Restoration and repair of bank erosion at 17th km of NH-53 ( Silchar - Jiribam Section) under SOPD for the year 2019-20 under PWD NH Division Silchar in the State of Assam

Amount

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 and backfilling with approved material.

Qty for Horizontal drain & virtical filter drain

Manually driven RCC Pile : Providing cast in situ manually driven Reinforced cement concrete pile of M20 grade concrete of required bored diameter, length and with reinforcement as per specifications and drawings. Reinforcement to be measured and paid separately as per Item no 21.4.1 ( B) Pile dia 450 mm ( Bldg SOR 13-14)

Supplying, fitting and placing TMT bar reinforcement in sub-structure complete as per drawing and technical specifications TMT Corrosion Resistant Steel (CRS) reinforcement bar of Fe-500 N/mm2

PCC 1:3:6 in Foundation (Plain cement concrete 1:3:6 nominal mix in foundation with crushed stone aggregate 40 mm nominal size mechanically mixed, placed in foundation and compacted by vibration including curing for 14 days.) For CC Drain & Pile cap base

Plain/Reinforced cement concrete, in substructure complete as per drawing and technical specification including steel shuttering formwork. surface drain in mid of side slope

plain / reinforced cement concrete in sub structure complete as per drawing and tech sp and steel shuttering formwork For Pile cap, RCC grade M-25

Providing and laying Pitching on slopes laid over prepared filter media including boulder apron laid dry in front of toe of embankment complete as per drawing and Technical specifications 'Stone/Boulder

Providing and laying Filter material underneath pitching in slopes complete as per drawing and Technical specification

Boulder apron laid in wire crates (Providing and laying of boulder apron laid in wire crates made with 4mm dia GI wire conforming to IS: 280 & IS:4826 in 100mm x 100mm mesh (weaved diagonally) including 10% extra for laps and joints laid with stone boulders weighting not less than 40Kg each.)

(A) Providing and laying one layer of Non-Woven geotextile of minimum mass per unit area of 280gms/sqm.having minimum roll width of 5.0m treated with carbon black with physical properties as given in clause no 702.2.3. over 25mm thick compacted sand layer on a prepared subgrade as a filter media with necessary overlaps as per drawing and technical specification and as directed by the Engineer in charge complete.

Embankment Construction with Material Obtained from Borrow Pits (Construction of embankment with approved material obtained from borrow pits with all lifts and leads, transporting to site, spreading, grading to required slope and compacting to meet requirment of table 300-2 ( including compensation of earth.)( Including cost of testing of materials at site and laboratory as directed by the deptt.)

Construction of Sub grade and Earthen Shoulders with approved materials obtained from borrow pits, with initial lead up to 3.00 Km. transporting to site, spreading, grading to required slope and compacting to meet requirement of table 300 - 2( including land compensation of earth) as per MoRTH specification 305 From private land

Granular Sub-Base with Coarse Graded Material ( Table:- 400- 2) (Construction of granular sub-base by providing coarse graded material, spreading in uniform layers with motor grader on prepared surface, mixing by mix in place method with rotavator at OMC,and compacting with vibratory roller to achieve the desired density,complete including all lead and lift conforming to clause no 401 of MoRT&H specification for Road and Bridge works ( 5th Revision ) complete as directed by the Deptt. i) For grading- I Materials

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 sb-base/base course on well prepared surface and compacting with vibratory roller to achieve the desired density including all lead and lift conforming to clause no 406 of MoRT&H specification for Road and Bridge works ( 5th Revision) complete as directed by the Deptt.

Prime coat (Providing and applying primer coat with bitumen emulsion on prepared surface of granular Base including clearing of road surface and spraying primer at the rate of 1.00 kg/sqm using mechanical means.)( Including cost of testing of materials at site and laboratory as directed by the deptt.)

Providing and applying tack coat with bitumen emulsion using emulsion pressure distributor at the rate of 0.20 kg per sqm on the prepared bituminous/granular surface cleaned with mechanical broom.( Including cost of testing of materials at site and laboratory as directed by the deptt.)

Providing and laying Dense graded Bituminous Macadam with 100-120 TPH hot mix plant producing an average output of 75 tonnes per hour using crushed aggregates of specified grading premixed with bituminous binder, transported to site, laid over a previously prepared surface with paver finisher to the required grade, level and alignment and rolled as per clauses 501.6 and 501.7 to achieve the desired compaction including all leads and lift conforming as per clause507 of MoRT&H specification for Road and Bridge works ( 5th Revision )with aggregate of grading II ( 19 mm nominal size) complete as directed by the Deptt. (a)With hydrated lime/cement as filler ( refer table 500-9 of MoRT&H specification) & anti stripping agent as per IS :14982, (I)with 60/70 or VG-30 grade paved bitumen, (ii) for GradingII(19 mm nominal size)

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 reqd. grade, lavel and alignment,rolling with smooth wheeled,vibratory and tandem rollers to achieve the desired compaction as per MoRT&H cl. no.509. complete in all respect. including all lift and lead and cost of testing of materials at site and laboratory as directed by the deptt.) (a) With hydrated lime/cement as filler ( refer table 500-9 of MoSRT&H specification),With anti stripping agent (I)'with PMB-70, (ii) for Grading-II(13 mm nominal size)

Type - A, "W" : Metal Beam Crash Barrier (Providing and erecting a "W" metal beam crash barrier comprising of 3 mm thick corrugated sheet metal beam rail, 70 cm above road/ground level, fixed on ISMC series channel vertical post, 150 x 75 x 5 mm spaced 2m center to center, 1.8 m high, 1.1m below ground/road level, all steel parts and fitments to be galvanized by hot dip process, all fitting to conform to IS:1367 and IS:1364, metal beam rail to be fixedon the vertical post with a spacer of channel section 150mmX75mmX5mm, 330mm long complete as per clause 810.)