REPAIR TO RIGID/ FLEXIBLE PAVEMENT INCL CRACK REPAIR AND CONNECTED ITEMS, FOR RUNWAY, PTT LINKS AND DISPERSAL AREAS AT AIR FORCE STN JODHPUR

M&L for raking out sealing compound from existing expansion joints of dimension 25 mm to 30 mm wide and 45 mm deep, removing the debris from site by sweeping the concrete surface with brooms, cleaning with compressed air, treating sides and bottom of the joints with primer as per manufacturer's directions and filled with preformed closed cell polyethylene backup rod/strip of 25-32 mm dia, sealing with pitch free polyurethane grey sealant (minimum depth of sealant above backup rod shall be 10 mm) conforming to BS-5212 (Type FB) and applying masking tape on edges of joints to prevent accidental spillage of sealant and removing the masking tape after application of sealant complete all as specified and directed.

Ditto all as per item No 1 above but construction/dummy joints of dimension 16 to 24 mm wide and 40 mm deep and backup rod/strip of 16-25 mm complete all as specified and directed.

Ditto all as per item No 1 above but construction/dummy joints of dimension 10 to 15 mm wide and 30 mm deep and backup rod/strip of 13-18 mm complete all as specified and directed. Note for Srl item No 1 to 3 :- Incase of any variation in width or depth of joint, the same is deemed to be included in quoted rates by the contractor as in Sch 'A'/BOQ items as above. The contractor shall not be entitled for any extra claim on this account.

M & L for preparation of old concrete/bitumen surfaces on rigid / flexible portion of Runway/Taxi track by brushing, washing, rubbing by gunny bags over 10cm width or girth of any description and applying one coat of Ist quality exterior weather proof water base emulsion on lines, dashes arrows, letters etc any tint paint all as directed by Engr-in-Charge

All as per item No 04 above but n exc 10 cm width or girth when unconnected with other painting or when painted in a different tint

M&L for cleaning the surface by brushing with wire brushes for removing caked mud etc, sweeping with compressor air blower to remove all loose dust and dirt etc/taking out dust/ existing material with compressed air and making the surface free from dust, drying the surface and applying Two coats of polymeric modified emulsion (PME) by using self propelled emulsion distribution uniformly or towed emulsion pressure sprayer , equipped for spraying the PME uniformly and mopping the total undiluted PME @ 1.00 liter per sqm in two coats in ratio 1:1 (PME: water) and ensure uniform finish of total area complete all as specified and directed. Note: The tenderer shall take into consideration the following points while quoting rate for the above item:- (i) No price adjustment shall be applicable if excess quantity of polymer modified emulsion (PME) shall be used, depending upon condition of existing flexible surface. (ii) Special care shall be taken to fill gaps/cracks up to 6mm wide with 2.36 mm size coarse sand mixed with PME as per manufacturers instructons and quoted rate shall be included for same.