If you want to open up a kitchen or join two rooms, ask an engineer to assess the wall before instructing the removal. A load bearing wall may carry a floor, another wall or part of the roof. Where the design uses a steel beam, the calculations show how the load will be carried after the opening is formed. The work normally falls under the Building Regulations in England.
What the Engineer Needs to Establish
The engineer starts by establishing what the wall supports and where those loads will go after the change. They need to understand the layout above and below, the position of the proposed opening and the construction around it. Floor and roof loads, other walls, and earlier alterations can all affect the answer. A wall’s thickness or a photograph of its surface cannot establish its structural role on its own.
The design considers the beam and what supports it at each end. Depending on the house, that could involve checking the existing masonry, providing a padstone that spreads the load into the supporting wall, or specifying a post and checking what carries it below. Two openings of similar width can therefore have different structural designs.
What to Give the Engineer Before the Work Is Priced
Send the latest plans if you have them and mark the opening you would like. Share accessible photographs of both sides of the wall and any known alterations. Mention features such as a chimney breast, a change in floor level or an existing opening nearby. The engineer can tell you what further measurements, site investigation or verification are needed. Leave any opening up for investigation to the project team.
Ask what the calculation pack and drawings will cover, and how the design will be shared with building control and the builder. Agree who is responsible for site checks and for planning temporary support during construction. The permanent beam design and the arrangements for safely supporting the building while the work takes place are separate tasks.
Example: A Wider Opening in an Altered Kitchen
A homeowner asks for an opening between the kitchen and dining room. An old plan shows a full wall, but the photographs show a smaller opening already in place. The engineer asks for the earlier alteration to be checked and considers what supports the floor above before deciding how the new opening can be formed. The builder can then price the specified work, including the support details, before setting the budget.
Ashbridge’s structural calculations service lists wall removal or a single steel beam from £295. The service covers design and calculations, with steel supply and installation priced separately by the contractor. If you have a proposed opening in mind, share the property layout and the work you want to do for a scope and fee.