Selection
To select the correct combination
of trough and lid, the following
points regarding the installation
should be considered before
referring to the CG and LT Access
Ducting Selector Charts.
- Internal dimensions of duct, to
house the services together
with sufficient working space
to permit installation,
maintenance and future
additions.
- Location of Access Ducting and
types and frequency of traffic
it will meet during its service
life.
- Weight constraints imposed by
the need to remove the lid to
gain access to the ducting at a
future date.
- The need for lifting
inserts/anchors in the lid to
enable attachment of
mechanical handling devices to
gain access to the ducting at a
future date.
Selector Chart - LT Access Ducting
Selector Chart - CG Access Ducting
Trafficking Application Classes
Indicates that a product is suitable
for a particular application.
Class 1 Pedestrian areas e.g.
footways, walkways and cycle
tracks.
Class 2 Private driveways and
grassed areas e.g. parkland
maintained with mowing
equipment.
Class 3 Car parks and access
roads subject to occasional
commercial vehicle traffic e.g.
Water and Sewage Treatment
Works.
Class 4 Lorry parks and kerbside
(non public highways) i.e. All road
going vehicles at 15 mph max.
NOTES: Select next higher grade of
unit if channelised trafficking or an
excessive amount of commercial
traffic is anticipated.
Serviceprotection CG/LT Access
Ducting requires similar trafficking
performance to linear drainage.
Loading test data and trafficking
application classes are based on a
linear drainage standard, DIN 19580,
which forms the basis of a draft
European Standard. Units have been
subjected to test loads from 15kN
(Class 1) up to 400 kN (Class 4).