REPAIR TO RIGID AND FLEXIBLE PAVEMENT/SURFACE OF RUNWAY AND PAINTING TO RUNWAY AND DISPERSAL AREA AT PASIGHAT STN UNDER GE (AF) CHABUA

Amount

M & L for preparation of old painted surface of concrete/flexible pavement and applying one coat of road marking paint /water based grade-2 conforming to IS 164-1981 (white, Yellow, Black and Orange, etc) as PTT, loops/links etc complete all as specified and as directed. Note:- (i) The work may be ordered six times during currency of the contract. (ii) Each coat will be measured and paid separately if directed in the writing for additional coat.

M&L for raking of joint/removing old any sealing compound, dirt from EXPANSION JOINTS 20mm wide (+ 3 mm) and 40 mm deep, cleaning the joint sides properly by mechanical means with diamond cutter, filling the joints with closed cell, medium density, cross linked polyethene foam backup rod of 20mm dia and applying bond breaker tape on top of backup rod for complete width of the joints, priming top with specified primer suitable for polyurethane sealing compound and filling polyurethane based sealant, 10 mm thick including using masking tape on edges of joints to avoid accidental spillage of sealant on top of surface of pavements complete all as specified and directed.

M&L for raking of joints/removing old any sealing compound, dirt from DUMMY/CONSTRUCTION JOINTS 10 mm wide (+ 3 mm) and 30 mm deep, cleaning the joint sides properly by mechanical means with diamond cutter, filling the joints with closed cell, medium density, cross linked polyethene foam backup rod of 10 mm dia and applying bond breaker tape on top of backup rod for complete width of the joints, priming top with specified primer suitable for polyurethane sealing compound and filling polyurethane based sealant, 10 mm thick including using masking tape on edges of joints to avoid accidental spillage of sealant on top of surface of pavements complete all as specified and directed.

M&L for raking of joints/removing old any sealing compound, dirt ,up to a average depth of 30 mm from DUMMY/CONSTRUCTION JOINTS of a average width 12 mm, (+ 3 mm) cleaning the joint sides properly by mechanical means with diamond cutter, filling the joints with closed cell, medium density, cross linked polyethene foam backup rod of 12 mm dia and applying bond breaker tape on top of backup rod for complete width of the joints, priming top with specified primer suitable for polyurethane sealing compound and filling polyurethane based sealant, 13 mm thick including using masking tape on edges of joints to avoid accidental spillage of sealant on top of surface of pavements complete all as specified and directed.

M&L for making good cracks/repair in Concrete slabs (exposed rigid pavement) by cutting 30 mm to 40 mm deep and cutting spilled joint, sides perpendicular and parallel to edges by mechanical tools like diamond cutter, cleaning with compressed air under pressure and filling with Elastomeric concrete after application of specified primer all as per manufactures instruction and specifications complete and removal of rubbish to a distance exc 250 m and nexc 500 m and depositing complete all as specified and as directed.

M&L for making good cracks in slabs (exposed rigid pavement) by cutting grooves 30mm to 40mm deep and cutting spilled joint sides perpendicular and parallel to edges by mechanical tools like diamond cutter, cleaning with compressed air under pressure and filling with epoxy resin mortar after application of specified primer and removal of rubbish to distance exc 250m and n.exc. 500m and depositing, complete all as specified and as directed.

M&L for repair to cracks on flexible pavement of runway, PTT and links of runway cracks to be cut to 20mm width upto 30mm depth using diamond cutter and filled with using ready mix pothole repairing bituminous concrete product and compacted, tempers to finish with the existing surface complete all as specified and directed.

M&L for cleaning of monsoon drain 1.5 m in depth(avg) as ordered including taking out accumulated silts sand muds etc from bottom of drain removal of all types of organic materials silts, sand, muds etc from bottom of brick drain etc to a distance of exc 250 mtr complete all as specified and directed.

M&L for scraping of grass/wild growth, etc around the runway lights DTGM/link boards, monsoon drain channels etc in airfield area including removing of rubbish from the site to a distance not exc 50 mtr and deposited where directed at a level n.exc 1.5mtr above the starting point complete all as specified and as directed.

M & L preparing old black top surfaces by brushing with wire brushes for removing any foreign objects or other stone pieces/vegetations etc and sweeping with brooms and finally cleaning with air compressor, making the surface free from dust and applying polymer modified bitumen emulsion PMBEs by spraying with conventional tractor mounted bitumen sprayer, complete for uniform application with undiluted quantity of PMBEs @ 0.500 litres/sqm mix with water in 1:1 ratio and provide uniform finish to runway complete all as per manufactures instruction and as specified and as directed. Note:- (a) The work shall be carried out after filling of pores, pin/pot holes of area not exc 491 sqmm each and filled with ready mix Dense asphaltic concrete (DAC) and finished properly to match with existing flexible portion of runway and to be executed one day before placing of polymer modified emulsion, and rate will be inclusive in quoted rate. (b) Contractor shall produce original purchase voucher of PMBEs from authorized dealer. (c) Contractor shall bring the materials and to be incorporated after checking the consignment by Engr in charge. (d) Runway surface friction will be tested by the contractor prior and after the application of PMBEs and rates thereof shall included in the unit rate of this item. (e) Arrangement for protection of centre line lights to be made before application of bitumen emulsion. Any damage to centre line light to be repair at his own cost. (f) Protection to centre line painting to be arranged by the contractor and cost of it will be included in quoted rate. (g) Any spillage of bitumen emulsion over existing centre line paint and centre line light to be removed by the contractor and cost of it will be included in quoted rate.

M/S MAHATO ENTERPRISE

M/S S. P. ENTERPRISE

M/S D P BERLIA

M/s PRABIR ENTERPRISE

M/s Krishna Construction

M/S DURGA CONSTRUCTION & CO

M/S R G Construction