Public Works Department Tender

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. (This item shall be done for reparing works only and shall not be used when original/renewal of tarfelting work is proposed to be undertaken) All floor

Supplying and labour for painting roof surface with bitumen (using 135 kg (avg.) per % Sqm.) including cleaning roof heating bitumen as directed and speading sand and complete …. etc.

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 1:6 cement mortar (b) 20 mm thick plaster (out side)

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-fusiblepolyethylene 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.). Membrane Property: Softening Point 150 deg C, Cold Flexibility -6 deg C, Tensile Strength, N/cm : 600 (longitudinal), 450 (transverse), Tearing Strength, N: 300 (longitudinal), 200 (transverse)

Roof treatment by application of non toxic polyurethane modified acrylic based single component (P U Roof Coat) solvent free, cold applied polyurethane modified elastomeric waterproofing membrane with excellant UV resistant capasity as per ASTM D6083fa water based 100%acrylic elastomeric emulsion polymer latex coating..... used as protective coating for roofs} after preparing the surface by cleaning and ti repairing the roof cracks by cement & sand mortar (1:4), preferably with :i!: antishrinkage mortar (to be paid separately) if any, apply two coats along with a 5 ~ IPrimingcoat(two coats of P U Roof Coat and one coat of primer coat compatible with Sqm. i main product as per manufacturers specification) and reinforced with or without 20~ gsm GeotextileFleece, including the cost of primer coat and basepreparation, tools & IPlantsbut excluding the cost of scaffolding and stagging complete as per direction of Engineer -in-charge. (Note: If Geotextile Fleece not uesd ,the rate would be reduced by Rs. 5/-per Sqm)

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