Details: drilling of perfectly vertical bore hole of a diameter sutable to receive 150mm nominal diameter casing pipe upto desired depth below ground level inclusive of the labour charges for transporting, lowering and fixing of 150mm nominal diameter m.s./g.i./upvc casing pipe inside the bore hole including all works pertaining to drilling such as transportation, installation and removal of drilling machine etc. complete (a) in all types of collapsible strata consisting of soils, clays, sand, moorum, gravel, boulder etc. (i) from 0 to 19.55 m depth below g.l. (phe.sor 21.3 page315) (b) in all types of rock (i) from19.55 m to 19.70 mm depth below g.l. (phe.sor 21.3.2 page315) drilling of perfectly vertical bore hole of 150 m.m.diameter up to desired depth below ground level in all types of rock including all works pertaining to drilling such as transportation, installation and removal of drilling machine etc. complete. from 19.70 m to 87.70 mm depth below g.l. (phe.sor 21.4 page315) drill
Sector: Water supply and Sewerage