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| See below
| See below
| See below
| See below
| 0.4 for clear stone aggregate; Higher effective porosity can be achieved by including void-forming structures
| 0.4 for clear stone aggregate below the perforated pipe; Higher effective porosity can be achieved by including void-forming structures
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Before you begin you will need to know the following;<br>
Before you begin you will need to know the following;<br>