Hi,
We've just had the first part of a large steel structure installed for our house extension. The key feature of this room/house is that internally there will be a two storey ceiling with one corner being a combination of bi-folding doors and fixed glazing above. The cool part is that there is no corner post to support the building, giving an illusion of a floating corner.
A picture paints a thousand words, so hopefully you can see this pic. You can see the cantilevered floating portion quite clearly.
The issue is that between the centre post (the bit the ladder is leaning against) and the edge of the floating corner (the bit the timber is rested against) the steel bends downwards by 40mm. The steel is installed straight however due to the 'plate welding and galvanisation process' it deviates at that end by this amount. Given that the distance from the post to the corner is 3250mm this effectively equates to a 1:81 gradient.
The steel company states that it is within their tolerances and it is not an issue, however the glazing company say that it goes beyond their tolerances for what can be 'packed' effectively.
Before having further awkward conversations and not having access to something like BS EN 1090-2 I thought I would ask you kind souls on here.
Acceptable tolerance or not?
My structural engineer has no concerns from a strength point of view and is therefore not commenting on what is acceptable or not.
Many thanks,
Doug
(P.S There will of course be eventual loading on this area so the deviation may even increase slightly.)
We've just had the first part of a large steel structure installed for our house extension. The key feature of this room/house is that internally there will be a two storey ceiling with one corner being a combination of bi-folding doors and fixed glazing above. The cool part is that there is no corner post to support the building, giving an illusion of a floating corner.
A picture paints a thousand words, so hopefully you can see this pic. You can see the cantilevered floating portion quite clearly.
The issue is that between the centre post (the bit the ladder is leaning against) and the edge of the floating corner (the bit the timber is rested against) the steel bends downwards by 40mm. The steel is installed straight however due to the 'plate welding and galvanisation process' it deviates at that end by this amount. Given that the distance from the post to the corner is 3250mm this effectively equates to a 1:81 gradient.
The steel company states that it is within their tolerances and it is not an issue, however the glazing company say that it goes beyond their tolerances for what can be 'packed' effectively.
Before having further awkward conversations and not having access to something like BS EN 1090-2 I thought I would ask you kind souls on here.
Acceptable tolerance or not?
My structural engineer has no concerns from a strength point of view and is therefore not commenting on what is acceptable or not.
Many thanks,
Doug
(P.S There will of course be eventual loading on this area so the deviation may even increase slightly.)