Providing Underground Drainage System

Amount

Construction of rectangular man holes of internal size 0.9m x 1.05m and fixing of 560mm dia FRC Manhole frame, earth work excavation in all soils except hard rock requiring blasting but including shoring piling and timbering, pumping and dewatering and refilling the trenches, disposing off surplus earth, fixing of FRC manhole cover slab etc.complete, as directed by the departmental officers (including cost of FRC. manhole frame with cover and C.I. steps)

a) 1.50 m Depth

b) 2.00 m Depth

c) 2.5m Depth

Supplying and laying and jointing the 300mm dia D-Rex Double Wall Corrugated HDPE pipe provided for sewage disposal with thickness of 10mm and having stiffness class SN4, SN8, including necessary earth work excavation for trenches and refilling the same, well rammed and consolidated laid to proper gradiant to the alignment as directed by the departmental officers

a) at 1.5m depth

b) at 2.0m depth

c) at 2.5m depth

Sub Total