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Old 09-14-2009, 02:54 AM   #1
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Removing brick pole in garage

Hi I am removing a brick support wall from the front centre of my garage so that we can put a single garage door on instead of two seperate ones. As I haven't gotten into the roof as yet I am not sure what size the beam is, I was talking to a builder friend of mine and he said that if the beam is one piece and not joined above that brick pole and is a minimum of 120mm thick then we can take out the bricks without any further bracing. However I talked to another builder friend and he said that it would need to be 200mm. Once the pole is out the beam will be spanning over a 6m distance and the roof is tin, so there isn't alot of weight in it. What I was wondering is does anyone know what the minimum thickness the support beam needs to be to span that 6m distance?
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Old 09-14-2009, 07:46 AM   #2
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Roughly translated 120mm is 4 3/4 ins, 200mm 8 ins and 6 metres is 19ft 8ins.
Timber isn't my chosen subject, but 120mm for 6 metres seems a bit weedy. It also depends on the type and grade of timber, and also imposed loading such as snow.
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Old 09-14-2009, 08:02 AM   #3
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It would not be safe to make the assumption that the removal of the brick between the garage doors would leave the header structurally sound. In most circumstances, a new header of sufficient size to carry the imposed loads will need to be installed to span the entire opening.

You'll need engineering support to size that beam for you.
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