WBPWD/SE/NBCC II/NIT34/25-26

Box cutting or filling in Road embankment in all sorts of soil including spreading the spoils properly over the flank as necessary or on berm to approximate grade & camber and rolling the sub-grade with power roller to proper camber and grade as per direction and satisfaction of Engineer-in-charge including uprooting and removing plants and jungles when and where necessary. Upto 1200 mm depth.

750 mm depth.

Supplying, spreading and compacting Sand to required thickness, in layers not exceeding 150 mm to proper gradient and camber, inundating each layer by water and packing and ramming layer by layer to achieve desired compaction, including lighting, guarding, barricading and making adequate earthen bundh where necessary, curing with water as per direction, mending cracks and depressions by ramming wherever necessary. Cost of Fine Sand

Granular Sub-base with Graded Material (Table:- 400-1) Plant Mix Method: Construction of granular sub-base by providing graded material, mixing in Wet Mix Plant at OMC, carriage of mixed material to work site, spreading in uniform layers with Motor grader on prepared surface in proper grade and camber, compacting with vibratory power roller to achieve the desired density, including lighting, guarding, barricading, including cost of all materials, machinery, tools and plants and cost of quality control complete as per Clause 401 of Specifications for Road & Bridge Works of MoRT&H (5th Revision). Grading -V (Using Pakur Variety Aggregates)

Grading -III (Using Pakur Variety Aggregates)

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). (Using Pakur Variety Aggregates)

Primer Coat 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 / WMM Surface: (with primer @ 0.85 kg/sqm) (SS-1 Type)

Tack Coat: 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 Granular surfaces treated with primer (Using Granular surfaces treated with primer (Using Bitumen emulsion at the rate of 0.275 kg per sqm.) (RS-1 Type)

Dense Bituminous Macadam 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-I 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, vibratory and tandem rollers or with a pneumatic Tyre roller of 12 to 15 tone weight with a Tyre pressure of at least 0.56 map to achieve the desired density as per clause 505.3.5 all including cost and carriage of bitumen, 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 1 (37.5 mm nominal size, 75-100 mm thick.) Using Batch Type HMP of minimum capacity 100-120 TPH. VG 30 (Using Pakur Variety Aggregates)

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). 25 mm Thickness