Technical Booklet N Drainage·Page 24·3.10
Specialist advice for drains under foundations, pile-supported, or unstable ground
Where a drain passes under a foundation, is supported on piles, or where the ground is unstable, specialist advice should be sought on the protective measures needed.
Where a drain is to pass under a foundation, be supported on piles, or where the ground is unstable, specialist advice should be sought on the protective measures needed.
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