T/M of S W Drains in R-I Division during 2025-26.

Dismantling stone slab flooring laid in cement mortar including stacking of serviceable material and disposal of unserviceable material within 50 metres lead.

Demolishing cement concrete manually/ by mechanical means including disposal of material within 50 metres lead as per direction of Engineer - in - charge. (a) Nominal concrete 1:4:8 or leaner mix (i/c equivalent design mix)

Constructing brick masonry bell mouth silt chamber type with FPS bricks of class designation 7.5 in cement mortar 1:4 (1 cement : 4 coarse sand) of inside size 45X50X65 cm deep channel side wall to be 50 cm deep below channel level over which 3 number precast cement concrete cube of size 15X15X15 cm should be fixed to form opening of bell mouth under the SFRC cover and frames of size 500X450 mm inside opening with one edge rounded off to match the profile of cement concrete kerb stone including laying bed concrete 15 cm thick 1:4:8 (1 cement : 4 coarse sand : 8 graded stone aggregate 40 mm nominal size) and 50 mm thick cement concrete 1:2:4 (1 cement : 2 coarse sand ; 4 graded stone aggregate 20 mm nominal size) and frame to be fixed on the three walls of size 10 cm wide & 65mm thick of chamber having 12 mm thick cement plaster in side the chamber with cement mortar 1:3 (1 cement : 3 coarse sand) finished with a floating coat of neat cement complete up to entire satisfaction of Engineer-in-Charge (including necessary excavation in foundation and refilling etc. complete).

Constructing brick masonry manhole ( silt chamber type) of size 120X90X120 cm deep with modular extruded burnt fly ash clay sewer bricks confirming to I.S.:4885 in cement mortar 1:4( 1 Cement : 4 coarse sand) 15 cm thick RCC top slab with 500mm dia opening with cement concrete 1:2:4 ( 1 cement :2 coarse sand : 4 graded stone aggregate 20mm nominal size) reinforced with a 18.92 Kg/each TMT bars, 20 cm foundation cement concrete 1:4:8 ( 1 cement :4 coarse sand : 8 graded stone aggregate 40 mm nominal size) inside plaster 12mm thick with cement mortar 1:3 ( 1 cement : 3 coarse sand ) finished with a floating coat of neat cement and providing 50mm thick cement concrete of 1:2:4 ( 1 cement :2 coarse sand : 4 graded stone aggregate 20mm nominal size ) with neat cement punning inside the manhole complete as per standard design. difference of 30cm shall be kept between invert level of pipe and manhole bottom excluding the cost of SFRC manhole cover and frame 500mm dia which be paid separately. Depth shall be measured from bottom of manhole to top of RCC slab.

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 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

Providing and laying non-pressure NP2 class (light duty) R.C.C. pipes with collars jointed with stiff mixture of cement mortar in the proportion of 1:2 (1 cement : 2 fine sand) including testing of joints etc. complete :(a) 300 mm dia. R.C.C. Pipe

Filling available excavated earth (excluding rock) in trenches, plinth, sides of foundations etc. in layers not exceeding 20cm in depth, consolidating each deposited layer by ramming and watering, lead up to 50 m and lift upto 1.5 m.

Extra for depth of manholes: size 120x90cm (a) With common burnt clay F.P.S. (non modular) bricks of class designation 7.5

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shutting all work Up to plinth level. (a)1:5:10 ( 1 Cement: 5 coarse sand Manufacture sand upto 100%): 10 graded stone aggregate 20mm nominal size (Recycled aggregate upto 100%)

Laying 40 mm thick fine dressed sand stone flooring over 20 mm (average) thick base of cement mortar 1:5 (1 cement : 5 coarse sand) including pointing with cement mortar 1:2 (1 cement: 2 stone dust) with an admixture of pigment to match the shade of stone.(Sand stone shall be provided free of cost at site) a)Sand stone (Red/White)