To assess a structure (whether it is sufficiant or not), the following steps must be followed in sequence:

- Schematising the construction
- Determining the internal forces and moments (= global analysis)
**Checking the cross-sections (= design):****Strength****Stability****Stiffness**

The explanation below covers the design of timber.

## In Diamonds

- Calculate the internal forces (syn. global analysis)
`F9`or .

Check the option to take the creep into account. - Set the buckling lengths.

Don’t skip this step! Without the correct buckling lengths the stability results have no meaning. - Select the correct timber standard with
**Analysis > Timber standard**. - Click on
`F3`or to start the verification. - View the results with. For the results of the strength check click, for those of the stability check click.

The results of the strength and stability check are displayed as a percentage of the total capacity (= 100%) of the section.- A structure is sufficient for strength, if the percentage is less than 100% for all bars.
- A structure is sufficient for stability, if the percentage is less than 100% for all bars.

Based on the percentage no judgment can be made on the extent to which a section is sufficient or not. This is because the used formulas are not always linear.

- Don’t forget to verify the stiffness, thus the deformation.

A structure is sufficient if the strength, stability and stiffness are sufficient.