AASHTO M 199M/M 199-17
- Standard Specification for Precast Reinforced Concrete Manhole Sections (ASTM Designation C 478M-15a and C 478-15a)
- standard by American Association of State and Highway Transporta
- Category: AASHTO
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This specification agrees with ASTM C 478M-15a and C 478-15a except that the absorption test is limited to the 5-h boil method, and the method of retest in case of failure of absorption specimens as well as the test for compressive strength determination differ.
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