WBPWD/AE/RGKHSD/NIeT-26/ 25-26-Sl-5

Taking out old damaged tarfelt from the roof, parapet etc. preparing the roof surfaces by removing all spoils, blisters, moss etc. from the working site and disposal of the same beyond the compound and cleaning the site in all respect as per direction of Engineer-in-Charge.

Applying 2 coats of Acrylic Polymer modification Paint (Equivalent to MASTER CRETE M-01 of Choksey or milar specified product) having water proofing cum bonding properties for specific use of water prone urva to prevent leakage undermeath by mixing in proporion (1 liquid compound 2 cement) as per Manfcturer's specification (Cement to be supplied by the Department)

Ordinary Cement concrete (mix 1:2:4) with graded stone chips (6mm nominal size) excluding shuttering and reinforcement,if any, in gound floor as per relevant IS codes. Pakur variety

Plaster (to wall, floor, ceiling etc.) with sand and cement mortar including rounding off or chamfering corners as directed and raking out joints including throating, nosing and drip course, scaffolding/staging where necessary (Ground floor).[Excluding cost of chipping over concrete surface] (i) With 1:4 cement mortar (a) 20 mm thick plaster

Roof treatment by application of ready-to-use, non toxic, water based, cold applied, single component, elastomeric in-situ seamless onolithic, acrylic modified bituminous liquid waterproofing membrane( Tarfelt LM or any other equivalent product) after preparing the surface by cleaning and repairing the roof cracks by cement & sand mortar (1/4), preferably with anti-shrinkage mortar( repair by mortar to be paid separately), if any. Apply two coats @ 0.70kg/sqm per coat without dilution with water) after application of a priming coat ( diluted with water in the ratio of 50 50 and apply @ 400grm/sqm of the mixture) ( Time gap between coats-after priming coat allow it to touch dry, after applying 1st coat wait for 12 hours then apply 2nd coat paint and after 2nd coat allow 36 hrs for any further work) including the cost of aterials and base cleaning, tools & plants complete as per direction of Engineer-in-charge. (Conduct ponding test after 7 days of curing at ambient temperature) (Cover layer not required and not to be used over existing APP/Terfelt/Metal Pitched roof)

Supplying & laying 3mm thick pre-fabricated plastomeric water proofing membrane conforming to EN 12311-1 & ASTMD 5147, manufactured with atactic poly propylene (APP) modified premium grade asphalt , specially reinforced with non-woven polyester core with polyester reinforcement @160 gms per sqm & both faces covered with thermo-fusible polyethylene film /MineraL on top face over a coat of primer @ 0.40 lit/sqm of manufacturer's specification on smooth,clean dry surface prepared wherever required.Lap joint shall be provided of 75 mm in longitudinal & 100 mm in transverse direction and fused using LPG/ Propane torch employing extra care ensuring full bondage, complete removal of entrapped air and sealing edges into grooves in appropriate manner as per direction of Engineer -in-charge all complete including materials,labour and applicable taxes. (Payment shall be made on the basis of finished surface area.).

Preparation of drainage spout on roof for bituminous waterproofing treatment after required grading and shaping of the under bed with Cement Concrete (1:2:4) or Cement Mortar (1:4) as directed, Chamfering and moulding the parapet wall to form a bell mouth entry, if required and providing full course treatment with bituminous felt to facilitate quick and smooth drainage of watwr into the down pipes complete including cost of all materials and labour according to satisfaction of the Engineer - in - Charge.

Removal of rubbish,earth etc. from the working site and disposal of the same beyond the compound, in conformity with the Municipal / Corporation Rules for such disposal, loading into truck and cleaning the site in all respect as per direction of Engineer in charge

Please Enable Macros to View BoQ information