Difference between revisions of "Design infiltration rate as a function of soil texture for bioretention in Minnesota"
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<tr> | <tr> | ||
<th>Soil texture (USDA classification)</th> | <th>Soil texture (USDA classification)</th> | ||
| − | <th>Corresponding Unified Soil Classification</th> | + | <th>Corresponding Unified Soil Classification<sup>1</sup></th> |
<th>Corresponding hydrologic soil Group (HSG)</th> | <th>Corresponding hydrologic soil Group (HSG)</th> | ||
<th>Design Infiltration Rate (in/hr)</th> | <th>Design Infiltration Rate (in/hr)</th> | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
| − | <td>Gravel, sandy gravel | + | <td>Gravel, sandy gravel</td> |
| − | <td>'''GW''' – Well-graded gravel | + | <td>'''GW''' – Well-graded gravel, fine to coarse gravel |
| − | '''GP''' – Poorly graded gravel | + | '''GP''' – Poorly graded gravel |
</td> | </td> | ||
| + | <td>A</td> | ||
| + | <td>Although a value of 1.63 inches per hour (4.14 centimeters per hour) may be used, it is '''''Highly recommended''''' that you conduct field infiltration tests or amend soils.<sup>b</sup> See [[Guidance for amending soils with rapid or high infiltration rates]] and [https://stormwater.pca.state.mn.us/index.php?title=Determining_soil_infiltration_rates Determining soil infiltration rates].</td> | ||
| + | </tr> | ||
| + | <tr> | ||
| + | <td>Silty gravels, gravelly sands, sand</td> | ||
| + | <td>'''GM''' – Silty gravel | ||
| + | '''SW''' – Well-graded sand, fine to coarse sand </td> | ||
<td>A</td> | <td>A</td> | ||
<td>1.63</td> | <td>1.63</td> | ||
</tr> | </tr> | ||
| − | |||
<tr> | <tr> | ||
| − | <td>Sand, loamy sand, | + | <td>Sand, loamy sand, sandy loam</td> |
| − | <td> | + | <td>'''SP''' – Poorly graded sand |
| − | |||
| − | '''SP''' – Poorly graded sand | ||
</td> | </td> | ||
<td>A</td> | <td>A</td> | ||
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<tr> | <tr> | ||
<td>Silty sand</td> | <td>Silty sand</td> | ||
| − | <td>'''SM''' – Silty sand | + | <td>'''SM''' – Silty sand</td> |
<td>B</td> | <td>B</td> | ||
<td>0.45</td> | <td>0.45</td> | ||
| Line 36: | Line 40: | ||
<tr> | <tr> | ||
<td>Silt loam, loam</td> | <td>Silt loam, loam</td> | ||
| − | <td>''' | + | <td>'''MH''' – Elastic silt |
| − | |||
</td> | </td> | ||
<td>B</td> | <td>B</td> | ||
| Line 43: | Line 46: | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
| − | <td>Sandy clay loam</td> | + | <td>Sandy clay loam, silt</td> |
| − | <td>''' | + | <td>'''ML''' – Silt |
| − | |||
</td> | </td> | ||
<td>C</td> | <td>C</td> | ||
| Line 52: | Line 54: | ||
<tr> | <tr> | ||
<td>Clay, clay loam, silty clay loam, sandy clay, and silty clay</td> | <td>Clay, clay loam, silty clay loam, sandy clay, and silty clay</td> | ||
| − | <td>'''CL''' – Lean | + | <td>'''CL''' – Lean clay |
| − | '''CH''' – Fat | + | '''CH''' – Fat clay |
| − | '''OH''' – Organic clay or organic | + | '''OH''' – Organic clay, organic silt |
| − | ''' | + | '''OL''' – Organic silt or organic silt with sand or gravel or gravelly organic silt |
| + | '''GC''' – Clayey gravel | ||
| + | '''SC''' – Clayey sand | ||
</td> | </td> | ||
<td>D</td> | <td>D</td> | ||
<td>0.06</td> | <td>0.06</td> | ||
</tr> | </tr> | ||
| − | |||
| − | |||
</table> | </table> | ||
| + | <font size=1><sup>1</sup> For Unified Soil Classification, we show the basic text for each soil type. For more detailed descriptions, see the following links: [https://www.globalsecurity.org/military/library/policy/army/fm/5-472/apb.pdf The Unified Soil Classification System], [https://dot.ca.gov/-/media/dot-media/programs/maintenance/documents/office-of-concrete-pavement/pavement-foundations/uscs-a11y.pdf CALIFORNIA DEPARTMENT OF TRANSPORTATION (CALTRANS) UNIFIED SOIL CLASSIFICATION SYSTEM]</font size> | ||
<noinclude> | <noinclude> | ||
| − | [[ | + | [[Category:Level 3 - General information, reference, tables, images, and archives/Tables/Soil and soil properties]] |
| − | [[Category: | + | [[Category:Level 3 - General information, reference, tables, images, and archives/Tables/Hydrology and geology]] |
</noinclude> | </noinclude> | ||
Latest revision as of 02:20, 15 December 2022
Design infiltration rate as a function of soil texture for bioretention in Minnesota
The values shown in this table are for uncompacted soils. This table can be used as a guide to determine if a soil is compacted. For information on alleviating compacted soils, link here. If a soil is compacted, reduce the soil infiltration rate by one level (e.g. for a compacted B(SM) use the infiltration rate for a B(MH) soil). Link to this table
| Soil texture (USDA classification) | Corresponding Unified Soil Classification1 | Corresponding hydrologic soil Group (HSG) | Design Infiltration Rate (in/hr) |
|---|---|---|---|
| Gravel, sandy gravel | GW – Well-graded gravel, fine to coarse gravel
GP – Poorly graded gravel |
A | Although a value of 1.63 inches per hour (4.14 centimeters per hour) may be used, it is Highly recommended that you conduct field infiltration tests or amend soils.b See Guidance for amending soils with rapid or high infiltration rates and Determining soil infiltration rates. |
| Silty gravels, gravelly sands, sand | GM – Silty gravel SW – Well-graded sand, fine to coarse sand | A | 1.63 |
| Sand, loamy sand, sandy loam | SP – Poorly graded sand | A | 0.8 |
| Silty sand | SM – Silty sand | B | 0.45 |
| Silt loam, loam | MH – Elastic silt | B | 0.3 |
| Sandy clay loam, silt | ML – Silt | C | 0.2 |
| Clay, clay loam, silty clay loam, sandy clay, and silty clay | CL – Lean clay
CH – Fat clay OH – Organic clay, organic silt OL – Organic silt or organic silt with sand or gravel or gravelly organic silt GC – Clayey gravel SC – Clayey sand |
D | 0.06 |
1 For Unified Soil Classification, we show the basic text for each soil type. For more detailed descriptions, see the following links: The Unified Soil Classification System, CALIFORNIA DEPARTMENT OF TRANSPORTATION (CALTRANS) UNIFIED SOIL CLASSIFICATION SYSTEM
This page was last edited on 15 December 2022, at 02:20.