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| | | | | |
| *[[Permeameter]] | | *[[Permeameter]] |
− | *Double ring infiltrometer | + | *[[Double ring infiltrometer]] |
− | *Cased borehole ([[percolation test]]) | + | *[[Percolation test]] |
| | | | | |
| *[[Grain size analysis]] (Hazen) | | *[[Grain size analysis]] (Hazen) |
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| *Soil textural classification | | *Soil textural classification |
| |} | | |} |
| + | |
| + | ==Becoming familiar with the different measurement practices== |
| + | STEP have produced a free online module to provide some basic information on infiltration test methods. Register [https://sustainabletechnologies.ca/events/design-infiltration-rate-e-learning-course/ '''HERE'''] |
| + | |
| ==Safety correction== | | ==Safety correction== |
| The measured or calculated infiltration rate must be divided by a value between 2 and 3 before use in design<ref>Design criteria for infiltration. (2018, February 14). Minnesota Stormwater Manual, . Retrieved 00:16, March 14, 2018 from https://stormwater.pca.state.mn.us/index.php?title=Design_criteria_for_infiltration&oldid=35583.</ref> | | The measured or calculated infiltration rate must be divided by a value between 2 and 3 before use in design<ref>Design criteria for infiltration. (2018, February 14). Minnesota Stormwater Manual, . Retrieved 00:16, March 14, 2018 from https://stormwater.pca.state.mn.us/index.php?title=Design_criteria_for_infiltration&oldid=35583.</ref> |
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| ==Planning for testing== | | ==Planning for testing== |
− | [[File:Test_pit.jpg|Infiltration testing should be carried out at relevant stages down through the profile of a test pit.]]
| + | |
| ===Background Evaluation=== | | ===Background Evaluation=== |
| Prior to performing testing and developing a detailed site plan, existing site conditions should be inventoried and mapped including, but not limited to: | | Prior to performing testing and developing a detailed site plan, existing site conditions should be inventoried and mapped including, but not limited to: |
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| | | |
| ===Sampling=== | | ===Sampling=== |
| + | [[File:Test_pit.jpg|thumb|Infiltration testing should be carried out at relevant stages down through the profile of a test pit.]] |
| The number of test pits or soil borings varies depending on site conditions and the proposed development plan. General guidelines are as follows: | | The number of test pits or soil borings varies depending on site conditions and the proposed development plan. General guidelines are as follows: |
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