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− | + | <font size=3>'''Example check dam types spacing slope applications and longevity'''</font size><br> | |
− | + | Link to this [[Example check dam types spacing slope applications and longevity|table]] | |
− | Link to this [[Example check dam types spacing slope applications and longevity|table]] | ||
<table class="sortable"> | <table class="sortable"> | ||
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<th rowspan=2>Longevity</th> | <th rowspan=2>Longevity</th> | ||
</tr> | </tr> | ||
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<tr> | <tr> | ||
<th>Up to 2%</th> | <th>Up to 2%</th> | ||
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<th>10-15%</th> | <th>10-15%</th> | ||
</tr> | </tr> | ||
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<tr> | <tr> | ||
<td>Mixed size rock (2 ft height)</td> | <td>Mixed size rock (2 ft height)</td> | ||
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<td>> 2 years</td> | <td>> 2 years</td> | ||
</tr> | </tr> | ||
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<tr> | <tr> | ||
<td>Rock bags (16 inch height)</td> | <td>Rock bags (16 inch height)</td> | ||
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<td>Up to 1 year</td> | <td>Up to 1 year</td> | ||
</tr> | </tr> | ||
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<tr> | <tr> | ||
<td>Rock bags (10 inch height)</td> | <td>Rock bags (10 inch height)</td> | ||
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<td>Up to 1 year</td> | <td>Up to 1 year</td> | ||
</tr> | </tr> | ||
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<tr> | <tr> | ||
<td>Triangular sediment dike (10 inch height)</td> | <td>Triangular sediment dike (10 inch height)</td> | ||
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<td>1 to 2 years</td> | <td>1 to 2 years</td> | ||
</tr> | </tr> | ||
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<tr> | <tr> | ||
<td>Fiber log – wood / mulch (10 inch)</td> | <td>Fiber log – wood / mulch (10 inch)</td> | ||
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<td>1 to 2 years</td> | <td>1 to 2 years</td> | ||
</tr> | </tr> | ||
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<tr> | <tr> | ||
<td>Fiber log – straw (10 inch)</td> | <td>Fiber log – straw (10 inch)</td> | ||
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<td>Up to 6 months</td> | <td>Up to 6 months</td> | ||
</tr> | </tr> | ||
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</table> | </table> | ||
− | + | <font size=1><sup>1</sup> Note: reduce spacing intervals for highly erodible soils.</font size> | |
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− | <sup>1</sup> Note: reduce spacing intervals for highly erodible soils. | ||
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[[category:Table]] | [[category:Table]] |
Example check dam types spacing slope applications and longevity
Link to this table
Check Dam Type | Spacing for Various Ditch Slopes (feet)1 | Slope Applications | Longevity | |||
---|---|---|---|---|---|---|
Up to 2% | 3-5% | 6-9% | 10-15% | |||
Mixed size rock (2 ft height) | 100 | 67-40 | 33-22 | 20-13 | Up to 15% | > 2 years |
Rock bags (16 inch height) | 75 | 50-30 | 25-17 | 15-10 | Up to 15% | Up to 1 year |
Rock bags (10 inch height) | 42 | 28-17 | 14-9 | 8-6 | Up to 15% | Up to 1 year |
Triangular sediment dike (10 inch height) | 42 | 28-17 | 14-9 | 8-6 | Up to 15% | 1 to 2 years |
Fiber log – wood / mulch (10 inch) | 42 | 28-17 | 14-9 | 8-6 | Up to 15% | 1 to 2 years |
Fiber log – straw (10 inch) | 42 | 28-17 | 14-9 | NA | Up to 10% | Up to 6 months |
1 Note: reduce spacing intervals for highly erodible soils.