REPAIRS TO PQC AND JOINT FILLING IN AIR FIELD TAXI TRACKS ETC AT INAS 313 UNDER AGE(I) NAVY CHENNAI

Amount

M & L Racking out of old existing sealant compound and back up rod of the existing joints by special tools like cutting blades/machines, widening of Dummy 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 (dummy)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. Thereafte filled with closed cell, medium density, cross linked polyethylene foam backup rod of 8 mm dia fo complete length of the joint, over it to be 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 by Engineer-in-Charge.

M & L Racking out of old existing sealant compound and back up rod of the existing joints by special tools like cutting blades/machines, widening of Construction 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 (construction)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 pouring the sealant Thereafter filled with closed cell medium density, cross linked polyethylene foam backup rod of 12 mm dia for complete length of the joint, over it to be 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 by Engineer-in-Charge.

M & L Racking out of old existing sealant compound, back up rod and filler board of the existing joints by specia tools like racker/cutting blades/machines , widening of expansion 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 (expansion) 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 filler board and pouring the sealant Thereafter filled with pre-molded 25 mm thick compressible polyethylene closed cell type filler board as specified , over it filled with closed cell medium density, cross 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 in BS-5212, BS 4254 and EN-141875-2003 with minimum movement accommodation factor MAF of+/- 30% complete all as specified and directed by Engineer-in-Charge.

M&L for PCC 1:1.5:3 type B1 ( 12.50 mm graded aggregate), as in flooring in dipersal with broom finish surface complete all as specified. and as directed by engineer-in -charge.

Painting two coats of aqua based road marking paint including preparation of new surfaces of dispersal and bituminous/concrete pavement and the like not exceeding 10 cm wide as in lines, dashes, letters, arrows etc of any tint white/golden yellow all as specified & as directed.

Retro reflective Painting to dispersal, taxiway, centre line, Apron markings etc. either continuous or broken lines to the required width and length over the new surface either on bituminous/concrete surface with solvent based road marking paint(Retro reflective paint) of approved make as specified and glass beads shall be apply at the rate of 0.25 Kg per Sqm (Reflective index 1.5) with self propelled airless spray painting equipment including preparation of surface upto the requirements at site complete all as specified and as directed.

Material & Labour For Precast cement concrete in Cover slab type B1 1:2:4 using 20 mm graded aggregate for man holes, chullah hoods,chajjas,water troughs, mangers, shelves and similar articles with Plain Faces complete all as specified and as directed by engineer-In- Charge

M & L for mild steel tmt bars 10mm dia and over, cut to length, bent to shape required, including cranking, bending spirally for hooping for columns, hooking ends and binding with and including mild steel wire (annealed) not less than 0.9mm dia or securing with clips complete all as specified and as directed by engineer-In- Charge

Site clearance, Clearing away all grass vegetation, saplings, shrubs, brushwood, undergrowth, roots, and trees not exceeding 30 cm girth and removing rubbish upto a distance of 50 metres outside the periphery of the area under clearance complete all as specified and directed by Engineer-in-Charge.

Unskilled labour for daily basis removal of all vegetation, roots, grass etc using sickle, knife etc from chain link fencing/ concertina coil/ Electric fencing around the Dispersal/Security wall complete all as specified and directed by Engineer-in-Charge.

S.T.S.CONSTRUCTIONS AGENCIES (BID ID -3148647)

kvs constructions (BID ID -3148984)