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I am building a carport and need to know what size beam is
I am building a carport and need to know what size beam is required to cover a 20' span un-supported in the center. … read more
walkereng
walkereng
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Can I replace a 4x12 (nom 3 1/12 x11) douglas fir beam with
can I replace a 4x12 (nom 3 1/12 x11) douglas fir beam with a BC Glulam size 3 1/2 x 9 ? Span is 12ft with connecting beam mid span (focused load). for Mid Century Mod house. … read more
StructuralEng
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What size beam do I need to span 12 feet carry roof joist 16
What size beam do I need to span 12 feet carry roof joist 16 feet 16inch on centers. All Doug fir. … read more
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walkereng
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I have a building with a second floor deck. The walls
I have a building with a second floor deck. The walls supporting it are 2x6 with built up columns which support 7.5”x5.75” Douglas fir beams. The decking is 2x6 tongue and groove Douglas fir and the b… read more
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I am building a Pergola 20'x20'. I will be using 4x12x20
I am building a Pergola 20'x20'. I will be using 4x12x20 full dimension douglas fir for the beams. They will be supported on 8"x8" columns. The rafters will be 3x10x20 full dimension douglas fir. The … read more
StructuralEng
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Trying to calculate a beam to support a flat roof garage 16'
Trying to calculate a beam to support a flat roof garage 16' span … read more
walkereng
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I have a porch that is 6 foot by 32 foot. It has 5 4x4x8
I have a porch that is 6 foot by 32 foot. It has 5 4x4x8 posts 8' OC that support a 4x12 douglas fir beam that is actually 2 16' beams. We want to remove the three center 4x4's and have one column at … read more
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Expert
Planning to vault a ceiling in a 24' (clear span) x 28'
Planning to vault a ceiling in a 24' (clear span) x 28' total span room. Current roof structure is 2x6 rafters 16" oc. Hoping to install douglas fir ridge beam with support framing from concrete found… read more
StructuralEng
StructuralEng
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Bachelor's Degree
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I plan to knock out an existing CMU column to install a
I plan to knock out an existing CMU column to install a patio door that is 155in wide. A 3.5in wide by 7in high (actual dimensions) beam (I'm pretty sure that the beam is made out of Douglas Fir) hold… read more
StructuralEng
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Re-supporting a 2nd level exterior deck. I have a 4x10 beam
Re-supporting a 2nd level exterior deck. I have a 4x10 wood beam supporting 1/2 of a 14'x14' deck above on one side. The 4x10 has a full span of 14' but there is a mid point column (at 8') that I want… read more
walkereng
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I would like to remove a section of a center wall under a main
I would like to remove a section of a center wall under a main floor. I would like to inset a new flitch beam, flush with the 2x12 floor joists and hang the joists from the side faces of the beam. The… read more
StructuralEng
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I need to know the appropriate dimensions for a 5 foot window
I need to know the appropriate dimensions for a 5 foot window header in a 2/4 wall. Will a double 2x8 fir with 1/2" plywood between be strong enough?… read more
StructuralEng
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I want to remove a bearing wall that is 20 feet long and add
I want to remove a bearing wall that is 20 feet long and add two beams that will meet at a column in the middle of that span. Approximately a 10 foot span - column - 10 ft span. Bearing wall is direct… read more
walkereng
walkereng
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I plan to use 2x4 or 2x6 on edge to build a deck only 10
I plan to use 2x4 or 2x6 'on edge' to build a deck only 10 ft wide. The on-edge lumber will be supported by 4x12 on each end. Hence the lumber will act as the joist and the floor surface. Will this co… read more
walkereng
walkereng
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to make a creek crossing spanning 18 to 20 feet across what
to make a creek crossing spanning 18 to 20 feet across what size would the douglas fir timbers have to be say to hold 10000 lbs… read more
StructuralEng
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I have a room 21 wide by 24 deep with a bearing wall down
I have a room 21' wide by 24' deep with a bearing wall down the middle. The roof has about 2/12 pitch and the snow load for the area is 55#. There are 4x12 purlins spaced approx 4'3 apart spanning the… read more
walkereng
walkereng
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I would like to replace a structural post in the middle of
I would like to replace a structural post in the middle of a wall. The structural post I'm replacing is now 4 vertical - 2x6's holding up the roof trusses for this 11 foot span. I would like to place … read more
walkereng
walkereng
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I am building a 24 foot wide by 48 foot deep garage. The 16
I am building a 24 foot wide by 48 foot deep garage. The 16 foot door will be on the 24 foot side. I want to have a single slop across the 24 foot span. I have a ten foot wall on one side and an 8 foo… read more
StructuralEng
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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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