Mining, Minerals & Quarrying Tender Results

NOTE FOR ITEM NO 11.12: – Minimum Dry Film Thickness (DFT): (a) The total Dry Film Thickness (DFT) of the polyurethane waterproofing membrane (excluding primer coat) shall not be less than 1.2 mm after full curing, irrespective of surface type (accessible or inaccessible roofs, terraces, or parapets). (b) The system shall comprise one primer coat and two or more finish coats of approved single-component polyurethane or fibre-reinforced polyurethane coating, applied strictly as per manufacturer’s Technical Data Sheet (TDS). (c) Where the manufacturer’s TDS specifies a higher DFT, the higher value shall prevail. (d) Wet Film Thickness (WFT) shall be measured during application using a wet film gauge, and cumulative WFT readings shall be recorded to ensure the achieved DFT meets or exceeds the specified minimum. (e) The finished surface shall be continuous, pinhole-free, and of uniform thickness. (f) Acceptance tolerance for DFT shall be ±10% of the specified minimum. (g) No protective or overburden layers (such as tiles or screed) shall be applied until the coating has fully cured and successfully passed ponding / adhesion tests to the satisfaction of the Engineer-in-Charge.

8.3.1. Drilling with drill bit in overburden portion of soil formation including collection of soil sample at every 3.0 m depth wherever there is a change of strata in sample boxes with distinguishing marks upto the depth of rock formation and withdrawing the drill bit for lowering casing as directed with 245mm to 300 mmm dia drill bit

Driling with Rig Bit in overburden portion of soil foundation including ........ As directed (Rate as per PHED deptt. approved rate ). Total depth upto rock =120.00

Driling with Rig Bit in overburden portion of soil foundation including ........ As directed (Rate as per PHED deptt. approved rate ). Total depth upto rock =120.00

Driling with Rig Bit in overburden portion of soil foundation including ........ As directed (Rate as per PHED deptt. approved rate ). Total depth upto rock =120.00

Providing Rough stone dry packing / pitching in slope, protection walls, approns and revetments to designed thickness using hard granite stones of required size of approved quality from approved quarry including quarrying supplying conveying and cost conveyance taxes royalty of all materials including T&P complete including filling the interstices with small stones by wedging and hammering finished to proper slope and level as per direction of the Engineer in charge including dewatering if required.