Chapter -2
Construction of Gravel Packed Tubewell

S.No Description of Item Unit Rate in Rupees
1

Drilling of perfectly vertical bore hole of following diameters for construction of Gravel Packed tubewell up to desired depth in alluvial formation consisting of Soils, Clays, Sand, Gravel, Moorum, Boulders etc. and retaining the bore hole by using suitable drilling mud or foam or temporary housing pipe including all works pertaining to drilling such as transportation, installation and removal of drilling machine etc.complete
(a)
 300 m.m. diameter Meter 310
(b)
 350 m.m. diameter Meter 329
(c)
 400 m.m. diameter Meter 350
2

Labour charges for assembelling, centering and lowering of properly designed casing pipe assembly inside the bore hole drilled for construction of Gravel Packed tube well including the cost of providing and fixing of centraliser, and transportation of casing assembly etc. complete
(a)
 Casing assembly composed of 100 m.m. diameter blank and slotted G.I. Casing pipes. Meter 17
(b)
 Casing assembly composed of 150 m.m. diameter blank and slotted G.I. Casing pipes. Meter 23
(c)
 Casing assembly composed of 100 m.m. dia. UPVC blank and screened pipes. Meter 9
(d)
 Casing assembly composed of 150 m.m. dia.UPVC blank and screened pipes. Meter 21
(e)
 Casing assembly composed of 200 m.m. dia.UPVC blank and screened pipes. Meter 33
3 Providing and fixing of M.S. bail plug as per I.S.2800( PART-I ) 1991 in the bottom of casing assembly
(a)
 100 m.m. dia. each 150
(b)
 150 m.m. dia. each 200
(c)
 200 m.m. dia. each 250
4 Providing gravel packing with uniformly graded gravel as per I.S.4097 of 1967 (revised up to date ) in the annular space between outer wall of casing pipe assembly and inner wall of bore hole including cost of gravel, transportation, stacking , washing and packing in layers of suitable thickness including all lead and lifts complete. Cu.m 412
5 Providing and fixing of well cap
M.S. Caps -
(a)
 100 mm dia. each 100
(b)
 150 mm dia. each 150
(c)
 200 mm dia. each 175