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Line 1: − <ul><li>Material specifications should conform to [http://www.raqsb.mto.gov.on.ca/techpubs/OPS.nsf/0/2ccb9847eb6c56738525808200628de1/$FILE/OPSS%201860%20Apr12.pdf Ontario Provincial Standard Specification (OPSS) 1860 for Class II geotextile fabrics].</li>+ − <li>Fabrics should be woven monofilament or non-woven needle punched. Woven slit film and non-woven heat bonded fabrics should not be used as they are prone to clogging.</li>+ − </ul> Line 15:
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no edit summary
Material specifications should conform to [http://www.raqsb.mto.gov.on.ca/techpubs/OPS.nsf/0/2ccb9847eb6c56738525808200628de1/$FILE/OPSS%201860%20Apr12.pdf Ontario Provincial Standard Specification (OPSS) 1860 for Class II geotextile fabrics].
*Fabrics should be woven monofilament or non-woven needle punched. Woven slit film and non-woven heat bonded fabrics should not be used as they are prone to clogging.
<p>Primary considerations are:
<p>Primary considerations are:
<ol>
<ol>
<caption><strong>Recommended criteria for selection of geotextile fabric</strong></caption>
<caption><strong>Recommended criteria for selection of geotextile fabric</strong></caption>
<tr class="success"><th>Percent media passing 0.075 mm (#200 sieve)</th><th>Non-woven fabric apparent opening size (AOS, mm)</th><th>Woven fabric percent open area (POA, %)</th><th>Permittivity (sec<sup>-1</sup>)</th></tr>
<tr class="success"><th>Percent media passing 0.075 mm (#200 sieve)</th><th>Non-woven fabric apparent opening size (AOS, mm)</th><th>Woven fabric percent open area (POA, %)</th><th>Permittivity (sec<sup>-1</sup>)</th></tr>
<tr><td align="center" valign="middle">>85</td><td align="center" valign="middle" rowspan = 2>≤ 0.3</td><td align="center" valign="middle">Not recommended</td><td align="center" valign="middle" rowspan = 2>0.1</td></tr>
<tr><td align="center" valign="middle">>85</td><td align="center" valign="middle">≤ 0.3</td><td align="center" valign="middle">Not recommended</td><td align="center" valign="middle">0.1</td></tr>
<tr><td align="center" valign="middle">50 - 85</td><td align="center" valign="middle" rowspan = 3>≥ 4</td></tr>
<tr><td align="center" valign="middle">50 - 85</td><td align="center" valign="middle">≤ 0.3</td><td align="center" valign="middle">≥ 4</td><td align="center" valign="middle">0.1</td></tr>
<tr><td align="center" valign="middle">15 - 50</td><td align="center" valign="middle" rowspan = 3>≤ 0.6</td><td align="center" valign="middle">0.2</td></tr>
<tr><td align="center" valign="middle">15 - 50</td><td align="center" valign="middle">≤ 0.6</td><td align="center" valign="middle">≥ 4</td><td align="center" valign="middle">0.2</td></tr>
<tr><td align="center" valign="middle">5 - 15</td><td align="center" valign="middle" rowspan =2>0.5</td></tr>
<tr><td align="center" valign="middle">5 - 15</td><td align="center" valign="middle">≤ 0.6</td><td align="center" valign="middle">≥ 4</td><td align="center" valign="middle">0.5</td></tr>
<tr><td align="center" valign="middle">≤ 5</td><td align="center" valign="middle">≥ 10</td></tr>
<tr><td align="center" valign="middle">≤ 5</td><td align="center" valign="middle">≤ 0.6</td><td align="center" valign="middle">≥ 10</td><td align="center" valign="middle">0.5</td></tr>
</table>
</p>
[[category:materials]]
[[category:materials]]