NATIONAL ALUMINIUM COMPANY LIMITED - Rites

Dado in toilets and pantries shall be up to 2.1 m height from finished floor level. Skirting and
dado shall match with the floor ffinish.
23.2 Interior Wall / Ceiling Finish
For all air - conditioned areas and stair case acrylic emulsion paint of approved make and
shade over 2-3 mm cement based putty of approved make shall be provided provided. For toilets
minimum 5 mm thick decorative coloure coloured d ceramic tiles of approved make and shade with
approved pattern up to 2.10 m. height from finished floor level shall be provided. Oil bound
distemper over 2-3 mm cement based putty of approved make above 2.10 m height shall be
provided. For all other area areas s oil bound distemper ( IS : 428 ) of approved shade over cement
based putty of approved make shall be provided. For battery room and other areas coming
in contact with acid / alkali fumes, chemical resistant chlorinated rubber paint shall be
provided above e 2.1 m height. Up to 2.1 m height from finished floor level acid alkali resistant
tiles shall be provided as specified elsewhere. All R. C. C. ceilings shall be oil bound
distemper over cement based putty putty.
23.3 Exterior Finish
Aluminium Industrial troughed sheet cladding ( non - insulated ) of approved colour
combination shall be provided for transfer points, conveyor galleries, elevator shafts, and
parapet walls of buildings where metal cladding is specified. Exterior weathered coat paint
shall be provided for the under mentioned areas :
(a) All buildings with R. C. C. framework unless specified otherwise in this specification
(b) Brick work in the lower portion of metal cladding.
(c) Fire walls
(d) Projections and facia : R. C. C. parapets ( excepting parapets of buildings
(e) where metal cladding is specified )Exterior brick walls.
24.0DOORS, DOORS, WINDOWS AND ROLLING SHUTTERS.
24.1 Doors and Windows
All doors, windows and venti ventilators of control room building and M. C. C. buildings shall have
Electro colour coated (anodised) aluminium frame work with glazing. All doors of office and
toilet areas shall be of factory made pre pre- laminated particle board (M D F exterior grade). All
other buildings shall have steel doors, windows and ventilators. Single glaz glazed panels with
aluminium framework shall be provided as partition between two air - conditioned areas
wherever clear view is necessary. Coal conveyor galleries shall have steel windows of
openable type. The window shutters shall be provided with M. S. louv louvers. All steel doors
shall consist of double plate flush door shutters. The door shutter shall be 45 mm thick with
two outer sheets of 18 G rigidly connected with continuous vertical 20 G stiffeners at the
rate 150 mm centre to centre. Side, top and bottom edges of shutters shall be reinforced by
continuous pressed steel channel with minimum 18G. The door shall be sound deadened by
filling the inside void with mineral wool. Doors shall be complete with all hardware and
fixtures like door closer, tower bolts bolts, , handles, stoppers aldrops, etc. Windows of coal
galleries shall be provided with welded wire fabric of 1.6 mm thick wire as per IS: 4948 and
12 mm x 30 mm mesh size. Wherever functionally required rolling shutters shall be provided
and these shall be electrically ctrically operated. In transfer points, windows near floors shall be steel
and openable types. The window shutters shall be provided with MS louvers. Windows /
ventilators at higher level can be of steel with fixed glazing. All openable windows shall be
provided ovided with suitable stays. All windows and ventilators onground floor of all switchgear
Technical Specification:Sec-7, Civil
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