EVS-EN 14844:2006+A2:2011

This European Standard deals with both large (structural) and small (non-structural or light structural) box
culverts of rectangular cross-section formed monolithically and designed as continuous elements with a joint
detail shaped to allow the possible incorporation of sealing materials. Box culverts can be used for creation of
voids below ground for conveyance and storage of materials. e.g. conveyance and storage of wastewater,
cable tunnels and subways
For the purposes of this European Standard, box culverts having internal cross-sectional dimensions (W
and H in Figure 1) less than or equal to 1 250 mm are considered as small (non-structural or light structural).
All other units are defined as large. The elements are generally manufactured in factories using either
normal weight or lightweight concrete and usually require reinforcing steel. This standard does not include
units manufactured from autoclaved aerated concrete, nor prefabricated reinforced box culverts of lightweight
concrete with open structure.
Each unit is structurally complete. They are used in combination to form a total structure of appropriate length
(including joints) and capacity.