Design and Specification
Standard E-RETE Reinforced Concrete Box Culverts are designed to the Malaysian Standard Specification: MS 1293: PART 1:1992 (Specification for Precast Concrete Box Culverts not exceeding 1800 mm width and 1800 mm depth with a maximum backfill depth of 2m inclusive pavement, if any) and are tested to withstand a proof load of 112.5kN and ultimate load of 140kN applied over and area of 320mm x 320mm at any position on the cover/lid slab.
E-RETE large box culverts are designed to BS 8110: 1985 to cater full MOT Type HB loading.
E-RETE Box Culverts are designed as a precast unit for culvert works and may be used in the construction of
E-RETE Box Culverts are designed to take a more severe loading than the standard culvert pipe. They are able to withstand direct traffic loading and so may be placed at pavement level or immediately under the road surfacing. As such E-RETE would recommend the use of Box Culverts in areas where the depth of fill over the crown is less than 600 mm in place of culvert pipes as the latter may have to be encased in concrete in order to obtain the required strength. Concrete encasement is a very expensive installation and it is usually not recommended.
Standard and large E-RETE Box Culverts incorporated with a dry-weather flow section would be very ideal for culvert works in areas where the normal flow is relatively small.