18/EEC/BSNL/CD/BGL/2025-26

Amount

Demolishing cement concrete manually/ by mechanical means including disposal of material within 50 metres lead as per direction of Engineer - in - charge.

Nominal concrete 1:3:6 or richer mix (i/c equivalent design mix)

Demolishing brick work 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.

In cement mortar

Taking out C.I. cover with frame from R.C.C. top slab of manholes of various sizes including demolishing of R.C.C. work manually/ by mechanical means and stacking of useful materials near the site and disposal of unserviceable materials within 50 metres lead as per direction of Engineer-in-charge.

Excavating trenches of required width for pipes, cables, etc including excavation for sockets, and dressing of sides, ramming of bottoms, depth up to 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 :

All kinds of soil

Pipes, cables etc. exceeding 80 mm dia. but not exceeding 300 mm dia

Providing and laying in position cement concrete of specified grade excluding the cost of centring and shuttering - All work up to plinth level :

1:2:4 (1 cement : 2 coarse sand(zone-III) derived from natural sources : 4 graded stone aggregate 20 mm nominal size derived from natural sources).

1:4:8 (1 Cement : 4 coarse sand (zone-III) derived from natural sources : 8 graded stone aggregate 40 mm nominal size derived from natural sources).

1:5:10 (1 cement : 5 coarse sand (zone-III) derived from natural sources : 10 graded stone aggregate 40 mm nominal size derived from natural sources)

Repairs to plaster of thickness 12 mm to 20 mm in patches of area 2.5 sq.meters and under, including cutting the patch in proper shape, raking out joints and preparing and plastering the surface of the walls complete, including disposal of rubbish to the dumping ground, all complete as per direction of Engineer-in-charge.

With cement mortar 1:4 (1 cement : 4 fine sand).

Providing and fixing square-mouth S.W. gully trap class SP-1 complete with C.I. grating brick masonry chamber with water tight C.I. cover with frame of 300 x300 mm size (inside) the weight of cover to be not less than 4.50 kg and frame to be not less than 2.70 kg as per standard design:

a) 100x100 mm size P type - With common burnt clay F.P.S. (non modular) bricks of class designation 5.0

Dismantling of old S.W. pipes including breaking of joints and bed concrete stacking of useful materials near the site within 50 m lead and disposal of unserviceable materials into municipal dumps :

100 mm diameter

Constructing brick masonry manhole in cement mortar 1:4 ( 1 cement : 4 coarse sand ) with R.C.C. top slab with 1:1.5:3 mix (1 cement : 1.5 coarse sand (zone-III) : 3 graded stone aggregate 20 mm nominal size), foundation concrete 1:4:8 mix (1 cement : 4 coarse sand (zone-III) : 8 graded stone aggregate 40 mm nominal size), inside plastering 12 mm thick with cement mortar 1:3 (1 cement : 3 coarse sand) finished with floating coat of neat cement and making channels in cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size) finished with a floating coat of neat cement complete as per standard design :

Inside size 90x80 cm and 45 cm deep including C.I. cover with frame (light duty) 455x610 mm internal dimensions, total weight of cover and frame to be not less than 38 kg (weight of cover 23 kg and weight of frame 15 kg) :

With common burnt clay F.P.S. (non modular) bricks of class designation 7.5

Extra for depth for manholes :

a) Size 90x80 cm With common burnt clay F.P.S. (non modular) bricks of class designation 7.5

Providing M.S. foot rests including fixing in manholes with 20x20x10 cm cement concrete blocks 1:3:6 (1 cement : 3 coarse sand : 6 graded stone aggregate 20 mm nominal size) as per standard design :

With 20x20 mm square bar

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.

Dismantling of manhole including R.C.C. top slab, C.I. cover with frame, including stacking of useful materials near the site and disposal of unserviceable materials within 50 m lead as per direction of Engineer-in-Charge :

Rectangular manhole 90x80 cm and 45 cm deep.

P/F SWR grade fittings of approved make and manufacture.

110 mm dia bend

160mm dia bend

Disposal of building rubbish / malba / similar unserviceable, dismantled or waste materials by mechanical means, including loading, transporting, unloading to approved municipal dumping ground or as approved by Engineer-in-charge, beyond 50 m initial lead, for all leads including all lifts involved.

Providing and laying under ground low density foamed cellular wall PVC pipes and couplers conforming to IS:16098 (PART-1) including fixing pipe ends with solvent based cement adhesive in proper alignment complete as directed. (Note: The joint shall be tested for leakage before covering with infill material over the pipes)

(a) 160mm dia PVC pipe of SN4 class, self fit type

(b) 110mm diameter PVC pipe of SN4 class, self fit type

Charges for getting permission from BBMP to cut the road for connecting sewage line from E15 SQ and W-block to BWSSB sanitary line in 41st cross and charges for getting permission from BWSSB, for making connection etc., complete as per the direction of Engineer in charge.

Cutting tree roots encountered in trench of girth from 10cm to 30 cm using carpenters saw, power cutter saw and axe wherever required complete as directed and disposal of debris to a lead of 50m.

Extra charges for laying concrete and SWR pipe under foul condition etc complete as directed by the Engineer in charge.

Dismantling of Gully trap including C.I. cover with frame, including stacking of useful materials near the site and disposal of unserviceable materials within 50 m lead as per direction of Engineer-in-Charge.

12 mm cement plaster of mix :

1:6 (1 cement: 6 fine sand)

Centering and shuttering including strutting, propping etc, and removal of form for

Foundations, footings, bases of columns, etc. for mass concrete

Deduct for not providing C.I. cover under the relevant Item of this agreement with CI frame (light duty) 455x610 mm internal dimensions , total weight of cover and frame to be not less than 38 kg (weight of cover 23 kg and weight of frame 15 kg)

Extra for supplying FRP MANHOLE cover LD class-2.50T (THERMO-DRAIN /NEXGEN or equivinalent) with frame of size-710x535mm and opening size- 450 x 600mm in manholes under the relevant Item of this agreement

Credit to Contractor dismantled, damaged cast iron section etc complete as directed by the Engineer in charge.

K V DEVARAJ (BID ID -889345)