# Masonry Wall Subjected To Point Load [Step-By-Step Guide]

Masonry walls are commonly used in residential family houses. They resist vertical and horizontal loads from floors or external wind. And in some cases, masonry walls need to resist concentrated loads from beams.

In this guide, I’ll show, step-by-step, how you verify masonry walls that are subjected to point loads.

Let’s get started. ππ

## Process of Verifying Masonry Walls for Concentrated Loads

Before we dive into the nerdy calculations, it’s good to get an overview of the steps that need to be taken in the design. These are the steps, I always follow when I verify point loads on masonry walls in my job as a structural engineer. ππ

1. Calculate characteristic load that act on the wall/beam
3. Define geometry
4. Material properties of the wall
5. ULS verification of masonry wall subjected to concentrated load

There are many different types of masonry. In this tutorial, we’ll use autoclaved aerated concrete units, which are classified as Group 1 according to EN 1996-1-1 3.1.1 (4).

To be more specific, we’ll use the product ThermSuper wall element from Ytong.

The masonry wall supports a steel beam. This beam on the other hand is the support of another structure such as a roof or a floor which is exposed to loads such as snow, dead and live load.

These loads are taken up by the steel beam and transferred to the masonry wall and the other element that supports the beam. The masonry wall transfers then the loads further to the foundation. Finally, the loads are taken up by the soil.

In this tutorial, we won’t explain how loads travel through a building/structure. Instead, we’ll define some point loads that correspond to the reaction forces of the steel beam and the concentrated load that is exposed to the wall.

The following characteristic load values are assumptions.

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The characteristic values of loads depend on a lot of different factors like location, National Annex and geometry of the building and roof to name just a few. Loads therefore need to be calculated for every structure.

Luckily, we have already written an extensive article about what load combinations are and how we use them.

In case you need to brush up on it or want to check how we derived the safety factors, you can read the blog post here.

## 3. Geometry Of The Walls

Here are the dimensions and parameters of the wall:

## 4. Masonry Properties

We’ll use autoclaved aerated concrete as the masonry type. To be more specific, we’ll use the wall element Ytong ThermSuper. You can check out its properties here.

## 5. ULS Verification Of A Wall Subjected To A Concentrated Load

In this verification, we check that the compression stresses/forces due to the point load from the steel beam can be taken up by the masonry.

The resistance of the masonry is calculated according to EN 1996-1-1 (6.10):

$$N_{Rdc} = \beta \cdot A_b \cdot f_d$$

$\beta$ is an enhancement factor for concentrated loads and is calculated according to EN 1996-1-1 (6.11) with the following parameters:

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Note that this formula for $\beta$ is only used for masonry units in group 1. $\beta$ = 1.0 for groups 2, 3 and 4 according to EN 1996-1-1 6.1.3 (3).

Now, we can calculate the resistance and verify the wall for the point load NEd.

The wall subjected to a concentrated load is verified.

## Conclusion

Et voilΓ , the masonry wall is verified for a concentrated point load. π―π―

If you are new to structural design, then check out more of our design tutorials where you can learn how to design elements such as: ππ

But now, I would like to hear from you: Are you designing masonry walls for a new building? Or are you renovating your own house? Tell us a bit about the structure, as we all want to learn from each other. βοΈβοΈ