Construction Of Retaining Wall At Different Chainages On Construction Of Retaining Wall At Different Chainages On Ambassa-Gandacherra Road Under Gandacherra Sub-Division Within The Jurisdiction Of Ambassa Division, Pwd ( Rnb ) During The Year 2020-21
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Project Description
Construction Of Retaining Wall At Different Chainages On Construction Of Retaining Wall At Different Chainages On Ambassa-Gandacherra Road Under Gandacherra Sub-Division Within The Jurisdiction Of Ambassa Division, Pwd ( Rnb ) During The Year 2020-21 / Sh Periodical Renewal Of Ambassa-Gandacherra Road From
BOQ
| Sl. No. | Item Description |
| 1 | GRANULAR SUB-BASES, BASES(Non-Bituminous) AND SHOULDERSWater Bound Macadam Sub-Base / Base using Jhama Brick Aggragate2) WBM Grading - 3Providing, laying, spreading and compacting jhama brick aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness, hand packing rolling with three wheel roller 80-100 kNin stages to proper grade and camber, applying and brooming binding materials to fill up the interstices of coarse aggregate, watering and compacting to the required density Grading- 3 as per MoRD Technical Specification Clause 405.(A) By Manual Means |
| 2 | BASES AND SURFACE COURSES (BITUMINOUS)Prime Coati) Low porosityProviding and applying primer coat with bitumen emulsion (SS-1) on prepared surface of granular base including cleaning of road surface and spraying primer at the rate of 0.70- 1.00 kg/sqm using mechanical means as per MoRD Technical Specification Clause 502. |
| 3 | Tack coat iii) Providing and applying tack coat with bitumen emulsion (RS-1) using emulsion distributor at the rate of 0.25 to 0.30 kg per sqm on the prepared granular surface treated with primer & cleaned with Hydraulic broom as per MoRD Technical Specification Clause 503. |
| 4 | 25 mm thick Open-Graded Premix Carpet using Bituminous (Viscosity grade/ modified bitumen) BinderProviding, laying and rolling of open-graded premix carpet of 25 mm thickness composed of 13.2 mm to 5.6 mm aggregates either using Viscosity grade bitumen or emulsion to required line, grade and level to serve as wearing course on a previously prepared base, including mixing in a suitable plant, laying and rolling with a three wheel 80 - 100 kN static roller capacity, finished to required level and grades to be followed by seal coat of either Type A or Type B or Type C or Type D as per MoRD Technical Specification Clause 508.Case - I : By Manual Means(i) Bitumen of VG-30 |
| 5 | Seal CoatProviding and laying seal coat sealing the voids in a bituminous surface laid to the specified levels, grade and cross fall using Type A or Type B or Type C or Type D as per MoRD Technical Specification Clause 510.A. By Manual MeansCase - IV : Type D (premix with fine sand)(I) Bitumen of VG-30 |
| 6 | Seal coat on old bituminous road surfaceSand seal coat on old bituminous road surface by applying Viscosity Graded (VG-30) bitumen @ 1.00 kg per sqm using rubber brush after proper cleaning of the road surface and spreading of river sand @0.06 cum/10 sqm complete as per specification and direction of the Engg.-in-Charge. |
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