Loading calculators…
Enter your dimensions and get an estimated quantity for your job. Add a wastage allowance, then request a trade quote when you are ready.
Enter the opening width in millimetres to select a lintel length.
Browse the catalogue or send your list through for a trade quote.
Estimate the lintel or steel beam size for an opening. Enter the structural opening width, load and wall construction and the calculator suggests the lintel length or steel section you need to discuss with the trade counter.
1.8 m cavity-wall opening
Needs a 2.1 m standard cavity lintel with 150 mm bearings.
3 m back-door opening
Needs a lintel length of 3.3 m plus consideration of the load above.
4 m steel beam span
Needs a structural engineer’s calculation for the correct UB or RSJ size.
The calculator gives you a sensible starting quantity. For structural work, always confirm the specification and grade with your engineer or building control before ordering. We stock the standard trade lines and can source specialist grades or sizes with short lead times.
Working from drawings? Send us your dimensions, schedule or take-off and we will check the estimate, advise on the right product grade and wastage allowance, and book a delivery slot that matches your programme. We reply the same business day with a written trade quote.
Request a trade quote on the materials you have just calculated.