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Home Repair - - If it ain't broken, don't fix it. Otherwise look here.
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Posted by Eigenvector on May 29, 2006, 1:54 pm
How much load can the rafters in your house support? Well maybe not your
PERSONAL rafters, but in general, if someone were to say, store their gold
bricks up there, or put a safe up there - something that isn't large but at
the same time is very heavy. I supose that it would depend on the age of
the house too, for the sake of argument let's say its a 1950's era house.
Would the rafters be able to support a 400 lb load if it were distributed
onto 2 rafter beams?
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Posted by Sacramento Dave on May 29, 2006, 2:00 pm
> How much load can the rafters in your house support? Well maybe not your
> PERSONAL rafters, but in general, if someone were to say, store their gold
> bricks up there, or put a safe up there - something that isn't large but
> at the same time is very heavy. I supose that it would depend on the age
> of the house too, for the sake of argument let's say its a 1950's era
> house.
>
> Would the rafters be able to support a 400 lb load if it were distributed
> onto 2 rafter beams?
Rafter length, Rafter Size, Rafter centers, Strong backs , There are so
many factors. Most likely designed to hold the roof load not your safe.
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Posted by Eigenvector on May 29, 2006, 2:46 pm
>
>> How much load can the rafters in your house support? Well maybe not your
>> PERSONAL rafters, but in general, if someone were to say, store their
>> gold bricks up there, or put a safe up there - something that isn't large
>> but at the same time is very heavy. I supose that it would depend on the
>> age of the house too, for the sake of argument let's say its a 1950's era
>> house.
>>
>> Would the rafters be able to support a 400 lb load if it were distributed
>> onto 2 rafter beams?
> Rafter length, Rafter Size, Rafter centers, Strong backs , There are so
> many factors. Most likely designed to hold the roof load not your safe.
Well I wasn't thinking of my safe so much as I was thinking of me and a few
friends - doing attic work. My fear was that a bunch of big guys would get
up there and hear that <CRACK> of splintering wood. Not to mention putting
our feet through the wallboard. I of course intend to lay down some plywood
for a walking surface, but first I wanted to make sure that it would even be
reasonable for a big guy to be up there.
I know the guy who inspected the house went up in there, but I just assume
ask before falling through the ceiling.
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Posted by RicodJour on May 29, 2006, 3:21 pm
Eigenvector wrote:
> How much load can the rafters in your house support? Well maybe not your
> PERSONAL rafters, but in general, if someone were to say, store their gold
> bricks up there, or put a safe up there - something that isn't large but at
> the same time is very heavy. I supose that it would depend on the age of
> the house too, for the sake of argument let's say its a 1950's era house.
>
> Would the rafters be able to support a 400 lb load if it were distributed
> onto 2 rafter beams?
I think there is some confusion with your use of the terminology. A
rafter is the angled structural member that supports the roof
sheathing. I don't know too many people that store anything at all on
their sloped roof.
If you're talking about the attic floor joists (aka floor below's
ceiling joists), then it's a regular joist situation and you can look
that up on any span table. You'll need to know the size of the joists
and the span. The Canadian Wood Council's web site has a design tool,
SpanCalc, that provides values for various species.
R
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