Design, Providing of Sewer network, Constructing, Erecting and Commissioning of intermediate Sewage Pumping Stations, Lifting Stations, etc., Phase II Zone 4 for Wellington Cantonment Board, Wellington,TamilNadu.

PART A - (1) Providing Laying and Commissioning of Sewer Collection Network including house sewer connection, Nullah, roads railway crossing using Trenchless Technology and Road Restoration in Cantonment Board

Earth Work Excavation

Earth work excavation for foundation & depositing on bank with an initial lead of 10 m & lift of 2 m for depths in hard stiff clay, stiff black cotton, hard red earth mixed with small sized boulders & hard gravely soil including dewatering of water as and when required, barricading with safety lamps etc all complete as per standard specification as directed by the Departmental Engineer.

a) For 0 to 2 m depth

Earth work excavation for foundation & depositing on bank with an initial lead of 10 m & lift of 2 m for depths in soft disintegrated Rock when required, barricading with safety lamps etc all complete as per standard specification as directed by the Departmental Engineer.

For 2 to 3 m depth

Earth work excavation and depositing on bank with initial lead of 10 m and initial lift of 2 m in medium rock and dense medium rock not required blasting as directed by Departmental engineer.

Shoring & strutting the sides of trench when depth of excavation exceeds 2 m in loose soil including cost of labour charges for installation & removal of planks & scantlings etc or using steel sheet plate complete & as directed by the Engineer-in-Charge.

a) For 2 to 3 m Depth

Refilling the trenches with suitable excavated earth available along the alignment after the pipes & specials are laid, jointed & tested in layers & watering, ramming & consolidation directed by the Engineer-in-Charge.