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Questions tagged [structural]

Questions about the structure of a building (i.e. moving, adding or repairing walls).

653 questions
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What should I do about these broken beams and broken floor joists?

My house was built in 65 and we bought it a few years ago. I've been slowly fixing things as I can, like the giant rats nest of electrical wiring strewn about the attic :). Now I want to get to these problems my inspector showed me under the house.…
Some Hardware Guy
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When sistering a joist or rafter, must the ends of the sister be supported?

When sistering a floor joist, must the sister be full length to the original joist and must the ends of the sister be supported on a sill or beam for the sister to be truly effective? Assume the sister is attached to the original joist with…
user116817
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1 answer

Front House Posts Not Resting on Anything

I have 5 roof support posts that are supposed to be resting on concrete blocks but one of them is not even touching the concrete block and the other 4 have some separation from the concrete block. See pics for details. Seems like the ground has…
Joe Dean
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Do these "rafter ties" tie anything together?

I've been wondering if I can open this ceiling up for a tall room. I've been reading that the ceiling joists are often also rafter ties so I went up there today to take a look. I can see a few are tied to the knee wall and have an angle brace, but a…
EricSLC
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Hanging heavy bag from I-joists

I have wooden I-beams in my basement ceiling that support the floor above (see attached picture), and I want to hang a 100 lb sandbag from these I-beams. As far as I can tell, the beams are made of some type of pressure-treated engineered wood. I…
StackMonkey
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Temporary supporting rafters in the middle for beam installation

I am intending to remove a load bearing wall that lies between the old perimeter of the house and the new extension. It is holding the extremities of the old roof rafters as well as a wall holding part of the extension. I would need to install a…
Rudi
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Can these be support columns with these brackets

Is there any way these columns with the top and bottom brackets can be supporting columns. If I can't tell by the brackets, I will need to break into their drywall at places to see if it or another beam is supporting. I want to remove…
Kevin S
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Will installing a beam under my shed's floor framing eliminate the bounce?

The previous owner of my property built a roughly 16x12 outbuilding on posts. Besides doing many things in slightly stupid ways, the building overall isn't awful. I've converted it into a manhut where I drink beers and butcher deers. The floor…
Dennis8483
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can I remove 1 collar tie

I'd like to create a small storage space in my attic. The beam in Red is low and just gets in the way. Can I remove one of the Red beams without causing structural problems? I am willing to put in supports on the sides like the white post I have…
beater
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What is the unit dead load of concrete?

I have a question about what the unit dead load is. For structural concrete, the unit weight is 145 pounds per cubic food. Is the Unit Dead load 145 pounds?
stackOverFlew
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Discovered a vertical hole drilled in what I assume is a structural support beam

Want to remove two small 'wing walls' that I know were not original construction (from the plans). Simple job I think, until I remove the drywall and reveal someone drilled a vertical hole to route electrics through what I assume is a structural…
Chris Wills
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Can I put holes in every floor joist?

I have a detached workshop (30'L x 25'W) with two levels. The second level is mainly (only?) for storage (floor is 3/4" plywood and can be seen in the picture). The floor joists of the second floor are 2x8's separated by 24" and are made of 3…
tnknepp
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12 x 16 two story Cottage lifting

How do I lift this with three beams? I would like to put in 8 inch round pilings at the end of the beams and lift it on top of those. What can I use as beams? What size? Steel or wood? What about flitch beams
Thomas Hellstrom
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Can you install a steel beam in timber posts?

I'm planning to remove a load bearing wall and place a 4500 beam. Steel is stronger than timber and I should be able to use a thinner steel beam than a timber beam. Does this make sense and how do I attach it to the timber posts and rafters?
Rudi
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Full Structural Survey for Listed, Managed Building

I'm in the process of buying a flat which is set in the grounds of an 18th century hospital which, as such, is a listed development (under British legislation). The flats are managed by a Management Company who look after the structural integrity…
TheRealJimShady
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