NATIONAL ALUMINIUM COMPANY LIMITED - Rites

and M. C. C. buildings shall be provided with suitable anodized aluminium grill. Fire - Proof
doors with panic devices shall be provided at all fire exit points as pe per r the recommendations
of statutory regulatory bodies These doors shall generally be as per IS : 3614 ( Part I and Part
II ). Fire rating of the doors shall be as per requirements of statutory regulatory bodies.
However minimum rating shall be 2 hours. Thes These e doors shall be double cover cover-plated types
with mineral wool insulation. Hollow extruded section of minimum 3 mm wall thickness as
manufactured by INDAL or equivalent shall be used for all aluminium doors, windows, and
ventilators. Doors and windows on ext external ernal walls of the buildings having brick enclosures i.e.
enclosure other than with Aluminium Industrial troughed sheet cladding, shall be provided
with sunshade over the openings with width 600 mm more than the opening width.
Projections from the wall fo for r the sunshade shall be 450 mm over window openings and 750
mm over door openings. Minimum size of door provided should be 2.1 m high and 1.2 m
wide, except for toiler rooms, where door may be 0.75 m wide. All doors ( other than those
in W/C and urinal area a ) shall be double plate flush door shutters. For W/C and urinals area,
wooden panel doors shall be provided. Area of windows shall be at least 10 % of the floor
area of the respective building. The area of translucent polycarbonate sheet panels shall als also
be at least 10 % of the floor area of the respective building. Monorail doors shall be provided
with steel stays / chains etc for convenient operation of the shutters. The louvre blade shall
be ‘Z’ shaped and made out of 18G sheets in EZ7 steel frames. TThe
he frames shall be of ISMC
100.
24.2 Rolling Shutters
Rolling Shutters/ grills shall be with motor drives, gear arrangement including all accessories
and shall conform to IS: 6248. All electrical work shall be in strict accordance with the
relevant Indian Electricity Rules. After installing the shutters, the Contractor shall test the
performance of the shutter in presence of the Engineer. The shutters shall be smoothly
operable under all ambient conditions. All control and locking devices shall give fault f ffree
performance.
25.0 PAINTING
Painting of all steel structures, including seal plates, hand rails, steel doors & windows,
ventilators, louvers, Rolling Shutters Stair Cases (except gratings), etc. shall be as per
specification mentioned elsewhere in this document.
26.0 Miscellaneous
26.1 Ordinary form work shall be used in roofs and floor slabs in transfer houses, footings,
pedestals, cable trenches, pits etc., Plywood form work shall be used for all over ground
exposed work like columns, beams, floors an and d ceilings in control room and M. C. C. buildings.
26.2 Monorail girders and fixtures shall be provided for monorails at the locations as
required and as described elsewhere in these specifications or drawings. Monorail openings
in the walls shall be prov provided ided with steel frame doors preferably sliding type or otherwise
open able inside, access platforms and ladders.
26.3Steel Steel frame around openings in roof and on external walls for mounting of exhaust
fans shall be provided.
26.4 Ready mix non - shrink nk cementitious grout of reputed manufacturer as approved by
the Employer shall be used for grouting of block outs and foundation bolts, underpinning of
base plates and machine bases. Crushing strength of grout shall be one grade higher than
the foundation concrete. Minimum crushing strength shall be 30 N / mm2 unless higher
strength requirement is specified by the equipment supplier or the grout manufacturers.
26.5The The bottom of steel in case of cable / pipe galleries and trestles shall be generally 3m
Technical Specification:Sec-7, Civil
Page 17 of 21