Hi,
I wonder if anyone can help. I had a single storey rear extension built last year, but the builder vanished before we'd got everything signed off by buildings control. The final thing i need to get the extension signed off is confirmation that the lintel used over the rear bi-fold doors is adequate. The problem is I don't know exactly what has been used. I was previously told it was a universal beam, but I'm fairly sure it's not. I'm pretty sure it's 2 L beams back to back, one supporting the facing bricks and one supporting the block work. What I know is that it's 8mm thick steel, and the width at the bottom of each beam is approx 135mm.
I can't find that as a standard size, unless it's in fact a 135 x 65 x 8 RSA, but laid the wrong way up with the longer edge on the bottom. Does anyone know if this is a valid way of using the beam, or could suggest what else it might be? The lintel is approx 3950mm long spanning a 3600 door, and is supporting a small triangle of bricks up to the ridge of the pitched roof, if that makes sense. Will this be acceptable to buildings control?
Thanks for the help,
Matt
I wonder if anyone can help. I had a single storey rear extension built last year, but the builder vanished before we'd got everything signed off by buildings control. The final thing i need to get the extension signed off is confirmation that the lintel used over the rear bi-fold doors is adequate. The problem is I don't know exactly what has been used. I was previously told it was a universal beam, but I'm fairly sure it's not. I'm pretty sure it's 2 L beams back to back, one supporting the facing bricks and one supporting the block work. What I know is that it's 8mm thick steel, and the width at the bottom of each beam is approx 135mm.
I can't find that as a standard size, unless it's in fact a 135 x 65 x 8 RSA, but laid the wrong way up with the longer edge on the bottom. Does anyone know if this is a valid way of using the beam, or could suggest what else it might be? The lintel is approx 3950mm long spanning a 3600 door, and is supporting a small triangle of bricks up to the ridge of the pitched roof, if that makes sense. Will this be acceptable to buildings control?
Thanks for the help,
Matt