Stormwater/drainage design codes
Stormwater/drainage design codes
(OP)
Hi all,
As a civil/stormwater engineer I am accustomed to designing treatment practices to our state manual, but our manual (Vermont) is primarily geared toward sizing for treatment volumes, not conveyance and collection and the associated risk of flood damage to surrounding infrastructure. Is there any national building code that establishes proper sizing for certain collection components (e.g. pipe sizing, roof drain sizing, trench drains, etc..) Obviously we design to at least the size of our largest required treatment event, but I was just curious if there was a code out there that we were not aware of. I've seen a 25 year event as a standard, but sometimes this is too big or too small of an event for the application.
Thanks in advance.
As a civil/stormwater engineer I am accustomed to designing treatment practices to our state manual, but our manual (Vermont) is primarily geared toward sizing for treatment volumes, not conveyance and collection and the associated risk of flood damage to surrounding infrastructure. Is there any national building code that establishes proper sizing for certain collection components (e.g. pipe sizing, roof drain sizing, trench drains, etc..) Obviously we design to at least the size of our largest required treatment event, but I was just curious if there was a code out there that we were not aware of. I've seen a 25 year event as a standard, but sometimes this is too big or too small of an event for the application.
Thanks in advance.





RE: Stormwater/drainage design codes
RE: Stormwater/drainage design codes
However, in some unincorporated counties and out of the way places, the regs are a little iffy.
In these cases, I default to the UFC (Unified Facilities Criteria, formerly Army Technical Manuals) concerning drainage issues. The UFCs are free at their website if you Google it. As cvg points out, you still have to meet all local codes.
RE: Stormwater/drainage design codes
Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East - http://www.campbellcivil.com
RE: Stormwater/drainage design codes