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AASHTO M 273-00 (2004) Standard Specification for Precast Reinforced Concrete Box Sections for Culverts, Storm Drains, and Sewers with Less Than 2 ft of Cover Subjected to Highway Loadings
standard by American Association of State and Highway Transportation Officials,
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AASHTO M 273-00 (2004) is identical to ASTM C850-95a except provisions specified in this document.This specification covers single-cell, precast reinforced concrete box sections with less than 2 ft of cover subjected to highway loadings and intended to be used for the construction of culverts and for the conveyance of storm water, industrial wastes, and sewage. A complete metric companion to M 273 has been developed--M 273M; therefore, no metric equivalents are presented in this specification. AASHTO M 259 is to be used for box sections subjected to highway loading with 2 ft or more earth cover, or subjected to dead load only.