It is suitable for large waterways and provides low clearance. For the high stream banks round culverts are best suited. The primary purpose is to pass the water under roads. The pipe culvert ranges from 30 to 200 cm in diameter and is the cheapest among others. These are made of smooth steel, corrugated metal or concrete materials. It consists of one or more pipes placed side by side. The Pipe culvert is used for very small drainage works, passing through the embankment of road or railway. The types of culvert are (as illustrated in Fig. Some of the basic concepts and definitions that are commonly used in the hydraulic design and installation of culvert are discussed here.įig. However, a structure designed hydraulically as a culvert is treated in this Chapter, regardless of its span. However, on such a culvert in a farm, the earth cover is replaced by reinforced concrete slab with a required span and width, erected on piers, if movement of farm machinery is involved.Ī structure that is usually designed hydraulically to take advantage of submergence to increase hydraulic capacity.Ī structure used to convey surface runoff through embankments.Ī structure, as distinguished from bridges, that is usually covered with embankment and is composed of structural material around the entire perimeter, although some are supported on spread footings with the streambed serving as the bottom of the culvert.Ī structure that is about 6 meter or less in centerline span width between extreme ends of openings for multiple boxes. Very small culverts, as are required for movement of humans and cattle in a farm, may be made with a suitable diameter strong pipe laid at the bottom along the water flow direction. Long and wide culverts are known as bridges and they require rigorous construction methods. They vary from small drainage culverts on highways and driveways to large diameter structures. Concrete comes in many shapes and sizes, including round, elliptical, flat- bottomed, pear shaped, and box. Culverts are made of different materials like steel, polyvinyl chloride, concrete and wood, with a suitable combination of some of them. 27.1 and 27.2), a railway line, etc, simultaneously maintaining the movement on the road, the rail or other traffic. Sometimes, a culvert may be constructed to cross over a natural depression. Culvert is a structure constructed to link a pathway and is used to pass flowing water underneath and across a road (as illustrated in Fig.
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