bids are invited for custom bid for services - provision of construction of equipment room at unit hq of 4tac af--testing of safe bearing capacity of soil & submission of detailed report in quintuplicate consisting of following detailed here under:-)mobilization including shifting from one bore hole to another bore hole boring of mechanical spt drilling equipment boring/drilling nx, hx dia boreholes through any type of soil/rock strata, collection of disturbed & undisturbed soil samples at 1.5m or closer intervals on change of strata using sampling equipment as per is 1890 & undertaking standard penetration test as per is: 2131 or dcpt (dynamic cone penetration test) depending upor the soil strata as per is: 10042 for the following scope:-(i) 150mm dia boreholes of 10 mtr depth or refusal whichever comes earlier hole 01 nos. ( 10^ * 1 = 10mtr )(ii) 01 nos trial pit size 1.2 * 1.2 * 3 mtr (1 * 3) = 3mtr(iii) transportation charges up and down at site, mobilization of manpower and equipment etc for the same(iv) soil investigation shall be carried out as per is 1892-1972 (reaffirmed 2002). undisturbed soil samples shall be collected as 1.5m interval and at every change of strata spt tests shall also be done at 1.5m interval of every change of strata spt shall be done till n value of 50 or refusal whichever is earlier, bore hole shall be 150 mm as per is-1892 (clause 3.6.5.3) drilling for 3.0 m depth inside the rock is essential to ensure that boulders or layers of cemented soil are not mistaken for rock. soil investigation report shall include the following details:-