ASTM C850 June 10, 2000
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
Additional Comments: W/D S/S BY ASTM C1433
Published By:ASTM International (ASTM)
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 Specification C 850 has been developed - 850M; therefore, no metric equivalents are presented in this specification.
NOTE 1 - This specification is primarily a manufacturing and purchasing specification. However, standard designs are included and the criteria used to develop these designs are given in Appendix X1. The successful performance of this product depends upon the proper selection of the box section, bedding, backfill, and that the installation conforms to the construction specifications. The owner of the precast reinforced concrete box sections specified herein is cautioned that he must correlate the loading conditions and the field requirements with the box section specified and provide inspection at the construction site.
NOTE 2 - Specification C 789 is to be used for box sections subjected to highway loading with 2 ft or more earth cover, or subjected to dead load only.