SL Discreption of itme Quantity 1. WFW: Earth filling work specified soil in any type of embankment and bridge approaches including cutting, carrying, filling by throwing earth in layers not more than 150mm in each layer in proper alignment, grade, camber and side slope in all types of soil other then rocky, gravely and slushy including benching not more than 30cm vertical and 60cm horizontal steps along the sides while widening any embankment, etc. all complete as per direction of E-I-C. Earth is not be borrowed from the road side for all lead (Payment will be made on compacted volume) Up to 2.50m lift from the toe of embankment. 2 Earth work in excavation in foundation of structures by mechanical (Hydraulic excavator- Long Boom)/ manual means in all sorts of soil up to specified depth in accordance with requirement of lines, grades, cross section and elevation as shown in the drawing including setting out, removal of stumps, logs, boulders and other deleterious materials, providing necessary tools and plants, construction of shoring and bracing cleaning the excavated materials to a safe distance out of the site premises, cut to a firm surface including pumping/balling out water, removal of spoils to a safe distance, dressing of sides and bottom and backfilling of trenches up to original level with approved material etc. all complete as per approval of E-I-C. Contractor shell get acquainted with site conditions, nature of soil and adopt suitable adequate dewatering system as deemed fit for the nature of soil and prevailing water table to get the surface reasonably dry for laying PCC at the time of execution so that execution will not be hampered or delayed. Back-filled materials shall be compacted to a density comparable with the adjacent undisturbed material. Earth work in Ordinary Soil by Manual Means for an Initial lead up to 30m. For depth up to 3m. 11.073 3 Sand filling on the prepared foundation bed with sand of Specified FM in layers not more than 150mm thick including necessary carriage, leveling, watering ramming to achieve minimum dry density (MDD) of 95% STD compaction with optimum moisture content (OMC) by remaining each layer up to finished level as per direction of the E-I-C. Send of minimum FM 0.8 6.480 4 Single layer brick flat soling with 1st class or picked kiln burnt bricks in foundation, filling the interstices tightly with sand of minimum FM 0.50, watering, leveling, dressing, etc. all complete as per instruction of the E-I-C 0.972 5 Brick work with 1st class brick in specified cement morter in foundation with send of minimum FM 1.20 and cement conforming to BDS EN 197-1: 2003 CEM-II/A-M 42. 5N, filling the interstices tightly with mortar, raking out joints, cleaning and soaking bricks at least for 24 hours before use, washing of sand, curing for requisite period, etc. all complete as per design, specification & direction of the E-I-C. Cement morter (1:4) 0.648 6 Minimum 3mm thick cement plaster including neat cement finishing over concrete faces with sand of minimum FM 1.20 and cement conforming to BDS EN 197-1: 2003 CEM-II/A-M 42. 5N, including washing of send, cleaning junctions of concrete, grouting, dabbing, doing independent double-legged scaffolding, finishing the edges and corners, cleaning of surfaces and curing for requisite period etc. all complete at all leads & lifts as per drawing, specification & direction of the E-I-C. Cement morter (1:4) 1.876 7 RCC-17BCCM: Reinforced cement concrete work with minimum cement concrete relates to nominal mix ratio 1:2:4 and maximum water cement ratio 0.45 having minimum required average strength, f cr=24 Mpa and satisfying a compressive strength, f cr=17 Mpa at 28 days on standard cylinders as per standard practice of code AASHTO/ASTM and cement conforming to BDS EN 197-1: 2003 CEM-II/A-M 42. 5N, send of minimum FM 1.8 and 20mm down well graded crushed picked brick chips (LAA value & maximum water absorption not exceeding 38&15% respectively) conforming to gradation requirement as per ASTM C 33 including screening chips thorough proper sieves, cleaning, placing shutter in position, making shutter water-tight properly, placing reinforcement in position, mixing and standard mixture machine with hoper, fed by standard measuring boxes, maintaining allowable slump of 50mm to 100mm, casting in forms compacting by mechanical vibrator machine, curing for 28 days, removing centering-shuttering after approved specified time period, other incidental charges, etc. all complete in all respect as per direction of the E-I-C. the cost of reinforcement and it’s fabrication, welding, coupling, placing binding etc. is not included in this unit rate. Additional quantity of cement to be added if required to attain the specified strength at the contractor’s own cost. Note: Using Concrete Mixer For well curb, well caps, pile caps, abutment base of bridges and bottom slab of box culverts. 0.122 8 RCC-20SCCM: Reinforced cement concrete work with minimum cement concrete relates to nominal mix ratio 1:2:4 and maximum water cement ratio 0.45 having minimum required average strength, f cr=28.5 Mpa and satisfying a compressive strength, f cr=20 Mpa at 28 days on standard cylinders as per standard practice of code AASHTO/ASTM and cement conforming to BDS EN 197-1: 2003 CEM-I 52.5N/ASTM C150 type-1, high range water reducing admixture of complying type A or F under ASTM C 494 (Doses of admixture to be fixed by the mix design), send of minimum FM 2.2 and 20mm down well graded crushed stone chips broken from boulders (preferably stone chips from Madhyapara, Dinajpur, LAA value not exceeding 30) conforming to ASTM C33 including screening chips through proper sieves, cleaning, placing shutter in position, making shutter water-tight properly, placing reinforcement in position, mixing and standard mixture machine with hoper, fed by standard measuring boxes, maintaining allowable slump of 75mm to 100mm, casting in forms compacting by mechanical vibrator machine, curing for 28 days, removing centering-shuttering after approved specified time period, other incidental charges, etc. all complete in all respect as per direction of the E-I-C. the cost of reinforcement and it’s fabrication, welding, coupling, placing binding etc. is not included in this unit rate. Additional quantity of cement to be added if required to attain the specified strength at the contractor’s own cost. Note: Using Concrete Mixer For well curb, well caps, pile caps, abutment base of bridges and bottom slab of box culverts. 0.844 9 supplying and fabrication of Ribbed or deformed bar reinforcement conforming to BDS ISO 6935-2:2006 (or standard subsequently released from BSIT) for all types of RCC work including straightening, removing ruts, cleaning, cutting, hooking, bending, lapping and/or welding wherever required as directed, placing in position, tieing with 22BWG black annealed binding wire double fold, cost of binding wire and anchoring to the adjoining members wherever necessary, supplying and placing with proper cover blocks (1:1), 0.844