WBPWD/RD/EE/THD/NIT5/26-27/1

Patching of potholes by draining water, cutting the pothole area to rectangular shape with vertical edges, removing all loose materials, screening and stacking the same for reuse with new materials as per requirement, filling the pothole area with additional volume of crushed stone materials of Pakur variety etc. and screenings as applicable, and compacting the same with static roller as per Water Bound Macadam Specification, including cost of all materials and machineries. Using Pakur variety Grading - 2 Aggregate (53 mm to 22.4 mm) @ 1.00 m3 & Pakur variety Stone Screening Type B (11.2 mm) @ 0.21 m3 per m3 of compacted volume. (The payment is to be made on the basis of loose net volume of coarse aggregate only consumed in the work)

Providing and applying primer coat with Cationic Bitumen Emulsion of MS grade packed 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 / WMM Surface: (with primer MS Grade [Pkd.] @ 0.85 kg/sqm)

Providing and applying tack coat with Cationic Bitumen Emulsion MS Grade [Pkd] 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 Bitumen emulsion MS Garde [Pkd] at the rate of 0.275 kg per sqm.)

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. [Tack coat is to be considered seperately] i) With pakur variety premixed Chips (22.4 mm @ 0.60 m3 and 11.2 mm @ 0.4 m3) with 54 kg of bitumen VG - 30 (Pkd.) per m3 of loose net volume of stone chips. Using Drum Mix Type 60-90 TPH ? Batch Type 100-120 TPH. (The payment is to be made on the basis of loose net volume of stone materials consumed in the work)

Providing, laying and rolling of Open - graded premix surfacing of 20 mm thickness composed of 13.2 mm (@ 0.018 m³ per m²) and 11.2 mm (@ 0.009 m³ per m²) size 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 carrying the mixture by any suitable arrangements, laying the mixture uniformly over the surface with pre application of tack coat using bitumen emulsion M.S. (Pkd.), including line, grade and level to serve as wearing course on a previously prepared base, including mixing in Drum Mix Type 60-90 TPH / Batch Type 100-120 TPH 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 Drum Mix Type 60-90 TPH / Batch Type 100-120 TPH 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. Over Bituminous surface treated with primer using tack coat @ 0.250 kg / m2

Over Granular surface treated with primer using tack coat @ 0.275 kg / m2

Providing and laying Premixed Seal Coat (Type B) with approved quality Stone grit @ 0.6 m3/ 100 m2 and bitumen binder on thoroughly cleaned black top surface coated with tack coat, including heating and mixing cleaned 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). By Manual Means With Hot Bitumen Binder VG - 30 (Pkd.) (@ 6.80 kg / 10 sqm.). Over freshly laid premixed surface with out tack coat.

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)

Dressing and chilchalling Road flanks including cutting and filling with earth up to 150 mm average thickness finished with outward cross-grade of 1 in 30. (Extra quantity of earth for filling shall be obtained from road side borrow pits.)