Replacement of defective central chilled water pipeline and associated works in IIT Guwahati campus

Amount

Earth work excavation by mechanical means (Hydraulic excavator) in foundation trenches or drains (not exceeding 1.5m in width or 10sqm on plan), including dressing of sides and ramming of bottoms, lift upto 1.5 m, including getting out the excavated soil and disposal of surplus excavated soil as directed, within a lead of 50 m

All kinds of soil

Filling available excavated earth (excluding rock) in trenches, sides of foundations etc. in layers not exceeding 20cm in depth, consolidating each deposited layer by ramming and watering, lead up to 50 metres.

Providing and laying of in position cement concrete of specified grade excluding the cost of centering and shuttering- All work upto plinth level

1:2:4 (1 cement: 2 coarse sand (zone-III): 4 graded stone aggregate 20 mm nominal size) for pedestial work

1:4:8 (1 cement: 4 coarse sand (zone-III): 8 graded stone aggregate 40 mm nominal size) for base of the pedestial and miscellaneous works

Providing and laying in position specified grade of reinforced cement concrete, excluding the cost of centering, shuttering, finishing and reinforcement - All work up to plinth level :

1:2:4 (1 cement : 2 coarse sand (zone-III) :4 graded stone aggregate 20 mm nominal size)

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)

Nominal concrete 1:4:8 or leaner mix (i/c equivalent design mix)

Brick work with common burnt clay F.P.S. (non modular) bricks of class designation 7.5 in foundation and plinth in

Cement mortar 1:6 (1 cement : 6 coarse sand)

Cement plaster 1:3 (1 cement : 3 coarse sand) finished with floating coat of neat cement

20 mm cement plaster

DIAL TYPE PRESSURE GAUGE Providing and fixing in position following Water line PRESSURE GAUGE as per following categories, sizes and qunatities complete with providing flanges, nut-bolts, gasket and welding arrangements: Bourden type pressure gauges of 100mm dia of suitable range shall be provided.The water pressure gauge shall be made of stainless steel grade SS304. The dial plate shall be powder coated with white colour base & the calibration shall be done in black colour. All the pressure gauges shall be complete with ball valves & SS Siphon and confirming to IS:3624 etc. complete as required as follows.

DIAL TYPE THERMOMETER Providing and fixing in position following Water line INDUSTRIAL TYPE THERMOMETER, as per following categories, sizes and qunatities complete with providing all fixing accessories: The V form thermometer shall be made of aluminium die casting with golden colour anodizing. The thermometer shall have a V groove in the body to protect the refill from the damages during the installation. The refill shall be filled with blue colour mercury. The thermometer shall be complete with brass well & the calibration of temperature shall be in Celsius & Fahrenheit etc. complete as required as follows.

Supplying & laying , testing & commissioning underground chilled water pipeline with mild steel ' C ' class pipe of size as mentioned below on exposed surface,wooden support, MS angle- clamp alongwith priming coat of steel primer as per standard specification complete as required.

200 mm dia (2 runs for Suply & Return)

125 mm dia (2 runs for Suply & Return)

Providing and fixing Chilled water pipe insulation with 75 mm thick TF quality expanded polystyrine of 20 kg/ m3 density and finaly covered with chiken wire mesh and 10 mm thick sand cement plaster in two layer and 1 layer of tarfelt on the pipes etc. complete as required

200 mm dia (2 runs for Suply & Return)

125 mm dia (2 runs for Suply & Return)

Providing and fixing in position the following butterfly valves complete as required.

350 mm dia

300 mm dia

200 mm dia

150 mm dia

125 mm dia

100 mm dia

80 mm dia

65 mm dia

50 mm dia

Providing and fixing sand cushioning of desired depth with fine sand etc. complete as required.

DIPSAN UDYOG