Catch Basin Hanging Trap / Horizontal Orifice Plate
Catch Basin Hanging Trap / Horizontal Orifice Plate
(OP)
Hello,
I am looking for detail drawings for a catch basin "hanging trap" aka "horizontal orifice plate". To be clear, this is an insert which sits just below the catch basin frame & grate and restricts the flow into the catch basin and thereby forces water to pond on the road. It should be somehow removable to allow for the cleaning of the catch basin as required.
While I have been able to find many examples of vertical orifices and goss traps, I am having trouble finding information on this type of horizontal orifice beyond the fact that they exist.
Thank you.
I am looking for detail drawings for a catch basin "hanging trap" aka "horizontal orifice plate". To be clear, this is an insert which sits just below the catch basin frame & grate and restricts the flow into the catch basin and thereby forces water to pond on the road. It should be somehow removable to allow for the cleaning of the catch basin as required.
While I have been able to find many examples of vertical orifices and goss traps, I am having trouble finding information on this type of horizontal orifice beyond the fact that they exist.
Thank you.
David Dietrich
KMK Consultants Ltd
Windsor, Ontario, Canada





RE: Catch Basin Hanging Trap / Horizontal Orifice Plate
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On pp 109-110 has an Inlet Protection which sounds like what you want, but it is above the grate.
Remember: The Chinese ideogram for “crisis” is comprised of the characters for “danger” and “opportunity.”
-Steve
RE: Catch Basin Hanging Trap / Horizontal Orifice Plate
RE: Catch Basin Hanging Trap / Horizontal Orifice Plate
David Dietrich
KMK Consultants Ltd
Windsor, Ontario, Canada
RE: Catch Basin Hanging Trap / Horizontal Orifice Plate
RE: Catch Basin Hanging Trap / Horizontal Orifice Plate
The minimum orifice I can use is 100mm (4") due to local standards and clogging issues. If the orifice was placed on the connector pipe it won't restrict the flows enough to create road storage.
David Dietrich
KMK Consultants Ltd
Windsor, Ontario, Canada
RE: Catch Basin Hanging Trap / Horizontal Orifice Plate
I too work in Southern Ontario...currently in London, but have worked in Windsor. Anyway, I have been finding recently that more and more municipalities are not accepting the horizontal CB lid orifices for fear that they can be removed too easily. At one time I had information on these but can no longer find it.
Would an orifice plug (such as the ones produced by IPEX) be of any use ?
RE: Catch Basin Hanging Trap / Horizontal Orifice Plate
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Covered in this topic: http://ww
Just a thought outside the box...
RE: Catch Basin Hanging Trap / Horizontal Orifice Plate
RE: Catch Basin Hanging Trap / Horizontal Orifice Plate
RE: Catch Basin Hanging Trap / Horizontal Orifice Plate
For private parking lots we are generally allowed 150mm of ponding for a maximum of 1 hour for the 1:2 year storm event up to a maximum of 300mm for the 1:100 year event. In practical terms though, we generally end up with less than the allowable 1:2 year ponding amount if the outlet from the catch basin is sized to only allow 300mm of ponding under the 1:100 year event.
Since ponding is allowed, we take advantage of it to keep construction costs down. In this area the owners would rather put up with a little flooding in their parking lots once in a while rather than pay the increased costs for some other form of detention.
David Dietrich
KMK Consultants Ltd
Windsor, Ontario, Canada
RE: Catch Basin Hanging Trap / Horizontal Orifice Plate