Laying of underground sewerage pipeline at Ramakrishnapuram area in Ward No. 73, West Zone.

Labour for cutting open BT Road surface for laying sewers

Construction of R.C.C manholes by using Sulphate Resistant Cement at various depths including earthwork excavation in Hard stiff clay, stiff black cotton etc., sand filling, laying cement concrete in C.M.1:4:8 using 40mm B.G.jelly for foundation, RCC 1:1.5:3 for side wall and base slab, fabrication, placing reinforcement and shoring & strutting charges for depths above 2m from G.L, providing PVC encapsulated steps, FRC MH frame and cover , benching and channelling with PCC 1:2:4 using 20mm HBS, refilling, etc., complete for different depths for each manhole (As per the drawing for manholes), wherever traffic is heavy and N.H roads if any. (As per separate estimate )

1m to 1.5m depth

1.5m to 2m depth

2.01m to 2.50m depth

2.51m to 3.00m depth

Barricading the trenches for one side using casuarina poles 8 to 10 cm dia , white PVC tape 15 mm wide with red strips printed in two rows, 75 mm dia red reflectors in every 3 m length, providing two no. of danger lights for every 150m length, including the cost of all materials, charges for fixing of barricading and removal of barricading after testing and filling the trench and stacking the post for reuse etc complete as directed by the officers

Earthwork excavation and depositing on bank ,within initial lead of 10m and initial lift of 2m including barricading,shoring, strutting and all other incidental works, as directed by the departmental Officers in the following classification of soil.

upto 2.00m

In hard stiff clay, stiff black cotton hard red earth, shales, murams gravel stoney earth and earth mixed with small size boulders.(SS 20B) Data 1a