IMPORTANCE OF TESTING TESTING PROCEDURE
'We desire to emphasise that the
application of a suitable test to a new A For equipment used
drainage system is a matter of great see detail sheet No. 38
importance to the workmen...
Yard gully to 8S65 Angle or Phillips Gully Reversible Gully
R o u n d to p fo r u s e
w ith r a is in g p ie c e Hopper can be turned in P la in e n d e d
any direction independent
P 't r a p of trap
,6 4 m m Available...
Centrifugally cast ('spun') iron 3. Under buildings. Materials of less
pipes for water, gas and sewage. strength than cast iron can be
BS1211 :1981 considered for this situation without the Socket
requirement of being surrounded...
BUILDING REGULATIONS EQUIPMENT FOR PLUGGING
Approved Document H1 - watertightness.
Item 2.27 lays down minimum standards Expanding drain plugs Plugging top of vent pipe
for gravity drains and private sewers up to Sizes range from 50 mm...
PIPES AND FITTINGS
At present time, three groups of British
8tandard specifications cover upvc pipes Pipes can be supplied - Universal Inspection Chamber -
recommended for use as drain or sewer 1. Both ends plain (use coupling...
BS Channel Interceptor Detail of Intercepting Chamber Fresh Air Inlet
Available in 100 mm to 450 mm - Fresh air inlet
nominal bore sizes (see section below)
To receive stopper Type B Vertical Inspection 600 mm -100m pipe
Square Curved Square Oblique
Also available as half section 8865 Also available as 8865 8865 Also available as half section
channel junctions half section channel junctions
90" ( 90°
CHOICE OF HEADING OR TRENCH
Minimum size of heading
1.4mxO.75 m Over 9 m usually
Good ground Services cheaper to tunnel Heading
' 1.5 m i
300 mm sewer .
As depth of trench increases it may be 1. Nature of the ground 3...
British Standard Markings 8565:1981
~ Licence Number Grooves Lengths of Straight BS BS BS65 Licensed Pipes & Channels sizes sizes
Manufacturers only BS pipes can be made mm mm
If other ordinary BS pipes, then plus one...
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