A builder emails on a Tuesday. He is taking out a wall on Thursday and needs calculations. That is the entire message, with a photograph of a wall taken from too close to show anything useful.
The engineer now needs four replies to establish the span, what is above, whether the wall is loadbearing and what the floors are made of.
Step 1: publish exactly what you need
Span or opening width, what the wall supports, the construction above, floor construction, roof type, storeys, property age and a dimensioned sketch. A published list is what turns a one-line email into a usable enquiry.
Step 2: ask for a sketch with dimensions
Not a photograph alone. A rough hand sketch with measurements tells an engineer more than a dozen pictures, and builders will produce one if asked.
Step 3: ask what is above the opening
Another floor, a roof, a chimney breast, a bathroom. This determines the loads and it is the thing most commonly omitted.
Step 4: establish the construction
Solid masonry, cavity, timber frame, joist direction and spans. Builders usually know and rarely volunteer it.
Step 5: ask about the deadline
Work often starts before calculations arrive, which is both a risk and a reality. Knowing the date lets you say honestly whether it is achievable.
Step 6: publish your turnaround and fee
Standard and expedited, with prices. Builders shop on this and the practice that publishes gets the enquiry.
Step 7: say when a visit is required
Where loads cannot be established from information supplied, where the existing structure is uncertain or where there is evidence of movement. Explaining the trigger prevents the assumption that a visit is a sales tactic.
Step 8: explain what the client receives
Calculations, a drawing, specification of the steel or timber, bearing requirements and what building control needs. Builders want to know the package is complete.
Step 9: never advise a homeowner on safety
Whether a wall can be removed, whether a crack matters and whether a structure is safe are matters requiring assessment, which is exactly the boundary in homeowner structural questions an engineer must not answer online.
Step 10: route anything suggesting movement
Cracking, deflection, a sagging floor or anything a person is worried about needs a proper assessment and should reach an engineer immediately.
Step 10b: say what happens if the wall is not what anyone expected
Openings get formed and reveal a lintel nobody knew about, a joist running the wrong way or a wall carrying more than the drawings suggested. Explaining how a revision is handled, how quickly you can reissue and what it costs means a builder with a wall open on a Thursday calls you rather than improvising something on site.
Step 11: builders and homeowners enquire differently
A builder wants calculations, a homeowner wants to know whether an idea is possible. Separating the routes serves both, which is the pattern in project enquiries for engineering consultancies.
Step 12: enquiries arrive in the evening
Builders send these after a site day, as described in evening enquiries from homeowners planning weekend jobs and AI chatbots for home contractors and builders.
Getting started
Publish what you need, your turnaround and fees, then capture sketches and dimensions at any hour. Setting up takes minutes with install the widget and train your bot. SpideyChat for B2B firms answers from your published pages and never comments on structural safety.