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Architectural services

How far should a steel beam overhang a padstone

Anonymous user 23/02/2024 - 3.53 PM

Hi. Firstly apologies if some terminology is incorrect, hopefully you get what I mean. We are having a double height rear extension built. One of the upstairs bedrooms has a set of French doors for a Juliette balcony. The aperture for this has been built, and above it sits a steel beam/lintel onto which sits another angled steel beam, which helps to form a flat roof. On the left hand side of the steel beam overhangs the aperture by 330mm, the other side by just 60mm. This feels a bit skinny to me and googling (dangerous I know) suggests a minimum overhang should be 100mm. I can also see that the concrete block that sits above the padstone is not level on that side, whereas it is on the other. Am I correct in thinking the overhang should be 100mm minimum? Cheers EDIT: Thanks for the two replies so far. I’ve spoken to the builder and he assures me that there is also a smaller steel lintel sitting underneath the beam which extends its bearing (thanks for the correction) across both sides of the aperture, which I guess helps with the old spreading? Does this sound correct? I would have though both beam and lintel would want to be similar in terms of the bearing?

Are you a tradesperson and able to answer this question?

5 Answers

Lee Davidson RIBA

Rating: 4.7 out of 5
Salisbury
Hi Sam, you must consult a structural Engineer. Best wishes Lee
Answered27 September 2023
2

CA&D Architects

Rating: 5 out of 5
Altrincham
150mm minimum.
Answered18 September 2023
1

Anonymous user

The overhang is usually called bearing and the minimum is 100mm
Answered18 September 2023
0

Made Innovate Constuction & Reform

Rating: 5 out of 5
Watford
Hi Sam, If your builder has incorporated additional steel support beneath the 60mm bearing, it may potentially improve the structural integrity. This modification would distribute the load across a less brittle material (steel lintel), which can then safely disperse the load over the wall. But it is difficult to give you an accurate response without more information.
Answered19 September 2023
0

Anonymous user

Consult a structural engineer. Typically it should be a minimum of 150mm.
Answered6 February 2024
0