SPL REPAIR TO BLDG NO P-216 IN ZONE H AT AGARTALA MIL STN

Taking out complete existing roof treatment from roof surfaces and roughening of surfaces of old concrete roofby picking, sweeping clean and washing down with water to remove dust by air blower and removing rubbish to a distance exceeding 50m as per direction of Engineer-in-Charge complete all as specified and as directed at site.

M&L for making the grooves to 'V' section in existing parapet wall/ column over RCC roofs cleaning out and tacked and insertion of polymeric membrane into the grooves and sealed solidly with a hot mixture of bitumen and clean dry sand in the ratio of 1:1 by weight etc complete all as specified and directed at site.

Material and labour for 10 mm thick screed bed or bedding layer in CM 1:4 in order to maintain proper slope over existing roof surface for applying single component acrylic polymer modified, finished even and fair without using extra cement complete all as specified and as directed t site. (Note: Polymeric membrane shall be measured and paid seprately under relevent item of this Schedule 'A')

Material and labour for PCC (1:2:4) type B1 (using 20mm graded stone aggregate) as in roof kerb, slightly rounded or chamfered on edges, mixed with water proofing compound in top layer as per manufacturer instruction surface finished even and smooth on exposed concrete surface without using extra cement all complete all as specified and as directed at site. (Note: Liquid WPC shall be measured and paid separately)

M & L for cleaning newly plastered surfaces of roof to receive the water proofing membrane, applying a coat of bitumenous primer @ 0.40 ltrs per sqm and applying a layers of APP based polymeric membrane, 3mm thick (minimum) weight 3.50 Kg/sqm reinforced with polyster non woven fabric (weighing not less than 150 gms/sqm) shall be applied over Bitumenious primer (Application of polymeric memberane shall be by torch sealed application, over laps shall be minimum 100mm on the transverse direction & 75 mm on the longtudinal direction) polymeric membrane shall be taken to a height of 60 cm (minimum) and then inserted inside the groove of parapet wall and shall be finished by membrane flashing, coved fillet in PCC (1:2:4) type B-0 of radius 75 mm shall be provided at the junction of roof & other vertical surfaces & surfaces shall be painted with applying one coat of aluminium paint over the APP modified membrane @ 0.11 kg/sqm complete all as specified and as directed at site.

Material and labour in repair light shade vitrified cerimic coloured tile 10mm thick (square /rectangular) of premium quality, area of each tile exceeding 0.18 Sqm but not exc 0.38 Sqm in floors etc. set & jointed in neat cement slurry & pointed in white or coloured cement to match the tile including applying screed bed or bedding layer of mortar 15 mm thick in Cement Mortar 1:6 complete all as specified and as directed at site. Note: The colour / shade / design of tiles shall be as approved by AGE(I).

Material and labour in repair light shade vitrified coloured tile 10mm thick of premium quality, area of each tile not exceeding 0.36 sqm on skiriting/dado, set & jointed in neat cement slurry & pointed with white/coloured to match over and including screed bed of 10mm thick in Cement Mortar 1:4 complete all as specified and as directed t site. Note: The colour / shade / design of tiles shall be as approved by AGE(I).

Material and labour in repair for brick work with sub class `B` bricks, old size, straight or curved on plan exc 6m mean radius built in cement mortar (1:4) complete all as specified and as directed at site.

Taking down cement plaster on brick, concrete surfaces including racking out joints hacking for key, scrubbing down with, water etc complete all as specified and as directed at site.

Material and labour for 15mm thick rendering in CM (1:4) on brick work /concrete surfaces mixed with liquid water proofing compound @ 200ml per bag of cement/ as per manufacturer's instructions and finish the surface even and fair complete all as specified and as directed at site. (Note:Water proofing compound shall be measured & paid separately)