A structural engineer assesses how loads are carried safely through a building or structure and, where necessary, designs the elements that provide strength and stability. Structural input is commonly needed when work changes the load path, introduces new loads or raises concerns about the condition of an existing structure.
Typical situations
- Removing or altering a load-bearing wall
- Creating larger openings for doors, windows or glazing
- Loft conversions, extensions and changes to roof structures
- New steel, timber, concrete or masonry structural elements
- Foundations, retaining walls and other ground-supported structures
- Cracking, movement, corrosion, impact damage or deterioration
- Installing heavy equipment or changing the use of a building
- Assessing whether an existing structure can carry additional load
Building Regulations and approvals
Building Control may request structural calculations and details where proposed work affects structural safety. Planning permission and Building Regulations approval are separate processes, so a project may require structural design even where planning permission is not needed.
Appointing an engineer early
Early input can identify constraints before drawings and construction plans become fixed. It can also help architects, builders and clients compare options on a realistic technical basis.
What to send with an enquiry
Useful information includes the site address, photographs, existing and proposed drawings, approximate dimensions, the intended outcome and any deadlines. It is acceptable to begin with incomplete information; the engineer can explain what else is needed.
This guide is general information and cannot account for the condition, geometry, loading or constraints of a particular project. A suitable scope should be agreed before relying on engineering conclusions.