Public Works Roads Department Tender

Cleaning the exposed corroded Reinforcement as well as worn out concrete by sand blasting with air compressor including all materials, hire charges of machineries and labour etc. all complete as per technical specification and direction of the Engineer -in-Charge.

Providing anti - corrosive protective coating to inhibit the corrosion to HYSD reinforcements including two coat s of anti - corrosive coatings of consumption as per manufacturer's specificati on, cleaning etc. compl ete as per the direction of the Engineer - in - Charge.

Removing correded wornout portion of reinforcement (when the area of baris dammaged by more than 25%) by cutting and replacing the same by a newplan round bar of requiste diameter by binding with required lap- welding with old bar, including cost of reinforcement, complete in all respect including removing unserviceable materials from site as per direction of the engineer -in-charge.Note: payment on weight(kg) of new reinforcement.

Epoxy bonding of new concrete to old concrete

Providing and laying of a strip seal expansion joint catering to maximum horizontal movement upto 80 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 instructions for installation.

Providing and fixing in position 20 mm thick pre - moulded joint filler in expansion joint for fixed ends of simply supported spans not exceedi ng 10 m to cater for a horizontal movement upto 20 mm, covered with sealant complete as per drawing and technical specifications.

Providing and filling joint sealing compound as per drawings and technical specifications with coarse sand and 6% bitumen by weight.

Supplying, fitting and fixing G.I pipes of tata make with all necessary accessories, specials viz. socket,bend,tee,union,cross,elbo,nipple,long screw, reducing socket, reducing tee,short piece etc fitted with houlder bats clamps, including cutting pipes, making threads, fitting fixing etc complete in all respect including cost of all necessary fittings as required, jointing materials and two coats of painting with approved paint in any position above ground( payment will be made on the centre line measurement of total pipe including all specials. no seperate payment will be made for accessories, specials payment for painting will be made seperatelly(100 mm dia heavy quality).

Patching of damaged concrete surface with polymer concrete (25 mm nominal thick) and curing compounds, initiator and promoter, available in present formulations, to be applied as per instructions of manufacturer and as approved by the Engineer.

Applying Epoxy Mortar (10mm nominal thick) over leached, honey combed and spalled concrete surface and exposed steel reinforcement complete as per Technical Specification.

Providing and inserting nipples with approved fixing compound after drilling holes for grouting as per Technical specifications including subsequent cutting/removal and sealing of the hole as necessary of nipples after completion of grouting with Cement/Epoxy.

Sealing of Crack/porous concrete with Epoxy Grout by injection through nipples complete as per clause 2803.1

Dismantling of existing structures like culverts, bridges, retaining walls and other structure comprising of Brick masonry, cement concrete, steel work, including disposal of unserviceable material and stacking the serviceable material with all lifts and lead of 1000 m as per Technical Specifications Clause 202 for Rural Roads of MORD. Lime Motar.

Dismantling of existing structures like culverts, bridges, retaining walls and other structure comprising of masonry, cement concrete, 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 Technic al Specifications Clause 202 for Rural Roads of MORD. By manual means RCC Structures

Providing and laying Design Mix concrete for plain / reinforced concrete work in any part of bridge (excluding bottom plugging) with coarse aggregates of appropriate nominal size and grading, fine aggregate (sand) conforming to proper grading zone, both of approved quality and cement, as necessary, including labour, cost and carriage of all materials and including preparation of design mix, approval of the same by the Engineer-in-Charge and cost for quality control, sampling, testing etc. all complete but excluding. Grade- M-15 ( Using concrete mixture)

Plain / Reinforced Cement concrete in Sub-structure with coarse aggregates of appropriate nominal size and grading, fine aggregate (sand) conforming to proper grading zone, both of approved quality and cement and water reducing admixtures, as necessary, including labour, cost and carriage of all materials and including preparation of design mix, approval of the same by the Engineer-in-Charge and cost for quality control, sampling, testing etc. all complete as per drawing and technical specification including the cost of necessary form work and staging complete. as per drawing and technical specifications. Grade- M-35 ( Using concrete mixture)

Providing weep holes in Brick masonry / Plain / Reinforced concrete abutment, wing wall/ return wall with 100 mm dia AC pipe, extending through the full width of the structure with slope of 1V:20H towards drawing face. Complete as per drawing and Technical specifications.

Supplying, fitting and placing HYSD bar reinforcement in Bridge Sub-structure including initial straightening, straightening of coils bars, removal of loose rust (if any), cutting to requisite length bending, binding with annealed wire not less than 1 mm in size and conforming to IS 280 at every intersection hooked and bent to correct shape and placed on forms etc. including cost of black annealed wire and cost of loading, unloading, carriage of all steel materials complete as per drawing and technical specifications and direction of Engineer-in-Charge. (TATA, SAIL, RINL)

Picking up and removing old bituminous layer or sand sealing coat from old black topped surface and cleaning the exposed surface by scraping and stacking the material as directed. (Thick 50 to 100 mm)

Construction of Sub Base using Local Materials: Construction of Sub Base using Local Materials, spreading in uniform layers with Motor grader on prepared surface, including screening the metal as necessary, mixing by mix in place method with Rotavator at OMC, and compacting with vibratory roller to achieve the desired density, lighting, guarding and barricading including cost and carriage of all materials and making necessary earthen bundh of one metre wide on each side to protect the edges complete as per Clause 401 of Specifications for Road & Bridge Works of MoRT&H (5th Revision). (i) For Construction of Sub Base by compacting 1st class brick aggregates (40 mm down) and sand (in proportion of 60:40).

Providing and applying tack coat with Cationic Bitumen Emulsion of approved grade conforming to IS: 8887-1978 on the prepared surface cleaned with Hydraulic broom, moistening the surface including cost and carriage of emulsion, hire charges of machinery and labour, cost of fuel and lubricants all complete as per Clause 503 of Specifications for Road & Bridge Works of MoRT&H (5th Revision). On Concrete surfaces (Using Bitumen emulsion at the rate of 0.30 kg per sqm.)

On Bituminous Surface (Using Bitumen Emulsion at the rate of 0.25 kg per sqm.)

Providing and laying bituminous macadam with Mobile Hot Mix Plant Light duty using approved crushed aggregates of specified grading as per Table 500.7 premixed with bituminous binder, transported to site laid over a previously prepared surface at specified laying temperature by means of approved and suitable arrangement to the required grade, level and alignment and rolled with suitable power roller for break down, inter-mediate and finished rolling as per specification to achieve the desired compaction including cost and carriage of stone materials and bitumen, hire charges of machinery and equipment, cost of fuel and lubricants and wages of operational staff, quality control complete as per Specifications for Road & Bridge Works of MoRT&H (5th Revision). Grade-II (19 mm nominal size 50 to 75 mm thick)

Open Graded Premix Surfacing with using Bituminous (Viscosity grade paving bitumen/Modified Bitumen) Binde and Mobile Hot Mix Plant(Light Duty) Providing , laying and rolling of open graded premix Surfacing of 20 mm thickness composed of 13.2 mm (@ 0.018 m3/m2) and 11.2 mm (@ 0.009 m3/m2) size stone aggregates, including thoroughly cleaning the surface,Screening, cleaning ans pre heating applying stone chips and fully precoating the same either using viscosity grade paving Bitumen or Cut Back or Immulsion, carrying the mixure by any suitable arrangements laying the mixture uniformly over the surface including line, grade and level to serve as wearing course on a previously prepared base including mixing mobile hot mix plant(Ligh Duty) and thoroughly rolling with a smooth wheeled roller 8-10 ton Capacity, finished to require level and graded including the cost and carriage of stone matrix, heating the matrix, preheating the aggregates to required temperature and including hire charges of Mobile Hot Mix Plant(Light Duty) and othe mechineries, Pay of Operators, Cost of Fule and Lubricants etc. complete to be followed by Seal Coat either Type A or Type B as per Technical Specification Clause 508 for Rural Roads of MORD.

Providing and laying Premixed Seal Coat (Type B) with approved quality sand/grit @ 0.6 m3/ 100 m2 and bitumen binder on thoroughly cleaned black top surface coated with tack coat, including heating and mixing cleaned sand/grit (100 % passing through 2.36 mm sieve and retained on 180 micron sieve) uniformly with bitumen binder, laying and spreading the mix at an uniform rate using suitable means, brushing the surface, if necessary, to ensure uniformity, followed by rolling with power roller including the cost and carriage of binder and aggregates, cost of heating the binder and aggregates and all other incidental charges, cost of fuel and lubricants, including hire charges of machineries, tools & plants required for construction and quality control complete as per Clause 511 of Specifications for Road & Bridge Works of MoRT&H (5th Revision). I By Mechanical Means (i) With Hot Bitumen Binder (@ 6.80 kg / 10 sqm.)

Painting the vertical end faces of posts, wheel guards or railing or parapet with alternate bands of different colours as directed by the Engineer-in-charge with approved synthetic enamel paint. (Two coats).

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.

Supplying preparing and placement of ready mix non shrink cementious microconcrete having no metalic aggregate or chlorieds for repairing and/iacking of damage RCC members. The microconcrete should achive a compreshive strein not lesthan 10 MPa after 24 hours 40 MPa after 7 days and 50MPA after 28 days at 300C it should have unrestrained expansion in between 1 to 4% flexral strength shall not be less than 5 MPA after 28 days. Microconcrete should have a coefficient of thermal expansion similar to that of the host concrete .

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