REPAIRS TO JOINT FILLING, SLAB, RUNWAY SIGNAGE BOARD AND OTHER CONNECTED WORKS AT MAIN TAXI TRACK AND CERTAIN OTHER AIRCRAFT MOVEMENT AREA AT AF STN KALAIKUNDA

Amount

M & L for racking out of old existing joint sealant compound (Any type and any sealant compound) and back up rod of the existing joints by special tools like cutting blades/machines, widening of joints by 2 mm 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 pacing the backup rod and pouring the sealant, thereafter filled with closed cell, medium density, cross linked polyethylene foam backup rod of suitable size for complete length of the joint for the joint width 6 to 10 mm, over it to be finally filled with polyurethane joint sealant meeting the requirements mentioned in BS-5212, BS-4254 and EN-141875-2003 with minimum movement accommodation factor MAF of +/- 30% complete all as specified and directed. Note: - (i) Minimum depth of sealant will be as per respective manufacturers instruction. Sealant and primer will be of same make. (ii) Masking tape will be used to avoid accidental seepage/spreading of sealant. (iii) Bidders attention is invited to the depth of pavement joint required to be cut,in case of extra cutting biderrs needs to make good with suitable filler as directed by Engr-In-Charge/Manufacturer at his own cost. (iv) Filling of joints to be done 2 to3 mm recessed during summer and in winter it should be filled up to top up. (v) Fly wheel,spatula,triangular pallet Knife etc. to be used to maintain the recess and to give aesthetics.

All as per item No 01 here-in -before but size of joint is 11 to 15 mm wide all as specified and as directed by Engr-in-Charge

All as per item No 01 here-in -before but size of joint is 16 to 20 mm wide all as specified and as directed by Engr-in-Charge

All as per item No 01 here-in -before but size of joint is 21 to 25 mm wide all as specified and as directed by Engr-in-Charge

All as per item No 01 here-in -before but size of joint is 26 to 30 mm wide all as specified and as directed by Engr-in-Charge

Repair to broken spalled edges of joints pot holes etc of existing concrete slab by forming square/recangular grooves with diamond/Mach cutter wider towards bottom to form key with the existing quality concrete cleaning / dusting the grooves using compressed air to remove all dust and dirt by air blower and repairing with epoxy morter after applying epoxy primer and applying one coat of Epoxy resin (Base &Hardner, Ratio 2:1) over epoxy mortor , finished all as per manufacturer instruction and as directed.

S & F in repair sign board of size 850mmx1650mm made with aluminium frame of size 50.80x25.40x1.70mm (jindal) including 6mm thick ACP sheet (1st quality) with EPDM gasket, colour rectro highly reflective radium sticker including capital letter and marking (design marking letters and background colour as per direction of engineer in charge) and aluminium "A" section for support of 2 Nos PVC pipe 50mm dia for leg and aluminium "L" section of size 50x50mm and aluminium claimp 6mm thick flat strip 50mm wide with nut and bolt complete all as specified and directed by Engineer-in -charge.(Make: as per sample)

CLASSIC CONSTRUCTION AND SUPPLIERS (BID ID -3119380)

T K Construction (BID ID -3107830)

Guru Charan Mahata (BID ID -3118275)