WBPWD/SE/WC-I/ENIT-05/26-27/1

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. (b) By mechanical means (without milling machine) : (ii) From 50 mm to 100 mm thick.

(c) By mechanical means (with milling machine) : Cold milling of Bituminous Pavement surface upto the required depth by mechanical means using milling machine, without disturbing the under laying layers, to proper line and level, cleaning the surface properly after milling and removing the loose materials, stacking the milled materials for re-use, necessary guarding, barricading & lighting, including hire charges of machinery, cost of fuel and labour and other incidental charges all complete and as per direction of Engineer-in-charge. (i) For depth upto 100mm

Wet Mix Macadam Base Course Providing, laying, spreading and compacting graded stone aggregate to Wet Mix Macadam specification including screening of aggregates and granular materials, premixing the material with water at OMC in Wet Mix Plant, carriage of mixed material by tipper to site, laying in uniform layers with Paver in Sub- base / Base course on well prepared surface and compacting with Vibratory Roller to achieve the desired density, including supply of all materials, machinery, fuel and lubricants, including incidental costs for lighting, guarding, barricading, making earthen bundh to protect the edges including cost of quality control complete as per Clause 406 of Specifications for Road & Bridge Works of MoRT&H (5th Revision).

Water Bound Macadam Sub Base by consolidating Jhama metal of specific size in hard crust to requisite thickness (measured after compaction) in layers including screening of metals etc. as necessary, hand packing, sweeping, watering and rolling in stages with power roller to proper line, grade and camber, lighting, guarding & barricading and making necessary earthen bundh of one metre width on each side where necessary to protect edges and preparing the bed by necessary cutting or filling and rolling all complete including the cost of all materials and hire and labour charges of all men and machineries and compacting to the required density, as per Clause 404 of Specifications for Road & Bridge Works of MoRT&H (5th Revision). (i) For Construction of Sub Base by consolidating Jhama metal (63 mm to 45 mm) with moorum screening :

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). (i) For WBM / WMM Surface: (Using Cationic bitumen emulsion (MS, Bulk) @ 0.85 kg/sqm)

Providing and laying dense bituminous macadam with Hot Mix Plant using crushed aggregate of specified grading , filler (Cement/ hydrated lime/ Rock dust) premixed with bituminous binder of approved grade @ 4.0% (min) for Grading - 1 and 4.5% (min) for Grading -2 by weight of total mix as per Table 500-10 and mix design done as per Table 500-11 and job mix formula as per clause 505.3.3 of MoRT&H (5TH Revision), including screening cleaning of chips, transporting the hot mix to work site, laying the mixed materials at specified laying temperature, as specified in Table 500-2 with a hydrostatic paver finisher with sensor control to the required grade, level and alignment over prepared surface coated with tack coat, rolling with smooth wheeled and vibratory or tandem rollers or with a pneumatic tyre roller of 12 to 15 tonne weight with a tyre pressure of at least 0.56 MPa to achieve the desired density as per clause 505.3.5, all including cost and carriage of bitumen, crushed aggregates, filler materials and hire charges of machinery and equipment for construction and quality control, complete as per Clause 505 of Specifications for Road & Bridge Works of MoRT&H (5th Revision). For Grading 2 (26.5 mm nominal size, 50-75 mm thick.) Using Batch Type HMP of minimum capacity 100-120 TPH. Using hydrated lime and VG-40 (Bulk) Bitumen

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). (ii) On Granular surfaces treated with primer (Using Bitumen emulsion (MS, Bulk) at the rate of 0.275 kg per sqm.)

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

Providing and laying bituminous concrete with Hot Mix Plant using crushed aggregates, filler materials (cement/ hydrated lime/ Rock dust) and premixed with bituminous binder of specified grading @5.2% (min) for Gr.-1 & 5.4% (min) for Gr.-2, as per table 500-17 and mix design done as per table 500--10 and job mix formula as per cl. 505.3.3 including screening, cleaning of chips and preparing a uniform and quality mix, transporting the Hot Mix to work site, laying the mixed materials at specified laying temperature as specified in Table 500-2 with a hydrostatic paver finisher with sensor control to the required grade, level and alignment over prepared surface coated with tack coat, rolling with smooth wheeled and vibratory or tandem rollers or with a pneumatic tyre roller of 12 to 15 tonne weight with a tyre pressure of at least 0.56 MPa, to achieve the desired density as per clause 505.3.3 including cost and carriage of bitumen, crushed aggregates, filler materials and hire charges of machinery and equipment for construction and quality control, complete as per Clause 507 of Specifications for Road & Bridge Works of MoRT&H (5th Revision). For Grading 2 (13.2 mm nominal size, 30mm/40 mm thick.) (i) Using Batch Type HMP of minimum capacity 100-120 TPH. Using hydrated lime and VG-40 (Bulk) Bitumen

Mastic Asphalt Providing and laying Mastic asphalt wearing course with paving grade bitumen meeting the requirements given in table 500-29 using approved coarse aggregate, 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). (i) 25 mm thickness With 10/20 gr. packed bitumen