Free consultation
We review your project and what structural information it needs — free of charge.
When a wall comes down or a steel goes in, someone has to prove it will stand up. That’s the structural calculation, and building control won’t pass your project without it. Xpanza’s engineers produce calculations, structural drawings and designs coordinated with your architectural set, so the steel on site matches the drawing.
Every structural alteration needs proof it works: a beam sized correctly, a wall removal that won’t move, a loft floor that can take the load. Our engineers produce the structural calculations building control requires, covering beams and steels, load-bearing wall removals, chimney breasts, loft and floor joists, and foundations.
Those calculations come with structural drawings and layouts that match the architectural set exactly. Our design team works with industry-standard software including AutoCAD, SketchUp and Revit, depending on what the project requires, so structural drawings line up cleanly with the architectural set.
And when building control raises a query on our calculations, we answer it. You send the project information; we send back a coordinated structural package your builder can work from.
Calculations for one structural opening, such as a knocked-through wall or a single RSJ.
Full structural package for rear, side or wraparound extensions, and loft conversion floors.
Complete structural design for new-build homes, HMOs and multi-unit conversions.
We review your project and what structural information it needs — free of charge.
Measurements gathered from you, a site visit, or existing drawings.
Structural calculations and drawings prepared and shared for review.
Final structural package handed over, ready for Building Control and your builder.
Straight answers to the questions we’re asked most about structural calculations, beams, wall removals and building control. If yours isn’t answered here, Contact Us.
It depends on what’s being altered. Any new steel beam, load-bearing wall removal, enlarged opening or changed floor or roof structure needs calculations. Tell us what’s being changed and we’ll confirm exactly what’s required before we quote.
It depends on the complexity. A single beam calculation is quicker than a full loft conversion design. Tell us your deadline and we’ll confirm honestly whether we can meet it. If your builder is waiting, ask about our express route.
Our calculations are prepared to meet building control requirements, and if they raise a query on our work, we respond to it. Since inspectors can no longer give design advice, getting the calculations right first time matters more than ever.
Yes. Send your measurements, sketches, photos or existing drawings via our simple checklist. If anything’s missing or unclear, we’ll tell you exactly what’s needed before we start.
Yes. Any load-bearing wall removal needs calculations to size the replacement beam and prove the load path down to the foundations. Building control will ask for them before they pass the work.
Calculations prove the structure works: the loads, the beam sizes, the padstones. Drawings show where everything goes on site. You usually need both, and we produce them as one coordinated package so they always agree.
Xpanza is based in Swansea and produces calculations and structural drawings for builders, contractors, developers and homeowners across the UK.
Send us your project details, what’s being altered, your measurements and your deadline, and we’ll come back with a fixed fee and an honest date. No holding up the builder.