ADDITION/ALTERNATION TO BLDG. NO 7 (STN ARMOURY) AT AF STATION UNDER GE (AF) CHABUA

Amount

Dismantling asbestos cement (corrugated, semi-corrugated etc) sheets in roof coverings complete all as specified and directed. Note : Debris if any to be removed outside defence land and no extra cost will be admissible on this ground

Dismantling timber scantling 40 Sqcm and over in section, in any position of framed work complete all as specified and as directed

M&L for MS structural steel work, framed as in trusses, purlins, rafter, post etc. conforming to grade E-250 (Fe-410W, quality A) including shaped washers including necessary cutting required length, notching drilling, riveting and or welding or connecting with nut bolts with angle cleats, fish plat, gusset plate and also erecting in true position complete as directed.

S&F gusset plates, angle, cleats etc incl necessary welding drilling for fixing confirming to Gde E-250, Fe-410, Quality-A complete all as specified and directed.

S&F prepainted galvalume aluminium zinc coating GI based corrugated steel sheet 0.50 mm thick of colour having tensile strength of 550 Mpa as in roof covering/cladding to wall, fixed with self tapping screws or 'J' / 'L' hooks complete all as specified and directed.

All as per item No. 05 here-in-before but plain sheet as in ridges, gutters, facia bd etc complete all as specified and directed.

M&L for brick work with sub class 'B' bricks, straight or curved on plan exc 6 m mean radius built in CM 1:6 complete all as specified and directed.

M&L for PCC 1:2:4 type B -0 (using 12.5mm graded stone aggregate) as in coping and kerbs etc including necessary form work etc complete all as specified and directed

Taking down cement plaster on brick or stone walls etc including racking out joints hacking for key and scrubbing down with water etc complete all as specified and as directed. Note : Debris if any to be removed outside defence land and no extra cost will be admissible in this ground

M&L for rendering 15 mm thick plaster in CM (1:4) on brick wall or concrete surfaces finished even & fair complete (without using extra cement) all as specified.

M&L for rendering 15 mm thick in CM (1:6) on fair faces of brick of brick or concrete surfaces finished even & fair,(without using extra cement) complete all as specified.

M&L for complete removal of existing finishes / preparation of newly plastered surfaces of walls and finishing walls with acrylic Smooth exterior paint of required shade : New work (two or more coat applied @ 1.67 ltr/10 sqm over and including priming coat of exterior primer applied @ 2.20 kg/10 sqm) all as specified.

M&L for preparation of newly plastered surfaces of wall and applying three coats of white wash complete all as specified and as directed.

M&L for preparation of old decorated plastered or unplastered surface of wall and applying one coat of white wash, complete all as specified and as directed.

M&L for preparation of old painted steel surfaces over 10 cm width or girth and applying one coats synathetic enamel paint upto any height as directed and complete all as specified.

M&L for preparation of new or previously untreated surfaces of steel of any description over 10 cm width or girth not otherwise described and applying two coats of synthetic enamel paint over a coat of red oxide primer complete all as specified and directed.

M & Lin replecement for Air termination, single pointed, copper rod 12mm dia and 300mm long complete all as directed.

Supply and fixing copper strip of size 20 x 3 mm with saddles with required porcelian insulator , fixing screws etc. for roof conductors and down conductors complete all as specified and directed.

Supply & lay GI pipe medium grade 40 mm dia for protection of earth conductor complete all as specified and directed.

M&L, in repair, Test point terminal block made of copper size 300 mm x 32mm x 6mm, drilled and screwed including 4 Nos 8mm dia 25mm long hexagonal head brass screws including box of size 450x150x90mm made of 1.6mm plain sheet painted with two coats of synthetic enamel paint over a coat of red oxide primer and screwed to wall for protection of test point complete all as specified.

Earthing complete with copper earth plate electrode 60 x60 cm x 3.15 mm thick buried directly inground vertically (earth pit not less than 2.25 m deep below normal ground level) with the top edge of the earth plate electrode at a depth not less than 1.5m below normal ground level and including copper earth strip of size 20 x 3 mm bolted (with GI nuts, bolts & check nuts) and riveted to earth plate electrode at one end and nected to metallic bodies of HT/LT equipments etc at the other end, earth strip encased in and including 50 mm bore GI medium grade pipe with all fittings from top of earth plate electrode to body of equipment fixed with and including 25x 6mm flat iron clamps, bolts, nuts and washers and including providing watering pipe 20mm bore GI pipe medium grade from Bottom of concrete pit to top of earth plate electrode complete all as specified and shown in electrical plate No 3 of MES SSR Part-I. The scope of work includes necessary excavation and earth work in any type ofsoil, removal of soil upto 50 metre, PCC pit with precast RCC cover, charcoal/salt, funnel, CI frame etc complete. NOTES :-(i)The concrete pit shall be made in PCC 1:3:6 type C-1, using 12.5mm graded crushed stone aggregate 40mm thick precast cover slab of RCC (1:2:4), type B-1, using 20mm graded crushed stone aggregate with suitable MS handle in lieu of CI cover shown in electrical plate No 3 of MES SSR Part-I shall be provided. Reinforcement in RCC cover shall be of 8mm dia TMT bars laid @150mm c/c both ways (ii) Item includes the cost of 7.5 metre GI pipe for protection of earth strip. Any variation in length shall be measured and paid through deviation order. (iii) Item includes cost of 7.5 metre earth strips. Any variation in length shall be adjusted through deviation order. (iv) Earth plate electrode shall be surrounded by adequate quantity of charcoal dust and salt to a packed thickness of 15 cm on all sides.

M/s Parma Construction (BID ID -3168119)

D.D Construction (BID ID -3165752)

pintoo construction (BID ID -3164768)

M/S D P BERLIA (BID ID -3166420)

M/S DURGA CONSTRUCTION & CO (BID ID -3164710)

M/S MAHATO ENTERPRISE (BID ID -3164730)

M/s KL Agarwalla & Co (BID ID -3163913)