Does the BCO have PI Insurance then to cover his "a few cals".If they require proof their guidance notes and a few calcs to determine loads may be all they need.
Does the BCO have PI Insurance then to cover his "a few cals".If they require proof their guidance notes and a few calcs to determine loads may be all they need.
Thanks & noted.OK, maybe it feels like people are ganging up on you, I've noticed that Ree has a bit of a habit of going off topic and getting personal. I try really hard not to do that, and simply try to state facts that give the posters on this forum the ability to make an informed decision. I'm sure you've got a lot of knowledge to offer this forum but acting like the world is out to get you isn't going to do you any favours.
Noted - But do you not agree that the Original Poster would not have the knowledge to carry this out for himself.To prove a structural element is fit for purpose you can do your own calcs (if you are capable of doing so).
But you would need to know the load you are supporting to identify the correct material and dimensions from the guidance notesThese notes are produced with the explicit intention of enabling builders or DIYers to complete small projects without the assistance of a structural engineer - similar to the Trada load / span tables. Some councils even produce guidance for steel beams for knock throughs.
Would they not need to know the imposed loads to establish if it was soundThey would know whether or not the installation is sound because they would either have the calcs checked, or refer to the guidance notes
Surely he would need to be competent, which generally requires a qualification.Many building inspectors even have degrees in which they learn some basic structural design.
How do we know if a simple doubled up joist is required if calculation have not been carried out.Yes, we could argue about PI insurance, and ideally yes, every design would be covered by PI insurance. However, for minor structural elements such as a simple doubled up joist to support some loft joists, building control, and many home owners, will be satisfied that the information contained in the guidance notes is robust enough to be satisfactory.
The truth is we don't know what the OP is capable of. He may well have sound mathematical knowledge but no idea about building. My wife (who has a degree in maths) would have no trouble calculating loads but would want a lot of reassurance about how to work out if it was possible to remove a wall.Noted - But do you not agree that the Original Poster would not have the knowledge to carry this out for himself.
These notes are produced with the explicit intention of enabling builders or DIYers to complete small projects without the assistance of a structural engineer - similar to the Trada load / span tables. Some councils even produce guidance for steel beams for knock throughs.
Yes, which is why I said earlier that there is nothing to stop him calculating the loads but if he is not confident in doing so then he should consult an engineer.But you would need to know the load you are supporting to identify the correct material and dimensions from the guidance notes.
They would know whether or not the installation is sound because they would either have the calcs checked, or refer to the guidance notes
For a loft floor the imposed load is always 0.25kN/m2. The BCO would know this and guidance notes would allow for the same.Would they not need to know the imposed loads to establish if it was sound
Many building inspectors even have degrees in which they learn some basic structural design.
No, the requirement for competence requires you to be competent, not to specifically have a qualification.Surely he would need to be competent, which generally requires a qualification.
Yes, we could argue about PI insurance, and ideally yes, every design would be covered by PI insurance. However, for minor structural elements such as a simple doubled up joist to support some loft joists, building control, and many home owners, will be satisfied that the information contained in the guidance notes is robust enough to be satisfactory.
I've said several times that the load to the wall would need to be determined. If, and only if, the OP is confident he can determine these loads, then he is perfectly within his rights to calculate said loads and use guidance notes to determine a section size.How do we know if a simple doubled up joist is required if calculation have not been carried out.
Do we know for example if the purlins are also being loaded on either of these walls?
You could do this - and yes, you would be able to support the new joists off a stud wall. However, despite the small loads, you would have to prove to BC that the bearing capacity under the new wall is sufficient. Probably OK if onto a ground bearing slab, if onto a timber floor some more calcs would be required.Then, as for the lapped joists, could the long ones be cut back to sit on the new wall and the now short ones be replaced to sit on the new wall?
This would make the new wall be load bearing, could it still be a stud wall?
You will get a bit more than 1.8m from ceiling joists - about 2.15m if 400mm crs and C16. This takes into account a long term load of 0.25kN/m2 and a short term point load of 0.9kN (around 90kg).Any more light on this?
Cheers
So are you suggesting a Structural Engineer is not required here and if so what advise would you have offered the Original Poster.Cat, Have you ever worked in the real world? This is how BCO's all over the country work?
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