Public Health Engineering Department Tender

Mobilization and transportation of the rig machine and its accessories and other materials etc to the site.

Drilling a bore hole in DTH process through any kind of soils and rocks in overburden suitable for lowering and fitting fixing of 200 mm outer dia casing pipe(casing pipe may be supplied departmentally) up to an average depth of 25±5 mtrs. and subsequently 165 mm diameter boring through any kind of rocky formation upto a total depth of 170 mtrs (for dry drilling or sufficient water not achieved drilling may be continued up to 200 Mtr) including all other works necessary for boring and lowering fitting fixing of MSERW /UPVC casing pipes suitable for 165mm dia drilling in rock bed and grouting the same as per direction of E.I.C .including (in case of MSERW casing pipes) the cost of welding of M.S.E.R.W casing pipes and welding the top of the casing pipe with one 8mm thick MS cover plate(with supply and delivery of that plate) Necessary arrangement to be made for proper security of bore hole. Note- MSERW/UPVC casing pipes should be properly inserted or lowered in overburden zone for proper RBTW formation, in case of collapse in borehole payment will be done for clear measurable depth only. a) 0 to 25 Mtrs/Over burden which one is more

b) 25 mtr to 170 mtrs and above