REPAIR TO JOINT FILLING OF RUNWAY, DISPERSAL AND BLAST PEN IN TECH AREA AT AF STN HALWARA UNDER GE (AF) HALWARA

Material and labour for Racking out of old existing sealant compound and back up rod of the existing joints 10mm wide by special tools like cutting blades/ machines, widening of joints 2mm by using joint cutting blades of appropriate size, straight and smooth edges. Joint cleaned thoroughly with application of compressed air. Joint shall be made dry, vacuum cleaned and free of dirt, oil, vegetation and other debris. Application of two coats of primer with thin brush by forward and backward movement at an interval of 30 minutes before placing the backup rod and pouring the sealant. The depth of sealant above back rod 8mm. . Thereafter filled with closed cell, medium density, crossed linked polyethylene foam backup rod of 8 mm dia for complete length of the joint, over it to be filled with polyurethane joint sealant meeting the requirements mentioned BS-5212 , BS 4254 and EN – 141875- 2003 with minimum movement accommodation factor (MAF) of +/- 30% complete all as specified and directed by Engr-in-Charge.

Material and labour for Racking out of old existing sealant compound and back up rod of the existing joints 14mm wide by special tools like cutting blades/ machines, widening of joints 2mm by using joint cutting blades of appropriate size, straight and smooth edges. Joint cleaned thoroughly with application of compressed air. Joint shall be made dry, vacuum cleaned and free of dirt, oil, vegetation and other debris. Application of two coats of primer with thin brush by forward and backward movement at an interval of 30 minutes before placing the backup rod and pouring the sealant. The depth of sealant above back rod 12mm. . Thereafter filled with closed cell, medium density, crossed linked polyethylene foam backup rod of 12mm dia for complete length of the joint, over it to be filled with polyurethane joint sealant meeting the requirements mentioned BS-5212 , BS 4254 and EN – 141875- 2003 with minimum movement accommodation factor (MAF) of +/- 30% complete all as specified and directed by Engr-in-Charge.

Material and labour for Racking out of old existing sealant compound and back up rod of the existing joints 25mm wide by special tools like cutting blades/ machines, widening of joints 2mm by using joint cutting blades of appropriate size, straight and smooth edges. Joint cleaned thoroughly with application of compressed air. Joint shall be made dry, vacuum cleaned and free of dirt, oil, vegetation and other debris. Application of two coats of primer with thin brush by forward and backward movement at an interval of 30 minutes before placing the backup rod and pouring the sealant. The depth of sealant above back rod 8mm. Thereafter filled with 25mm thick compressible polyethylene closed cell type filler board as specified, over it filled with closed cell, medium density, crossed linked polyethylene foam backup rod of 30 mm dia for complete length of the joint. Finally filled with polyurethane joint sealant meeting the requirements mentioned BS-5212 , BS 4254 and EN – 141875- 2003 with minimum movement accommodation factor (MAF) of +/- 30% complete all as specified and directed by Engr-in-Charge. Note :- Any joint of width if exceeding 25mm would also be measured under this item. The quoted rates would deemed to have included this item. Note: 01 to 03 item: Rate quoted by bidder is deemed to be inclusive of all the equipment for removing old sealant and filling the sealant. Also, rate quoted is deemed to be inclusive of sealant, backup rod and filler board.