NHIDCL/PMU-SKM/IBP/Rehab/2020

RCC BOX CULVERT 4x4

Excavation for Structures (Earth work in excavation of foundation of structures as per drawing and technical specification, including setting out, construction of shoring and bracing, removal of stumps and other deleterious matter, dressing of sides and bottom, backfilling the excavation earth to the extent required and utilising the remaining earth locally for road work.)

Provide M15 plain cement concrete levelling course below box bedding ,wingwalls, catch pits, cross drains etc. complete as per Drawings and Technical Specification Clause 1500,1700 & 2100.

Provide M20 plain cement concrete levelling course in catch pit complete as per Drawings and Technical Specification Clause 1500,1700 & 2100.

Reinforced cement concrete M25 in sub-structure complete as per drawing and technical specifications

Supplying, fitting and placing HYSD bar reinforcement in sub-structure complete as per drawing and technical specifications

Providing & laying Plum concrete in 1:2:4 c.c. (1cement, 2coarse sand, 4clean hard graded stone chips of 20 mm down nominal gauge) with 50% clean hard stone of sizes not exceeding 15cm including shuttering, compacting and curing complete.

Plastering with cement mortar (1:3 ) in sub-structure as per Technical specifications

Providing and laying of Filter media with granular materials/stone crushed aggregates satisfying the requirements laid down in clause 2504.2.2. of MoRTH specifications to a thickness of not less than 600 mm with smaller size towards the soil and bigger size towards the wall and provided over the entire surface behind abutment, wing wall and return wall to the full height compacted to a firm condition complete as per drawing and technical specification.

Back filling behind abutment, wing wall and return wall complete as per drawing and Technical specification A -- Granular material

TOP SLAB RCC BOX CULVERT

Reinforced cement concrete M25 in sub-structure complete as per drawing and technical specifications

Supplying, fitting and placing HYSD bar reinforcement in sub-structure complete as per drawing and technical specifications

PAVEMENT WORKS

Construction of Subgrade and Earthen Shoulders (Construction of subgrade and earthen shoulders with approved material obtained from borrow pits with all lifts & leads, transporting to site, spreading, grading to required slope and compacted to meet requirement of table No. 300-2)

Granular Sub-base with Close Graded Material (Table:- 400-1) By Mix in Place Method (Construction of granular sub-base by providing the material, spreading in uniform layers with motor grade on prepared surface, mixing by mix in place method with rotavator at OMC,and compacting with vibratory roller to achieve the desired density, complete as per clause 401 ) For grading- II Material

Wet Mix Macadam (Providing, laying, spreading and compacting graded stone aggregate to wet mix macadam specification including premixing the Material with water at OMC in mechanical mix plant carriage of mixed Material by tipper to site, laying in uniform layers with paver in sub- base / base course on well prepared surface and compacting with vibratory roller to achieve the desired density.)

Prime Coat(i) Low porosity Providing and applying primer coat with Bitumen emulsion on prepared surface of granular base including cleaning of road surface and spraying primer at the rate of 0.70- 1.0 kg/sqm using mechanical means as per Technical Specification Clause 502.

Tack Coat (i) Providing and applying tack coat with Bitumen emulsion (RS-1) using emulsion pressure distributor at ther ate of 0.2- 0.30 kg per sqm on the prepared bituminous surface and cleaned with Hydraulic broom as per Technical Specification Clause 503.

60 mm thick Dense Graded Bituminous Macadam, Dense Graded Bituminous Macadam (Providing and laying dense bituminous macadam with 100-120 TPHbatch type HMP producing an average output of 75 tonnes per hour using crushed aggregates of specifiedgrading, premixed with bituminous binder @ 4.0 to 4.5% by weight of total mix of mix and filler, transportingthe hot mix to work site, laying with a hydrostatic paver finisher with sensor control to the required grade,Level and alignment, rolling with smooth wheeled, vibratory and tandem rollers to achieve the desiredcompaction as per MoRTH specification clause No. 505 complete in all respects.) Case - II for Grading II ( 19 mm nominal size )

40 mm thick Bituminous Concrete, Bituminous Concrete (Providing and laying bituminous concrete with 100-120 TPH batch type hot mix plant producing an average output of 75 tonnes per hour using crushed aggregates of specified grading, premixed with bituminous binder @ 5.4 to 5.6 % of mix and filler, transporting the hot mix to work site, laying with a hydrostatic paver finisher with sensor control to the required grade, level and alignment, rolling with smooth wheeled, vibratory and tandem rollers to achieve the desired compaction as per MORTH specification clause No. 509 complete in all respects), Case - II for Grading II (10 mm nominal size )

REINFORCED CEMENT CONCRETE PAVEMENT

Dry Lean Cement Concrete Sub- base (Construction of dry lean cement concrete Sub- base over a prepared sub-grade with coarse and fine aggregate conforming to IS: 383, the size of coarse aggregate not exceeding 25 mm, aggregate cement ratio not to exceed 15:1, aggregate gradation after blending to be as per table 600-1, cement content not to be less than 150 kg/ cum, optimum moisture content to be determined during trial length construction, concrete strength not to be less than 10 Mpa at 7 days, mixed in a batching plant, transported to site, laid with a paver with electronic sensor, compacting with 8-10 tonnes vibratory roller, finishing and curing.)

Cement Concrete Pavement (Construction of un-reinforced, dowel jointed, plain cement concrete pavement over a prepared sub base with 43 grade cement @ 400 kg per cum, coarse and fine aggregate conforming to IS 383, maximum size of coarse aggregate not exceeding 25 mm, mixed in a batching and mixing plant as per approved mix design, transported to site, laid with a fixed form or slip form paver, spread, compacted and finished in a continuous operation including provision of contraction, expansion, construction and longitudinal joints, joint filler, separation membrane, sealant primer, joint sealant, debonding strip, dowel bar, tie rod, admixtures as approved, curing compound, finishing to lines and grades as per drawing )

ROAD SAFETY WORK

Type - A, "W" : Metal Beam Crash Barrier (Providing and erecting a "W" metal beam crash barrier comprising of 3 mm thickcorrugated sheet metal beam rail, 70 cm above road/ground level, fixed on ISMC series channel vertical post, 150 x 75 x 5mm spaced 2 m centre to centre, 1.8 m high, 1.1 m below ground/road level, all steel parts and fitments to be galvanised by hot dip process, all fittings to conform to IS:1367 and IS:1364, metal beam rail to be fixed on the vertical post with a spacer of channel section 150 x 75 x 5 mm, 330 mm long complete as per clause 810)

TOPTECH INFRASTRUCTURE