Only 3 entries – online calculator for the load-bearing capacity of construction profiles

Online-calculator for determining the deflection and bending stress of our Construction profiles.

Calculation of the load-bearing capacity of a structural profile

With our calculation form, we offer you the opportunity of determining with very simple outputs whether a construction profile can withstand the load or whether the design should be reinforced with intermediate struts. To do this, select the desired profile, enter the length of the profile in millimetres and also specify the load acting on the profile. The calculation takes into account all expected load cases – from distributed loads to point loads.

The traffic light colours green, orange and red indicate whether the structure is capable of supporting the weight or whether support from one or more intermediate struts is required. Green indicates a load of no more than 80% of the load limit based on the bending stress. If the load exceeds 80%, an intermediate strut is not yet absolutely necessary, but is advisable to be on the safe side in case the load unexpectedly turns out to be higher. This is indicated by the colour orange. If the background is red, however, the bending stress corresponds to the actual load limit or is even higher. In this case, reinforcement with intermediate struts is essential, as otherwise the construction profile will be permanently deformed.

If the structure is not loaded by additional weight, the input field can be left blank. In this case, only the deflection of the profile due to its own weight is calculated.

Your details

Our calculations

The deflection of the profile due to its own weight

The deflection of the profile due to additional weight load:

The deflection of the profile under the entire weight load:

The bending stress on the profile due to additional weight loads:

We hope that this short form for calculating the bending stress of our construction profiles will be helpful in the planning and execution of your designs. But please note: This calculation refers exclusively to our construction profiles, which have a yield strength of 292 MPa. Profiles from other manufacturers and distributors may have different values, meaning that the calculation will not be accurate. In this case, we recommend manually calculating the deflection or bending stress using the step-by-step guide provided in our blog article bending stress to determine whether permanent deformation occurs under load. We have explained both calculations step by step in separate blog articles. They can also be used for the deflection of wooden beams or plastic profiles, provided that the necessary parameters are known.

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Yours Sascha from S-Polytec