Sewerage system, Sewer pipeline maintenance and related miscellaneous jobs for attending breakdown maintenance/ modification jobs at Anushaktinagar, Mandala area and Western Sector area, Mumbai

Amount

ABSTRACT SHEET

PART A : MAIN ITEMS

Description of Work / Item(s)

Amount

PART A : MAIN ITEMS

Up to 1.50m depth from GL

From 1.50m to 3.0m below GL

From 3.0m to 4.5m below GL

Up to 1.50m depth from GL

From 1.50m to 3.0m below GL

From 3.0m to 4.5m below GL

Earth work excavation in foundations in hard rock by chiseling up to following depth including dewatering till completion of work and stacking & disposing to a distance 50m etc. complete all as per specifications & as directed by the Engineer-in-Charge

Up to 1.50m depth from GL

From 1.50m to 3.0m below GL

From 3.0m to 4.5m below GL

Providing & laying UPVC underground drainage pipes & fittings & Testing of approved make ( Supreme ) for sewage lines of following dia. conforming to IS: 15328, Nominal ring stiffness, SN-8, SDR-34 with ISI mark in trenches for all depths, to correct grade, level & alignment including jointing with cement solvent/welded joints as per manufacturers recommendation, testing etc. complete all as per specifications & as directed by EIC

110mm nom. dia.(OD)

160mm nom. dia.(OD)

230mm nom. dia.(OD)

300mm nom. dia.(OD)

Providing & laying salt glazed stoneware pipes & fittings & Testing of Grade 'A" or 'AA"of following dia. conforming to IS:651 in trenches for all depths, to correct grade, level & alignment including jointing with hemp yarn and cement mortar 1:1 including testing etc. complete all as per specifications & as directed by EIC

100mm dia.

150mm dia.

230mm dia.

Plain cement concrete 1:2:4 using graded stone aggregate of 40mm maximum size including consolidation, formwork, scaffolding, finishing, curing etc. complete all as per specifications & as directed all as per specifications & as directed by EIC for encasing of sewer lines.

Brick work in cement mortar 1:6 using well burnt locally available bricks of approved quality including raking out joints above ground level simultaneous pointing below ground level, curing, scaffolding, demolishing existing brick work at all levels and disposal of debris out side of colony etc. all complete as per specification and as directed by Engineer-in-Charge.

Cement plastering 20 mm thick, add water proofing compound by weight 2% for using factory manufactured pre mix/ready mix mortar in CM 1:4 of 'Roofit Mix'of M/s Premier Floor to Roof Materials pvt.ltd/ 'Easy plast' of M/s Walplast Products pvt.ltd/ 'Readiplast' of M/s Ultratech Cement Ltd or other approved equivalent make, having minimum composition of C:S :: 1:4 using fully treated dry, well graded natural sand conforming to IS 383 suitable for external plastering, having low rebound properties, low water demand for curing properties, mechnical mixing with water in a metalic tray only to make good consistency as per the specification of the Manufacturer and applied on internal/external surfaces and ceiling finished smooth with neat cement punning over brick walls or concrete surfaces at all floors and levels, including curing , removing existing damaged/ worn out plastering and disposing off debris out side colony etc. complete all as per specifications and as directed by the Engineer-in-charge.

Demolishing plain cement concrete work by chiseling at all levels including disposal of removed materials within 50 meter. Lead etc. all complete as directed by Engineer-in-Charge

Demolishing brick masanory in cement mortar including scaffolding, stacking of serviceable materials & disposal of unserviceable materials etc.all complete as directed by Engineer-in-Charge

Constructing conical manhole chamber of size 1200mm internal dia. at bottom & 540mm internal dia. at top constructed in conical shape up to 1500mm depth from ground level in 230mm thick brick masonry in cement mortar 1:4 & in cylindrical shape thereafter in 345mm thick brick masonry in cement mortar 1:4 over a bed of 300mm thick cement concrete 1:2:4 foundation having 300mm offset over brick masonry all around water proof cement plaster 20mm thick in cement mortar 1:3 on inside, outside & all exposed surfaces finished with a floating coat of neat cement including adding waterproofing compound @ 2% of weight of cement necessary cement concrete 1:2:4 for forming benches & channel, providing & fixing CI steps each weighing not less than 3.50kg & fixing RCC frame & cover etc. complete chamber depth not exceeding 1800mm all as per specifications & as directed by Engineer-in-Charge (RCC frame & cover will be paid under relevant item)

Constructing conical manhole chamber of size 1200mm internal dia. at bottom & 540mm internal dia. at top

Extra over item 11 for depths beyond 1800mm initial depth in 340mm thick brick masonry in cylindrical shape of 1200mm internal dia. in cement mortar 1:4. Providing & fixing steps each weighing not less than 3.50kg etc. all as per standard specifications.

i)Constructing brick masonry Inspection chambers of internal sizes 900 mm X 600 mm at bottom and 900 mm X 450 mm at top for an initial depth of 600 mm consisting following items of work-in 230 mm thick brick masonry in cement mortar 1:4 over 150 mm thick bed in cement concrete of grade 1:2:4 with 150 mm offset all-round, tapering the longitudinal walls to a height of 450 mm from top of chamber cover to obtain an internal dimension of 900 X 450 mm. ii) 20 mm thick plaster in cement mortar 1:3 mixed with water proofing compound @ 2% by weight of cement on internal and external surfaces, internal surfaces and top finished with a floating coat of neat cement. iii) Making benching and haunches in cement concrete of grade 1:2:4 and finishing with floating coat of neat cement.iv) Fixing frame and cover at top using cement concrete of grade 1:2:4 ( for bed block /bearing course and haunches in cement concrete of grade 1:2:4 and finishing with floating coat of neat cement .iv) Fixing frame and cover at top using cement concrete of grade 1:2:4 ( for bed block /bearing course and capping ) and cast iron steps / foot rests, dewatering the pit, if necessary, till the completion of work. all as per standard specifications and as directed by E-in-C.

Constructing brick masonry Inspection chambers of internal sizes 900 mm X 600 mm at bottom and 900 mm X 450 mm at top

Extra depths beyond 600mm initial depth for chambers of size 900 mm X 600 mm at bottom and 900 mm X 450 mm at top

Providing & fixing precast approved brand (EVERLAST or approved equivalant) FRP/GRP Composite Manhole covers as approved by Competant athority / E.I.C tested as per IS:1726, including cost of necessary hardware, 1:2:4 grade concrete for fixing frame, bed block (bearing course) and capping including necessary form work and CM 1:2 mortar for fixing the frame & for plastering exposed surfaces of concrete bed block (bearing course) and capping finished smooth with floating coat of neat cement etc., complete as per specifications, drawings and as directed by the E.I.C. Note:-Including transporting the existing frame & covers removed from site of work to DCSE stores/PH stores etc. complete all as directed by Engineer-in-Charge

a)Rectangular frame & cover Rectangular Heavy duty (Grade HD - 20 designation as per IS:1726) frame and cover size 910 x 450mm

b) Circular frame & cover Circular Heavy duty (Grade HD-20 Designation as per IS:1726) frame and cover clear internal dia. 530mm

Supplying & laying rough shahabad stone of size 600mm x 600mm and 40 mm (min) thick for pavement / footpath etc.over a bed of 50 mm thick stone grit & dust in proper line, level or slope including filling the joints with 30mm thick PCC 1:2:4 using graded stone aggregrate of 10mm size and finishing the joints with groove (15mm x 20mm) pointing in C.M. 1:3 and providing 100mm x 100mm, edging with PCC 1:2:4 all around the stone pavement, including cleaning site, removing existing pavement, stacking serviceable materials and disposing of the unwanted materials, debris etc. out side the colony etc. complete all as per specifications and as directed by the Engineer-in-Charge.

Removing and re-doing, laying 50mm average thickness rough shahabad stone/paver blocks paving in footpaths over a bed of 150mm thick murrum(incl.supply of murrum & preparation of murrum bed) to proper slope, includding cutting the edges to proper lines & sunk/flush pointing with cement mortar 1:3 with 15X10 mm groove crosswise & longti- tudinally or finishing as per the original & adjacent footpath, curing, cutting of stones whereever required & transporting the stones to site of work from DCSE stores/removed from site under item No.1 etc. complete all as directed by Engineer-in-Charge

Providing and fixing 80 mm thick factory made rough finished interlocking paver blocks of approved make, colour, shape laid in pattern, manufactured with cement concrete grade not less than M-40, including supplying & laying 50 mm thick stone grit & dust evenly spread over the sub base including preparation & consolidation of sub base, and vibrating the paver block surface with surface vibrator, finished in line, level and filling the joints with fine sand and removal of excess sand, cleaning the surface etc. complete all as per specifications and as directed by the Engineer-in-Charge.

Cutting the existing asphalt macadam road for exposing, laying pipe lines, sewers, cables etc. including random rubble soling & making good the same after satisfactory completion of work but excluding black topping, watering, ramming all complete as directed to the entire satisfaction of Engineer-in-charge. Note :-Restoration of cutting road shall be done as follows or as directed by EIC 1) All road cutting shall be re-stored by P.C.C./R.M.C. concrete , 2) concrete depth should not less than 600 mm. to be paid relevant item.

Painting plastered / concrete surfaces with two coats of exterior grade acrylic emulsionpaint of Apex ultima of M/s.Asian Paints of approved colour and shade over a coat of approved exterior grade primer of M/s. AsianPaints all as per manufacturer'srecommendations and as per the approved sample including providing necessary scaffolding,cleaning the surface with water to remove all coating, dust, filling up cracks &crevices with approved putty, curing thesurface etc. complete as per specificationsand as directed by Engineer in Chargea) over sand faced cement plasterb) over RCC jalli (both sides of jally shall be measured for payment) (May be utilized for painting of chambers,etc. as per site requirments)

Cleaning of Sewerage tanks (biogas) / Septic tanks by Cleaning Machines:-

Cleaning of Sewerage tanks(biogas)/septic tanks: - Removal of wet/dry sewage slurry from septic tanks & disposal the same through BMC approved sewage tankers. Sewage tankers must be approved and register by BMC, CERTIFICATE should be submitted and approved by competent authority. After removing sewage from tank, clean the tank manually using portable water available for washing tank using Jet spray and de-watering the water from septic tank. Sewage should not dispose inside colony. As per direction and instruction of Engineer-In-Charge