PROVN OF OBSTACLES AND ALLIED WORKS SERVICES AND LIGHTING ARRESTER AT AF STATION UNDER GE (AF) CHABUA

Amount

B/R Works:- Excavating in trenches, n exc 1.5 m wide and n exc 1.5 m in depth; for foundation, etc. or for shafts, wells, cesspits, manholes, pier holes, etc. n exc 10 sq m on plan and n exc 1.5 m in depth and getting out in any type of soil complete all as specified and directed.

M&L for cement concrete type D-2 1:4:8 (using 40mm graded aggregates) as in foundations, filling and mass concrete complete

M&L for cement concrete type B-1 1:2:4 (using 20mm graded aggregates) as in filling of iron pillars / kneeler blocks including necessary use & waste of formwork as directed complete

M&L for Brickwork with subclass ‘B’ old size bricks, straight or curved on plan exc 6m mean radius built in cement mortar 1:6 complete

M&L for rendering 15mm thuick on brick work in CM 1:4 for other than fair faces of external wall surfaces and sponge finished complete all as specified and directed.

M& L for preparation of newly plastered surfaces of wall and applying two coat of acrylic emulsion over a coat of alkali resistant primer of same make over one coat of white wash complete all as specified and directed for external walls Note : Arcylic emulsion of BERGER / ASIAN PAINT/DULUX etc with minimum warranty period of 05 years to be used with primer of the same make

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exc 25 cm. complete all as specified and directed.

Removing excavated soil exc. 250 m but n exc. 500 m and depositing where directed out side defence land complete all as specified and directed.

S&F MS work as in framed work such as grills, gratings, etc.. with ends of bars shouldered and/or riveted, or forged into spikes; framed guard bars; barred iron doors; ladders; framed balusters; walk ways; railings; framework of water tanks, bolts / pully for hanging rope / hooks / plates etc and similar work conforming to Fe.290.Gde-E-165, complete all as specified and 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 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. 11 here-in-before but plain sheet as in ridges, eves gutters, facia board inclusive of forming half round channel etc complete all as specified and 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 coconut rope min dia 45mm (any strand) suitable for climbing / training obstacles as in obstacle courses complete all as specified and directed

S&F MS turn buckles with bolt and screws suitable for 40-60mm dia rope / pipes complete all as specified and directed

S&F first class hard-wood in scantlings wrought in framed work complete all as specified and directed

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&L preparation of newly wooden surfaces over 10cm width or girth and applying two coats of synthetic enamel paint over a coat of pink primer complete all as specified and as directed.

Surface excavation n.exc (not exceeding) 30 cm deep and averaging 15cm deep and getting out in soft loose soil complete

M&L for sand filling under floors or in foundations including watering and consolidation complete all as specified and directed

M&L for broken stone hardcore of gauge n exc. 63 mm, deposited, spread and levelled in layers n exc. 15 cm thick, watered and rammed to a true surface complete all as specified and directed

M&L for 100mm thick cement concrete type D- 2, 1:3:6 (40mm graded aggregate) as in sub base complete all as specified and directed

M&L for providing and laying 60mm thick factory made rubber moulded glossy finished chamfered edge cement concrete paver block of M-35 grade with approved colour, design & pattern as in footparth, parks, lawns, drive ways or light traffic parking etc., of required strength, thickness & size/ shape, made by table vibratory method using PU mould, laid in required colour & pattern over and including 30mm thick compacted bed of fine sand, compacting and proper embedding/ laying of inter locking paver blocks into the sand bedding layer through vibratory compaction by using plate vibrator, filling the joints with sand and cutting of paver blocks as per required size and pattern, finishing and sweeping extra sand complete all as specified and directed

E/M Works:- M & L for maintenance free chemical earthing system complete with 03 (three) nos copper bonded rods, 17.2 mm dia 3000 mm long electrode buried at suitable distance apart directly in ground, to bore holes of 120 mm dia vertically to a depth not less than 3.60 mtr deep below ground level with top edge of earth electrode at a depth not less than 100 mm below normal ground level, provision of clamps or brazed or both for each copper bonded rods made of cupper and copper strip of size 25 x 3 mm & strip connection on the top of the electrode and copper strip of size 25 x 3 mm for inter connection of 03 nos copper bonded rods and laying at least 500 mm below in the ground and further connected to test point terminal block (copper strip and test terminal block shall be measured separately), including back filling of bore holes with advanched earth enhanhencing compound 96 kilogram (minimum) of Make : Erico or equivalent of Macmet/True Power/Ennov for artificial treatment to soil so as to achieve earth resistance below 01 Ohms as specified in para 19.140 of SSR Part-1 (2009), including provision of earthing pit in PCC(1:3:6) type C1 pre-cast cover RCC slab of size 400 x 400 x 50 mm with one handle made out of 8 mm dia round bar, including necessary earth work and three coats of white wash on plastered surface (exposed surfaces) and testing complete all as directed and including necessary earth work and testing complete all as specified and directed.

Supply and fixing copper strip of size 20 x 3.15 mm with saddles with required porcelian insulator , fixing screws etc. for roof conductors and down conductors complete all as specified and directed.

S&F GI tube light grade 50mm dia with all fitting and laid in floors, under road, pavement or hard standing for protection of earthing strip including takingout GI pipe complete all as specified and directed.

Test point terminal block made of copper size 300 mm x 32mm x 6mm, drilled and screwed including 3 Nos. 8 mm dia. screw hex. Head screw and MS cover made of 2mm thick sheet including provision for entry/exit of earth strip

M&L for GI mast 6 mtr long 50 mm dia fix in 1:2:4 cement concrete base with suitable depth as per site requirement complete all as specified and directed by Engr-in-Charge.

M&L for lighting strike recorder as per manufacture complete all as specified and directed by Engr-in-Charge.

M&L for single core copper cable of size 70 sqmm with lugs complete all as specified and directed by Engr-in-Charge.

D.D Construction (BID ID -3248484)

M/s Sashi Enterprise (BID ID -3248979)

JIBAN CHANDRA MEDHI (BID ID -3247377)