Regular work on Victorian terraces, townhouses and newer estates around Bristol.
RSJ Design • Bristol
RSJ Design Structural Engineer in Bristol
Fixed-fee RSJ design Bristol plus steel beam and structural calculations for wall removals, loft conversions and extensions across Bristol and the surrounding area. You receive a clear calculation pack your builder and Building Control can use straight away.
- Chartered structural engineers providing RSJ design in Bristol every week.
- Steel beam calculations and structural calculations laid out for Building Control checks.
- Practical beam sizes that fit typical Bristol homes and keep steel weight sensible.
Supporting projects across Bristol and nearby towns including Clifton, Redland, Bishopston, Bedminster, Brislington, Filton, Bradley Stoke and Keynsham.
For most domestic RSJ design jobs once drawings, photos and sizes are confirmed.
Every set of steel beam and structural calculations checked by a senior chartered engineer.
RSJ design Bristol, steel beam calculations and structural services
RSJ design, steel beam calculations and wider structural calculations for the kind of work Bristol homeowners and builders carry out most often.
Open plan RSJ beams
Steel beams when removing internal walls between kitchens, dining rooms and lounges in Bristol houses and flats.
- Single RSJ over a new opening
- Beams combining two rooms into one space
- Goalpost frames where openings are wide or loads are high
Steelwork for rear and side extensions
RSJs and supporting steelwork for single and two storey extensions, large sliders and corner glazing.
- Beams over bi-folds and sliding doors
- Steel supporting new masonry or timber roofs
- Padstone and bearing checks included as standard
Loft RSJs and cranked beams
Structural calculations for loft conversions and dormers in Bristol, including ridge beams and new floor beams.
- Cranked beams where headroom is limited
- Beams carrying new joists and stud walls
- Support checks on existing walls and foundations
Chimney breast removal steel
Steel beams and brackets when chimney breasts are removed on one or more floors and the stack remains above.
- Beams or gallows brackets under remaining masonry
- Load paths checked down to ground level
- Notes for a safe removal sequence on site
Steel posts and simple frames
When loads cannot sit on existing walls we design SHS posts, padstones and simple frames that fit your layout.
- Posts under beams and lintels
- Concrete padstone design for new supports
- Simple connection notes your fabricator can follow
Independent structural calculations
Structural calculations and short reports where steel is already in place or a buyer, lender or solicitor needs confirmation.
- Checks on existing beams and lintels
- Reports for solicitors, buyers or mortgage providers
- Help answering Building Control questions about past work
Four step RSJ design process for Bristol projects
From first message through to finished RSJ design, steel beam calculations and structural calculations.
Send photos, rough sizes and any architect drawings. A short call helps confirm the layout and loads.
You receive a clear fixed price and scope before we start any RSJ design or structural calculations.
An engineer designs the beams, checks loads and deflection and prepares the full calculation pack.
You receive drawings and notes ready for your builder and Building Control officer to work from.
What Bristol clients say
Feedback from homeowners and builders who used our RSJ design and structural calculations in Bristol.
We opened up the rear of our Victorian terrace in Bedminster. The RSJ design arrived quickly and the steel sizes fitted the plans with no issues on site. Building Control accepted the calculations first time.
Our builder wanted steel beam calculations before ordering RSJs for a wrap-around extension in Bishopston. The engineer was clear on what information was needed and the pack was easy to follow.
Loft conversion in a semi near Clifton. The cranked beams and ridge beam were all coordinated with the architect’s drawings, which meant the roof work went smoothly.
Frequently asked questions
Short answers on RSJ design, steel beam calculations and structural calculations for Bristol projects.
How fast can you provide RSJ design in Bristol?
Most wall removal and small RSJ design jobs are completed within 24 to 72 hours once we have drawings, photos and key measurements. Larger projects, such as full structural calculations for extensions or loft conversions, usually take five to seven working days.
Will the calculations be accepted by Building Control?
Yes. All steel beam and structural calculations follow current Eurocodes and are laid out in a way Building Control officers expect. If your inspector has any questions we respond directly with any clarifications they need.
What information do you need to start my Bristol project?
We need the address, a short description of the work, clear photos and basic sizes of the wall or opening. If you have architect plans or estate agent floor plans, send those too so we can base the RSJ design on accurate layouts.
Can you work from photos only or do you need a site visit?
Many domestic projects in Bristol can be handled from good photos, sketches and clear measurements. If the structure is complex or access is restricted, we may suggest a site visit or measured survey before finalising the structural calculations.
Send a few photos and a short description and we will reply with a fixed fee, likely beam options and expected turnaround time.
Request a RSJ design quote in Bristol
Use this form to outline your project. Your message goes straight to an engineer, not a call centre.
Tell us about your structural work
Share a few details so we can confirm the right RSJ design, steel beam calculations and structural calculations for your project.
This form connects to our central SECalcs email. You will normally receive a reply from a structural engineer within one working day.

- Head Office: Corwell Lane, Uxbridge, England, UB8 3DE.
- 07359 267907
- info@structuralengineercalcs.com
- Company No: 12653163
