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Installing Precast Concrete Box Culvert

This section includes a suggested procedure for the proper installation of precast concrete box culvert. It is simply an information resource and is not intended to supersede project specifications with respect to procedures.

Federal regulations covering construction safety are published in the Safety and Health Regulations for Construction under the Department of Labor, Occupational Safety and Health Administration (OSHA). The precast concrete box culvert installer should be familiar and compliant with the pertinent sections and regulations of this document. The installer should also review installation practices with the engineer’s design assumptions, particularly in relation to the use of trench boxes, foundation preparation, joint gap allowances, and compaction requirements of the backfill.

Lay Direction
How is box culvert normally installed? Starting downstream working your way up stream with the spigot end toward the down stream and the bell end toward the up stream side. See the illustration below.
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Installing precast concrete box culvert
Notice the small gap between box culverts. This varies between engineering firms and job requirements. Photo courtesy of Barger Precast.
Precast concrete box culvert base
A better look at the prepared base of flat stone. Photo courtesy of Barger Precast.

Mechanical Connection System