ROOF CLEANING OF CERTAIN OTM WITH NON ASSESIBLE ROOFS AND ALLIED WORKS IN TECH AREA AT AF STN ADAMPUR

Cleaning and removing all scale and dirt, etc. using jute brush from inside & outside of 250 litre to 500 litre capacity PVC water tanks and from mouths of connected pipes, removing the scale and dirt etc. to a distance of not exceeding 500 metre, washing the tanks with water, cleaning the connecting pipes with bleaching powder solution and finally applying 2% potassium permanganate solution for disinfection, marking with white paint on tank ‘date of cleaning the tank ’, complete all as specified and directed.

Cleaning and removing all scale and dirt, etc. using jute brush from inside & outside of 501 litre to 1000 litre capacity PVC water tanks and from mouths of connected pipes, removing the scale and dirt etc. to a distance of not exceeding 500 metre, washing the tanks with water, cleaning the connecting pipes with bleaching powder solution and finally applying 2% potassium permanganate solution for disinfection, marking with white paint on tank ‘Date of cleaning the tank ’, complete all as specified and directed.

M&L for uprooting scrubs/plant/flora & fauna on wall girth not exceeding 100mm from brick wall by cutting holes into masonry / walls for digging out roots and dosing Sulfuric/Phenolic Acid as per manufacturer's instruction to burn deep rooted tree roots and making good the disturbed area with cement mortar in CM 1:3 using water proofing compound including necessary scaffolding upto a height of 16 metre complete all as specified and directed.

Cleaning of roof top surfaces of any type/description, upto 15m height for non accessible roof by removing tree leaf any other similar waste material carefully to avoid damage of existing roof treatment including cleaning of rain water pipes of any description and any size for smooth flowing of rain water and removing the debris out side MD land complete all as specified and directed.

Cutting of grass, vegetation, shrubs, bushes using petrol bush cutter from traverses of DBs, BPs, UG Ops Bldgs, and roof of DBs and BPs and removal of debris outside MoD land complete all as specified and directed.

Flush pointing with cement mortar (1:3) to brick work or brick tiles, laid flat as in floors, surface channels, roofs including racking out exising joints / pointing in cement mortar or cement lime mortar etc. Complete all as specified and directed.

S&F in repair 500 litre capacity, three layered polyethylene water storage tanks (cylindrical vertical with closed top) including hoisted and fixed in position, making connections to existing pipe line and including PTMT ball valves, high pressure, with epoxy coated aluminium rod & high density plastic ball complete screwed for iron pipe or brass ferrule and fixed, suitable for 20 mm bore GI pipe, complete all as specified and directed.

S&F in repair 1000 litre capacity, three layered polyethylene water storage tanks (cylindrical vertical with closed top) including hoisted and fixed in position, making connections to existing pipe line and including PTMT ball valves, high pressure, with epoxy coated aluminium rod & high density plastic ball complete screwed for iron pipe or brass ferrule and fixed, suitable for 20 mm bore GI pipe, complete all as specified and directed.

S&F in repair Gun-metal stop valve (quarter turn type) with MS lever handle, suitable for GI tubes 20 mm bore, ISI marked, screwed both ends for iron pipe, IN REPAIR, complete all as specified and directed.

S&F in repair Gun-metal stop valve (quarter turn type) with MS lever handle, suitable for GI tubes 15 mm bore, ISI marked, screwed both ends for iron pipe, IN REPAIR, complete all as specified and directed.