(G) DOORS & WINDOWS - CIDCO Maharashtra Ltd.

(G) DOORS & WINDOWS
LIST OF BUREAW OF INDIAN STANDARD CODE OF PRACTICE (ISI)
4021 : Specification for teak wood.
287 : Recommendation for maximum permissible
moisture content
1141 : Specification for code of practice for
seasoning of timber.
2202 : Specification for wooden flush shutters.
401 : Code of practice for preservation of timber
1003
(Part –I &
II)
: Specification for timber paneled and glazed
shutters
6534 : Code for workmanship in wood work
2338 : Specification for code of finishing of joinery.
733 : Specifications for wrought aluminium and
aluminium alloys bars and sections.
285 : Specification for aluminium alloys bars and
sections.
1948 : Specifications for aluminium doors, windows
and ventilators.
1949 : Specifications for aluminium windows for
industrial buildings.
1477 : Code for hot dipped galvanizing
6243 : Code for rolling shutter.
1.0 ALUMINIUM WINDOWS AND DOORS: IS:1948 & IS:1949:
Aluminium alloy shall conform to IS: 733 and IS: 285. The
contractor shall submit the sample of section he is proposing
to use for the frame, for approval. He shall also indicate the

weight of section per one metre length. He shall also submit for
approval the sample of hinges, handles, pegstays or any other
items that may require the approval of the Engineer. The
contractor shall submit shop drawings for assembly and fixing
of doors & windows and fabrication shall be started only after
approval to the shop drawings.
The glass panes, unless otherwise specified, shall be of 5.2mm
to 5.5mm thickness for windows and 5.5mm thickness for doors
and shall be free from flaws, specks and bubbles. They shall
have property squared corners and straight edges. Fixing to
frames shall be done with approved glazing pins and
approved EPDM rubber gaskets as specified.
Frame consisting of extruded hollow rube sections or other
profiles shall be square and flat, the corner of the frame being
fabricated to a true right angle. The hinges shall be either or
projection type, or friction hinges. Necessary coupling of
approved shape shall be provided for composite windows. All
holes required for fixing frame, for fixing glazing shall be
provided. Only brass screws shall be used for fixing the frame
to concrete members.
Vertical and horizontal members shall be of adequate rigidity
to resist lateral forces. Design calculations shall be submitted
for deflection of members.
All the fixtures for center hung shutters, top and bottom hung
shutters, or side hung shutters shall be got approved before
they are used. The fixtures used should be such that it should

e possible to open the shutter to any angle. The pins of
hinges shall be of stainless steel of non-magnetic type.
Unless otherwise specified, aluminium doors shall be provide
with floor springs of approved quality and make.
All aluminium members shall be supplied in either matt or
polished finish including anodizing them by electrochemical
process to an approved colour and to a thickness of average
20 micron. The frame shall be protected with a layer of clear
transparent lacquer based methacrylates or cellulose
butyrate. The coating shall be removed after installation is
completed and after completing finishing work in the
adjoining area.
The erection of frame shall as detailed under steel windows.
Where aluminium frames come in contact with steel members,
they shall be separated by either a 3mm thick rubber gasket
for full width or aluminium member or any other approved film
so as to avoid metallic corrosion.
1.1 ROLLING SHUTTERS (IS:6248)
Rolling shutters shall be as per the size to suit the dimensions of
the openings shown in the drawing. Unless otherwise
specified, they shall be fabricated out of 18 gauge thick G.I.
laths of convex corrugation with rolling center either 75mm or
65mm and with minimum 12mm corrugation depth. The laths
shall be interlocked by alternate end clips.

The side guides shall either be of rolled section or one piece
pressed construction and shall be of size 25mm wide, 75mm
deep. Thickness shall not be less than 3mm.
The shutter shall be provided with bottom lock plate 3mm
thick and reinforced by an angle iron stiffener at the bottom
and G.I. flat at the top.
The suspension shaft shall be of adequate design and unless
otherwise specified shall be formed from 8 gauge seamless
tube, 60 mm O.D. with suitable flange coupling.
The springs shall be of approved high tensile steel flat or coil
spring hardened and tempered. These shall be fitted inside
the fabricated housing.
The ball bearings shall be double self aligning ball bearings
fitted inside CI housing fixed on side brackets holding the
suspension brackets at either ends.
The suspension of the shutter shall be bolted on specially
fabricated cages formed from G.I. flats and plates all are
welded.
The hood cover shall be made of 20 gauge G.I. sheets with
necessary stiffeners and framework.
The locking arrangement shall consist of hoop and stable on
the bottom plate, lockable from both the sides.

Unless otherwise specified, for overall area of rolling shutters
upto 5 sqm pull and push type hand operated shutters shall be
provided, for area from 5 sq.mtrs. to 10 sq.mtrs. and push type
with ball bearings shall be provided and area larger than 10
sq.mtrs. mechanically operated gear and/or electrically
operated shutters shall be provided (Gears will be paid extra).
The shutters, hook covers, etc. shall be given 2 coats zinc
chromate primer after thorough surface preparation and
further 2 coats of paint of approved quality and colour.
The erection of these shutters shall be carried according to
manufacturer’s specifications. While fixing to concrete
members, only shelf anchors shall be used. Chiselling of
concrete for fixing bolts will not be allowed.
1.2 COLLAPSIBLE STEEL GATE:
It shall consist of vertical double channels at 10 cm. centers.
The size of channels T. Section for top and bottom shall be as
per drawing and EIC. The gate shall be provided with
necessary bolts, nuts, locking arrangements, stoppers and
brass handles on both sides. The gate shall be painted with
one coat of anticorrosive paint before erection and two coats
of synthetic enamel paint of approved quality and shade. All
above material shall be of galvanized iron.
1.3 MODE OF PAYMENT AND MEASUREMENT
Aluminium Doors and Windows: The rate quoted shall include
the cost of supplying, fabricating and fixing in position frames,
glass panes, EPDM, all fixtures, hinges etc. anodizing, applying
protection cover embedding the holdfasts in concrete and/or

fixing the frame to concrete members with rawal plugs and
brass screws and where necessary the cost of EPDM (3mm
thick) barrier between aluminium member and steel member
etc. complete.
Measurement shall be on square metre basis for the actual
work provided.
FRP Doors Shutter: Supplying FRP molded shutters 35mm thick,
in panel, design as approved. FRP thickness to be 2.0m width
area extra reinforcements on sides and edges. The core of the
shutter to be polyol foam done in situ with wooden style
embedded for taking hinges, fixtures etc. both sides of shutters
to be finished in gel-coat. Shutters to have recess for hinges.
The whole shutter to be totally water proof resistant to mild
acids, alkalies Colour/painting as per direction of Engineer-in-
charge.
Measurements: Shutters shall be measured on Square metre
basis & Shutters shall be paid on actual dimensions of shutter in
sq.mtr.
Signature of Tenderer
Date.:
Additional Chief
Engineer(I&NT)
Date.: