IMPROVEMENTS (CIVIL WORKS) TO FULL CLIMATIC STATION , GD STATION AND IMPROVEMENTS TO PIEZOMETER STATIONS UNDER THE CONTROL OF GROUND WATER DIVISION, TRICHY UNDER NHP FOR THE YEAR 2020-2021.

Amount

Earth work excavating and depositing on bank with initial lead of 10m & initial lift of 2m 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 SS.20.B to a required depth as directed by the departmental officers.

Supplying and filling in foundation, basement, etc with filling sand in layers of not more than 15 cm thick well watered, rammed and consolidated etc. complete complying with standard specification and as directed by the departmental officers.

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

Supplying erection and 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 1:2:4 (One Cement,two Sand, and four hard broken granite jelly) using 20mm hard broken granite jelly and river sand to the work including curing and finishing etc., complete complying with the standard specifications.and as directed by the departmental officers.

White washing two coats with freshly burnt white shell lime in all floors including cost of lime, blue powder fevicol type gum, brushes, scaffolding charges, etc., complete complying with standard specification and as directed by the departmental officers.

White washing one coat with freshly burnt white shell lime in all floors including cost of lime, blue powder, fevicol type gum, brushes, scaffolding charges, etc., complete complying with standard specification and as directed by the departmental officers.

Painting the walls with two coats of best approved quality cement paint finish over existijng plastered wall surface including clearing preparing the surface and curing etc, complete complying with standard specification and as directed by the departmental officers .

Painting Old 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 one coat of red oxide priming coat in all floors including cost of priming coat etc., complete complying with standard specification. (The make, quality and colour of paint should be got approved by the Executive Engineer before use on works.)and as directed by the departmental officers .

Supplying of M.S.Grill enclosure of size 1.50 x 1.50 x 2.10 inclusive of one M.S. Grill gate of size 0.75 x 1.80 m as per specifications. The M.S. Grill enclosure should have 5 Nos. of the vertical M.S. Angle of size 40 x 40 x 6 mm for the four corners and one at rear gate. The alround horizontal ties are with three numbers of 40 x 40 x 6 mm M.S. angle one at botton and one at middle and one at top, 16 x 16 x M.S. Square rod are to be provided in between the vertical angles at 10 cm c/c. The gate should be of 0.75 x 1.80 m size with 40 x 40 x6 mm M.S. angle at round and one horizontal at middle including 16 x 16 mm M.S. square rod for vertical at 10cm c/c with necessary aldrop for locking arrangements. The top of Grill Enclosure should be covered with 6 Nos of MS angle of size 40x40x6mm and 13 Nos of 16 x 16 mm square rods.. The entire should be made with bolt and nut arrangements has to attach each side separately and it can be yearly fixed at site. The cost includes all cost of materials required, labour charges for cutting threading, bolt and nuts, one coat red oxide with two coats of enamal paint etc attached with Name board of size 0.90m x 0.60m and using 10 gauge M.S plate of 6mm thick and painting two coats using first quality synthetic enamal paint etc., complete and lettering the name board with best approved quality paint and colour including labour for lettering complete as directed by the departmental officers

Supplying fabricating and fixing Name board of size 0.90m x 0.60m and using 18 gauge M.S plate of 6mm thick and using M.S angle section of 65x65x6mm for vertical post and 50x50x6mm size alround and 30x30x3mm for diagonal and painting two coats using first quality synthetic enamal paint etc., complete and lettering the name board with best approved quality paint and colour including labour for lettering as directed by the departmental officers.

Supply and fixing of chain link mesh-alround and as directed by the departmental officers.(Piezometer Station-Arasarkulam)

Painting 2 coats over old wood work with approved colour and quality as directed by the departmental officers

Painting the Pedestal and MS box for top open type (for Piezometer stations at Mudikandam, Nagamangalam,Piranpatti, Kallikudi, Vadugapatti and Nadupatti, Pulivalam, )

Painting the existing chain link fencing (Nadupatti, Pulivalam, )

Painting the Name board &Writing the Particulars on the name board as per instruction given by dept officers, etc complete

Charges for developing the Borewell with air compressor of 600 CFM capacity (Minimum 8 Hours) including transportation, labour and fuel charges for compressor as directed by the Departmental officers and conducting yield test by ‘V; notch method.

Clearing the vegetation growth and keeping the site clean and neat in and around the site

Dismantaling Brick partion walls in Cement mortar 1:3 walls under 3m high

Dismantaling Brick masonary in Cement mortar walls under 3m high

Cement concerte 1:5:10 using 40mm HBGS Jelly for foundation laid in layers not more than 15cm thick extra comlete complying with standard specification

Supplying and erecting steel centering including necessary supports for plane surfaces for Reinforced Cement Concrete works 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 in all floors complying with standard specifcation.

Reinforced Cement Concrete 1:2:4 (One Cement, Two M.sand and Four hard broken stone jelly) using 20 mm gauge hard broken granite stone jelly for all RCC items of works 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 and bearing surfaces of walls, beams etc. shall be finished smooth with Cement Mortar 1:3 (One Cement and Three Sand) and kraft paper laid over it without claiming extra, etc., complete complying with standard specification and as directed by the departmental officers

Supplying, fabricating and placing in position Mild Steel / Ribbed Tor Steel grills for all RCC works as per design given including cost of steel and G.I. binding wire in all floors etc. complete complying with standard specification. (Contractor has to make his own arrangements for the supply of steel and binding wire)

Brick Work in cm 1:5 using Second Class Ground Moulded brick of size 9" x 4 1/2" x 3" extra comlete complying with standard specification

Plastering with Cement Mortar 1:3 (One cement and Five sand), 10mm thick in all floors including curing etc. complete complying with standard specification and as directed by the departmental officers.

Dismantling the plain cement concrete

Reinforced Cement Concrete M25 using 20 mm gauge hard broken granite stone jelly for all RCC items of works 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 and bearing surfaces of walls, beams etc. and kraft paper laid over it without claiming extra, etc., complete complying with standard specification and as directed by the departmental officers- Foundation and basement.

Providing granolithic floor finish of the following thickness with plain cement concrete 1:2:4 (One Cement, Two 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) for 25mm thick

Fabricating and supplying of Protection Box for observation bore well using 5 mm thick M.S. Steel Plates to the dimension of 650 mm x 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, Dindigul/Godrej 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.

GST for line items 1 to 30

I RAYAR

P GUNASEKARAN