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What spacing is required when utilizing 4x12 beams to span
what spacing is required when utilizing 4x12 beams to span 25 feet on a 3/12 pitch roof? … read more
walkereng
walkereng
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I am building a pergola. It is 10 ft x 16 feet. I am
Hi I am building a pergola. It is 10 ft x 16 feet. I am planning on using 4x6x16 posts cemeted 4 ft into the ground. I wanted to install 5 beams at the top (three 10 footer and two 16 footers. I can n… read more
walkereng
walkereng
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How much can a pressure treated fir 6x12 support with a 12
How much can a pressure treated douglas fir 6x12 support with a 12 foot foot span? … read more
walkereng
walkereng
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I have a customer that wants to build a pergola with 20 foot
I have a customer that wants to build a pergola with 20 foot span, What sized beam needs to be used for this application? would a double 2x10 support the load?… read more
walkereng
walkereng
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Will a 4x12 be able to span 17'6" carrying a roof load,
Will a 4x12 be able to span 17'6" carrying a roof load, (5/12 pitch, 4x6 rafters 24"oc, asphalt shingles for a patio cover 12'x18') … read more
walkereng
walkereng
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Building a RV shelter outside dims 14' x 28. Using 6 8x8
Building a RV shelter outside dims 14' x 28. Using 6 8x8 posts (3 on each site). 4x12 ridge beam and 4x12 beam where rafters sit on spanning 14'. 2x8 rafters @24" center. Roof pitch is 10/12. … read more
walkereng
walkereng
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I'm adding an 18' beam to support the roof structure and am
I'm adding an 18' beam to support the roof structure and am confused on what size beam I should be getting. I've calculated the load per square foot at 250. Please help?? … read more
StructuralEng
StructuralEng
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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
StructuralEng
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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
StructuralEng
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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
Expert
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
StructuralEng
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Bachelor's Degree
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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
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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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
StructuralEng
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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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Bachelor's Degree
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I ccurrently have a two car garage, (2) openings of 7.5 feet
I ccurrently have a two car garage, (2) openings of 7.5 feet with a 4" column in the center. The header is single piece of douglas fir, actual demensions are 3.5 x 9.5. I want to close in one of the d… read more
StructuralEng
StructuralEng
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Bachelor's Degree
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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
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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