CROSS Safety Alert
Installation of timber joist hangers
The use of joist hangers to support timber floor joists, particularly in new housing schemes, has increased in recent years. The revised Part L of the Building Regulations has also led to designers specifying joist hangers, rather than building timber joists into supporting walls.
Joist hanger failures have been found to occur as a result of several types of building defects as listed in the Alert.
Note: this Safety Alert was published by SCOSS (Standing Committee on Structural Safety). Since March 2021, SCOSS is integrated under the name Collaborative Reporting for Safer Structures (CROSS).
Who should read this?
Architects and designers, civil and structural engineers, builders, supervisors, site inspectors, and Building Control.
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