Difference between revisions of "Freeboard"
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*In [[swales]] conveying flowing water a freeboard of 300 mm is generally accepted as a good starting point. | *In [[swales]] conveying flowing water a freeboard of 300 mm is generally accepted as a good starting point. | ||
| − | *In [[bioretention]] the freeboard is the difference between the invert elevation of the [[ | + | *In [[bioretention]] the freeboard is the difference between the invert elevation of the [[inlet]] and [[overflow]] structure. 150 mm will usually suffice, so long as the inlet will not become inundated during design storm conditions. |
| − | *In above grade [[stormwater planters]], the equivalent dimension would be the difference between the invert elevation of the [[overflow]] structure | + | *In above grade [[stormwater planters]], the equivalent dimension would be the difference between the invert elevation of the lip of the planter and the [[overflow]] structure (150 mm minimum). |
Latest revision as of 00:48, 7 June 2022
- In swales conveying flowing water a freeboard of 300 mm is generally accepted as a good starting point.
- In bioretention the freeboard is the difference between the invert elevation of the inlet and overflow structure. 150 mm will usually suffice, so long as the inlet will not become inundated during design storm conditions.
- In above grade stormwater planters, the equivalent dimension would be the difference between the invert elevation of the lip of the planter and the overflow structure (150 mm minimum).