tender for arm & cleaning of sewer lineat tpt bn for the year 2023-24.; 1 dismantling of old 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 :300 mm diameter. 2 dismantling of manhole including r.c.c. top slab, c.i. cover with frame, including stacking of useful materials near the site and disposal of unserviceable materials within 50 m lead as per direction of engineer-in-charge:rectangular manhole 120x90 cm and 90 cm deep 3 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. 4 providing and laying cement concrete 1:5:10 ( 1 cement : 5 coarse sand : 10 graded stone aggregate 40 mm nominal size ) up to haunches of s.w. pipes including bed concrete as per standard design :300 mm diameter s.w. pipe 5 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 :300 mm dia. r.c.c. pipe 6 constructing masonry chamber 90x90x100 cm inside, in brick work in cement mortar 1:4 ( 1 cement : 4 coarse sand ) for sluice valve, with c.i. surface box 100 mm top diameter, 160 mm bottom diameter and 180 mm deep ( inside ) with chained lid and rcc top slab 1:2:4 mix ( 1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size ) , i / c necessary excavation, foundation concrete 1:5:10 ( 1 cement : 5 fine sand : 10 graded stone aggregate 40 mm nominal size ) and inside plastering with cement mortar 1:3 ( 1 cement : 3 coarse sand ) 12 mm thick, finished with a floating coat of neat cement complete as per standard design : 7 12 mm cement plaster finished with a floating coat of neat cement :1:3 ( 1 cement : 3 fine sand ) 8 cleaning of chocked sewer line by diesel running vehiclemo unting 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 dechocking of sewer lines. dechocking 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 dia for all depth. 9 providing and fixing in position pre-cast r.c.c. manhole cover and frame of required shape and approved quality.circular shape 500 mm internal diameter 10 opening of blockage of kitchen / bathroom / sink / washbsin / sewer line up to 100mm dia and 15 mtr length. 11 opening of blockage of toilet sewer line up to 100mm dia and 15 mtr length. 12 dismantling of blocked toilet / kitchen / bathroom / sink / washbsin / sewer lineand laying of new sewer line in place of blocked sewer line as per required up to 100mm dia and 15 mtr length .including repair with cement mortar and makeing good.bed concrete stacking of useful materials near the site within 50 m lead and disposal of unserviceable materials into municipal dumps . 13 dismantling of blocked indian type w.c with sewer lineand laying & placing of new sewer line with indian type w.c in place of blocked sewer line as per required up to 100mm dia and 15 mtr length .including repair with cement mortar and makeing good.bed concrete stacking of useful materials near the site within 50 m lead and disposal of unserviceable materials into municipal dumps .