Drawings and architectural features provide indications, but together with research determine the assessment.
Clues are not confirmation
The position of a wall, the bearing direction of a floor and upper building parts can indicate a load-bearing function. Merely knocking on a wall or measuring its thickness does not provide a reliable conclusion.
Look at the entire carrying route
The structural engineer assesses how the floor, roof and any overhead walls bear their weight. Also walls that mainly contribute to stability can be constructively relevant.
What can you prepare?
Collect drawings of multiple floors and photos of the visible connections. Before a breakthrough, determine what will be removed and how the remaining structure will be supported.
Why a drawing and a recording complement each other
Een archive drawing shows what was once designed or recorded. The current home may have been adapted later, sometimes without the file being fully updated. A recording helps collect visible clues and anomalies. Where important parts remain hidden, further investigation may be required. The assessment therefore concerns a combination of sources. A wall thickness, knocking sound or year of construction in itself is not a definitive confirmation.
Look above, below and next to the desired opening
The consequences of a breakthrough are not limited to the room you are standing in. A wall can receive forces from a floor, roof or upper wall. After removal, the forces may end up on smaller support points. This makes the existing substructure and connections relevant. Therefore, also collect drawings of other building layers and mention previous breakthroughs. Have us assess which coherence is important for your opening.
When will you discuss temporary support?
The final one beam is intended for the agreed end state. During the work, parts may temporarily be loaded or supported differently. Therefore, discuss during the assignment who will develop the construction phase and what information the executor needs. The necessary temporary measures cannot be reliably selected from a general photo or example. The existing situation and intended implementation must be known in detail.
Indication or substantiation?
| Information | What do you learn from it? | What remains open? |
|---|---|---|
| Wall thickness and knocking sound | A first impression of construction | The actual load-bearing function |
| Archive drawing | Fixed old situation | Subsequent changes and implementation |
| Recording | Visible existing condition | Hidden construction parts |
| Constructive assessment | Defined design question | Parts outside the order |
Your preparation in four steps
- Drawings of upper and lower floors
- Desired opening and dimensions
- Photos of accessible connections
- Previous changes to the home
Frequently asked questions on this topic
Can I tell from the thickness whether my wall is load-bearing?
Wall thickness is at most an indication. The load-bearing direction of floors, upper building components, previous renovations and the actual support must be considered together. Collect drawings from multiple floors and determine what additional information is needed. Do not start removal based on a knock test or a comparison with another home.
Is the foundation also examined for a load-bearing wall?
That depends on the agreed assignment and the consequences of the breakthrough. A beam can concentrate forces on smaller support points. The underlying construction and foundation may therefore be relevant. Ask explicitly which supports, columns and existing parts are included, so that it is clear where the assessment ends.
View the associated structural calculation, create your preparation list or take the guides and checklists along to the consultation.