WBPWD/RD/EE/MHD/NIT1/26-27/3

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. By manual means : From 25 mm to 50 mm thick.

Mending Potholes and depressions by stitching picked jhama bricks with one brick-on-edge laid in herring bone pattern and including necessary cushion of sand below the soling (and in between layers) including cutting the pothole area to rectangular shape with vertical edges, removing all loose materials, finishing the surface to match with adjacent areas complete as per direction. One brick-on-edge laid in herring bond pattern (thickness 125 mm)

One brick-on-edge laid in herring bond pattern on a layer of brick flat (thickness 75 mm. plus 125 mm)

Water Bound Macadam Base Course 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 including lighting, guarding, barricading and making necessary earthen bundh of one metre width on each side and preparing the bed by necessary cutting or filling, including cost of all materials and hire and labour charges of all men and machinery and compacting to the required density, as per Clause 404 of Specifications for Road & Bridge Works of MoRT&H (5th Revision). Using Grading-2 Aggregate (53 mm to 22.4 mm) @ 1.21 m³/m³ and Stone Screening Type-B (11.2 mm) @ 0.24 m³/m³. By Manual Means

Prime Coat Supplying & providing and applying primer coat with Cationic Bitumen Emulsion of approved grade conforming to IS: 8887-1978 and requisite quantity on prepared surface of granular base including cleaning of road surface and spraying primer using Mechanical means including cost and carriage of bitumen emulsion and all other incidental costs of work complete as per Clause 502 of Specifications for Road & Bridge Works of MoRT&H (5th Revision). For WBM Surface: Using Cationic Bitumen Emulsion (S.S.-1 grade Pkd.) @ 0.85 Kg./m²

Repairing pot-holes and making up small depressions with ramming or power rolling including screening, cleaning chips or metals and washing, drying as necessary and heating the chips or metal where necessary, cutting pot holes to regular shapes with vertical edges, cleaning the disintegrated materials, heating matrix and applying tack coat (including sides), finishing the top of repaired surface levelled with adjoining area, including cost and carriage of stone aggregates and matrix, excluding cost of applying tack coat. With Pakur variety premixed Chips (22.4 mm @ 0.60 m3 and 11.2 mm @ 0.40 m3) with 54 kg of bitumen VG - 30 (Pkd.) per m3 of loose net volume of stone chips and Anti Stripping Agenet @ 0.5% by weight of binder (VG - 30 Pkd.) [depending up on size and stripping value of the aggregates] Using Mobile HMP (Light Duty). (The payment is to be made on the basis of loose net volume of stone materials consumed in the work)

Providing and applying tack coat with Cationic Bitumen Emulsion 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 Granular surfaces treated with primer. (Using RS - 1 grade Packed Bitumen emulsion @ 0.275 kg per sqm.)

On Bituminous surface. (Using RS - 1 grade Packed Bitumen emulsion @ 0.250 kg per sqm.)

Fog Spray Supplying & providing and applying Fog Spray using low viscosity (SS1 Type) Cationic bitumen emulsion for sealing cracks less than 3 mm wide or incipient fretting or disintegration in an existing bituminous surfacing including thoroughly cleaning of surface using scrubber and compressed air jets, applying SS1 type Bituminous Emulsion @ 0.75 kg / m2 using bitumen pressure distributor, including cost and carriage of all ingredients and hire and operational charges of all machinery, tools and plants including fuel, lubricants and cost of quality control as per Clause 513 of Specifications for Road & Bridge Works of MoRT&H (5th Revision).

Providing, laying and rolling of Open - graded premix surfacing of 20 mm thickness composed of 13.2 mm size (@ 0.018 m³ per m²) and 11.2 mm size (@ 0.009 m³ per m²) Pakur variety stone aggregates, including thoroughly cleaning of the surface, screening, cleaning and pre-heating stone chips and fully pre-coating the same either using viscosity grade paving bitumen [VG - 30 (Pkd.)] @ 1.46 kg / m2 and Anti Stripping Agenet @ 0.5% by weight of binder (VG - 30 Pkd.) [depending up on size and stripping value of the aggregates] carrying the mixture by any suitable arrangements, laying the mixture uniformly over the surface with pre application of tack coat using bitumen emulsion, including line, grade and level to serve as wearing course on a previously prepared base, including mixing in Mobile Hot Mix Plant (Light Duty) and thoroughly rolling with a smooth wheeled roller 8-10 tonne capacity, finished to required level and grades including the cost and carriage of stone chips and matrix, heating the matrix, preheating the aggregates to required temperature and including the hire charges of Mobile Hot Mix Plant (Light Duty) and other machinery, pay of operators, cost of fuel and lubricants etc. complete to be followed by seal coat of either Type A or Type B as per Technical Specification Clause 508 for Rural Roads of MORD.