Haldwani Kathgodam Sewerage Scheme Part 2

Amount

Excavation of earth below G.L. by manually or by mechanical means for laying of Sewers, Manholes, Gully pits, Chambers etc. in soil i/c extra excavation below inverts, trimming and dressing of sides, levelling and back filling of trenchesby excavated earth in 20cm layers, watering and ramming the samei/c removal of surplus earth or other dismantled material upto a distance of 50 meters from the centre of trenches and cleaning of sites properly after completion of the work. Excavation by mechanical means shall be restricted upto 90 cm above invert levels at every point of excavation. Excavation from invert levels upto 90cm above shall be done manually only.

Soil mixed with moorum, shingle & kankar etc. (85% of relevant quantity)

0.00m to 1.50m B.G.L.

1.50m to 3.00m B.G.L.

Medium rock (15% of relevent quantity)

0.00m to 1.50m B.G.L.

1.50m to 3.00m B.G.L.

Provide & fixing of Open Timbering ( covering 1/3rd of surface area by planks), in trenches for the following depths below ground level consisting of 40mm thick approved country wood planks for poling board, 125mm x 75mm Indian Salwood walers and 100mm dia Sal wood ballies for struts at 1.50m intervali/c removal after laying of sewer (both sides of trenches will be taken as one side for the purpose of payments & measurements i.e. area equal to length x depth of trenches. Dismantled timbering materials will be the property of the contractor.

Depth upto 3.00m, below G.L.

Supply & Laying-Jointing of following dia R.C.C. S&S pipes with rubber gaskets to the site of work, lowering the same into trenches below ground level true to alignment, making the joints with rubber gaskets and with necessary spun yarn soaked in bitumen jointing with 1:2 cement mortar in coarse sand including cost of all jointing materials and testing etc. complete but excluding excavation and back filling of trenches upto ground level. (Class - NP3)

150mm dia

0.00m to 1.50m B.G.L.

1.50m to 3.00m B.G.L.

Provide all materials, labour, T&P etc. and construct brick masonry circular manhole i/c supply and fixing of foot steps & extra heavy duty manhole covers as per Jal Nigam specifications and drawings.

upto 1.65m B.G.L.

900mm internal dia

upto 3.00m B.G.L.

1200mm internal dia

Variation in depth of shaft to regulate the cost of manhole.

upto 1.65m B.G.L.

900mm internal dia

upto 3.00m B.G.L.

1200mm internal dia

Provide all materials, labour, T&P etc. and construct brick masonry house connecting chambers as per Jal Nigam specifications and drawings.

0.90 x 0.60 x 1.50m internal size

Variation in depth of shaft tp regulate the cost of house connecting chambers.

0.00m to 1.50m B.G.L.

Carting and recarting of excavated earth in the narrow lanes, in which excavated earth is not possible to collect the earth above the trenches assuming 10% of total excavated earth. (upto 5km @ Rs. 15.33/qtl.)

= 1.65 x 10 x 2 x 17.10 = Rs. 564.30 per cum

Disposal of surplus earth upto a distance of 8.0 Km including loading, transporting, unloading to approved dumping ground or as approved by Engineer-in-charge, beyond 50 m initial lead, for all leads including all lifts involved.

Shifting of water supply lines, telephone lines, electrical cable and other utility services falls in alignment of sewer line. It also includes the repair and reinstatement of damaged services.

Demolishing cement concrete manually / by mechanical means including disposal of material within 50 meters lead as per direction of Engieer-in-charge. Nominal concrete 1:3:6 or richer mix

Dismantling manually/ by mechanical means including stacking of serviceable material and disposal of unserviceable material within 50 metres lead as per direction of Engineer-in-charge :

Bituminous road

Making connection of drain or sewer line with existing manhole including breaking into and making good the walls, floors with cement concrete 1:2:4 mix (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size) cement plastered on both sides with cement mortar 1:3 (1 cement : 3 coarse sand), finished with a floating coat of neat cement and making necessary channels for the drain etc. complete.

For pipes 100 to 250 mm diameter

Repair of drains, damaged at the time of laying of sewer lines.

U Type Drain

K.C. Drain

Type A PPCC 1:4:8 Bedding below pipe

0.00 m to 1.50m B.G.L

Construction of granular sub-base by providing well graded material, spreading in uniform layers , mixing by mix in place method and compacting the material to achieve the desired density. Using gravel mix soil

0.00m to 1.50m B.G.L.

1.50m to 3.00m B.G.L. (@ 3% extra for depth)

Providing and laying in position cement concrete of 1:1½:3 (1 Cement: 1½ coarse sand : 3 graded stone aggregate 20 mm nominal size) and finished by floating, brooming with wire brush etc. complete as per specifications and directions of Engineerincharge. Reinstatement of CC Road.

Reinstatement of Roads :-

Bituminous Road

Provision for barricading in two rows and necessary diversion of paths and where as necessary with the help of ballies, ropes, flags, signals and light signals etc. as per requirement. Including supply of all material, T&P, etc complete.

KISHOR SINGH MEHRA