a. Providing and Laying sewerage network of left over areas under 5 number nallah sewerage network scheme on the left bank of river Tawi including construction of manholes ,property chambers at Belicharana Contract No SDJ W 40 2020-21

Amount

PART -A

Topographical/Confermatery survey using Total Station equipment and the spot levels including verification / installation of temporary benchmarks and drawing contours at 0.5m interval on GIS based digitized map

Earthwork in excavation by mechanical means (Hydraulic excavator) in foundation trenches, drains pipes & cables etc including dressing of sides & ramming of bottoms including getting out excavated soil & disposal of surplus soil as directed for all levels and leads in all kinds of soil.

Barracading of road providing caution boards, night lamps, watch ward etc at site.

Close timbering in trenches including strutting. Shoring and packing cavities (wherever required) complete including all material, labour. tools with all lead and lifts etc compete as directed by engineer in charge.(measurements to be taken of the face area timbered)

Providing, supplying, lowering, laying and jointing lSl Standard R.C.C.NP-3 pipes in standard lengths of following class and diameter suitable for rubber ring joints including all taxes, insurance, transportation, freight charges, inspection charges, loading, unloading,stacking and jointing in proper grade and alignment as directed and giving flow test etc. complete. (IS - 458/ 1989) for following dia.

For 200 mm Dia

For 250 mm Dia

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 etc. complete as per specification and as directed by engineer in charge.

Removal of unservicible soil incuding and disposal upto 5 Km with all lead and lift including all as per direction of Engineer in charge.

Providing Plain Cement Concrete beding with 1:2:4 (M-15 grade) with carefully compacted backfill using 20 mm and down hard crusher broken stone laying in layers of not more than 15 cm thick including all compaction,curing etc but excluding cost of shuttering.complete for PCC bedding and surrounding as per drawing and as directed by the engineer, including all carriages.

Demolishing cement concrete manually/by mechanical means including disposal of material within 50m lead.

Demolishing RCC work manually/by mechanical means including stacking of steel bars and disposal of unserviceable material within 50m lead.

Dismantling manually/mechanically including stacking of serviceable material and disposal of unserviceable material within 50m lead

Construction of Road side chamber with clear inside opening of 400x400 mm,depth 900 mm,230 mm thick Brick Masonary in CM 1:4,including plastering 15 mm thick in CM 1:4 for both side (neat cement finished inside),100 mm thick coping around property chamber walls in M-20 Concrete,PCC M-15 for Bed of 150 mm thick and benching 75 mm thick,F/C cover slab of size 550x550x100 mm to be provided.The work includes excavation, refilling of excavated material with compaction,fixing of uPVC pipe sleeves of 110 mm dia closed with end cap or any other material approved by the engineer,2 nos 50 mm each for properties and work should be completed as per specifications, drawing and as per directions of engineer.

Connection between manholes in the street and road side chambers.Providing,laying and jointing uPVC/HDPE (PN-4) pipes of ISI mark intended for underground (buried) non pressure gravity drain and sewer applications conforming to IS:15328:2003 with latest amendments for the sizes and stiffness ,closed with end cap at end.The pipes may be of rubber ring joint including hydro field testing of joints,cost of joining materials etc.complete in all respect.(The cost shall be inclusive of excavation and granular sand bedding)as per approved drawing,and as directed by engineer in charge.

110 mm dia (outer diameter)

Constructing brick masonry circular type manhole 0.91 m internal dia at bottom and 0.56 m dia at top in cement mortar 1:4 (1 cement :4 coarse sand), in side cement plaster 12 mm thick with cement mortar 1:3 (1 cement : 3 coarse sand) finished with a floating coat of neat cement, foundation concrete 1:3:6 mix (1 cement : 3 coarse sand : 6 graded stone aggregate 40 mm nominal size), and making necessary channel 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, all complete as per standard design.

0.91 deep m with S.F.R.C. cover and frame (heavy duty,HD-20 grade designation) 560 mm internal diameter conforming to I.S. 12592, total weight of cover and frame to be not less than 182 kg., fixed in cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size) including centering, shuttering all complete.With Sewer bricks conforming to IS : 4885

Extra depth for circular type manhole 0.91m internal dia (at bottom) beyond 0.91 m to 1.67 m

Constructing brick masonry circular manhole 1.22 m internal dia at bottom and 0.56 m dia at top in cement mortar 1:4 (1 cement :4 coarse sand) inside cement plaster 12 mm thick with cement mortar 1:3 (1 cement : 3 coarse sand) finished with a floating coat of neat cement foundation concrete 1:3:6 (1 cement : 3 coarse sand : 6 graded stone aggregate 40 mm nominal size) and making necessary channel 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, all complete as per standard design.

1.68 m deep with SFRC Cover and frame (heavy duty HD-20 grade designation) 560 mm internal diameter conforming to I.S. 12592, total weight of cover and frame to be not less than 182 kg. fixed in cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size) including centering, shuttering all complete. (Excavation, foot rests and 12 mm thick cement plaster at the external surface shall be paid for separately),With Sewer bricks conforming IS : 4885

Extra depth for circular type manhole 1.22 m internal dia (at bottom) beyond 1.68 m to 2.29 m

Constructing brick masonry circular manhole 1.52 m internal dia at bottom and 0.56 m dia at top in cement mortar 1:4 (1 cement : 4 coarse sand) inside cement plaster 12 mm thick with cement mortar 1:3 (1 cement : 3 coarse sand) finished with a floating coat of neat cement, foundation concrete 1:3:6 (1 cement : 3 coarse sand : 6 graded stone aggregate 40 mm nominal size) and making necessary channel 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, all complete as per standard design

2.30 m deep with SFRC Cover and frame (heavy duty HD-20 grade designation) 560 mm internal diameter conforming to I.S. 12592, total weight of cover and frame to be not less than 182 kg. fixed in cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size) including centering, shuttering all complete.(Excavation, foot rests and 12 mm thick cement plaster at the external surface shall be paid for separately),With Sewer bricks conforming IS : 4885

Extra depth for circular type manhole 1.52 m internal dia (at bottom) beyond 2.30 m

Dismantling of interlocking paver block pavements and stacking of usable material and disposal of dismantled materials up to a lead of 50 m stacking serviceable and unserviseable materials separately)

Water Bound Macadam :- Providing, laying, spreading and compacting stone aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness, hand packing, rolling with vibratory roller 8-10 tonnes in stages to proper grade and camber, applying and brooming requisite type of screening/ binding Materials to fill up the interstices of coarse aggregate, watering and compacting to the required density.)

Grading- III 75mm thick (Using Screening Crushable type such as Moorum or Gravel) with vibratory roller.

Grading- II 75mm thick (Using Screening Crushable type such as Moorum or Gravel)

Providing, laying 50mm thick (compacted) average premix bituminous macadam basecourse with stone aggregate of quality, size and grading as specified in latest MORT&H specifications and straight run bitumen of VG-30 @4% by weight of total mix including hot mixing of stone aggregates and bitumen in Hot Mix Plant. Transporting mixed material to the site and laying with paver finisher as per required profile, including cost of priming coat/tack coat and bituminous macadam in required level and grade rolling with roller 8-10 tonne capacity to achieve the required compaction and density all complete including cost of bitumen and all sort of taxes including all leads, lifts, carriage complete.

Providing and laying of 25mm thick Semi-Dense Bituminous Concrete with specified graded stone aggregates for wearing coat including with loading of aggregates with FE loader and hot mixing of bitumen with filler and stone aggregates in hot mix plant, transporting the mixed material by tippers to pavers at site of work and layering the mixed material with mechanical paversfinisher to the required level and grad, rolling with power road roller to achieve the desired density and compaction includingcost of printing coat/tack coat ()bitumen used shall be VG-30 and grading of mix shall be as per the relevant clause of MORT&H) density, and all complete including cost of bitumen and all sorts of taxes, all leads, lifts, carriage complete .

Providing and laying 60 mm thick factory made cement concrete interlocking paver block of M-30 grade made by block making machine with strong vibratory compaction and of approved size and design / shape laid in required colour and pattern over and including 50 mm thick compacted bed of coarse sand,filling the joints with coarse sand etc.complete as directed by engineer in charge.

With new Tiles

Providing, laying or fixing, jointing, testing and commissioning of following sizes of PN-4,PE-80, double flanged, HDPE pipe lengths as per requirements and in positions as per directions of the Engineer, above or below the slab in covered portions and / or in open portions of the Nallah, securing it in place as directed, including cost of bolt/iron brackets etc , running air blower for forced ventilation in the working area of covered Nallah. The work shall also include the cost of rubber insertions and bolts required for the jointing and also the cost of thermal fusion with the plain ended HDPE pipe, wherever required complete job including accesories

DN-200mm HDPE

Providing and Laying of D.I.K-9 pipes and specials casting along tranches and laying the same in trenches to correct,alignment and gradients and complete job.

For-200mm Dia

Structural steel work riveted or bolted in built up sections, trusses and framed work, including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer all complete.

Water Bound Macadam :- Providing, laying, spreading and compacting stone aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness, hand packing, rolling with vibratory roller 8-10 tonnes in stages to proper grade and camber, applying and brooming requisite type of screening/ binding Materials to fill up the interstices of coarse aggregate, watering and compacting to the required density.

Grading- I 75mm thick (Using Screening Crushable type such as Moorum or Gravel) with vibratory roller.

Grading- II 75mm thick (Using Screening Crushable type such as Moorum or Gravel)

Tack Coat - Providing and applying tack coat with Bitumen emulsion using emulsion pressure distributor at the rate of 0.2 kg per sqm on the prepared bituminous/granular surface cleaned with mechancial broom .

Providing laying and rolling of open - graded premix surfacing of 20 mm thickness composed of 13.2 mm to 5.6 mm aggregates either using penetration grade bitumen or cut-back or emulsion to required line, grade and level to serve as wearing course on a previously prepared base, including mixing in a suitable plant, laying and rolling with a smooth wheeled roller 8-10 tonne capacity, finished to required level and grades.) (i) Case - I: Mechanical method using Penetration grade Bitumen and HMP of appropriate capacity not less than 75 tonnes/hour.

Providing and laying of premix sand seal coat with HMP of appropriate capacity not less than 75 tonnes/ hours using crushed stone chipping 6.7 mm size and penetration bitumen of suitable grade.)

Carriage of Sand + Bajri average distance average 20 km by MT 150 m by head load.

PART B

Operation and maintenance for 5 years after successful free trial run for 6months

a.First Year

b. Second Year

c.Third Year

d.Fourth Year

e.Fifth Year

Note:-The Cost of hydro testing during execution and commissioning during trial run shall be deemed to be included in quoted rates

Ms R K Gupta and Co