CONSTRUCTION OF DEEP PIEZOMETERS IN KANCHIPURAM DISTRICT (Chithamur, Mangadu and Maduramangalam) AND THIRUVALLUR DISTRICT (Madhavaram, Sholavaram, Gummidipoondi and Periyapalayam) UNDER NATIONAL HYDROLOGY PROJECT FOR GROUND WATER DIVISION, CHENNAI.

Amount

Engaging of Mazdoor cat -1 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 Drilling of 140/150mm Pilot bore

a.Upto 60m depth ending below ground level

b. 60m - 90m depth ending below ground level

Drilling of bore wells of size 6 inch diameter in hard rock area using DTH Rig and as directed by Departmental officers. a.Upto 90m depth ending below ground level

Reaming 140/150 mm dia pilot bore to 300mm dia bore as directed by the Departmental officers.

a. Upto 60m depth ending below ground level

b. From 60m - 90m depth ending below ground level

Provision for supply of inner PVC Pipe (6kg/cm^2) 3" inch diameter etc. Complete complying with standard specification.

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.

1) 150mm PVC Plain casing pipes

2) 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.

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.

Supply of 150mm dia end cap for bore hole

Supply of fabricated MS box with sides made up of 10 Gauge MS sheet, as per specification.

Construction of Platform of size 1.20 x 1.20 x 0.90m as per approved drawing and technical specification

Provision for protection of drilling site by erecting temporary fencing etc., to prevent children from falling into the drilling site as per CE Lr.No.G6/Misc./Protection from bore wells / 2009-1/ Dt:29-03-2010.

Fabricating, supplying and fixing of Outer Fencing in position M.S Steel framed weld mesh grill including painting new iron works as directed by the departmental officers etc., complete complying with standard specification.

Provision for Supply of clamps with bolt & nuts for 6'' pipes

GST for line items 1 to 14

SAMUNDEESWARI CONSTRUCTIONS

Kotteeswaran