2/KM/Kalimpong Town

Repairing Pot-holes with Bituminous Macadam (Grading - I, for compacted thickness of 80mm to 100mm) Filling Pot Holes with Bituminous Macadam using Mobile Hot Mix plant (6-10 TPH) with approved crushed aggregates of specified grading premixed with bituminous binder @3.3% by wt. of the total mix, transported to site and laid in the pot hole prepared before hand by utting the edges to get a firm vertical face and by removing all the failed and loose materials including dust and applying tack coat evenly on the sides and on the surface as per specification, rolling the filled depression with 8-10 tonne smooth wheeled roller to achieve the desired compaction, including the cost and carriage of stone aggregates and bitumen, hire charges of machinery and equipment, cost of fuel and lubricants and wages of all operational staff, quality control except the cost of tack coat complete as per direction of Engineer-incharge. Payment to be made on the basis of the loose net volume of the stone aggregates used in the work.

Bituminous Macadam Providing and laying bituminous macadam with 100-120 TPH hot mix plant using crushed aggregates of specified grading premixed with approved bituminous binder @ 3.3% (min) for Grading -1 and 3.4% (min) for Grading -2 by weight of total mix , transported to site, laid over a previously prepared base with paver finisher to the required grade, level and alignment and rolled as per clauses 501.6 and 501.7 to achieve the desired compaction (Reference to MORT&H's specification clause 504). or Grading II (19 mm nominal maximum aggregate size) Layer Thickness 50-75mm

Tack Coat Providing and applying tack coat with Cationic bitumen emulsion (RS1) complying with IS:8887 using emulsion pressure distributor on the prepared bituminous/granular /cement concrete pavement surface cleaned with mechanical broom and high pressure air jet (Reference to MORT&H's specification clause 503).

MASTIC ASPHALT 25mm THICK Providing and laying 25 mm thick mastic asphalt wearing course with approved grade bitumen meeting the requirements given in table 500-39, prepared by using mastic cooker and laid to required level and slope after cleaning the surface, including providing antiskid surface with bitumen precoated fine-grained hard stone chipping of 13.2 mm nominal size at the rate of 0.005cum per 10 sqm and at an approximate spacing of 10 cm center to center in both directions, pressed into surface when the temperature of surfaces is not less than 100°C, protruding 1 mm to 4 mm over mastic surface, all complete as per clause 516 (Reference to MORT&H's specification clause 516 along with IRC:107).

Excavation for Structures Earth work in excavation of foundation of structures as per drawing and technical specification, including setting out, construction of shoring and bracing, removal of stumps and other deleterious matter,dressing of sides and bottom and backfilling with approved material (Reference to MORT&H's specification 304).

Supplying and laying 150 mm to 200 mm boulder soling including rough dressing hand packing and ramming down small pieces and preparing the bed to proper level and filling up all joints with sandy clay or earth.

PLUM CONCRETE (1:3:6) Plain cement concrete of nominal mix (1:3:6 ) with coarse aggregate of which stone boulder of size 225 mm to 150mm of 60% of total dry volume to be placed in position as directed by Eng-in charge ,67% - 40 mm down single &33% - 20 mm down bazri , Coarse Sand ,Cement ( 53 grade ) mechanically mixed in 1:3:6 of rest volume and placed in position and compacted by any means as directed including cost of shuttering .

Back filling behind abutment, wing wall and return wall complete including spriklring water and throughly compacted with plate compactor/power rammer in layers not exceeding 150mm compacted thickness as per drawing and Technical Specification (710.1.4 of IRC:78 & MoRTH's specification 2200)

Providing weep holes in Brick masonry/Plain/ reinforced concrete abutment, wing wall/ return wall with 100 mm dia AC/PVC/HDPC pipe, extending through the full width of the structure with slope of 1V :20H towards drawing oce. Complete as per drawing and Technical Specifications (Reference to MORT&H's specifications 2706 & 2200).

GST @ 18%