8296 REPAIRS, MAINTENANCE OF SEWAGE LINES, SEPTIC TANKS, MANHOLES ETC. AT NSTL UNDER AGE (I) RnD NSTL, VISAKHAPATNAM

Amount

Excavating in trenches n. exc. 1.5m wide and n. exc. 1.5m in depth for foundation etc. or for shafts, wells, cesspits, manholes, pier holes etc. n. exc. 10sq.m. on plan and n. exc. 1.5m in depth and getting out in hard/ dense soil all as specified.

Excavating in trenches n. exc. 1.5m wide and depth exc. 1.5m but n.exc. 3.00m for foundation etc. or for shafts, wells, cesspits, manholes, pier holes etc. n. exc. 10sq.m. on plan and getting out in hard/ dense soil all as specified.

Removing excavated materials to a distance not exc. 50m and depositing where directed at a level n.exc 1.50m above the starting point all as specified.

Returning, filling in including spreading leveling watering and well ramming in layers not exc. 25cm in any type of soil all as specified.

Demolition of cement concrete (un reinforced) of any description and in any position not otherwise specifically provided for

M&L for plain cement concrete 1:4:8 type D2 (using 40mm graded stone aggregate) as in filling and mass concrete in sunken floors etc. all as specified and as directed.

M&L for PCC 1:2:4 type B1 using 20mm graded aggregate as in surface channels and drains all as specified

Demolition of brick work or stone masonry built in cement mortar including all quoins, arches, pillars, etc complete all as directed.

M&L for brick work with fly ash bricks straight or curved on plan exc. 6m mean radius using modular bricks built in cement mortar (1:6) all as specified.

M&L for providing cement concrete type B1, 1:2:4 using 20mm graded aggregate as in lintels up to 1.5m clear span, cills, steps, seismic and other similar bands, plinth courses, copings, bed plates etc complete including necessary formwork complete all as specified.

Demolition of reinforced cement concrete (reinforcement cut as required to facilitate demolition) of any description and in any position not otherwise specifically provided for all as specified.

M&L Providing precast cement concrete 1:2:4 type B1 (using 20mm graded stone aggregate) in landings, cover slabs (for man holes etc.) chullah hoods, chajjas, water troughs, mangers, shelves and similar articles with plain faces set in cement mortar 1:4 complete all as specified and as directed. [Note: Reinforcement shall be measured and paid separately under relevant item of this BOQ]

S&F high strength deformed TMT steel bars 10mm dia and over, cut to length, bent to shape required, including cranking, bending spirally for hooping for columns, hooking ends and binding with and including mild steel wire (annealed) not less than 0.9mm dia all as specified and as directed.

S&F high strength deformed TMT steel bars 6 to 8mm dia, cut to length, bent to shape required, including cranking, bending spirally for hooping for columns, hooking ends and binding with and including mild steel wire (annealed) not less than 0.9mm dia all as specified and as directed.

Taking down cement plaster on brick work or stone walls of manholes, etc including raking out joints, hacking for key, scrubbing down with water, etc complete all as directed.

M&L for providing cement concrete type C1, 1:3:6 using 20mm graded aggregate as in lintels up to 1.5m clear span, cills, steps, seismic and other similar bands, plinth courses, copings, bed plates etc complete including necessary formwork complete all as specified.

M&L for forming fair finished drain or channel 30cm inner girth in cement concrete, using extra cement, including forms, moulds, mitred/stopped ends etc.

M&L for rendering 15mm thick in CM 1:4 on fair faces of brick work or concrete surfaces finished even and smooth without using extra cement complete all as specified and as directed.

M&L for concrete bed to drain pipes of 150mm bore dia including packing under, and haunching against the sides of pipes after they are laid and tested; in cement concrete 1:3:6, type C2 all as specified.

M&L for concrete bed to drain pipes of 200mm bore dia including packing under, and haunching against the sides of pipes after they are laid and tested; in cement concrete 1:3:6, type C2 all as specified.

M&L for concrete bed to drain pipes of 300mm bore dia including packing under, and haunching against the sides of pipes after they are laid and tested; in cement concrete 1:3:6, type C2 all as specified.

S&F UPVC Soil, Waste pipes Type 'B' conforming to IS 13592-1992, 150mm internal dia single socketed in any length with rubber ring joints laid in trenches/ floors complete including taking up existing unserviceable drain pipes all as specified and as directed

S&F UPVC Soil, Waste pipes Type 'B' conforming to IS 13592-1992, 150mm internal dia single socketed in any length with rubber ring joints fixed to walls complete including taking down existing pipes all as directed.

Supply and laying in trenches DWC HDPE flexible pipe of 195mm internal dia Class SN-4 with socket & spigot joints conforming to IS 16098 (Part-2) along with connected accessories like couplers, bends, end caps etc. for sewage application all as specified and as directed.

Supply and lay Reinforced concrete pipes 300mm bore, class NP2, laid and jointed complete with collars including taking up/ down existing damaged pipes.

Removing carefully cover slab of manholes of any size, depth n.exc. 1.0m and removing the scum/ sludge including any organic or inorganic matter, washing down with water for smooth functioning of sewage line, removing the sludge obtained from cleaning to a distance not exceeding 50 mtr and buried in ground to a depth not less than 1 metre, and setting the man hole covers in position after inspection etc. all as directed

All as per Item No. 26 herein before but manhole of depth exc. 1.0m but n.exc. 2.0m

Taking out carefully precast RCC cover slabs of septic tank/ filter bed of any capacity, taking out scum/ sludge including liquid using mobile tanker equipped with sludge pump etc. and depositing off at places earmarked by GVMC authorities outside MD land, cleaning the tank with water, bleaching powder etc. clearing the bushes, vegetation etc. up to a distance of 2 mtr from outer edge all around the septic tank, including placing in position and setting the cover slabs with cement sand mortar (1:6) after inspection etc. complete all as directed.

Clearing out blockage from WC up to manhole with cleaning rod including removing all materials from P trap of WC and disposing off complete all as directed.

Clearing out blockage from Floor trap/ Nahani trap up to manhole with cleaning rod including removing all materials from the trap and disposing off complete including removing and refixing the grating all as directed.

Cleaning of blockage existing sewage lines of 100mm to 150mm dia by rodding from one manhole to next manhole and washing with fresh water including removing all sludge from the sewage lines and disposed off properly outside the MD land complete all as directed.

Cleaning of blockage existing sewage lines of 200mm to 300mm dia by rodding from one manhole to next manhole and washing with fresh water including removing all sludge from the sewage lines and disposed off properly outside the MD land complete all as directed.

Sai Srija Constructions

B SRINIVAS

S A R CONSTRUCTIONS

ROHITH INFRA

SRI SRK ENGINEERS

P VENKATA RAO

sagar infra