REPAIR TO CRACKS BY ELASTOMERIC CONCRETE, JOINT FILLING, COLD EMULSION, PAINTING TO RUNWAY, DISPERSAL AREA, FLEXIBLE SURFACE, DTGM BOARDS AT ALG PASIGHAT UNDER GE(AF) CHABUA

Amount

M&L for raking of joint/removing old any sealing compound, dirt from EXPANSION JOINTS 25mm 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 polyethylene 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 polysulfide sealing compound and filling polysulfide 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 polyethylene 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 polysulfide sealing compound and filling polysulfide 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, upto 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 polyethylene foam backup rod of 15 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 polysulfide sealing compound and filling polysulfide 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 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 in 102 Sqn Dispersal, PTT, tech flight dispersal, 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 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 @ 1.0 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&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 for repair to cracks on flexible pavement of runway, PTT and links of runway cracks to be cut to 20mm to 25mm 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 as directed.

Demolition of cement concrete of any description and in any position not otherwise specifically provided for exc 15cm thickness complete all as specified and as directed.

M&L PCC1:4:8 type D-2 (using 40 mm graded stone aggregate) as in foundation, mass concreting, sub base of post/floor as per site etc complete all as specified and as directed.

S&F in repairs DTGM boards (two aspect) of size 152cmx122cm made out of 5 to 8mm thick of black engineering plastics having monolithic structure to withstand temperature variations from extreme cold to sweltering hot conditions and meet the frangibility requirement specified for objects in runway strip. The structure specially reinforced with Antimony Trioxide Methylamine Acrylate to withstand high velocity winds. Each side having size 5'X4' and base structure made of 80mm dia PVC pipe of projection 0.60m inserted to PVC pipes of 100mm dia embedded in PCC of size 0.45x0.45x0.75m including necessary excavation & earthwork in any type of soil upto GL complete all as specified and as directed. Note:- Rates are included for Writing numeral/letters with orange paint/orange retro reflecting tape size/shape as specified and directed by Engineer in Charge.

Prova Stores

M/S P R SINGH AND SONS

M/s KL Agarwalla & Co

M/S D G ENTERPRISE