Difference between revisions of "Freeboard"
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Jenny Hill (talk | contribs) (Created page with "*In swales convey flowing water a freeboard of 300 mm is generally accepted as a good starting point. *In bioretention the freeboard is being defined as the depth bet...") |
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*In [[swales]] convey flowing water a freeboard of 300 mm is generally accepted as a good starting point. | *In [[swales]] convey flowing water a freeboard of 300 mm is generally accepted as a good starting point. | ||
*In [[bioretention]] the freeboard is being defined as the depth between the invert of the [[overflow]] and the the [[inlet]] 150 mm would suffice, so long as the inlet will not become inundated during design storm conditions. | *In [[bioretention]] the freeboard is being defined as the depth between the invert of the [[overflow]] and the the [[inlet]] 150 mm would suffice, so long as the inlet will not become inundated during design storm conditions. | ||
| − | *In above grade [[stormwater planters]] | + | *In above grade [[stormwater planters]], the equivalent dimension would be the depth between the invert of the overflow and the lip of the planter (150 mm minimum) |
*Where the stormwater planter is configured more like a lined/non-infiltrating bioretention system, the inlet will be the depth to which this is measured, as above (150 mm minimum). | *Where the stormwater planter is configured more like a lined/non-infiltrating bioretention system, the inlet will be the depth to which this is measured, as above (150 mm minimum). | ||
Revision as of 21:10, 14 November 2019
- In swales convey flowing water a freeboard of 300 mm is generally accepted as a good starting point.
- In bioretention the freeboard is being defined as the depth between the invert of the overflow and the the inlet 150 mm would 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 depth between the invert of the overflow and the lip of the planter (150 mm minimum)
- Where the stormwater planter is configured more like a lined/non-infiltrating bioretention system, the inlet will be the depth to which this is measured, as above (150 mm minimum).