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Talk:Soakaways, Infiltration Trenches and Infiltration Chambers Guide (view source)
Revision as of 15:36, 26 September 2017
, 6 years agono edit summary
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|colspan="2" |Setback from building Foundation(m)|| 4 || || 4 || || || Max. load of 10:1 for infiltration systems (not specific to LID type) || ||
|colspan="2" |Setback from building Foundation(m)
| 4 || || 4 || || || || ||
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|colspan="2"|(Impervious drainage/treatment)area ||5:1-20:1, 10:1 recommended || || 5:1-20:1, 10:1 recommended || CDA < 5 acres || CDA < 2 acres (T), < 5 acres (B) || < 2 acres || || CDA: max. 15000 ft2|
|colspan="2"|(Impervious drainage/treatment) area
|5:1-20:1, 10:1 recommended || || 5:1-20:1, 10:1 recommended ||CDA < 5 acres||CDA < 2 acres (T), < 5 acres (B)||< 2 acres || Max. load of 10:1 for infiltration systems (not specific to LID type)|| CDA: max. 15000 ft2|
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|colspan="2"| Natural Slope (%) || < 15 || || < 15 || || || || ||
|colspan="2"| Natural Slope (%) || < 15 || || < 15 || || || || ||
| colspan="2"|Filter Mdia
| colspan="2"|Filter Mdia
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| | ||Stone Resvoir || || || || 1.5" to 3" stone dia., 2" pea gravel above 6" sand below || 1.5"-3.5" stone dia. For stone layer, 3" layer of washed river stone, or No. 8 or 89 stone above, 6-8 " of sand below || Stone 1.5"-3.5" || || Drain rock 3/4"-2.5 " washed open graded aggregate
!colspan="1" style="background:white; color:black"|
||Stone Resvoir || || || || 1.5" to 3" stone dia., 2" pea gravel above 6" sand below || 1.5"-3.5" stone dia. For stone layer, 3" layer of washed river stone, or No. 8 or 89 stone above, 6-8 " of sand below || Stone 1.5"-3.5" || || Drain rock 3/4"-2.5 " washed open graded aggregate
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| || Void space(%) || 30-40 || 30-40 || 30-40 || || || || ||
!colspan="1" style="background:white; color:black"|
|| Void space(%) || 30-40 || 30-40 || 30-40 || || || || ||
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| || Granular material (clear stone)(mm) || 50 || 50 || 50 || || || || ||
!colspan="1" style="background:white; color:black"|
|| Granular material (clear stone)(mm) || 50 || 50 || 50 || || || || ||
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| || Geotextile, around the stone reservoirwith an overlap at the top || min. 300 mm || 300 || min. 300 mm || || || || ||
!colspan="1" style="background:white; color:black"|
|| Geotextile around the stone reservoirwith an overlap at the top || min. 300 mm || 300 || min. 300 mm || || || || ||
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