RSJ Beams

Universal Steel Beam Appeal

RSJ steel beams are incredibly versatile and straightforward to install. Use them to support load-bearing walls when opening up internal space in a property. RSJs are often used at the apex of a vaulted roof, as a ridge steel to take the weight and force, of rafters and roof structures.

In an extension, when a wall is being opened up to enlarge a kitchen or other living area, it is usual to use RSJ girders to support the existing structure. For larger openings, it is sometimes specified that a goal-post arrangement is set up to transfer loadings to the foundations.

In most cases a padstone would be sufficient, however, UK Building Control will want to see evidence of calculations made by a structural engineer to demonstrate that the I-Beam fitted is adequate for the job.

Size Matters

A steel girder is usually lighter than a concrete lintel equivalent, which makes it a simpler thing to install. An I-beam’s main advantage is that it can be used to span huge openings and trimmed on-site to suit conditions.

For the widest openings the structural engineer may recommend that a fabricator weld in web stiffeners to prevent deflection or upgrade to a larger steel profile. It can often depend upon how much room there is between floor levels.

Going Large

The largest steel joists can span 6.6 metres, allowing for 200mm bearing at each end with a seven-metre steel beam. When planning for wide spans, always remember your logistics, i.e. will a longer steel fit through the existing access?

It may be sensible to split a beam into two sections and then bolt them together with plates once the steel is in position, ready to lift into place. Spending time with a tape measure before you order is always a good idea.

Money Matters

An RSJ is a builder’s favourite because it has always been a cost-effective answer to the problem of supporting load-bearing structures. Steel is incredibly strong, and very long-lasting if protected and installed properly.

Steel Beam Costs

The 152x89x16 Universal Beam starts at just £32/m including the VAT, perfect for opening up an internal doorway.

At the other end of the scale is the 254x146x37 Universal Beam, which is almost twice the size, but still starts at just £72.73/m, and is ideal for those heavy-duty operations.

At Wade, we can get your RSJ requirements delivered kerbside, UK-wide, to your job at a date and time to suit you. Talk to our team today to discuss.