Repair/Maint of pressed Steel OH tank including painting and misc repair work at water supply installation under HQ 25 Sect AR, Jorhat

Amount

Laying and Jointing PVC Pipe. Heading

Dismantling and taking down existing pressed steel bottom plates side plates of side plates of size 1.22mtrx1.22 mtrx5mm thick as directed from 90000 Ltr / 20000 gallons capasity steel Overhead tanks on 15 metre high stagging carefully without damaging other members after unscrewing bolts, nuts,washers etc and separating serviceable plates and keep in safe custody for reuse at site complete all as specified and as directed. (NOTE : Serviceable plates shall be segregated and stacked properly duly cleaned at site of work for re-use and all other unserviceable plates nut bolts and washers etc shall be removed from site of work as directed).

Supply, erection, hoisting and fixing of new pressed steel side plates of size 1.22mx 1.22mx 5mm thick(with necessary jointing materials) made to required shape, making necessary holes through drilling for fixing of bolts and nuts including provision of proper arrangement of lead joint in between plates as require at site to existing water tank at 12 mtr high stagging complete all as specified and directed.

Fixing only old serviceable and repaired pressed steel side plates of size 1.22mx1.22mx5mm & bottom plates 1.22mx1.22mx6mm thick(with necessary jointing materials) made to required shape, making necessary holes through drilling for fixing of bolts and nuts including provision of proper arrangement of lead joint in between plates as require at site to existing water tank at 12 mtr high stagging complete all as specified and directed.

Repairs to damaged portion of pressed steel tank plates for 9600 Gallons PS Overhead Tank of existing gauge and size by means of welding over the hole upto 20mm dia with new Mild Steel plate of size 15 cm x 15 cmx6mm thick on the inner side of PS tank and testing complete all as specified and as directed.

Dismantling of rusted angle iron bracing and tie bar from Pressed Steel overhead Tank on 12 meter high staging by unscrewing nuts, bolts and washers etc complete all as specified and as directed.

Material and labour for mild steel Fe 410 -W (Gde- E- 250) quality- A Fe angle iron 65x65x6mm as in tie bar, cross arm, bracing etc as required and directed including making necessary holes through drilling for fixing of bolts and nuts to existing pressed steel tank on 12m high staging and painting with two coats of aluminium painting over a coat of red oxide zinc chrome primer complete all as specified and as directed.

Supply, erection, hoisting and fixing of mild steel top plate/roof sheet 3.15 mm thick made to required shape by making necessary holes through drilling for fixing of nuts, bolts and fixed to existing pressed steel water tank on 12 metre high staging including dismantling/taking down existing unserviceable sheet complete all as specified and as directed.

Fixing only serviceable nuts, bolts and washers of appropriate length and of dia 16 to 20 mm required for fixing of steel plate, tie bars and bracing etc complete all as specified and directed.

Supply and fix mild steel machine made nuts, bolts and washers etc dia of 16 to 20 mm as required for fixing of steel plate, tie bars and bracing etc complete all as specified and directed.

Material and labour for preparing internal surfaces of PS over head tank, 12 mtrs high stagging of 9600 gallons capacity, over 10 cm width or girth, and applying with two coats of black bituminous paint ( suitable for drinking water purpose) complete all as specified and as directed.

Material and labour for preparing external surfaces of PS over head tank, 12 mtrs high stagging over 10 cm width or girth, scraping with steel wire brushes and applying two coats of aluminium paint (over surface of PS tank ,stagging, etc) over a coat of red oxide zinc chrome primer, complete all as specified and as directed.

M&L for fixing leak proof materials comprising of lead wire, glass wool and black putty in existing pressed steel tanks to ensure water tightness after taking out old existing jointing materials by burning with blow lamps and cleaning and jointing surface complete all as specified and as directed by Engineer-in-charge.

Material and labour for Preparing Old Painted Steel Surfaces of Pipes those are exposed & laid horizontally at pump houses not exc. 100mm Width or Girth by Scrapping with Mild Steel Wire Brush and Sand Papering to remove all the Loose Paint, Sludges, Rust, etc. and applying one Coats of Synthetic Enamel Paint over a Coat of Red Oxide Zinc Chrome Primer, incl making arrow sign complete all as specified and as directed.

Supply and fix mild steel framed work as ladder, cleats ,areation tower and similar work in water tank conforming to Fe 410-O or Fe 310-O by welding or screwing nut bolt & washer, including applying two coats of black bituminous lead free paint (Suitable for drinking water) over a coat of red oxide primer on MS work those are carried out internal side of PS tank & applying two coats of Synthetic Enamelled paint over a coat of red oxide primer on MS work those are carried out outer side of Tanks after preparation of surfaces complete all as specified and directed.(necessary New nuts, bolts, washers will be included in quated rate.)

Binod And Co (BID ID -3213854)