PACKAGE : I Bid Document VOLUME : II - Public Health Engineering

All outlets such as switches, wall sockets etc. shall be flush type.
The outlet box shall be same as above and shall be mounted flush with the wall.
The metal box shall be efficiently earthed with conduit by an approved means of
earth attachment.
To facilitate drawings of wire in the conduit. G.I mesh wire of 10 SWG shall be
provided while laying of recessed conduit.
Fans, Regulators and Clamps (IS:374):
Ceiling fans including their suspension shall conform to relevant Indian Standards.
All ceiling fans shall be wired to ceiling roses or to a special connector boxes and
suspended from hooks or shackles with insulators between hooks and suspension
rods. There shall be no joint in the suspension rod
For concrete roofs, ceiling fan hooks shall be buried in the concrete during
construction. M.S. flat of size 40 mm x 60 x mm bent in the form of an inverted
‘U’ supported on two cross rods or cross flats. 60 mm long which are bound
together to the top reinforcement of the roof shall be used. The distance between
the vertical legs shall not be less than 15 cm. and the legs shall project at least
13cm below the ceiling and oval holes shall be made in them for carrying a 15 cm
dia. rod hook.
Alternatively a 15mm dia, MS rod in the shape of ‘U’ with their vertical legs bent
horizontally at the top at least 19cm. on either side and bound to the top
reinforcement of the roof shall be used.
In building with concrete roofs having a low ceiling height where the fan clamp
mentioned under clause (c) can not be used or whatever specified, recessed type fan
clamp inside a cast iron box shall be used.
Canopies on top of suspension rod shall effectively hide the suspension.
Unless otherwise specified all ceiling fan shall be hung 2.75m above the floor.
In the case of measurement of extra down rod for ceiling fan including writing the
same shall be measured in units of 10cms. Any lengths less than 5cm. shall be
ignored.
GTS : General Technical Specification. Page 129