Construction of stepped main open drain and collection drains to divert the storm water from the newly fenced area near Admin block and its upper and lower slopy terrains to main drain at IISER campus Vithura

Amount

Earth work in excavation by mechanical means (Hydraulic excavator)/ manual means over areas (exceeding 30 cm in depth, 1.5 m in width as well as 10 sqm on plan) including getting out and disposal of excavated earth lead upto 50 m and lift upto 1.5 m, as directed by Engineer-in charge

All kinds of soil

Earth work in excavation by mechanical means (Hydraulic excavator) / manual means in foundation trenches or drains (not exceeding 1.5 m in width or 10 sqm on plan), including dressing of sides and ramming of bottoms, lift up to 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

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

Foundations, footings, bases for columns, walls, etc

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

1:5:10 (1 cement : 5 coarse sand (zone-III): 10 graded stone aggregate 40 mm nominal size).

1:3:6 (1 Cement : 3 coarse sand (zone-III) derived from natural sources : 6 graded stone aggregate 20 mm nominal size derived from natural sources)

Random rubble masonry with hard stone in foundation and plinth including levelling up with cement concrete 1:6:12 (1 cement : 6 coarse sand : 12 graded stone aggregate 20 mm nominal size) upto plinth level with :

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

Providing and Constructing Solid Cement Concrete block masonry in Cement Mortar 1:6 ( 1 cement : 6 coarse sand) using factory made, load bearing, approved quality Cement Concrete blocks of specified size, Grade A (3.5) as per IS:2185 (Part-I) 2005,Density of blocks not less than 1500 kg/cum. Minimum average Compressive strength of units 3.5N/sqmm and Minimum strength of individual units 2.8N/sqmm, set to level plumb including setting in position, providing scaffolding, curing, raking out joints wherever required etc., complete with all leads and all as per specification and directions of the Engineer-in-charge.

IN SUPERSTRUCTURE UPTO FLOOR V LEVEL For 150 mm thick walls

12 mm cement plaster of mix :

1:6 (1 cement: 6 fine sand)

THOMAS V T

JASEEF V P