Construction of Deep Piezometer at Thanjavur, Thiruvarur and Nagapattinam Distrricts, under National Hydrology Project.

Amount

Engaging of Mazdoor for preliminary field investigation, site clearance, cleaning the site after work, collection of soil samples, etc @ 3 Mazdoor for 15 days

Drilling of Borewell anywhere in Tamilnadu including transportation from one place to other place within Tamilnadu in alluvial soil or sedimentary strata of clay and sand stone, shale, pebbles, boulders etc., by first taking a pilot bore of 140mm/150mm dia and then enlarging to required dia by direct or reverse rotary mud circulation method using contractor’s rig, fuel, labour, drilling, betonite mud and water required for drilling at the site shown by the officers including construction of mud pit

Upto 60m depth ending below ground level

From 60m upto 90m depth ending from ground level

From 90m upto 120m depth ending from ground level

Drilling of borewell anywhere in Tamilnadu including transportation from one place to another place within Tamilnadu in alluvial soil or sedimentary strata of clay and sand or sand, stone, shale, pebbles, boulders etc., by first taking a pilot bore of 140 mm/150mm dia and then enlarging to required dia by direct or reverse rotatry mud and circulation method using Contractor's rig, fuel, labour, drilling, betonite mud and water required for drilling at the site shown by the TWAD Officers including construction of mud pit (only Calyx drills are to be used).

Drilling 140/150 mm dia Pilot bore upto 60 metre depthending below ground level.

Reaming from 150mm Dia Pilot of bore to 300mm dia bore as directed by the Departmental Officers.

Upto 60m depth ending below ground level

From 60m upto 90m depth ending from ground level

From 90m upto 120m depth ending from ground level

Reaming from 140/150 mm dia pilot bore to 300 mm dia bore as directed by the TWAD Board Officers upto 60 m Depth ending from ground level

Upto 60m depth ending below ground level

Supply of PVC casing pipes as per IS 12818 / 1992 and as amended from time to time with ISI marking of following diameter in 3m length with screwed and socket end. Complete and as directed by departmental officers.

150mm PVC Plain casing pipes CS

150mm PVC Plain casing pipes CM

150mm Ribbed Screen pipes

Labour charges for inserting 150mm dia (PVC Casing pipes assembly with slots or without slots) in the drilled hole including jointing the pipes etc.,complete and supplying and packing the annular space with pebbles of size and quality as approved by the departmental officers.

Labour Charges for inserting PVC casing pipes assembly (with slots or without slots) in the drilled hole including the jointing the pipes with PVC couplers with cement paste 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.

Charges for developing the borewell with air compressor of 300 CFM capacity (Minimum 8 Hours) including transportation labour and fuel charges for compressor as directed by TWAD Board Officers and conducting yield test by 'V' notch method.

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 per Quotation enclosed)

Supply of 160mm dia End cap for bore hole ( As per TWAD Board Schedule of Rates).

Earth work excavation for foundation and depositing on bank with initial lead of 10 m & 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 S.S. 20B to a required depth 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 1:3:6 (one cement, three sand and Sixhard broken stone jelly) using 20mm jelly for Foundation including laying, compacting, finishing and curing, etc., complete as per standard specificatins and as directed by the departmental officers.

Plastering with Cement mortar 1:3, 12 mm thick complete complying with standard specifications

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.

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.

Supplying of M.S.Grill enclosure of size 1.50 x 1.50 x 1.80 inclusive of one M.S. Grill gate of size 0.75 x 1.50 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 15 cm c/c. The gate should be of 0.75 x 1.50 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 15cm c/c with necessary aldrop for locking arrangements. The top of all square rods should be made of sharp. 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 includesall 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 1.20m x 0.90m 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.

Charges for the services of electrical logging in the pilot bore holes and mazdoor employed for electrical logging works as per G.O.(Ms) No.9.

Barricading work around the entire work site for laying of artificial recharge shaft using casurina poles at 1.50m center to center (8cm to 10cm dia and 1.80m height) vertical with horizontal poles in three rows including painting the vertical poles in the road facing sides with ready mix paint, tying the vertical and horizontal poles with coir rope including fixing charges and fixing 75mm dia reflectors including earth work excavation for fixing vertical posts and finally removing and stacking the materials safely for further use etc., complete and as directed by the departmental officers.

Charges for the services of Geophysical resistivity survey at Piezometer site and mazdoor employed for Geophysical investigation work and transportation charges.

GST for line items 1 to 23.

BHARATH BOREWELL COMPANY