- S11.5.14
- The width of trimback is dependent on the reinstatement materials used.
- S11.5.15
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Reinstatement materials that require compaction
If reinstatement materials are used that require compaction e.g. granular sub-base, HRA, etc., the width of trimback required will be the width of the frame base plus the width of the compaction tool sole plate plus 30 mm. - S11.5.16
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Reinstatement materials that do not require compaction
If reinstatement materials are used that do not require compaction e.g. concrete or PMMA, then a minimum width of trimback will be required to install the apparatus and ensure depth of penetration of the reinstatement material. For roads this will be a minimum of 50 mm in excess of the flange width. For footways, footpaths and cycle tracks the minimum width of trimback is the width of the frame.
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