WBPWRD/EE/PHD/eNIT-04/25-26/5

Hire and labour charges for staging with sal bullah for super structure of bridge (Major and Minor) including stripping off and removing clearing on completion of work as per design and drawing approved by the Engineer-in-charge

Cleaning the exposed corroded Reinforcement as well as wron out concrete by sand blasting with air compressure 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 coats of anti corrosive coatings of consumption as per the Manufacturers specification , cleaning etc complete as per the direction of the Engineer In Charge.

Removing corroded worn out portion of reinforcement (when the area of baris damaged by more than 25%) by cutting and replacing the same by a new plain round bar of requisite diameter by binding with required lap / weldingwith old bar, including cost of reinforcement, complete in all respect including removing unserviceable materials from site as per direction of the Engineer - in - charge. : Payment will be made on the basis of weight (Kg.) of new reinforcement which is to be executed.

Epoxy bonding of new concrete to old concrete entire surface of piers/walls

Removal of defective concrete, cleaning the surface thoroughly, applying the shotcrete mixture mechanically with compressed air under pressure,comprising of cement, sand, coarse aggregates,water and quick setting compound in the proportion as per clause 2807.1., sand and coarseaggregates conforming to IS: 383 and table 1 of IS:9012 respectively, water cement ratio ranging from0.35 to 0.50, density of gunite not less than 2000kg/cum, strength not less than 25 MPa andworkmanship conforming to clause 2807.6. (40 mm average thickness)

Guniting concrete surface with cement mortar (25 mm nominal thick) applied with compressor after cleaning surface and spraying with epoxy complete as per Technical pecification.)

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 cracks / porous concrete by injection process through nipples/Grouting complete as per Technical specification.Cement Grout

Applying epoxy mortar ( 10 mm nominal thick) over leached, honeycombed and spalled concrete surface and exposed steel reinforcement complete as per Technical specification

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 Technical Specifications Clause 202 for Rural Roads of MORD. Reinforced Cement Concrete

Earth work in excavation of foundation of structures as per drawing and technical specification, including setting out, removing, spreading or stacking of spoils within a lead of 150 m. as directed and including trimming the sides of the trenches, leveling, dressing and ramming the bottom, and backfilling with approved material complete as per direction of the Engineer-in-Charge .In all sorts of soil excluding marshy soil & rocks (soft or hard) by manual means. Up to 3m depth.With pumping out water including shoring as required.

Sand filling in foundation trenches and at the back of abutments, wing-walls etc. with good local fine sand free from earth in layers not exceeding 15 cm. including inundating each layer by profuse water and poking and ramming layer by layer complete including supply of sand. Quality of sand is to be approved by the Engineer-in-charge.

Plain / Reinforced Cement Concrete in Open foundation with or without reinforcements, in any part of foundation of bridges / culverts with graded stone chips of appropriate nominal sizes, including screening and cleaning of coarse aggregates, fine aggregate (sand) conforming to proper grading zone, both of approved quality and cement, as necessary, cost of curing with water, including cost and carriage of all materials and including preparation of design mix, approval of the same by the Engineer-in-Charge, cost for quality control, sampling, testing etc. including cost of formwork but excluding reinforcement complete as per drawing and technical specifications. PCC M-20 Grade (Using Concrete mixture)

Plain / Reinforced Cement Concrete in Open foundation with or without reinforcements, in any part of foundation of bridges / culverts with graded stone chips of appropriate nominal sizes, including screening and cleaning of coarse aggregates, fine aggregate (sand) conforming to proper grading zone, both of approved quality and cement, as necessary, cost of curing with water, including cost and carriage of all materials and including preparation of design mix, approval of the same by the Engineer-in-Charge, cost for quality control, sampling, testing etc. including cost of formwork but excluding reinforcement complete as per drawing and technical specifications. PCC M-30 Grade (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, 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. RCC M-25 Grade (Using Concrete mixture)

Supplying, fitting and placing HYSD bar reinforcement in Bridge Super-structure including initial straightening, straightening of coils bars,removal of loose rust (if any), cutting to requisite length bending, binding with annealed wire not lessthan 1 mm in size and conforming to IS 280 at everyintersection hooked and bent to correct shape and orms etc. including cost of blackannealed wire and cost of loading, unloading,carriage of all steel materials complete as perdrawing and technical specifications.

Replacement of Expansion Joints complete as per drawings. M-30 Grade Concrete.

Strip Seal Expansion Joint, 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.

Supplying. preparing and placement of ready mix non shrink cementious microconcrete having no metalic aggregate or chlorides for repairing and \iackting of damagedR.C.C.members. The micro concrete should achieve a compressive strength not less than 10 MPaafter 24 hours. 40 Mpa after 7 day and 50 Mpa aftre 28 days at 300C.It should have unrestrained expansion in between 1 to 4%. flexural strength shall not be less than 5MPaafter 28 days. Micro concrete should have a co-efficient of thermal expansion similar to that of the host concrete.

Providing and laying Mastic asphalt wearing course with paving grade bitumen meeting the requirements given in table 500-29 using approved coarse aggregate (Pakur Variet stone), fine aggregate, filler material and bitumen, prepared by using Mastic cooker including cost and carriage of all ingredients, cost of heating aggregates and binder, mixing in specified proportions conforming to approved Job Mix Formula and laid to required level and slope after cleaning the surface, compacting, sealing the construction joints and surface finishing conforming to specifications including providing antiskid surface with bitumen pre-coated fine-grained hard stone chipping of 13.2 mm nominal size at the rate of 0.005 cum per 10 sqm and at an approximate spacing of 10 cm center to center in both directions, pressed into surface when the temperature of surfaces not less than 100°C, protruding 1 mm to 4 mm over mastic surface, including the hire charges of all tools and plants and machinery, pay of operators, cost of fuel and lubricants and all other incidental charges and quality control all complete as per Clause 516 of Specifications for Road & Bridge Works of MoRT&H (5th Revision). 25 mm thickness.

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. Cement concrete blocks of size 0.30x0.3x0.3 m ocst in cement concrete of Grade M-15.

Anti Carbonatian caating for pratectfon of Co_ Surface from Carbonation by with two coots Single component solvent free, cold applied, pure acrylic polymer, (Anti carbonotion cooting) breothable, elastomerlcon a water based priming coot (Total 3 (three) coolS Includingpriming coots) having 50% elongation property, UVresistant capacity, non-toxic with Dsthetic ,,'ew, eco /rlendly andlow VOC(Volotlle OrganiCCompound)moterlal. The product complies with the requirement as laid out in as per ASTM 0822. RecommendedDFT(Dry Film thickness): 100 -lID microns per coot. Topcoot mayhave with 5" - 10% dilution if required and anti carb primer with lC1M' dilution with approx. DFT:20 micron. Total system OFT should not be less than 230 micron lor getting better anticarbonatlon property on concrete sur/ace as per direction 0/ Engineer -In.charge. Note.- l} Therote is exclusive0/ the cost 0/ scaffolding. 2}It may be used/or the exposedsur/aces0/ Concretestructures. 3} Thisitem shall be executedonly after specificInstruction Superintending Engineer of the respective circle.

Drainage Spouts in Superstructure including providing drip mouldings and also including supplying, fitting and fixing approved type of materials complete as per drawing and Technical specification vide clause no. 2705 of MoRT&H’s Specification for Road & Bridge Works.

Providing and laying of hot applied thermoplastic compound 2.5 mm thick including reflectorising glass beads @ 250 gms per sqm area, thickness of 2.5 mm is exclusive of surface applied glass beads as per IRC:35. The finished surface to be level, uniform and free from streaks and holes complete as per Clause 803 of Specifications for Road & Bridge Works of MoRT&H (5th Revision).

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