Specifications

NAIROBI OPERATIONAL HUB
UNOPS Building, UN Lane, Off UN Avenue Tel: [phone]
P.O Box 783,Village Market, 00621 E-mail: [e-mail]
Nairobi, Kenya Website: www.unops.org
UNOPS is ISO 9001 certified
1.05 SUBMISSION
A. Cut away samples with manufacturer's details.
B. Shop drawings of proposed conduit layouts
PART 2 - PRODUCTS
2.01 STEEL CONDUITS (G.I Conduit)
Steel conduits shall be heavy gauge steel conduit hot dip galvanized inside and
outside. The steel conduits, all junction boxes and other accessories shall be
accordance with British Standard 4568 Parts 1 and 2 and shall be Class 4. The
internal diameter of conduits shall be not less than 20mm.
All conduit boxes shall be constructed in malleable iron and in accordance with
British Standard 31 Class B in the case of standard junctions or Class B5 where
conduit is looped from point to point. All conduit work shall be so arranged to
permit wiring to be drawn in after completion of conduit work. Where conduit
work is concealed above suspended ceilings or in other building finishes the
wiring shall be possible without disturbance to the building finishes. The conduit
work at lighting points shall always be terminated in a standard or loop-in
junction box and such boxes shall be firmly secured to enable the luminaire to be
fixed to the lugs of the conduit box and be suspended therefrom without other
support. Where conduits are terminated in a box without a screwed spout the
junction shall be made by means of a coupling and an external thread brass bush
with hexagon head.
In general, conduits shall be concealed within the building structure, behind
suspended ceilings, within partitions, in floor screeds or plaster finishes. No
conduit work shall be exposed on the surface unless this is specified or in services
plant rooms. All external work shall be carried out using galvanized steel conduit
and accessories. The installation shall be electrically and mechanically continuous
throughout and where polyvinyl chloride conduit is utilized this shall be achieved
by the use of a separate polyvinyl chloride insulated earth wire installed
throughout the conduit run with terminations being made in conduit boxes or