Repair and restoration of Flood damages of Culvert No.2/1 at Bordoloni to Managalati Road (CH.1300.00m) Under SDRF for the year 2021-22.

Amount

Dismantling Dismantling of existing existing structures structures like culverts culverts, bridges bridges, retaining retaining walls and other 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. B) Cement Concrete.

Dismantling Dismantling of existing existing structures structures like culverts culverts, bridges bridges, retaining retaining walls and other 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.c) Reinforced Cement Concrete.

Construction of Granular Sub-base by providing well 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 smooth wheel roller to achieve the desired density, complete as per Technical Specification Clause 401. ( II ) For Grading II Material

Providing, laying, spreading and compacting stone aggregate of specific sizes to water bound macadam specification including spreading in unirorm thickness, hand packing, rolling with three wheel 80-100 kN static roller in stages to proper grade and camber, applying and brooming, stone screening/binding materials to fill-up the interstices of coarse aggregate, watering and compacting to the required density Grading III as per Technical Specification Clause 405.Grading III

Interlocking Concrete Block Pavement: Providing and laying interlocking concrete block pavement with M40 grade grade of concrete blocks having thickness 80mm as per technical specification clause 1504 complete including carriage. i) Generel ICBP(Normal)

Providing and laying of boulder apron laid in wire crates with 4 mm dia GI wire conforming to IS:280 and IS:4826 in 100 mm x 100 mm mesh (woven diagonally) including 10 per cent extra for laps and joints laid with stone boulders weighing not less than 25 kg each as per drawing and technical specifications Clause 1301

Providing and laying pitching on slopes laid over prepared filter media as per drawing and technical specifications Clause 1302

Providing and laying filter material underneath pitching in slopes complete as per drawing and technical specifications Clause 1302

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. I Ordinary soil,A Manual Means,(I) Without dewatering,(i)upto 3 m depth

Sand Filling in Foundation Trenches as per Drawing & Technical Specification

Plain/Reinforced cement concrete, in open foundation complete as per drawing and technical specification including steel shuttering formwork.(N) Without plasticiser, A PCC Grade M-15

Plain/Reinforced cement concrete, in open foundation complete as per drawing and technical specification including steel shuttering formwork.(N) Without plasticiser, A PCC Grade M-20

Plain/Reinforced cement concrete, in open foundation complete as per drawing and technical specification including steel shuttering formwork.(N) Without plasticiser, C RCC Grade M-20

Supplying, fitting and placing TMT bar reinforcement in open foundation complete as per drawing and technical specifications clause 1000 and 1202

Plain/Reinforced cement concrete, in sub-structure complete as per drawing and technical specification including steel shuttering formwork.(N) Without plasticiser, A PCC Grade M-15

Supplying, fitting and placing TMT bar reinforcement in sub-structure complete as per drawing and technical specifications clauses 1002,1005,1010 &1202.

Plain/Reinforced cement concrete, in sub structure complete as per drawing and technical specification and steel shuttering formwork (N) Without plasticiser, E RCC Grade M-20, a) Height upto 5 m,Case-I

Providing and laying Cement concrete wearing coat M-30 grade including reinforcement complete as per drawing and Technical Specifications Cl. 800 and 1206.3,B. Natural gravel

Providing Pressure relief pipes 100 mm dia. In bottom slab of box cell on a filter media base of 500x 500 mm as per drawing and technical specfication clause 1205.5.7

Providing and Laying Curtain wall complete as per drawing and Technical specification clause 1304, B) Cement Concrete Grade M-15

Flexible Apron :Construction of flexible apron 1 m thick comprising of loose stone boulders weighing not less than 40 kg beyond curtain wall.

Construction of RCC railing of M30 Grade in-situ with 20 mm nominal size aggregate, true to line and grade, tolurence of vertical RCC post not to exceed 1 in 500, centre to centre spacing between vertical post not to exceed 2000 mm, leaving adequat space between vertical posts for expansion, complete as per approved drawings and technical specifications.

Back filling behind abutment, wing wall and return wall complete as per drawing and Technical specification , 'II -Sandy material

Providing weep holes in brick/stone masonry abutment and return wall complete

Bhupen Gogoi

Bhabesh Saikia