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Material specifications should conform to [http://www.raqsb.mto.gov.on.ca/techpubs/OPS.nsf/0/2ccb9847eb6c56738525808200628de1/$FILE/OPSS%201860%20Apr12.pdf Ontario Provincial Standard Specification (OPSS) 1860 for Class II geotextile fabrics].
Material specifications should conform to [http://www.raqsb.mto.gov.on.ca/techpubs/OPS.nsf/0/2ccb9847eb6c56738525808200628de1/$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.
*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>
<li>Suitable apparent opening size (AOS) for non-woven fabrics, or percent open area (POA) for woven fabrics, to maintain water flow even with sediment and microbial film build-up;</li>
<li>Suitable apparent opening size (AOS) for non-woven fabrics, or percent open area (POA) for woven fabrics, to maintain water flow even with sediment and microbial film build-up;</li>
</ol>
</ol>
<br>
<table class = "table-responsive">
<table class = "table-responsive">
<table class="table table-striped">
<table class="table table-striped">
<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>
<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>
</table>
[[category:materials]]
[[category:materials]]