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Watermain 1.5m Alignment Tolerance for Cold Bends in PE

by Timothy Wood,

Unitywater specified watermain boundary offset is 1.5m with +/- 100mm horizontal tolerance. Can you please confirm if this 100mm tolerance also applies at property truncations where a PE main is used with cold radius bends for deflections. If too large a cold bend radius is used the alignment of the watermain can exceed the tolerance (i.e. cuts the corner locally at the truncation), but usually still falls well within the relevant Council service corridors (e.g. Sunshine Coast Council allow water/sewer between 1-3m from boundary as per RS-100). We would like to consider eliminating some smaller bend fittings (11.25° & 22.5°) with large radius cold bends that would reduce the number of butt weld's/flanged fittings required.

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