Questions tagged [engineering]

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How do I design an ice house?

Where can I find how to design a cold room storage building? I have a 12x12 shed that I use as cold storage for tree seedlings for about a month each spring. The present construction is 2x4 walls ...
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109 views

North Carolina Code question for splicing 6x6 posts

I have a 48 X 10 second floor deck with 6X6 posts. I want to add a roof above about half of it. It is not feasible to replace the 6X6's with longer ones as I would basically end up replacing the ...
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53 views

Calculating Tie Plate loading and double shear

I am considering the use of L strap ties from Strong Tie. I will be connecting two 4x4's in an L-configuration. The image at the very bottom-right corner of the below PDF illustrates exactly the ...
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575 views

How do I hang a 500lb bed swing?

Could someone please tell me what kind of support is needed to hang a 500 pound porch bed swing? The 500 pounds also includes the weight of people on the swing.
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Sizing wide flange I-Beam for 20" span

I am doing a barn renovation project (pacific NW, 98922), and need to take out a large load bearing wall and replace it with a beam. Was going to use an LVL (which I sized at about 5.5 x 18") ...
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27 views

Concrete table legs

the wife wants me to build a concrete table that is 10' long by 2.5' wide and 3" thick with and overall height of 30". She would like 6"x6" tubing for legs, so I was wondering how thick tubing I will ...
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24 views

Does the 2/3rds rule for cantilevers still apply if the cantilever is at an angle?

There is a rule that a cantilever should be 1/3 the span of the supported beam. My assumption is that this rule is intended for rafters close to horizontal. Theoretically, the steeper the angle, the ...
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2answers
510 views

Replacing ceiling joists with rafter ties higher up on the rafters

I'm trying to help my grandfather plan for a remodel of his 1950s home. The original structure is 24x24' with 6" rafters spaced about 20" apart on a 6/12 roof. He'd like to be able to have a "vaulted ...
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120 views

Frame a jack stud without bottom plate?

I need to frame a small header in my kitchen exterior wall for a range hood exhaust because the 8" hole is dead center on a stud (of course). It's a 2 story 1941 house with 2x4s 16 on center. The ...
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175 views

How to frame corner of staircase header for a stairwell opening? Do you use a hanger here?

I'm designing a staircase and was a little curious on how to frame out the stairwell opening where the header meats the existing joists. There will be a double 1.75"(x2) LVL header joined up against ...
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529 views

How to cantilever a roof beyond the end wall?

How can this roof be extended 16 inches beyond the end wall? Seems like it requires some 8 foot 2x4's but I'm unsure how to brace them to the truss. My way of thinking would put them above 4 inner ...
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420 views

Mid span weight capacity

What is the mid-span (center of wood board) load bearing capacity of one 2”x12”x10’ setting on edge. I will be mounting a 1 ton chain hoist by a 2”x36” tow hook strap rated up to 3,300 lbs dead load ...
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107 views

How do I make my floating shelf stronger/less susceptible to vibrations?

I'm building an entertainment center. I plan to put a turntable on the middle shelf in the picture below. There will be a floor standing speaker directly below the shelf. I expect the bass from the ...
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567 views

Permanent greenhouse structure materials

I'm planning a permanent greenhouse structure that will be attached on one wall to my house. The estimated size will be about 16ft wide, 45ft long, with the lowest wall being approximately 9ft tall ...