REPAIRS TO RUNWAY JOINT FILLING WITH BOSTIK AND GRADE B COMPOUND AT PTT, DISPERSAL AREA AT AF STATION IZATNAGAR, BAREILLY.

Amount

Cutting the edges of old joints of following width by racking out old sealing compound from existing joints of tarmac to depth as required (subject to minimum depth of 35 mm) by special tools like cutting blades / grinder machines (use of hammers is prohibited as it damages the edges) and removing old filled sealing compound from the joints by means of compressed air using hand blower including disposal of the same to a distance of 5.00 Kilometres from the starting point and repair of joints by epoxy wherever required and fill the joints by mechanical means as per following process: - (i) Provision of Backup rod of suitable dia to be inserted in the joint tightly as specified. (ii) Provision of adequate masking tape on either sides of joint to avoid spillage on concrete surface before applying joint sealant and removing the same after sealing of joints.

(iii) Supplying and filling of sealing compound properly for a depth of not less than 10 mm for joints upto 32 mm wide and 15 mm deep for joints wider than 32 mm upto and including 55 mm wide after application of suitable primer as directed by Engineer-in-Charge. (The finished level of sealed joints shall be on an average 3 mm below the top surface of slabs.) NOTE: - Sealing compound shall be Bostik "Seal N flex -2k', 02 component (Base and Hardner) Bostik Polyurethane sealent of grey colour conforming to BS-5212 with minimum movement accommodation factor of + 30% when tested as per ASTM C-719 or equivalent product of M/S Choksey Chemicals Pvt. Ltd. or M/S STP Ltd. as approved. The sealent shall have shore A @ 25 degree centigrade =15 + 5 and as per manufacturer's instructions.

(i) Width of joint exc. 5 mm but not exc. 12 mm.

(ii) Width of joint exc. 12 mm but not exc. 18 mm.

(iii) Width of joint exc. 18 mm but not exc. 25 mm.

(iv) Width of joint exc. 25 mm but not exc. 32 mm.

(v) Width of joint exc. 32 mm but not exc. 45 mm.

(vi) Width of joint exc. 45 mm but not exc. 55 mm.

M & L for filling of pot holes of following sizes in concrete surface and filling as per following process: - (i) Cleaning of surface by means of wire brush and removing the dust by means of compressed air. (ii) Sealing compound shall be filled in pot holes after application of primer. NOTE: - Sealing compound shall be Bostik "Seal N flex -1', single component Bostik Polyurethane sealent conforming to BS-5212 with minimum movement accommodation factor of + 30% when tested as per ASTM C-719 or equivalent product of M/S Choksey Chemicals Pvt. Ltd. or M/S STP Ltd. as approved. The sealent shall have shore A hardness >/= 30 and as per manufacturer's instructions.

(i) Dia and depth of pot hole not exc. 1 cm.

(ii) Dia and depth of pot hole exc. 1 cm but not exc. 2cm.

M & L for repair to concrete slab or pavement of existing damaged edges / spoiled edges to triangular / rectangular cross section, removing all broken and loose material to a distance exc. 50 metres but not exc. 100 metres and cleaning the surface with compressed air to remove dust, dirt, loose sand / foreign material, washing the surface with acid solution and repairing surface / edge with Bostik ERM or equivalent product of M/S Choksey Chemicals Pvt. Ltd. or M/S STP Ltd as approved epoxy resin mortar as per manufacturer's instructions after application of epoxy resin primer with and including necessary form work complete all as specified and directed by Engr-in-Charge.

Ikrar khan & co.

TEAM ACC INFRABUILD PRIVATE LIMITED

M/S ARORA ENTERPRISES

M/s KUMAR CONSTRUCTION CO.