Transcription of MANHOLE SIZING RECOMMENDATIONS - Precast …
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MANHOLE SIZING RECOMMENDATIONS - Precast …
MANHOLE SIZING RECOMMENDATIONSN ational Precast Concrete Association 1320 City Center Dr., Suite 200 Carmel, IN 46032 manholes are the most widely used maintenance utility structures that provide access to pipelines for inspection and cleanout. manholes are used for connecting two or more converging storm or sanitary sewers, permitting pipe size changes, accommodating abrupt changes in alignment or grade and allowing for direct surface flow interception. The largest impact on the size of these structures is the diameter and angle of entrance of the intersecting pipe. This document provides a guideline for SIZING round MANHOLE structures for various sizes and angles of incoming ConsiderationsTwo main design criteria in designing manholes , are that they must be large enough to accept the maximum pipe size, and the minimum structural leg width between pipe holes must be maintained.
MANHOLE SIZING RECOMMENDATIONS National Precast Concrete Association • 1320 City Center Dr., Suite 200 • Carmel, IN 46032 • precast.org Introduction
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