CONCRETE PIPE Featured Products TUREdBig Box Manholes PRodUCTs oduce box sections ments. Adjustable y to design to meet roviding precast The “Big Box” manhole form was purchased by Lafarge in 2010. It consists of a set of adjustable panels that can be configured to suit a number of different manhole sizes, including widths and spans of up to 4 meters. The height of these box sections can range from 0.5 to 2.5m. Lafarge “Big Box” sections are more commonly used for manhole applications due to production timelines involved with the wetcast manufacturing process versus the drycast method employed with standard box section sizes. The form does, however, provide an alternative for large scale road crossing or short lengths for stormwater conveyance. big box manholes. The “Big Box” manhole form is located in Calgary, AB. Please contact your Y CUlVERTs representative for information regarding production capabilities andlocal Lafarge lead times. In the highway culvert industry, the use of corrugated steel has become standard practice, but as highway infrastructure keeps up with rising traffic demands it is important to consider all drainage pipe options available. The “Big Through directBox” manhole form provides a precast alternative to cast-in-place to design practices, concrete pipe can be manufactured structures for all pipe sizes within Lafarge Pipe’s product offering (i.e. up to 3000 meet extreme project conditions and offers other sections (i.e. 3000 x 2400). As mm diameter), including our standard precast box benefits that address with our grading, corrosion, or precast box sections, pipe concerns with1-S manholes and standardlife cycle cost analysis.openings can be accommodated in the manhole walls to suit the needs of most projects. The wall thicknesses are also adjustable to 300 and 350 mm thicknesses, and the joints are Refer to page 8 for more information in Standard Installationlength. For water similar to those of a standard box section measuring 140 mm in Direct Design (SIDD). tightness at the joints, a sealing company would be recommended. inside ThE box Concrete box sections can be used in a variety of applications to meet the needs of your project beyond the conveyance of storm water, industrial waste and sanitary sewage. Innovative product solutions include: • Highway bridge culverts PAGE 52 LAFARGE PIPE eMANUAL