Tender For Restoration Work Due To Cutting Of 13 Nos Pits By Bsnl For Laying Of Under Ground Ofc Cable From 4.50 Km To 6.63 Km Of Ghoshpara Road (At Shoulder, Mastic And Paver Block) Under Barrackpore Division, Pwd, During The Year 2024-25 - 1 Excavation for Structures Earth work in excavation of foundation of structures as per drawing and technical specification, including setting out, removing, spreading or stacking of spoils within a lead of 150 m. as directed and including trimming the sides of the trenches, leveling, dressing and ramming the bottom, and backfilling with approved material complete as per direction of the Engineer-in-Charge.I. In all sorts of soil excluding marshy soil & rocks (soft or hard) by manual means.a) upto 3 m depth (i) Without pumping out water and shoring 2 Earthwork infillinginfoundationtrenchesorplinthwith good earth, in layers not exceeding 150mm.including watering and rammingetc. layer by layercomplete. (Payment to be made on the basis ofmeasurement of finished quantity of work)(a) With earth obtained from excavation of foundation 3 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. 4 By Mix in Place Method :Construction of granular sub-base by providing graded material, mixing by mix in place method with Rotavator at OMC, spreading in uniform layers with Motor grader on prepared surface in proper grade and camber, compacting with vibratory roller to achieve the desired density, including lighting, guarding, barricading, including cost of all materials, machinery, tools and plants including cost of quality control complete as per Clause 401 of Specifications for Road & Bridge Works of MoRT&H (5th Revision). (i) Grading – I 5 (ii) Grading – V 6 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 surfaceand compacting with Vibratory Roller to achieve thedesired density, including supply of all materials, machinery, fuel and lubricants, including incidentalcosts for lighting, guarding, barricading, making earthen bundh to protect the edges including costof quality control completeas per Clause 406 of Specifications for Road & Bridge Works of MoRT&H (5th Revision). 7 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:(with primer @ 0.70-1.0 kg/sqm) 8 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). (i) On Bituminous Surface(Using Bitumen Emulsion at the rate of 0.20 to 0.30 kg per sqm.) 9 Bituminous Macadam using Mobile Hot Mix Plant (Light Duty) Providing and laying bituminous macadam with Mobile Hot Mix Plant (Light Duty) using approved crushed aggregates of specified grading as per Table 500.7 premixed with bituminous binder, transported to site laid over a previously prepared surface at specified laying temperature by means of approved and suitable arrangements to the required grade, level and alignment and rolledwith suitable power roller for break down, inter-mediate and finished rolling as per specification to achieve the desired compaction including cost and carriage of stone materials and bitumen, hire charges ofmachinery and equipment, cost of fuel and lubricants and wages of operational staff, quality control complete as per Specifications for Road & Bridge Works of MoRT&H (5th Revision). A. For Grading 1(40 mm nominal size, 80-100 mm thick.) 10 Open-Graded Premix Surfacing using Bituminous (Viscosity grade Paving Bitumen / Modified bitumen) Binder and Mobile Hot Mix Plant (Light Duty) 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 cleaningof the surface, screening, cleaning and pre-heatingstone chips and fully pre-coating the same eitherusing viscosity grade paving bitumen or cut-back or emulsion, carrying the mixture by any suitable arrangements, laying the mixture uniformly over the surface, 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 aggregatesto 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. 11 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 bitumenbinder, laying and spreading the mix at an uniform rateusing 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 Manual Means With Hot Bitumen Binder (@ 6.80 kg / 10 sqm.) 12 Supplying and laying in the specified patter of Interlocking Concrete Block Pavement (ICBP) with concrete blocks (with concrete grade as specified as per table 1 of IS 15658:2006) manufactured in steel mould clamed 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 vartical face of a paver block used as a device for keeping minimum joint gap in between the paving blocks, as per cl. no. 3.26 of IS:15658 with flexural strength/breaking land as per table 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 caushion of compacted bedding sand of 25-35 mm thick (grading of the bedding sand as per clause 6.5.1of IRC SP-63) and filling up the gaps in between paver blocks with joint filling sand (the gradding 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 CI no..........100 mm Thick.Grey. 13 Single Brick Flat Soling of picked jhama bricks including ramming and dressing bed to proper level and filling joints with local sand. 14 Plain / Reinforced Cement Concrete in Open foundation with or without reinforcements, in any part of foundation of bridges / culverts with graded stone chips of appropriate nominal sizes, including screening and cleaning of coarse aggregates, fine aggregate (sand) conforming to proper grading zone, both of approved quality and cement, as necessary, cost of curing with water, including cost and carriage of all materials and including preparation of design mix, approval of the same by the Engineer-in-Charge, cost for quality control,sampling, testing etc. including cost of formwork butexcluding reinforcement complete as per drawingand technical specifications.C PCC Grade M25I) Using concrete mixer 15 Add: SGST 9 % + CGST 9% = 18 % 16 Labour Wellfare Cess 1%
