Home › Universal Beams › 254 x 102 x 25

The middle weight in the narrow 254 range, with a usefully thicker flange than the 22.

254 x 102 x 25 dimensions and weight

Approximate total weight by length — this is what determines how the beam is offloaded on site.

What is a 254 x 102 x 25 used for?

The 254 x 102 x 25 sits between the 22 and the 28 in the narrow 254 series and is often the practical choice of the three. The flange thickens from 6.8mm to 8.4mm over the 22, which improves lateral stability appreciably for only 3 kg per metre more, and the overall depth increases slightly to 257mm. Like the rest of this series it is specified where an opening needs the reach of a 254mm section but the supporting walls or the cavity will not accept a 146mm flange. Typical uses are rear extension openings, wide internal structural openings in older properties, and beams built into masonry where the surrounding brickwork provides restraint. As with all the narrow 254 sections, check whether your calculations assume restraint along the compression flange, as this significantly affects whether the section passes.

Indicative span

Under typical UK domestic loading, published load tables place the 254 x 102 x 25 in the region of 4.2m to 4.8m. That assumes a simply supported beam with an evenly distributed load, an imposed load of around 1.5 kN/m² and a dead load of 0.5–0.8 kN/m².

Grades, lengths and finishes

The 254 x 102 x 25 is normally supplied to BS EN 10025-2 in S275JR or S355JR. S355 is the higher strength grade and is increasingly the default across the supply network; if your calculations specify one grade, tell us, because the two are not interchangeable. Mill certificates can be supplied with the order on request.

Beams are supplied cut to your lengths rather than as standard mill lengths, and we can arrange:

• Cutting to size — supplied ready to install, no cutting on site
• Drilling, notching and holes to your engineer’s details
• Welded cleats, end plates and connections
• Painting and priming, including intumescent coatings
• Galvanising for external or exposed applications

Delivery

A 6m length of 254 x 102 x 25 weighs approximately 150kg. That is beyond safe manual handling, so plan for mechanical offload and a clear route to the opening. We deliver direct to site across London, the South and the Midlands, with HIAB lorry crane offload available on request. If access is restricted — a terraced street, a rear garden, limited headroom — tell us at quote stage rather than on the day, and we’ll plan the delivery around it.

Other sizes in the range

Also searched as: 254x102x25, 254 x 102 x 25 UB, UB 254x102x25. The term “RSJ” is still widely used for universal beams, though strictly it refers to the older rolled steel joist section with tapered flanges.

• All universal beam sizes
• Universal columns (UC) — where the load is vertical rather than spanning
• RSJ beams
• PFC parallel flange channels

Common questions

Dimensional data shown is nominal and for guidance. Span figures are indicative and must not be used in place of structural calculations.