates to the dimension of 650 mm * 400 mm. Height of box at rear side is 530 mm and 450 mm at front side. Top cover with projection to be provided with necessary hinges and pad lock arrangement to open and lock the box. Necessary arrangements to be provided at the bottom of the box to embed the box with concrete platform. The cost includes all materials, labour for welding, one coat red oxide primer, painting with two coats of approved enamel paint, Bolt, Nut, Lock and Key, writing the bore well details on the protection cover and transporting to the following bore well site as directed by the departmental officers complete complying with standard specification.

Fabricating supplying and fixing of Outer Fencing in position M.S Steel framed weldmesh grill using 40x 40x 6mm angle for outer frame with 25 x 6 mm flats stiffeners welded 4 Nos horizontally and 3Nos welded vertically in both direction and using 3"x 1" and fixing of steel door with outer frames of size 35x35x6mm for the shutter frames stiffeners with 25 x 6mm M.S flat is provided at 4 Nos diagonally and 2 Nos in the middle portion of door front and back in the shutter frame. 18-gauge C.R. sheet laid as panel in the shutter and welded intact. with necessary locking facilities and hinges including one coat of red oxide primer as directed by the departmental officers complete complying with standard specification.

Painting new iron works such as steel doors, windows, ventilators, window bars, balustrades etc., with two coats of best approved first quality and colour of synthetic enamel paint over the existing red oxide priming coat in all floors excluding cost of priming coat as directed by the departmental officers complete complying with standard specification.. (The make, quality and colour of paint should be got approved by the Engineer before use on works.)

Supplying and fixing the information Board with 16 guage M.S. Sheet of Size 0.6 x 0.6 m with necessary fixing arrangement, painting two coats over one coat of red oxide primer, wiriting the details of piezometer as directed by the departmental officers complying with standard specification.

Supplying and fixing of MS clamp for holding 75 mm PVC pipe in borewell platform including cost of materials, labour charges, Conveyance charges as directed by the departmental officers complete complying with standard specification.

Labour charges for pumping test by providing all machinery and accessories required including cost of transpotration charges and Flushing the Borewell.for 2 hours. as directed by the departmental officers complete complying with standard specification.

MR.M.MADHAVAN

MR.V.SURESHKUMAR