Details: rotary boring/ drilling of "sx" (150mm) size and ‘nx’(75 mm ) size holes and enlarging to "sx" (150mm) size in progressive manner, by first making "sx" size hole upto the depth of uds collection, , collecting suitable number of uds as per drawing and schedule in a 150 mm hole, then making a 75 mm borehole for pmt test, conducting the pmt test , then enlarging it to 150 mm, ........note- for complete item description please refer annexure-d of technical specification. the quoted rate shall include the activities as mentioned against sl. no-1 of item description of annexure-d of technical specification. 0 m to 25 m providing and installing permanent new pvc casing of hx size dia in the already drilled sx size holes including filling the annular space by bentonite / other suitable material as directed by eic along with necessary coupling, cutting, threading etc. complete, in the above specified drilled holes, wherever asked for by the engineer. conducting standard test (spt) in the b
Sector: Generation