Laying of Sewer Line in Duda Colony

Excavating trenches by mechanical / manual means of required width for pipes, cables, etc. including excavation for sockets, and dressing of sides, ramming of bottoms, for all depth, 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 — All kinds of soil — Pipes not exceeding 200 mm dia — A-B sewer line (200mm dia, 75m, trench depth 1.50m)

Excavating trenches- All kinds of soil- Pipes exceeding 200 mm dia but not exceeding 300 mm sewer line (300 mm dia, 101 m, trench depth 1.50m)

Providing and laying Non Pressure NP-3 class (Medium duty) R.C.C. pipes including collars / spigot jointed with stiff mixture of cement mortar in the proportion of 1:2 (1 cement : 2 fine sand) including testing of joints etc. complete — 200 mm dia RCC Hume Pipe NP-3 — A-B sewer line (130m)

Providing and laying Non Pressure NP-3 class (Medium duty) R.C.C. pipes including collars / spigot jointed with stiff mixture of cement mortar in the proportion of 1:2 (1 cement : 2 fine sand) including testing of joints etc. complete — 300 mm dia RCC Hume Pipe NP-3.

Providing and laying cement concrete 1:5:10 (1 cement : 5 coarse sand : 10 graded stone aggregate 40 mm nominal size) up to haunches of S.W./RCC pipes including bed concrete as per standard design — 200 mm diameter pipe

Providing and laying cement concrete 1:5:10 (1 cement : 5 coarse sand : 10 graded stone aggregate 40 mm nominal size) up to haunches of S.W./RCC pipes including bed concrete as per standard design — 300 mm diameter pipe

Constructing brick masonry manhole in cement mortar 1:4 (1 cement : 4 coarse sand) with R.C.C. top slab 1:1.5:3, foundation concrete 1:4:8, inside plastering CM 1:3 12mm thick, channels in CC 1:2:4, complete as per standard design — Inside size 90x80 cm and 45 cm deep — CI cover with frame (light duty) 455x610 mm, wt ≥ 38 kg — FPS bricks class 7.5 — For 200mm sewer lines — Total 3 Nos.

Extra for depth for manholes — Size 90x80 cm — FPS bricks class 7.5 — Depth beyond 45cm to 1.50m = 1.05m extra per manhole × 3 manholes = 3.15 m total

Constructing brick masonry manhole in cement mortar 1:4 (1 cement : 4 coarse sand) with R.C.C. top slab 1:1.5:3, foundation concrete 1:4:8, inside plastering CM 1:3 12mm thick, channels in CC 1:2:4, complete as per standard design — Inside size 90x80 cm and 45 cm deep — CI cover with frame (light duty) 455x610 mm, wt ≥ 38 kg — FPS bricks class 7.5 — For 300mm sewer lines — Total 4 Nos.

Extra for depth for manholes — Size 120x90 cm — FPS bricks class 7.5 — Depth beyond 90cm to 1.50m = 0.60 m extra per manhole × 4 manholes = 2.40 m total