Strut
![]() |
Contents |
[edit] Introduction
A strut is a structural component that has compression acting upon it - pushing it together. Struts are most frequently made from timber or metal.
[edit] Struts and ties
The counterpart of a strut is a tie, which is a structural element that has tension acting upon it - stretching it apart. For more information, see Ties.
Struts and ties are common components of structural elements such as trusses. The two components work together to support the weight of other parts of the structure and any imposed load. The struts provide resistance to compression and sometimes contribute to tension resistance. Ties perform the opposite function.
As a component of a moveable bridge, the strut can work in conjunction with other mechanisms to open and close the bridge.
This animated GIF depicts the opening and closing of the Henry Ford bridge - a double-leaf bascule bridge built in 1924. For each leaf, the operating strut (in purple) is drawn back using a pinion gear on the fixed structure. This brings the counterweight structure (in blue) down while raising the bridge truss (in red). A parallelogram link (green) means the rotation of the counterweight is synchronised with the rotation of the truss structure. |
[edit] Strutting and strut channels
Strutting is a method of providing temporary support to the side of a trench. It is sometimes called timbering and planking. Strutting can also be used between floor joists to increase the strength of flooring systems. In this instance, it may also be referred to as blocking.
Strut channels (also referred to as channel struts) are components that support cable management and plumbing systems. They are made from steel, aluminium or plastic and can be used to connect pipes, wire, threaded rods or bolts to walls.
[edit] Related articles on Designing Buildings
Featured articles and news
A five minute introduction.
50th Golden anniversary ECA Edmundson apprentice award
Showcasing the very best electrotechnical and engineering services for half a century.
Welsh government consults on HRBs and reg changes
Seeking feedback on a new regulatory regime and a broad range of issues.
CIOB Client Guide (2nd edition) March 2025
Free download covering statutory dutyholder roles under the Building Safety Act and much more.
AI and automation in 3D modelling and spatial design
Can almost half of design development tasks be automated?
Minister quizzed, as responsibility transfers to MHCLG and BSR publishes new building control guidance.
UK environmental regulations reform 2025
Amid wider new approaches to ensure regulators and regulation support growth.
The maintenance challenge of tenements.
BSRIA Statutory Compliance Inspection Checklist
BG80/2025 now significantly updated to include requirements related to important changes in legislation.
Shortlist for the 2025 Roofscape Design Awards
Talent and innovation showcase announcement from the trussed rafter industry.
OpenUSD possibilities: Look before you leap
Being ready for the OpenUSD solutions set to transform architecture and design.
Global Asbestos Awareness Week 2025
Highlighting the continuing threat to trades persons.
Retrofit of Buildings, a CIOB Technical Publication
Now available in Arabic and Chinese aswell as English.
The context, schemes, standards, roles and relevance of the Building Safety Act.
Retrofit 25 – What's Stopping Us?
Exhibition Opens at The Building Centre.
Types of work to existing buildings
A simple circular economy wiki breakdown with further links.
A threat to the creativity that makes London special.