On 22 February 1909, the Institution was incorporated under the Companies Acts 1862-1907 as a company limited by guarantee not having a capital divided into shares. It was renamed the Institution of Structural Engineers in 1922, when its areas of interest were extended to cover 'structures' of all kinds.
On February 22, 1909, the Institution was established under the Companies Acts 1862-1907 as a company limited by guarantee without shares. It changed its name to the Institution of Structural Engineers in 1922 when it expanded its focus to include all types of structures.