Construction of Trunk Sewerage system in Bhoomi Vikas, Grihsthan Evam Bazar and Poorak Yojna (Green Field Township) Ayodhya.

Excavation in following depth below ground level for laying sewers, manholes, gully, pits, chambers, sumps etc. in ordinary soil (earth, sand, loam and clay) including cutting of joints pits, trimming, dressing leveling, refilling of trenches in 20 cm, layers watering sand ramming the same including removal of surplus earth or other dismantled materials up to a distance of 50 metres from the centres of trenches as per direction of E/I.

Upto 1.50 m. BGL

1.5 to 3.0 m. BGL

3.0 to 4.50 m. BGL

4.50 to 6.0 m. BGL

6.0 to 7.50 m. BGL

Add extra over item 1 above for bailing out or pumping out sub-soil water to keep trenches dry during excavation of trenches other constructions and laying of sewers.

1.50 to 3.0 m. BGL

3.0 to 4.50 m. BGL

4.50 to 6.0 m. BGL

6.0 to 7.50 m. BGL

Providing and fixing close timbering in trenches for depths up to 3.0 m. and 3.0 m. to 6.0 m. below ground level consisting of 40 mm thick approved country wood planks for polling boards, 125 m.m. x75 m.m. Country wood wallers and 100 mm dia Sal ballies for strut at 1.50 m. c/c including removal after laying of sewer (both sides of trenches will be taken as one side for the purpose of payments and measurements i.e. area equals to length x depth of trench). Dismantled timbering materials will be the property of the contractor.

0.0 to 3.0 m.BGL

3.0 to 6.0 m. BGL

Above 6.0 m. BGL

Same as item no. 3 above but timbering left in trenches (used timbering)

0.0 to 3.0 m. BGL

3.0 to 6.0 m. BGL

Above 6.0 m. BGL

Provide and fix open timbering (covering 1/3rd of surface are by planks) in trenches for the depth upto 3.0 m. below G.L. consisting of 40 mm thick approved country wood planks for poling boards 125 m.m. x 75 m.m. Country wood walers and 100 m.m. dia Sal ballies for struts at 1.50 m c/c including removal after laying of sewer both sides of trenches will be taken as one side for the purpose of payments and measurements i.e area equals to length x depth of trench. Dismantled timbering materials will be the property of the contractor.

0.0 to 3.0 m. BGL

Supply of following nominal dia R.C.C. hume pipes NP-3 class ISI marked tested as per the relevant I.S. code, including rubber ring for jointing the pipe including all taxes, charges, cartage, loading, unloading, stacking, etc. upto the store of work.

Carting of following nominal dia R.C.C. hume pipes (NP3 class) and specials from store to the site of work, lowering the same into trenches in depths given below, placing in position true to alignment and gradient, make the joints with rubber ring, filling the joint with necessary spun yarn soaked in bitumen and/or with 1:2 cement mortar in coarse sand as per direction of engineer incharge, including excavation of earth below invert level of pipe, cost of all jointing materials, testing etc. complete but excluding excavation and refilling of trenches from ground level to the invert level of pipes.

300 mm dia Upto 1.50 m. BGL

300 mm dia 1.50 to 3.0 m. BGL

300 mm dia 3.0 to 4.50 m. BGL

350 mm dia 1.5 to 3.0 m. BGL

350 mm dia 3.0 to 4.50 m. BGL

400 mm dia Upto 1.50 m. BGL

400 mm dia 1.5 to 3.0 m. BGL

400 mm dia 3.0 to 4.50 m. BGL

450 mm dia 1.5 to 3.0 m. BGL

450 mm dia 3.0 to 4.50 m. BGL

500 mm dia 1.5 to 3.0 m. BGL

500 mm dia 3.0 to 4.50 m. BGL

600 mm dia 1.5 to 3.0 m. BGL

600 mm dia 3.0 to 4.50 m. BGL

700 mm dia 3.0 to 4.50 m. BGL

700 mm dia 4.50 to 6.0 m. BGL

800 mm dia 3.0 to 4.50 m. BGL

800 mm dia 4.50 to 6.0 m. BGL

900 mm dia 3.0 to 4.50 m. BGL

900 mm dia 4.50 to 6.0 m. BGL

1000 mm dia 4.50 to 6.0 m. BGL

1200 mm dia 4.5 to 6.0 m. BGL

Providing and fixing in position precast RCC Manholes of following internal dia. having RCC eccentric corbelled portion and circular rings/risers designed according to IS 456, IS 3370 and other relevant IS codes for IRC class AA loading, made of M40 grade concrete, the circular ring having provision for 4 nos. house connections, having SFRC foot steps inside-staggered in two vertical rows having c/c distance 300 mm horizontally and vertically, the top footrest being at 450 mm below manhole cover and lowest not more than 300 mm above the benching, and the reinforcement shall be of TMT bars conforming to IS 1786, including necessary excavation, construction of in-situ 200 mm thick base RCC raft/platform, RCC ring supporting the precast rings/risers and CC benching, all in M20 grade concrete, over 75 mm thick M15 grade PCC in accordance with the structural design/drawing to be provided after vetting by a Govt. Engg. College/IIT and it shall also include shop/lab checking/testing of the product and also providing and fixing SFRC Heavy Duty Manhole frame and cover as per IS 12592, including lowering of various components in the excavated pit at site, assembling/installation and jointing them properly in position, hydraulic testing including material, labour and T&P all complete to the satisfaction of the engineer in charge.(Thickness of rings/risers is taken as 125 mm. For variation in design thickness, the extra cost shall be payable accordingly).

1200 mm internal dia Manhole For Manhole height of 1.83 m +OD of pipe from IL

Regulating shaft height above 1.83 m+OD of pipe from IL

1500 mm internal dia Manhole For Manhole height of 2.13 m +OD of pipe from IL

Regulating shaft height above 2.13 m +OD of pipe from IL

Beddings for laying RCC pipes:-

Providing and laying in position cement concrete of specified grade excluding the cost of centring and shuttering - All work upto plinth level 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size) (for class Ab bedding)

Providing and laying in position specified grade of reinforced cement concrete excluding the cost of centring, shuttering, finishing and reinforcement - All work upto plinth level : 1:1.5:3 (1 cement : 1.5 coarse sand : 3 graded stone aggregate 20 mm nominal size) (for Class Ac bedding)

Same as above item no. 9.2 but in 1:1.5:3 (1 cement : 1.5 coarse sand : 3 graded stone aggregate 20 mm nominal size) (for Class Ad bedding)

Centring and shuttering including strutting, propping etc. and removal of form work for Foundations, footings, bases for columns.

Reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding all complete. Mild steel and Medium Tensile steel bars (for Ac/Ad beddings)

Providing and laying in position cement concrete of specified grade excluding the cost of centring and shuttering - All work upto plinth level 1:5:10 (1 cement : 5 coarse sand : 10 graded stone aggregate 40 mm nominal size)

Providing and laying compacted granular material (comprising aggregate 20 mm and coarse sand in 2:1 ratio or as directed by E/I. (for Ad type)

Extra for laying concrete in or under water and/or liquid mud including cost of pumping or bailing out water and removing slush etc. complete. Note-The quantity will be calculated by multiplying the depth measured from subsoil water level up to centre of gravity of concrete under subsoil water level with quantity of concrete in cum executed under subsoil water. The depth of centre of gravity shall be reckoned correct to 0.1m (0.05m or more shall be taken as 0.1m and less than 0.05 shall be ignored). 1:2:4 and 1:1.5 : 3 (for all classes of bedding)

Same as above item no. 14.1 but in 1:5:10 (1 cement : 5 coarse sand : 10 graded stone aggregate 40 mm nominal size) (for all classes of bedding)