Box culverts are an ideal solution for drainage culverts with wide flow and low hydraulic head. Humes' precast concrete box culverts are also suitable for difficult site conditions as installation requires minimal excavation and backfill.
The basic box culvert is available as an inverted 'U' on a concrete base foundation (crown type), or as a 'U' shaped trough with a lid (invert type). Humes also manufacture uni-culverts which provide the base and lid as one unit. Link and base slabs are also available for both single and multi cell configurations. Our design team can also customise culvert designs to cast additional items, such as ferrules, into place to increase the efficiency of your project installation.
Humes manufacture a full range of box culvert and uni-culvert sizes (from 300mm to 4,200mm) and configurations to Australian Standards AS1597 (parts one and two). Box culverts are generally available in standard lengths of 1.22m and 2.44m (or 1.2m and 2.4m in QLD). In many cases Humes has the ability to manufacture larger spans and leg heights beyond those indicated in the Australian Standards. Humes also manufacture custom designs such as splayed box culverts, post-tensioning stressing etc.