Introduction
An RSJ beam is a structural steel beam used to support loads in buildings.
RSJ stands for Rolled Steel Joist, although modern structural beams are typically universal beams rather than traditional joists.
These beams are commonly used in residential projects where structural support is required.
When Are RSJ Beams Used?
RSJ beams are often required for:
- removing load-bearing walls
- creating open-plan spaces
- supporting floors above openings
- supporting roof structures
They allow structural loads to be transferred safely to supporting walls or columns.
Why Structural Calculations Are Needed
The correct beam size depends on several factors:
- span length
- loads from floors or roofs
- support conditions
- building materials
Structural calculations determine the correct beam specification to ensure the structure is safe.
RSJ Beams in Home Extensions
RSJ beams are commonly used in extension projects where a large opening is created between the existing house and the new extension.
For example:
- open-plan kitchen extensions
- rear extensions with sliding doors
- knock-through walls
Building Regulations Requirements
Structural alterations such as installing beams usually require Building Regulations approval.
Structural calculations are typically required as part of this process.
How BuildRegs Can Help
BuildRegs prepares structural calculations for RSJ beams and structural openings as part of Building Regulation drawing packages.
If you are planning to remove a load-bearing wall or create an open-plan layout, upload your plans and we will review your project.
