HWPT/CIVIL/PLANT/05/2023

Amount

Providing and laying in situ 5 course water proofing treatment with APP (Atactic polypropylene) modified Polymeric membrane over roof consisting of first coat of bitumen primer @ 0.40 litre per sqm, 2nd & 4th courses of bonding material @ 1.20 kg/sqm, which shall consist of blown type bitumen of grade 85/25 conforming to IS : 702 including coarse sand spread over 4th course of bonding material. 3rd layer of roofing membrane APP modified Polymeric membrane 2.0 mm thick of 3.00 Kg/ sqm weight consisting of five layers prefabricated with centre core as 100 micron HMHDPE film sandwiched on both sides with polymeric mix and the polymeric mix is protected on both side with 20 micron HMHDPE film. 5th, the top most layer shall be finished with matt finished vitrified tiles using suitable acid and /or alkali resisting adhesive and finished neat (item of laying matt vitrified tiles with adhesive shall be paid separately) etc..,all complete at all levels as per drawings, specifications and as directed by Engineer. Note: The contractor shall furnish guarantee as per appendix D for maintaining the roof leak proof for a minimum period of 10 (ten) years. If any defects occur during guarantee period, the contractor shall rectify the same within three days of intimation at their own cost to the satisfaction of the Engineer-in-Charge. The decision of the Engineer-in-Charge shall be final and binding.

Providing and laying matt finished vitrified tile of minimum size 300x300x9.8mm having with water absorption less than 0.5% and conforming to IS:15622 of approved make in all colours and shades in outdoor floors and walls in all shapes and patterns etc.., all complete at all levels as per drawings, specifications and as directed by Engineer. i). In flooring using suitable acid and /or alkali resisting adhesive bedding of thickness up to 10mm. Joint thickness shall be up to 4mm and filled with suitable acid and/or alkali resisting epoxy adhesive. Expansion joints shall be provided at every 10 mtr (approx) interval maintained with a gap of 5 mm filled with flexible sealant.

ii). In dado/skirting using suitable acid and /or alkali resisting adhesive bedding of thickness up to 10mm. Joint thickness shall be up to 4mm and filled with suitable acid and/or alkali resisting epoxy adhesive. Expansion joints shall be provided at every 10 mtr (approx) interval maintained with a gap of 5 mm filled with flexible sealant.

S.R.SELVARAJ AND SONS

Threekay constructions