SPEL Vortceptor, Installation Manual

Page: 8 / 14

8 Installation Manual
Vortceptor
H. TOP PAD
The wetwell is designed to support the dead weight
of an 200mm thick square pad 600mm larger than
the diameter of the wetwell (centered on the wetwell)
along with a dynamic T-44 traffic load as long as the
pad is designed to distribute the loads on the wetwell
perimeter and not on the interior of the lid.
If the static load will exceed the 200mm pad weight
or the traffic load will exceed T-44, the pad must be
1200mm larger than the wetwell diameter (centred on
the wetwell) and all of the pad and / or traffic loads
must be supported by the soil around the wetwell and
not by the wetwell itself.
Fibreglass flat tops 1000mm through 2500mm
diameter are designed to support 200mm concrete
pads without internal supports while the concrete
cures.
The concrete pad must be designed to be self
supporting after cured.
The pad shall be specified by the Certified Engineer.
FIBREGLASS FLAT TOPS WITHOUT TRAFFIC
LOAD
(See Figure H-1)
• The pad must be larger than the wetwell a
minimum of 300mm in all directions.
• Maximum 200mm concrete pad thickness.
FIBREGLASS FLAT TOPS WITH TRAFFIC LOAD
(See Figure H-2)
•
The pad must be larger than the wetwell a
minimum of 600mm in all directions.
• The Certified Engineer shall specify the pad
strength and reinforcement so that the static
weight of an 200mm thick square pad (no more
than 600mm larger than the diameter of the
wetwell centred on the wetwell) along with a
dynamic T-44 traffic load must be distributed on
the wetwell perimeter and not on the interior of the
lid.
• If either the static pad load or the dynamic traffic
load is ex- ceeded, all of the pad and / or traffic
loads must be supported by the soil around the
wetwell and not by the wetwell itself.
TRAFFICABLE MANHOLE
Ensure cover is installed to manufacturers instructions.
SPEL drawing is a guide (page 9).