Details: replacement of damaged hdpe water main pipes with di pipes at astalakshmi nagar (phase-ii) in depot 147, area xi. dismantling of concrete / asphaltic road surfaces using power breaker supplying and laying of d.i. pipes including earthwork excavation for trenches in hard stiff clay, blackcotton, hard red earth, shales, murams, gravel, stoney earth and earth mixed with small size boulders and hard gravelly soil depositing the earth on banks with initial lead of 10 m and initial lift of 2m carting the pipes from any of the board’s stores to the site of work lowering into the trenches, aligning, refilling (including backfilling) the trenches with excavated soil, watering and ramming to consolidation, etc., complete for the pipes of following diametres (class k9) a) 100mm dia di pipe at 1.50m depth b) 250mm dia di pipe at 1.50m depth providing iron barricading of size 2.50 m width and 1.75 m height using 40x40x4 mm angle for outer frame supports, 25 x 25 x 3 mm angle for inner frame support
Sector: Water supply and Sewerage