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I found your answer because I am looking for a similar

solution. I want to support...
I found your answer because I am looking for a similar solution. I want to support a single story cabin on a 45 degree slope and do not want a beam that I cannot lift without 2 people. If I am correct from your answer, I can use a steel 6x6 beam every 15 feet and this will handle the weight. Correct ? The cabin would be an octagon and 50' all the way across.
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3/9/2018
StructuralEng
StructuralEng, Consultant
Category: Structural Engineering
Satisfied Customers: 7,634
Experience: Structural Engineer
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Hello. I can help. Thank you for requesting me
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Customer reply replied 1 month ago
Actually what I typed doesn't make sense now because it doesn't have the other info in the answer you gave to someone else.I found your answer because I am looking for a similar solution. I want to support a single story cabin on a 45 degree slope and do not want a beam that I cannot lift without 2 people. If I am correct from your answer, I can use a steel 6x6 beam every 15 feet and this will handle the weight. Correct? The cabin would be an octagon and 50' all the way across.
Customer reply replied 1 month ago
Hello ?
Please don’t take answer for one specific condition and think it applies to all similar conditions. Each situation needs to be looked at on its own.
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Please provide a sketch of the cabin and why you need to shore it
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Customer reply replied 1 month ago
Did you get the files ?
There are no files attached
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Customer reply replied 1 month ago
I have tried 3 browsers, safari ( I use mac) , chrome, and firefox and I can get the files to upload so it says it has them, but it wont load to you. I have no idea what else to do ? Here is a link to what it would look like, but on a hill in Missouri. http://www.continentalkithomes.com/pedestal--piling-homes.html

It just came through.

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It will be up on stilts like that?

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Customer reply replied 1 month ago
at least part of it. I am just trying to figure out how big of I beams I would need to use to support it. I want to keep them short so I can lift with 2 people.

Understood. The size of the beams will depend a little on how the octagon lays out relative to the beams below. That is a big platform with an octagon on it.

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Customer reply replied 1 month ago
Each Octagon corner would have a vertical support and then there would be a middle support or supports depending on how long the horizontal beams could be. Each edge of the octagon is 20'. Does that make sense ?

So you would have a beam directly under each exterior wall of the octagon?

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Single story with a roof?

What is the city and state so I can look at snow loading?

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Customer reply replied 1 month ago
Just at the points
Customer reply replied 1 month ago
Single story with roof. Southern Nevada. no snow

Can you sketch out a plan of the octagon and where you picture the beams? Beams cover a line, not a point. So I want to be sure I'm on the same page as you with the layout.

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I know it's clear in your mind, but you have that picture. It's not conveyed as clearly with the words.

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Customer reply replied 1 month ago
Give me just a minute and I will draw it.

That's a 48'-3" long beam. I will assume two additional supports to make the beam have three 16' spans.

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Customer reply replied 1 month ago
if 2 people can move a 16' beam, but that sounds correct. You are right, picture is much easier. ;o)

I'm not sure two people can. The will still be heavy. W10x22 beams, will be 352 pounds each.

Let me try adding a fifth support to make four 12' spans

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Customer reply replied 1 month ago
Two of us can lift 350 lbs . no problem
Customer reply replied 1 month ago
what does a W10 x22 beam look like ?
Customer reply replied 1 month ago
I got it, 10" I beam !

Ok, great. It's 10" deep x 5.75" wide and weighs 22 pounds per linear foot.

Going down to a 12' span, makes it W8x18, which is 8" deep x 5.25" wide and weighs 18 pounds per foot. About 215 pounds per 12' section.

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Customer reply replied 1 month ago
That is awesome. I am guessing the same could be used for the verticals too ?

For gravity, yes, but the verticals become a lot more important because they keep it stable laterally. So you should really have a full lateral analysis done to size the columns and footings.

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I can offer that as a premium service, if you decide you need it at some point.

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Customer reply replied 1 month ago
How much would that cost ?
Customer reply replied 1 month ago
In your opinion, it is better to do with steel than wood ?

I'm not allowed to discuss cost in the chat. I can submit the offer for you to consider. If you accept it, I would need about 3 days to put everything together.

If you're going to use cantilevered columns as the lateral system, it is definitely better with steel.

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For the main frame. The house and infill framing can be wood.

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Customer reply replied 1 month ago
please submit the offer

I just submitted the offer. If you accept, I will have a few more questions and need about three days to get everything together. It will include sketches of the connections and footings.

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Customer reply replied 1 month ago
I better hold off until i am a little further along with this plan

No problem. The lateral analysis is something you want to do when you have the footprint nailed down and are confident it won't change.

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Customer reply replied 1 month ago
Thank you for the info, how do I get you paid

No problem. I'm happy to help. You can click on the button to rate my answer. Good luck with your project.

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