WBPWDRoadsEEBNHDNIT03/26-27-2

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): i) From 25 mm to 50 mm thick.

Supplying and Laying in the specified pattern of Interlocking Concrete Block Pavements (ICBP) with concrete blocks (with concrete grade as specified as per Table 1 of IS 15658:2006) manufactured in steel mould clamped to a vibrating table by hydraulic pressure (as per cl. no, 6.30 of IRC SP: 63 (2018), from BIS licensee manufacturer, with spacer nib (Small protruding profiles on the vertical face of a paver block used as a device for keeping minimum joint gap in hetween the paving blocks, as per CL. No 3.26 of IS: 15658)and of specified size and shape with aspect ratio (The ratio of length to thickness of a paver block, as per CLNo.3.3 of IS: 15658) as per Table 2 of 15:15658 with flexural strength/breaking load as per Annexure G of IS:15658, on the prepared base course of specified CBR as per Table 1 of IRC SP 63 (2018) or else as mentioned in design and drawing with a cushion of compacted bedding sand of 25-35 mm thick (grading of the bedding sand as per clause 6.5.1 of IRC SP-63) and filling up the gaps in hetween paver blocks with joint filling sand (the grading of the joint filling sand will be as per clause 6.5.2 of IRC SP 63) and completing the edges with cut blocks as per Cl. No. 8.7 of IRC SP-63(2018) with proper confinement of bedding and joint filling sand, compaction.levelling and filling up of the edge gap. 100 mm thick. Grey

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). (i) On Bituminous Surface (Using Bitumen Emulsion at the rate of 0.20 to 0.30 kg per sqm.)

Providing and laying Premixed Seal Coat (Type B) with approved quality sand/grit @ 0.6 m3/ 100 m2 and bitumen binder on thoroughly cleaned black top surface coated with tack coat, including heating and mixing cleaned sand/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). I By Mechanical Means, (i) With Hot Bitumen Binder (@ 6.80 kg / 10 sqm.)

Cutting kutcha drain of 600 mm wide and depth up to 300 mm, including disposal of excavated material in embankment slopes within a lead of 50 m. Through ordinary soil.

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.

GST-18% (sgst=9% & cgst=9%)ADD

WEST BENGAL LABOUR WELFARE CESS=1% ADD