Thermoplastics piping systems for non-pressure underground drainage and sewerage. Thermoplastics shafts or risers for inspection chambers and manholes. Determination of ring stiffness
Current, Under Review
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Published:
1 Scope
This International Standard specifies a test method for assessing the initial (short-term)
tangential ring stiffness of riser shafts for thermoplastics inspection chambers or manholes.