DNIT Bhogpur Village for pr...

Drilling of 500mm dia bore by hydraulic rotary drilling (reverse circulation method with rock roller/diamond bit) according to ISI Specification No. 2800-1991 (Part-I) as amended up to date and modified to extent of the specification attached with this schedule of items of work in all inkds of soils and boulders except rocky strata including the cost of all consumable stroes, fuel, oil, soil stabilizing material and transportation of rig and other accessories to the to the site of proppsed bore and back including cost of lowering of all size of casing pipe while boring and extraction gthe same against earth friction etc. complete to the satisfaction of the Engineer-in-Charge.