GCDA Eastern entry building -Leak arresting works at expansion joints

Amount

Leak arresting works

od142973/2024_2025 : Supply and application of two part polysulphide sealant Thioflex600 or equivalent to the expansion joint after removing the existing sealant, cleaning the expansion joint, applying a priming coat and filling the joints with filler board and backup rod, supply and application of a Hypalon membrane system having a minimum tensile strength of 7 Mpa and elongation of 400%, applying mixed Nitomortar FCFS or egivalent using a serrated spreader and fix expoband or equivalent one roll firmly to displace trapped air and to ensure extrusion of Nitomortar FCFS or equivalent through the edge perforations, applying a second layer of Nitomortar FCFS or equivalent to the full width of the top surface of membrane, so that the membrane will be sandwiched between two layers of adhesives complete in all respect as per the direction of engineer in charge.

od143918/2024_2025 : Providing and fixing sheet covering over expansion joints with iron screws as per design.<br>Aluminium fluted strips 2 mm thick<br>300 mm wide

od143985/2024_2025 : Providing and laying M20 grade 50 mm thick screed concrete on the floor using 20mm aggregate admixed with waterproofing material at a dosage of 300 ml per bag of cement shalll be provided on the floor.

15.2.1 : Demolishing cement concrete manually / by mechanical means including disposal of material within 50 metres lead as per direction of Engineer - in-Charge.Nominal concrete 1:3:6 or richer mix (i/c equivalent design mix)

14.72 : Providing and fixing double scaffolding system (cup lock type) on the exterior side, upto seven story hight made with 40 mm dia. M.S. tube 1.5 m centre to centre, horizontal & vertical tubes joining with cup & lock system with M.S. tubes, M.S. tube challies, M.S. clamps and M.S. staricase system in the scaffolding for working platform etc. and maintaining it in a serviceable condition for the required duration as approved and removing it there after. The scaffolding system shall be stiffened with bracings, runners, connection with the building etc wherever required for inspection of work at required location with essential safety features for the workmen etc. complete as per directions and approval of Engineer- in Charge. The elevational area of the scaffolding shall be measured for payment purpose. The payment will be made once irrespective of duration of scaffolding. Note:- This item to be used for maintenance work judicially, necessary deduction for scaffolding in the existing item to be done .

od143927/2024_2025 : Engaging labour for petty repair works.coolie

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