WBMAD/ULB/RM/NIT- 2e/26-27/SL2

Filling Pot-holes and Patch Repair with Bituminous Concrete 40 mm . Removal of all failed material,in the pavement courses and if necessary below the pavement,until the root causes of the failure is removed, the trimming of completed excavation to provide firm vertical faces; specified for the pavement layer; application of tack coat conforming to cl. 503 of MORT&H's specification ,on to the sides and base of excavation prior to back filling the pot holes with hot bituminous material as per clause 504 and the compaction,trimming and finishing of the surfaces of all patches to form a smooth continuous surface, level with the surrounding road as per the requirement of clause 3004.2 of MORT&H's specification (i) For Grading 1 Materials

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). i) On Bituminous surface @ 0.20-0.30Kg / sqm.

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 (Ref. toMORT&H's specification clause 504). For Grading II ( 19 mm nominal maximum aggregate size) Layer Thickness 50 - 75 mm.

Open-Graded Premix Surface . Providing, laying and rolling of open - graded premix surfacing of 20 mm thickness composed of 13.2 mm to 5.6 mm aggregates either using viscosity grade bitumen of approved grade to required line......... finished to required level and grades (Reference to MORT&H's specification clause 510). Case - I: Mechanical method using approved grade Bitumen and HMP of appropriate capacity not less than 75 tonnes / hour .

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 and B seal coats (Reference to MORT&H's specification clause 511) Case - I : Type A (Stone chips 6.7mm size) Providing and laying of liquid seal coat with HMP using approved crushed stone chipping and viscosity grade paving bitumen of suitable approved grade.

Sub Total

GST 18%

CESS 1%