Maintenance of PWD road from Kuripukur to IC Nagar (L_3point50km) under Amtali PWD (RnB) Sub_Division during the year 2025_26

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.

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

Manufacturing & Supplying of machine made PVC wire crates chain link type made by S.W.G PVC wire bearing 12/10 SW GI wire inside the PVC wire, Size of cage 1500mmx 600mmx 450mm having square mesh of 80mmx 80mm including carrying to the work site as per direction of the Engineer-in- charge(Weight of each cage shall not be less than 7.80kg)

Supplying and stacking mixed class bricks bats(50% first class & 50% sub-class) including carriage loading & unloading and spreading at the site of work complete as per direction of the Engineer-In-Charge.

Labour Charge for filling/packing of mixed class bricks bats in S.W.G PVC wire crates of size 1500mmx 600mmx 450mm fastening with SWG GI wire and placing in river bed/slope proprly as per direction of the Engg-In-Charge.

A. Without dewatering. Earth work in excavation for structure as per drawing and MoRD technical specification clause 305.1 in/c setting out construction of shoring & bracing removal setting out construction of shoring & bracing removal of stumps & other deleterious materials and disposal upto a lead of 50m dressing of sides & bottom and backfilling in trenches with excavated suitable materials. I) Ordinary soil. upto 3.0m depth.

Filling in foundation trenches as per drawing & MoRD technical specification clause 305.3.9, 1200. I) Sand filling.

Providing concrete for plain concrete(using jhama brick agg) in open foundation complete in/c form work as per drawing & MoRd technical speciification clause 802,803, 900,1202 and 1203 (in/c centering shutering staging etc but ex/c reinforcement .I0 PCC Grade M-10 (using jhama agg) (i)Nominal mix 1:3:6 .

Brick masonaryin cement mortar in foundation completed ex/c pointing plastering as per drawing & MoRD technical spcification clause 600, 1202 & 1203. (II) Brick masonary in 1:4 cement mortar.

Plastering with cement mortar (1:4) 12 mm thick on brickwork / C.C. work including a finishing coat of neat cement punning with 2.75 kg of cement per sqm in substructure as per MoRD technical specification Clauses 613.4 & 1204.

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

Maintenance of bituminous surface road Repair to pot holes by removal of failed material, trimming the sides to vertical and levelling the bottom, cleaning the same with compressed air or any appropriate method, filled with 75 mm B.M, after applying bitumen emulsion prime coat at the bottom and bitumen emulsion tack coat on sides and on bottom as per MoRD technical specification Clauses 1900, 502, 503 and 504.

Seal Coat on Old bituminous road surface Sand 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.

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.