This document specifies a test method for assessing the initial (short-term) tangential ring stiffness of riser shafts for thermoplastics inspection chambers or manholes.
Status: PublishedPublication date: 2022-06
Edition: 2Number of pages: 9
Technical Committee: ISO/TC 138/SC 1 Plastics pipes and fittings for soil, waste and drainage (including land drainage)
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