Bhabha Atomic Research Centre Tender

Forming vertical piles including initial test piles by boring through fill and all kinds of soils including hard murrum with gravel and chiselling through occassional boulders and soft / weathered / hard rock by continuous mud circulation technique and bailer boring / Rotary Drilling method as specified, including conducting Standard Penetration test all as instructed by Engineer In Charge, carting away the bored excavated soil upto a lead of 600 M, fixing reinforcement as per drawing, casting the piles with Specified grade concrete by tremie only, using graded stone aggregates of maximum size 20 mm, ordinary portland cement with a minimum cement content of 400 kg. per cubic m of concrete and with water cement ratio including the water contained in the aggregates not exceeding 0.40, etc. all as specified. The Rate includes concreting a minimum of 600 mm above specified cut-off levels, cutting of piles at cut-off level specified including cost of all materials, admixtures, (Naphthalene/Melamine based or approved super plasticisers), if used with the prior approval of engineer, labour, tools, excavation, dewatering by pumps or well points and also for cut-off chipping, all as required etc.excluding cost of Steel Reinforcement but including cost of boring with bentonite solution and temporary casing for approprite length for setting out and removal of same complete. Note: 1. The cost of carrying out Standard Penetration Test (SPT), in first pile of every pile cap at change of strata and at termination level of the pile, shall be included in the quoted rate by the contractor.2. The cost of bentonite slurry circulation, bentonite slurry tank, pumping, lining at any depth,etc. for stabilization of pile borehole shall be included in the quoted rates. No additional cost of concrete shall be reimbursed by the Department.3.Cost of RMC shall be deemed to be included in the quoted rate.

500 mm dia piles M 40 Grade Concrete in ordinary soils, murrum, soft rock and occasionally Hard Rock Boulders

500mm dia piles M 40 Grade Concrete in Hard Rock /weathered rock