<p>Here Box Culverts are used for <strong>drainage purposes</strong>. They are also used to make tunnels and used for storage as well as material handling. Some culverts act as bridges. They easily accommodate both pedestrian and vehicular traffic Box culverts are <strong>in rectangular shape and generally constructed by concrete</strong> including box culvert size is 900mm x 600mm , ms grating details , 2 nos ,10mm upvc pipe as a primary outlet , 2 nos ,10mm upvc pipe as a primary overflow for more details download this file.</p>