Construction of RCC Bridge No. 5 by 1 at Borjan on Duliajan-Digboi Road under deposit scheme under PWRD, Digboi and Margherita Territorial Road Division, Tinsukia

Amount

Dismentling of existing structure comprising of masonry, cement concrete, wood work, steel work, including T&P and scaffolding wherever necessary, sorting the dismantled material, disposal of unserviceable material and stacking the serviceable material with all lifts and lead of 1000 m as per Technical Specification Clause 202. By manual Means

Earthwork in excavation for structures as per drawings and technical specificationsCl.305.1 , including setting out, construction of shoring and bracing, including removal of stumps and other deleterious matterand dsposal upto a lead of 50m , dressing of sides and bottom and back filling n trenches wth excavated suitable materials I) In Ordinary Soil B. Mechanical means. i) Depth up to 3.00 m (without dewatering)

Bored cast-in-situ M 35 grade RCC pile excluding reinforcement complete as per drawing and Technical Specifications and removal of excavated earth with all lead and lift up to 1000 m as per MORTH Section No. 1100,1600 & 1700. Pile diameter = 1000 mm

Pile load test on single vertical pile in accordance with I.S. 2911 (Part IV)as per technical specifications of MORTH section no 1100 a) Initial load test

Cement concrete for reinforcement concrete in pile cap complete as per drawing and technical specifications 0f MORTH section no 1100,1500&1700 A. RCC grade M - 20 Case I : Using concrete mixer

Levelling course for Pile cap: Providing and lying of PCC M - 15 levelling course 100 mm thick below the pile cap. as per drawing and technical specifications 0f MORTH section

Supplying, fitting and placing uncoated TMT bar reinforcement in foundation complete as per drawing and Technical Specifications Clauses 1600 with TATA make TMT rebar.

Substructure Plain/ Reinforced Cement Concrete in substructure complete as per Drawing and Technical Specifications clauses 1500, 1700 & 2200 C) RCC Grade M 20 I) Height up to 5.0 m Case-I : Using Concrete Mixer

Supplying, fitting and placing TMT bar reinforcement(Fe 415) in substructure complete as per drawing and Technical Specifications Clauses 1002,1005,1010 and 1202

Supplying, fitting and fixing in position true to line and level elastomer bearing conforming to IRC : (83 pt.II) section ix and clause 2003 of MORTH specifications complete including all accessories as per drawing and technical specifications as per MORTH section 2000, 2200

Superstructure Providing and laying reinforced cement concrete in superstructure as per drawing and technical specificationclause 800,1205 and 1205.5 A) With Crushed Stone II. RCC grade M - 25 Case I : Using concrete mixer For T beam and slab, 1) Height up to 5.0 m

Supplying , fitting and placing HYSD bar reinforcemet complete as per drawing and technical specification Clauses 1002, 1010 and 1202

Providing and laying cement concrete wearing coat M 30 grade including reinforcement complete as per drawing and Technical specification Clauses 800 and 1206.3. VELWith natural gRA

Construction of RCC railing of M25 grade n Cast in Situ ,wth 20mm nomnal sze aggregates true to line and grade tolerrance of vertcal railing post not to exceed 1 in 500, centre to centre spacing between vertical post not to exceed 2000mm as per drawing and techincal specification Clauses 800,900 and 1208.3

Drainage Spouts complete as per approved drawing and technical specifications clause1209

Strip Seal Expansion Joint (Providing and laying of a strip seal expansion joint catering to maximum horizontal movementupto 70 mm, complete as per approved drawings and standard specifications to be installed by the manufacturer/supplier or their authorised representative ensuring compliance to the manufacturer’s instruction for installation).

Protection Works: 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 weighing not less than 40 kg each.as per Clause No. 2503 of MORTH Specification of Roads and Bridge Works.

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 of Clause 2504 of MORTH Specification of Roads and Bridge Works. A) Stone / Boulder

Providing and laying filter materials underneath pitching in slopes complete as per drawing and Technical Specifications as per Clause No. 2504 of MORTH Specification of Roads and Bridge Works.

APPROACH Construction of embankment with materials obtained from borropw pits. Construction of embankment with materials obtained from borropw 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 clause 305 of MORTH Specification of Roads and Bridge Works. I) From private land

Construction of sub grade and Earthen shoulders 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 clause 305 of MORTH Specification of Roads and Bridge Works. I) 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 as per cl. 401. Vide Annexure - 1. For grading II material

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 material to fillup the interstices of coarse aggregate,watering and compacting to the reqd. density ( with an initial lead of 5.0 km. ) . Grading - II.

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 material to fillup the interstices of coarse aggregate,watering and compacting to the reqd. density ( with an initial lead of 5.0 km. ) . Grading - III.

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.) . Vide item no 5.1 B of SOR of APWD Roads for the year 2018-19. (i) With bitumen emulsion-CSS-1h

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.). Vide item no 5.2 of SOR of APWD Roads for the year 2018-19. (b) dry & hungry bituminous surface

Dense Graded Bituminous Macadam (Providing and laying dense bituminous macadam with 100-120 TPH batch type HMP producing an average output of 75 tonnes per hour using crushed aggregates of specified grading, premixed with bituminous binder @ 4.0 to 4.5% by weight of total mix and filler transporting the hot miox 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 MoSRT&H cl. no. 507. complete in all respect. (including carriage of mixed materials up to 10.0 Km initial lead from mixing plant )( Including cost of testing of materials at site and laboratory as directed by the deptt.). Vide Annexure - 4.

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 MoSRT&H cl. no.509. complete in all respect. (including carriage of mixed materials up to 10.0 Km initial lead from mixing plant )( Including cost of testing of materials at site and laboratory as directed by the deptt.). Vide Annexure - 5.

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

Supplying, fitting and fixing RCC guard post 150cm long erected 75cm above the ground and 75cm below the ground with M-15 grade (nominal mix 1:2:4 with broken stone aggregate up to 20mm size) of cement concrete and required reinforcement tied in position with annealed black wire including centering, moulding the top, curing including painting concrete surfaces in 23cm strips upto 0.75m from the top alternately in black and white and having 2 nos. reflective band of desired shade etc. complete as per design and as directed.

Dulal Dutta