Repairing and replacement of damaged structural member of iron stair case for emergency exit of Mitra Building including painting at Mitra Buildings, 8 Lyons Range, Kolkata - 700001 during the year 2026 - 2027.

Cutting to requisite length or shape departmental R.S. joists, channels, angles, tees, plates etc.

Labour for lowering and stacking after dismantling in parts R.S. joists, channels, angles, tees, plates etc.complete as directed. (a) From 2nd floor level

Collapsible gate with 40mm x 40mm x 6mm Tee as top and bottom guide rail, 20mm x 10mm x 2mm vertical channels 100mm apart in fully stretched position 20mm x 5mm M.S. flats as collapsible bracings properly rivetted and washered including 38mm steel rollers including locking arrangements, fitted and fixed in position with lugs set in cement concrete and including cutting necessary holes, chasing etc. in walls, floors etc. and making good damages complete. In 3rd floor.

Reparing collapsible gate by cutting out all rivets as necessary reassambling all members including welding pieces of channels, sraightening bent bars and rivetting with new rivets and fitting in position and painting two coats.

M.S. structural works in columns, beams etc. with simple rolled structural members (e.g. joists, angle, channel sections conforming to IS: 226, IS: 808 & SP (6)- 1964 connected to one another with bracket, gussets, cleats as per design, direction of Engineer-incharge complete including cutting to requisite shape and length, fabrication with necessary bolting, metal arc welding conforming to IS: 816- 1969 & IS: 1995 using electrodes of approved make and brand conforming to IS:814- 2004, haulage, hoisting and erection all complete. The rate includes the cost of rolled steel section, consumables such as electrodes, gas and hire charge of all tools and plants and labour required for the work including all incidental chages such as electricity charges, labour insurance charges etc. II) For Structural Works in Roof Trusses etc. using joists, channels and angles of specified section weighing less than 22.5 kg/ m

Welding in M.S. structural work with gas or electric: (a) Tack weld

(b) Continuous weld.

Cleaning the exposed corroded Reinforcement as well as worn out concrete by sand blasting with air compressor including all materials, hire charges of machineries and labour etc. all complete as per technical specification and direction of the Engineer-in-Charge.

Painting with ready mixed red lead paint of approved make and brand : (b) Two coats

(A) Painting with best quality synthetic enamel paint of approved make and brand including smoothening surface by sand papering etc. including using of approved putty etc. on the surface, if necessary : (b) On steel or other metal surface : With other than hi-gloss of approved quality- (iv) Two coats (with any shade except white)