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Metal culverts with 7 different shapes and advantages

Flexible corrugated metal culverts were mostly used as water conduits. With their continuous development and their superior performances over conventional concrete culverts, metal culverts are widely used as small bridges, underpasses, grade separations, railway tunnels, storm water sewer and so on.

Culverts profiles
Metal culverts have a wide range of profiles, including circular or round as its basic shape, pipe-ache, ellipses (horizontal or vertical), aches (in low, medium and high profiles) and box culvert.

Vertical ellipse structural drawing
Vertical ellipse structure with three radiuses

Horizontal ellipse construction drawing
Horizontal ellipse containing three different radiuses

Pipe-arch structural drawing
Pipe-arch with the same radius

Arch culvert sketch construction
Round pipe with constant radius

Arch culvert sketch construction
Arch culverts in medium profile are composed of structural plates with three radii

Pipe-arch structural sketch
Pipe-arch in low-profile with three different radiuses

Box culvert structural sketch
Box culvert with two different radiuses and straight parts

Corrugated metal culverts advantages
When designing a bridge, there are many factors to be considered, for example, the delivery time, production time including design and construction, cost and maintenance as well as aesthetic appearance.

Short delivery time
Unlike concrete culvert, metal culverts spend less time to design and construction time. Corrugated metal pipe are finished at factory, while structural plates are assembled into final shape on job site. This determines the short delivery time.

Flexibility
Corrugated metal culvert can appropriately widened if the culvert is extended at the ends in contrast to rigid culverts.

Installation
Metal culverts, especially aluminum culverts, are very light and easy handling, which will significantly save time and money.

Durability
Steel and aluminum are the main materials of metal culverts. Aluminum culverts require no further treatment for the surface can create a protective film against abrasion and corrosion. Galvanized steel culvert can last 25 years, while polymer coating will give a 100 plus years of life span.

Maintenance
Metal culverts will not be affected by extremely weathers, corrosive media and abrasion. They will outlast concrete culverts and require less maintenance.

Reference material from: sefile://1107_Johan%20Hirvi%20Exjobb.pdf/


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