Nestable Corrugated Steel Culvert Can Meet the Request of Strength

The bearing strength of nestable corrugated steel culvert

We can understand why customers are worried about the strength of the nestable corrugated steel culvert, its thickness range is from 1.6mm to 3.5mm, it is so thin steel plate. How can it meet the bearing strength request of dead load and live load.

Firstly, let me introduce this steel structure, how it reach its strength. It is not plain steel plate, it is with corrugation. There is a saying that goes like this, the corrugation depth is as same as same thickness steel plate strength. We can not sure this saying, but all of us know, the corrugated steel plate has much bigger strength than plain steel plate. We have a test, if a people stand on a plain steel which is place on two bricks, the plain steel plate is easy to collapse, but after rolling corrugation on the steel plate, same people stand on it, it is will be not transformed.

Secondly, the nestable corrugated steel culvert is not only a steel structure, it will act with the soil, so we call it a soil-steel interact structure. So we have a strict request on construction. The corrugation size and thickness, we can not get it easily, it has to be calculated, then we can get the exact data.

Finally, after years experience, we get some calculation, if for road construction, the minimum filling height should be 300mm, if the diameter is 600mm, and thickness 1.6mm, it can meet filling height 34m, this if the diameter is 1500mm, then its minimum thickness is 3mm, it can only meet the filling height 26m. so before we confirm the design we have to get details of the construction conditions.

How to meet low filling height projection.

We talked about the filling height above, then when the filling height is very small, how we can consider the design of the nestable corrugated steel culvert. As we mentioned, the minimum filling back on the road projection, it is 300mm, when the filling height is small, it has to be bigger than 300mm. And the live load is an important value for our design. It will be the biggest factor that will affect on the corrugated steel culvert.

To sum up, the nestable corrugated steel culvert is designed based on calculation and construction condition analysis, we have theory and experience to support our design, so we do not need to worry about its strength.