In easy language, it’s the area of a cross-section, and you get this cross-section by cutting through the 3D object. Let’s look at an example. In the picture below, a plane cuts throug… See more

As we already learned, the cross-sectional area is a 2D geometry. This means that the normal area formulas apply, utilizing the width, height, etc. OK, so for example, the cross-secti… See more

We have already written a Cheat sheet with the cross-sectional area formulas for many different shapes. Make sure to check that out, if you are looking for formulas. The following cr… See more

The unit of the cross-sectional area is mm2 [square milimeter] for most elements. However, if bigger elements such as bridge cross-section are designed, then m2might be used.… See more

In engineering, you sometimes come across complex cross-sections, like in the picture below. In a university course, I had to calculate the cross-sectional area and moment of … See more