Maintenance of PWD road from Nabadiganta kalibari to pallan para to katania road via Chitta master house (L_1point20km) under Amtali PWD (RnB) Sub_Division during the year 25_26_SH_Carpeting, patch metalling, patch grouting etc with other allied work

Flat Brick Soling Providing and laying flat brick soling layer on prepared subgrade according to lines, grades and cross-section shown on the drawing, filling joints with Earth, free from clay with a Plasticity Index not exceeding 6, watering and rolling the same with three wheeled road roller 80-100 kN as per MoRD Technical Specification Clause 412.

Brick edging laid in full brick width Providing and laying brick edging on prepared subgrade according to lines, grades and cross-section shown on the drawing, filling joints with Earth, free from clay with a Plasticity Index not exceeding 6, watering and rolling the same with three wheeled road roller 80-100 kN as per MoRD Technical Specification Clause 412.

Surface Drains Construction of unlined surface drains of average cross-sectional area 0.40 sqm in ordinary soil to specified lines, grades, levels and dimensions. Excavated material to be used in embankment with a lift upto 3 m and lead of 50 m (average lead 25 m) as per MoRD Technical Specification Clause 307. (I) Surface Drains in Ordinary Soil (A) Manual Means

Maintenance of Earthen shoulder (stripping of excess soil) Stripping excess soil from the shoulder surface to achieve the approved level and compacting with plate compactor at OMC as per drawing and MORD technical specification clause 1903.

WBM Grading 3 Providing, laying, spreading and compacting brick aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness, hand packing rolling with three wheel roller 80-100 kN in 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

Providing and laying tack coat using hot straight run bitumen of grade VG- 30, including heating the bitumen, spraying the bitumen, cleaning and spreading the existing road surface as per specifications: On W.B.M @ 0.75 kg/ Sqm.

Providing and laying tack coat using hot straight run bitumen of grade VG- 30, including heating the bitumen, spraying the bitumen, cleaning and spreading the existing road surface as per specifications: On bitumen surface @ 0.50 kg/ Sqm.

20 mm thick Open - Graded Premix Carpet using Bituminous (Viscosity grade / modified bitumen) Binder Providing , laying and rolling of open-graded premix carpet of 20 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

Seal Coat Providing 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 means Case - IV : Type D (premix with fine sand) (I) Bitumen of VG 30

Patch repairing/Maintenance of bituminous surface road using jhama brick aggregate & Viscosity Graded bitumen (VG-30) Repairing pot holes and making up small depressions with ramming or power rolling after removal/ disposal of disintegrated materials within a lead of 50m, cutting pot holes to regular shapes with vertical edges and levelling the bottom, cleaning the same with compressed air or any other appropriate method including screening, cleaning of aggregates; and filling with jhama chips using bitumen of VG-30 @ 54 kg per m3 of loose volume of jhama brick chips, after applying tack coat of bitumen on sides and bottom @ 0.75 kg/sqm and finishing the top of repaired surface levelled with adjoining area in proper grade and camber including spreading of sand @ 0.006 cum/ sqm of prepared road surface as per direction of the Engg-in-charge and all as per MoRD technical specification Clause 1900, 502, 503 and 504.

Construction of Embankment with Material Obtained from Borrow Pits Construction of embankment with approved material obtained from borrow pits with a lift upto 1.5 m, transporting to site, spreading, grading to required slope and compacting to meet requirement of Tables 300.1 and 300.2 with a lead upto 10000 m as per MoRD Technical Specification Clause 301.5.

Single bamboo palasiding/ walling whole 2nd class bamboo(Jati or Betua) 65 to 75mm 2nd clas packed & driven @ 150mm c/c in/c fitting fixing with half bamboo kamis horizentally in three rows with cane or tying with wre completely and struts 1.50m apart longitudanally and providing bitumen drum sheet walling fixed with nails as per drawing MorRD tech specification clause 1302.5 i) Driven at least 900mm below ground level and 1200mm above ground level.