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Structural engineers in Southampton

Structural calculations, drawings and surveys for homes, developments and commercial buildings across Southampton, delivered remotely nationwide with site visits arranged across the city and Hampshire.

Structural engineering across Southampton

Southampton's building stock reflects a port city rebuilt in parts after wartime damage. Victorian and Edwardian terraces fill Portswood, St Denys and Freemantle, interwar and post-war housing spreads across Bitterne, Shirley and Millbrook, and substantial waterfront and city-centre regeneration has added modern apartment and mixed-use development around the docks and Ocean Village. The two universities and the port also drive a steady flow of conversions, houses in multiple occupation and commercial alteration.

We provide the full structural service for the city: Eurocode calculations and drawings for extensions, loft conversions, wall removals and new openings, structural surveys and inspection reports, and design for new build, conversion and commercial work. Desktop calculations and reports are delivered anywhere in Southampton quickly, and site inspections are arranged across the city and the surrounding Hampshire area.

Ground conditions and foundations in Southampton

Southampton lies on the Hampshire Basin between the Test and Itchen estuaries, and its ground is dominated by the Palaeogene deposits of the area, including the Bracklesham and Barton beds with their clays, silts and sands, capped in places by river terrace gravels. These grounds vary from firm sands and gravels giving reasonable bearing to soft, compressible clays and silts, while the estuary margins and reclaimed dockland carry soft alluvium and made ground that can settle under load and is why parts of the waterfront need engineered foundations.

We match the foundation design to the ground rather than assuming a standard depth, using strip or trench fill on firm sands and gravels, wider or raft foundations where softer clays and silts are present, and deeper or piled solutions on soft alluvium and made ground near the estuaries and docks. Where an extension ties into existing foundations we check bearing and settlement so old and new work move together, and on the reclaimed and low-lying ground near the water we take account of the variable depth to firm strata across a plot.

How we work with Southampton clients

Most structural design is produced from drawings, a measured survey and photographs, so a service-area practice rarely holds up a Southampton project. We turn domestic calculations around promptly and coordinate with your architect, builder and Building Control so the structure and the drawings agree before work is priced on site.

Where a site visit is needed, for a structural survey, a movement or settlement assessment, or an inspection of existing structure or a conversion, we arrange it across Southampton and Hampshire. Conversions and houses in multiple occupation often mean new openings, floor strengthening and fire and load changes at once, and we set out the structural design so it works alongside the other requirements rather than cutting across them. Every output is tied to the Eurocodes and Approved Document A and backed by professional indemnity cover, and we support clients across the UK on the same basis.

Southampton

Local considerations.

What tends to govern a structural job in this area.

Victorian terraces, post-war housing and modern waterfront development
Hampshire Basin clays, silts, sands and capping terrace gravels
Soft alluvium and made ground on reclaimed dockland and estuary margins
Conversions and houses in multiple occupation around the universities and port

Services

The full structural remit in Southampton.

Every service is available here. Choose one to read more, or tell us your project and location.

Selected work

Real structures, surveyed and engineered.

All work →

Sport and recreationCharlton Athletic FC, The ValleyTwo steel monopitch stand roofs rising to 27 metres were assessed for a proposed solar PV installation. Both were cleared to carry the arrays as they stand, and the fragile roofs were surveyed entirely by drone with nobody working at height.

Read →

Manufacturing and industrialWienerberger, Tamworth

EducationCarlisle College

Film and mediaDragon Studios, Pencoed

Questions

Common questions

Do you cover the whole of Southampton?

Yes. We provide structural calculations, surveys and design across Southampton and Hampshire, from Portswood and Freemantle to Bitterne, Shirley and the surrounding towns. Desktop work is delivered remotely and site visits are arranged across the area.

Do you need to visit my Southampton property?

Not always. Calculations for extensions, lofts and wall removals are usually produced from drawings and photographs. A visit is arranged where a survey, settlement assessment or inspection of existing structure is required.

Can you provide calculations for Building Control in Southampton?

Yes. We prepare Eurocode structural calculations and drawings ready for Southampton City Council Building Control or an approved inspector, written to demonstrate compliance with Approved Document A.

Does made ground near the docks affect foundations?

It can. Reclaimed dockland and estuary margins often carry soft alluvium and made ground that settle under load, so we design foundations to suit the ground and may recommend deeper, raft or piled solutions where soft deposits are present.

Elsewhere in the UK