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When a suspended timber floor space increases over three metres, the joists tend to twist under loads which reduces load bearing capacity.
Strutting or Britting prevents this.
Types
- Solid strutting
- Herringbone strutting
Solid – In line and staggered
- Small lengths of joists are cut to tightly to fit in between other joists.
- Can be staggered or in line.
- Must be at least ¾ the depth of the joists.
- If it contracts and pulls away from the joists, they lose its support.
In line Staggered
Herringbone
- Two pieces 50mm square which are fixed diagonally between the joists.
- More expensive but if timber contracts it still supports the joist.
this is an excellent website it explains constuction studies so well and will help me so much in by studies.
@niall You’re very welcome. We hope to have more Construction Studies notes up soon.
Best of luck in the exams.
excellent notes and pictures, very clear and easy to learn from thanks
Thanks a million! This site is brilliant! It’s really helping me with my construction studies book! Is this a voluntary set up?!
Hi William,
You’re very welcome.
Klara
Hi Carl,
I’ve sent you an email about this.
Kind regards,
Klara