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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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Loft Conversion, Steel Trimmer end bearing support
Hi
I am one day into have a loft conversion completed on a modern trust rafter house by a specialist loft conversion company. They ran into a few problems, which they are doing there best to sort out, but it lead to be to have a good look at he work completed so far. I have a couple of concerns about the steel trimmers they have put as the new supporting members across the width of the house. One of the steels (I beam) is 30cm high and 6 meters long. One end is supported on an internal load bearing wall and that looks fine, but the other end is supported on the external wall. The 'stack' goes like this: I beam 300mm high, 6 meters long, cut at 45 degrees (to fit under tiles); 30mm thick, 100mm wide, 400mm long steel plate; 60mm thick, 100mm wide, 400mm long new timber member (to raise height); existing wall plate (I assume as I can't see). The concern is that the overlap of the I beam onto the steel spreader plate is only 50mm. The architects drawing shows a square ended beam (ie not cut at 45 deg) sitting a full 100mm on to the steel plate. I also believe there should be a 25mm gap between the steel and the existing timber ceiling joists - is that right? If so I have less than 10mm - the builder said no, that is only between the new floor joists and old ceiling. Should I be worried? What is the building inspector going to say about A) the overlap and B) the use of timber in the 'stack' C) the lack of gap? Thanks in advance Kev |
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Loft Conversion, Steel Trimmer end bearing support
Kevin Walton wrote: Hi I am one day into have a loft conversion completed on a modern trust rafter house by a specialist loft conversion company. They ran into a few problems, which they are doing there best to sort out, but it lead to be to have a good look at he work completed so far. I have a couple of concerns about the steel trimmers they have put as the new supporting members across the width of the house. One of the steels (I beam) is 30cm high and 6 meters long. One end is supported on an internal load bearing wall and that looks fine, but the other end is supported on the external wall. The 'stack' goes like this: I beam 300mm high, 6 meters long, cut at 45 degrees (to fit under tiles); 30mm thick, 100mm wide, 400mm long steel plate; 60mm thick, 100mm wide, 400mm long new timber member (to raise height); existing wall plate (I assume as I can't see). The concern is that the overlap of the I beam onto the steel spreader plate is only 50mm. The architects drawing shows a square ended beam (ie not cut at 45 deg) sitting a full 100mm on to the steel plate. I also believe there should be a 25mm gap between the steel and the existing timber ceiling joists - is that right? If so I have less than 10mm - the builder said no, that is only between the new floor joists and old ceiling. Should I be worried? What is the building inspector going to say about A) the overlap and B) the use of timber in the 'stack' C) the lack of gap? Thanks in advance Kev I'd be worried. We've just finished a loft conversion and both the structural engineer and the building inpector were very fussy about the load bearing parts of the project. A 50mm overlap is certainly not enough. I'd phone the building inpector NOW and get him round as son as possible because if he says it's not good enough you are in a stronger position regarding the builder wgo has (presumably) agreed to do the work to the current regs. Out steels which were only 4m long had to rest on concrete pads. If my roof rested on a bit of wood I'd want to make sure it was oak and could never get wet even if the roof later leaked N |
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Loft Conversion, Steel Trimmer end bearing support
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Loft Conversion, Steel Trimmer end bearing support
"Kevin Walton" wrote in message
I am one day into have a loft conversion completed on a modern trust rafter house by a specialist loft conversion company. They ran into a few problems, which they are doing there best to sort out, but it lead to be to have a good look at he work completed so far. You used an architect but he seems to have faded out of the picture. Why was he not consulted before any of the building work was altered? Once you agree to the builing alterations without his approval he is free from recriminations and so are the builders. If you don't have it in writing you don't have it. The architects drawing shows ...... The last drawing he gave you shows you what you are supposed to have. Anying else and you are on your own with a legal hassle between you and the builders. Only my opinion of course. You may want to try this at UK.legal or whatever the group is called. -- Posted via Mailgate.ORG Server - http://www.Mailgate.ORG |
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Loft Conversion, Steel Trimmer end bearing support
"Michael Mcneil" wrote in message news:fba85868374ced7601c4418b059a2a0f.45219@mygate .mailgate.org... "Kevin Walton" wrote in message I am one day into have a loft conversion completed on a modern trust rafter house by a specialist loft conversion company. They ran into a few problems, which they are doing there best to sort out, but it lead to be to have a good look at he work completed so far. You used an architect but he seems to have faded out of the picture. Why was he not consulted before any of the building work was altered? especially about the non spec 45deg cut to accomodate the RSJ under the tiles how did the Architect imagine it would fit uncut ? |
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Loft Conversion, Steel Trimmer end bearing support
On Sat, 22 Nov 2003 00:22:28 -0000, a particular chimpanzee named
"Chris Oates" none randomly hit the keyboard and produced: how did the Architect imagine it would fit uncut ? I've seen plenty of plans for loft conversions. Some 'architects' have a habit of drawing plans to show that the conversion will comply, irrespective of whether or not it matches the house construction. -- Hugo Nebula "You know, I'd rather see this on TV, Tones it down" - Laurie Anderson |
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