NIT No. 09/2022-23/BCD/BLY

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

Dismantling G.I. pipes (external work) including excavation and refilling trenches after taking out the pipes, manually/ by mechanical means including stacking of pipes within 50 metres lead as per direction of Engineer-in-charge :

15 mm to 40 mm nominal bore

Above 40 mm nominal bore

Credit for:

Unserviciable GI Pipes/Fiitings

Uncleaned FPS (Non modular) bricks of class designation 7.5 recieved from demolishing of brick work.

Old unserviceable gun metal/brass gate valve with CI wheel.

Providing and laying in position cement concrete of specified grade excluding the cost of centering 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)

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

Half brick masonry with common burnt clay F.P.S. (non modular) bricksof class designation 7.5 in foundations and plinth in :

Cement mortar 1:4 (1 cement : 4 coarse sand)

12 mm cement plaster of mix :

1:6 (1 cement: 6 fine sand)

Cleaning of under ground sump, Over Head R.C.C. Tank (independent staging) including disposal of slit and rubbish, all as per direction of Engineer-in-Charge. The cleaning shall consist following operations:- (i) Tank shall be emptied of water by pumping & bottom shall be cleaned of slit and other deposits.(ii) Entire surface area of the sump shall then scrubbed thoroughly with wire brush etc. and pressure washed with water.(iii) Chlorination of RCC internal surface by liquid chlorine.(iv) The treated surface shall be dried using air jetting and all loose particles shall be removal from the surface.(v) Finally the surface shall be treated with ultraviolet radiation etc. as per direction of Engineer-in-Charge.

Cleaning of sewer line and disposal of sludge out of compound and as per direction of the Engineer-in-charge.

Cleaning of under ground GI pipe line of specified dia with the help of steel rod or rigid cables fitted with steel or hard fibre bottle brush at its end in order to remove scalling, rusting or silting inside the pipe completely and refixing the pipe in position including replacing damaged GI fittings viz. sockets, elbow, tees, nipple etc. wherever required and cost of cutting and threading the pipe at required length to enable rodding inside the pipe complete as per direction of Engineer-in-charge. (Note: trenching, dismantling G.I. pipes, providing new unions and refilling the treches shall be paid separately)

50 mm dia nominal bore pipe.

32 mm dia nominal bore pipe.

15 mm dia nominal bore pipe.

Providing and fixing gun metal gate valve with C.I. wheel of approved quality (screwed end) :

25 mm nominal bore

32 mm nominal bore.

50 mm nominal bore

Providing and fixing G.I. Union in existing G.I. pipe line, cutting and threading the pipe and making long screws including excavation, refilling the earth or cutting of wall and making good the same complete wherever required :

50 mm nominal bore.

Cleaning sewer manholes of any size including removal of accumulated sludge and other refuses, disposing off same outside the compound at authorised municipal dump or out of township complete as per direction of the Engineer-in-charge.