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→Backfill Granular and Pipes (JC)
===Backfill Granular and Pipes (JC)===
===Backfill Granular and Pipes (JC)===
'''Geotextile'''<br>
'''Geotextile'''
Geotextiles are filter fabrics that can be installed to separate dissimilar soils and prevent the migration of materials. As such, proper installation of geotextiles is important for ensuring the proper division of materials.
Geotextiles are filter fabrics that can be installed to separate dissimilar soils and prevent the migration of materials. As such, proper installation of geotextiles is important for ensuring the proper division of materials.
*Provide 500 mm of excess at the ends of each length of fabric
*Provide 500 mm of excess at the ends of each length of fabric
*Excess material should be folded on top of the infiltration medium/choker course once installed
*Excess material should be folded on top of the infiltration medium/choker course once installed
*Provide cuts for trees where appropriate<br>
*Provide cuts for trees where appropriate
Key Inspection Points:
Key Inspection Points:
*Check that sufficient overlap is provided between lengths of fabric
*Check that sufficient overlap is provided between lengths of fabric
*Confirm that geotextiles have been applied as per the manufacturer’s guidelines
*Confirm that geotextiles have been applied as per the manufacturer’s guidelines
*Confirm that structural considerations for geotextiles that are applied adjacent to infrastructure<br>
*Confirm that structural considerations for geotextiles that are applied adjacent to infrastructure
Mistakes to Avoid:
Mistakes to Avoid:
*Wrinkles in the fabric – follow the manufacturer’s procedure for installation to ensure geotextiles lie smooth on sub-grade
*Wrinkles in the fabric – follow the manufacturer’s procedure for installation to ensure geotextiles lie smooth on sub-grade
*Unnecessary application of geotextile – mixing of media is negligible where structural loads are not expected, so geotextile does not need to be applied. Also geotextiles should not be used where root growth is encouraged to penetrate different layers of media<br>
*Unnecessary application of geotextile – mixing of media is negligible where structural loads are not expected, so geotextile does not need to be applied. Also geotextiles should not be used where root growth is encouraged to penetrate different layers of media
For more information on geotextiles, see the page on geotextiles.
For more information on geotextiles, see the page on geotextiles.