RIDF-XXVII/Cachar/02 Construction of balance work of RCC Bridge No.4/1 over river Chiri on Sibpur Lakhipur road including approaches and protection works under RIDF-XXVII of NABARD for the year 2021-22 under PWD, Lakhipur Territorial Road Division

Amount

1) Sub-way Temporaty Bamboo Bridge:- Construction of temporary Bamboo bridge of 3.70m clear road way with Bholuka or Barua Bamboo post 5nos. in each rows driven at least180cm. below ground level and rows not more than 150cm apart from center to center Bholuka or Barua Bamboo dham longitudinal groth both closely placed and tied with half bamboo 90cm to 120cm apart in both layers and ttwo layers of jati bamboo chattais ( top layer should be digonally woven), 70 mm to 100 mm thick brushwood in between chattias should be tied with half jati bamboo on both ends, bamboo railing with bholuka or barua bamboo post placed at150cm apart jati or betua bamboo hand rails of two lines both side of every alternate rows.All tying must be done with cane or coir string and only mature bamboo should be used in work.

2) Bridge Proper: Plain/Reinforced cement concrete, in sub structure complete as per drawing and technical specification and steel shuttering formwork N. without Plasticiser F. RCC Grade M25(Using Concrete mixer) I) Height up to 5.0m

Supplying, fitting and placing TMT IS:1786 (Fe 500) bar reinforcement in sub-structure complete as per drawing and technical specifications. (a) TMT-IS 1786 ( Fe-500 D) Primary Producer (TATA/ SAIL/ Esser Steel/ Jindal panther steel/ Shyam steel or equivalent)

Supplying, fitting, and fixing in position true to line and level cast steel rocker bearing conforming to IRC:83 (Pt.-1) section IX and clause 2003 of MoRTH specifications complete including all accessories as per drawing and Technical Specifications MORTH Section 1000,2000,2200

Supplying, fitting, and fixing in position true to line and level forged steel roller bearing conforming to IRC:83 (Pt.-1) section IX and clause 2003 of MoRTH specifications complete including all accessories as per drawing and Technical Specifications at MORTH Section 1000,2000,2200

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

Structural steel Built-Up-Girder (BUG) (Providing and launching Steel Truss of Structural steel BUG Super Structure including painting complete as per as per drawing and technical specifications under Section 1900 of MOST.)

Furnishing and Placing Reinforced/Prestressed cement concrete in super-structure as per drawing and Technical Specification' including steel shuttering formwork. N. without Plasticiser C. RCC Grade M25 ( Using Concrete Mixer) (I) For solid slab super-structure (b) Height 5.0 m to 10.0 m

Reinforcement in Super Structure: Supplying, fitting and placing TMT conforming to IS:1786 Fe 500 D reinforcement in super-structure including splicing complete as per drawing and technical specifications (a) TMT-IS 1786 ( Fe-500 D) Primary Producer (TATA/ SAIL/ Esser Steel/ Jindal panther steel/ Shyam steel or equivalent)

Providing and laying Cement concrete wearing coat M-30 grade including reinforcement complete as per drawing and Technical Specifications

Construction of precast RCC railing of M30 Grade, aggregate size not exceeding 12 mm, 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.

Drainage spouts complete as per approved drawings and technical specifications.

Providing and laying strip seal expansion joint catering to maximum horizontal movement up to 70mm, complete as per approved drawings and standard specifications to be installed by the manufacturer/ supplier or their authorised represantative ensuring compliance to the manufacturar's instructions for installation.

PCC M15 Grade leveling course below approach slab complete as per drawing and Technical specification

Reinforced cement concrete approach slab including reinforcement and formwork complete as per drawing and Technical specification (a) TMT-IS 1786 ( Fe-500 D) Primary Producer (TATA/ SAIL/ Esser Steel/ Jindal panther steel/ Shyam steel or equivalent)

3) Protection 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. A. Stone/Boulder

Providing and laying filter material underneath pitching in slopes complete as per drawing and Technical Specification.

Providing and laying boulders apron on river bed for protection against scour with stone boulders weighing not less than 40 kg each complete as per drawing and Technical specification. A. Boulder laid dry without wire crates.

4) Road and Approach Work: Construction of Embankment with materials obtained from borow pits, with all lifts and lead , transporting to site, spreading, grading to required slope and compacting to meet requirement of table 300 - 2 (including cost of testing of materials at site and laboratory as directed by the deptt.) (a) from private land

Construction of Sub grade and Earthen Shoulders with approved materials obtained from borow pits, with all lifts and lead, transporting to site, spreading, grading to required slope and compacting to meet requirement of table 300 - 2 (including cost of testing of materials at site and laboratory as directed by the deptt.) (a) from private land

Construction of Granular sub base by providing coarse graded material, spreading in uniform layers with motor grader on prepered 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 (with initial lead of 5 km) (ii) for grading -II material

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, (with an initial lead of 5 km) A. By manual means (II) Grading -III material (b) using screening type-A

Providing and laying Interlocking Concrete Block Pavement (ICBP) conforming to IS:15658-2006 including all lead and lift complete as per technical specification and as directed. (a) 80mm thick interlocking precast blocks having compressive strength of 40N/sq.mm.

Providing and laying Interlocking Concrete Block Pavement (ICBP) conforming to IS:15658-2006 including all lead and lift complete as per technical specification and as directed. ( c) Providing and laying M-40 grade cement concrete Edge block/ Edge restraints complete as per Technical specification clause 1504.