annual job contract for electrical maintenance in ntecl township annual job contract for electrical maintenance in ntecl township , excavating trenches of required width for pipes , cables , etc including excavation for sockets , and dressing of sides , ramming of bottoms , depth upto 1 . 5 m , including getting out the excavated soil , and then returning the soil as required , in layers not exceeding 20 cm in depth , including consolidating each deposited layer by ramming , watering , etc . and disposing of surplus excavated soil as directed , within a lead of 50 m . 2 . 10 . 1 all kinds of soil - 2 . 10 . 1 . 1 pipes , cables etc , not exceeding 80 mm dia . , excavating trenches of required width for pipes , cables , etc including excavation for sockets , and dressing of sides , ramming of bottoms , depth upto 1 . 5 m , including getting out the excavated soil , and then returning the soil as required , in layers not exceeding 20 cm in depth , including consolidating each deposited layer by ramming , watering , etc . and disposing of surplus excavated soil as directed , within a lead of 50 m 2 . 10 . 1 all kinds of soil - 2 . 10 . 1 . 2 pipes , cables etc . exceeding 80 mm dia . but not exceeding 300 mm dia