West Bengal Industrial Infrastructure Development Corporation Tender

Single brick flat soling of picked jhama bricks including ramming and dressing bed to proper level and filling joints with loacal sand.

Construction of Sub Base using Local Materials, spreading in uniform layers with Motor grader on prepared surface, including screening the metal as necessary, mixing by mix in place method with Rotavator at OMC, and compacting with vibratory roller to achieve the desired density, lighting, guarding and barricading including cost and carriage of all materials and making necessary earthen bundh of one metre wide on each side to protect the edges complete as per Clause 401 of Specifications for Road & Bridge Works of MoRT&H (5th Revision). (i) For Construction of Sub Base by compacting 1st class brick aggregates (40 mm down) and sand (in proportion of 60:40). (200 mm Thick)

Providing, laying, spreading and compacting stone aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness, hand packing, rolling with vibratory roller 8-10 tonnes in stages to proper grade and camber, applying and brooming requisite type of screening / binding materials to fill up the interstices of coarse aggregate, watering including lighting, guarding, barricading and making necessary earthen bundh of one metre width on each side and preparing the bed by necessary cutting or filling, including cost of all materials and hire and labour charges of all men and machinery and compacting to the required density, as per Clause 404 of Specifications for Road & Bridge Works of MoRT&H(5th Revision). (i) Grading-II Aggregate (53 mm to 22.4 mm) Using Stone Screening Type B (11.2 mm). A) Manual Means - 200 mm thick in tWO layers( Thickness of each layer- 100mm)

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)

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 rolled with 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 of machinery 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 I (40 mm nominal size,80-100 mm thick.) For single layer 100 mm thick)

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 0.25 kg per sqm.)

(ii) On Bituminous Surface (Using Bitumen Emulsion at the rate of 0.275 kg per sqm.)

Providing & Laying 20mm thick open graded Premixed Carpet by Hot Mix Plant using 13.2 mm( @ 0.18 m3/ m2) and 11.2 mm ( @ 0.09 m3 /m2 )size stone aggregates (Pakur variety) including thorough cleaning of the surface, applying tack coat, screening, cleaning and preheating stone chips and fully precoating the same with hot matrix @ 54 Kg. per m3 of aggregates mix, Carrying the mixture by tipper trucks or by any other suitable arrangements, laying the mixture uniformly over the surface, with paver finisher, including manual operations as when required for proper level, grade and camber, thoroughly rolling by power roller including cost and carriage of stone chips and matrix, heating the matrix, preheating the aggregates to required temparature and including the hire charges of Hot Mix Plant and other machineries, pay of operators, cost of fuel and lubricants etc. all complete excluding cost of applying tack coat. a) Using Drum mix Type HMP of minimum capacity 40-60 TPH.

Supplying, laying premixed seal coat (type ‘B’)with approved quality grit @ 0.6m3 / 100 m2 ( Pakur variety ) and hot bitumen binder on thoroughly cleaned black top surface coated with tack coat, including heating mixing cleaned grit(100% passing through 2.36 mm sieve and retained on 180 u sieve) uniformly with hot binder ( @ 113.5kg/m3 of grit in Mobile Hot Mix Plant (Light Duty) 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 aggregates , cost of heating the binder and aggregates and all other incidental charges , cost of fuel and lubricants, including hire charges of mechineries, tools and plants required for construction and quality control complete excluding cost of applying tack coat. (a)IBy Manual Means, With Hot Bitumen Binder (@ 6.80 kg / 10 sqm.)