ADDITION/ALTERATION CUM SPL REPAIR TO SEWAGE SYSTEM NEAR TYPE IV P53 AND TYPE V P162 QTRS AREA AT SAGAR COMPLEX OF NPOL KOCHI

Dismantling of old 100 mm diameter 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 complete all as specified as directed by Engr-in -Charge.

Providing and laying cement concrete 1:5:10 (1 cement : 5 coarse sand : 10 graded stone aggregate 40 mm nominal size) all-round S.W. pipes including bed concrete as per standard design 100 mm diameter S.W. pipe complete all as specified as directed by Engr-in -Charge.

Providing and laying non-pressure NP2 class (light duty) R.C.C. pipes of 100 mm dia. 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 all as specified and directed. Note :- Laying of sewage line in running sewage water & temporary diversion /plugged of existing sewage line & bailing of sewage water is the responsibility of contractor and the rate for the same is seems to be included in the contract)

Dismantling of old (SGSW, AC or RCC) pipes 150 mm diameter 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 : complete all as specified as directed by Engr-in -Charge.

Providing and laying cement concrete 1:5:10 (1 cement : 5 coarse sand : 10 graded stone aggregate 40 mm nominal size) all-round S.W. pipes including bed concrete as per standard design 150 mm diameter S.W. pipe complete all as specified as directed by Engr-in -Charge.

Providing and laying non-pressure NP2 class (light duty) R.C.C. pipes of 150 mm dia. 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 all as specified and directed. Note :- Laying of sewage line in running sewage water & temporary diversion /plugged of existing sewage line & bailing of sewage water is the responsibility of contractor and the rate for the same is seems to be included in the contract)

Cleaning and desilting of gully trap chamber, including removal of rubbish mixed with earth etc. and disposal of same, all as per the direction of Engineer-in-charge complete all as specified and directed.

Cleaning of chocked sewer line by diesel running vehicle mounting hydraulic operated high pressure suction cum jetting sewer cleaning machine fitted with pump having 4000 litres suction capacity and 6000 litres water jetting tank capacity including skilled operator, supervising engineer etc. for cleaning and partial desilting of manholes and de-chocking of sewer lines. De-chocking and flushing of sewer line from one manhole to another by high pressure jetting system of 2200 PSI for sewer line from 150mm dia upto 300mm all as spd and directed by Engr-in-Charge. Note: All work to be carried out under foul condition.

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 all as spread and directed by the Engr-in-charge. Note: All works to be carried out under foul condition

Providing and fixing Chlorinated Polyvinyl Chloride (CPVC) pipes, 80 mm nominal dia having thermal stability for hot & cold water supply including all CPVC plain & brass threaded fittings. This includes jointing of pipes & fittings with one step CPVC solvent cement, trenching, refilling & testing of joints complete all as spd and directed by the Engr-in-charge. Note: All works to be carried out under foul condition.

Demolishing brick work manually/ by mechanical means including digging of pit including stacking of serviceable material and disposal of unserviceable material within 50 metres lead as per direction of Engineer-in-charge.

M&L for 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 (1cement : 1.5 coarse sand (zone-III) : 3 graded stone aggregate 20mm 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 for 150mm internal dia. with Sewer bricks conforming to IS : 4885

Providing and laying Non Pressure NP-3 class (Medium duty) R.C.C. pipes including collars/spigot jointed with stiff mixture of cement mortar in the proportion of 1:2 (1 cement : 2 fine sand) including testing of joints etc. complete all as specified and directed.

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