- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 09 Apr 2018
The word 'flitch' refers to a plank of timber, cut lengthways from a tree trunk. It is related to the word 'flesh'.
Flitch beams consist of a steel plate sandwiched between two solid timber members and bolted together. Further alternating layers of timber and steel can be used as required to increase the strength of the beam.
The benefit of using flitch beams is that they are lighter and cheaper than using only steel, and allow fixing of the surrounding timber framework using nails or screws. As they are significantly stronger than timber beams they require less depth than a timber-only beam of the same strength.
In contemporary construction, the use of flitch beams has fallen into decline. This is largely due to the high cost of labour involved in their manufacture, and the introduction of high-strength engineered lumber and glulam beams. However, they can still be used to offer design versatility, and in renovation works where a structure needs to be altered or strengthened without increasing its depth or underlying construction.
 Find out more
 Related articles on Designing Buildings Wiki
Featured articles and news
BSRIA publication provides guidance about the capture and analysis of big data.
Gove launches a waste and resources strategy for England.
Only 9% of construction workers are 24 or younger.
Blighting local areas, preventing investment and and encouraging anti-social behaviour.
Sharing knowledge about the conservation of the built and historic environment.
CIOB launches a call to improve quality in the built environment.
Vastint gets permission for a 6.6 hectare site to support the expansion of Leeds’ city core.
One of the Isle of Man’s best 1960s buildings.
Using renewable energy in developing countries - QSAND and Loughborough University Research collaboration.
From frost damage to sulphate attack, common causes of defects in brickwork.
Precautions to take when making advance payments.