REPAIR /MAINT TO JOINT FILLING, PAINTING AND ELASTOMERIC TREATMENT IN RUNWAY AT AF STATION DARBHANGA

M&L for preparing of exisiting construction joints including removing filled material in joints of runway by removing the cracking out joints 10 to 15 mm wide and 25 mm deep including removing all loose material and cleaning the joints with brush and removing all loose fine particles with compressed air , application of two coats of primer with thin brush by forward and backward movement at an interval of 30 minute and priming and sealed with using polyurethane based sealing compound with suitable primer as per manufacturer's recommendation, polyurethane sealent conforming with BS -4254 and EN-141875-2003(for hydrolysis/water resistant) with minimum movement accommodation factor + 30% with ten years performance guarantee and applying masking tape on edges of joint to prevent accidental spillage of sealant and removing the same after sealant is applied complete all as speciied and directed. Note:- Old unserviceable material so obtained from removing of existing filled up materials shall be disposed off out side MoD land.

M&L for preparing of exisiting construction joints including removing filled material in joints of runway by removing the cracking out joints 15 to 25 mm wide and 25 mm deep including removing all loose material and cleaning the joints with brush and removing all loose fine particles with compressed air , application of two coats of primer with thin brush by forward and backward movement at an interval of 30 minute and priming and sealed with using polyurethane based sealing compound with suitable primer as per manufacturer's recommendation, polyurethane sealent conforming with BS -4254 and EN-141875-2003(for hydrolysis/water resistant) with minimum movement accommodation factor + 30% with ten years performance guarantee and applying masking tape on edges of joint to prevent accidental spillage of sealant and removing the same after sealant is applied complete all as speciied and directed. Note:- Old unserviceable material so obtained from removing of existing filled up materials shall be disposed off out side MoD land.

M&L for cutting of existing Runway/Taxi tracks in V shape/rectangualr/square at cracks and at spalled edges by mechanical tools making groove at edges cleaning throughly by air blower/air blastisng and applying proprietory primer on the cleaned surfaces to obtain tacked surface and finally filling in ELASTOMERIC CONCERETE of make STP Chemicals/Choksey Chemicals/CIPY/BASF or equivalent as approved (prepared by mixing part A, part B and adding fiberglass sand all as per manufactureres instructions) and properly mixing in purpose made mixer plant electrically operated) to obtain a homogeneous mixture and finally tooling the surface with hand tools to obtain a grooved textured finish complete all as specified and as directed. Note:- (i)The rate quoted is inclusive of providing masking tape at joints and use and waste of form work as required at spalled edges and making good the disturbed joint filling around the area where material is applied. (ii) The work shall be carried out through authorised and qualified applicator of elastomeric concrete. (iii) Contractor shall submit manufacturer's gurantee certificate to GE in this regard.

M&L for applying one coat of runway road marking paint golden, yellow, or white colour as approved aqua based to give uniform finish including preparation of old painted concrete surface of runway slab or taxi track or dispersal by washing down with soap water for painting as lines, dashes, arrows, letters and the like exceeding 10cm width or girth complete all as specified and directed.

M&L for applying one coat of runway road marking paint of colour as approved aqua based to give uniform finish including preparation of old painted concrete surfaces of runway slab or taxi track or dispersal by washing down with soap water for painting as lines, dashes, arrows, letters and the like not exceeding 10cm width or girth complete all as specified and directed. Note for Item No 4&5 :- Masking tape shall be used on edges of paints before painting and removing the same after paint is applied where ever required and as directed.