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I have a question for a structural engineer. I am seeking to
I am seeking to add a supplemental structural ridge beam under a ridge board in an old garage, which has some roof sagging (3-4"). It's got 2x8 rafters, 4/12 pitch, and just a 2x8 ridge board with no rafter ties and just a few collar ties. Span is 24'. We would like to drywall the underside of the "cathedral" type ceiling. The walls are concrete block except for the triangular gable ends which are framed. We are not looking to remove anything existing, just slide in a supplemental beam as described here: https://www.youtube.com/watch?v=BMSo-avByjY&list=WL&index=6&t=0s The video shows roof trusses being cut, but we have no trusses - it just describes the method of lifting we'd like to use. My question is, what size LVL beam do we need? The supplier near me offers microlam LVL 1 3/4" thick beams in 14", 18" tall, and other heights, in any length, that are supposed to be sandwiched to make any width like 3.5" or 5.25". We do not want to add rafter ties because the vertical walls are only 7' tall and we need the headroom. … read more
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I need to replace a rafter tie that was removed from the
I need to replace a rafter tie that was removed from the roof joists of an old railroad station when it was converted into apartments in the 1950's. The roof was once covered in clay tiles (1000# ****… read more
StructuralEng
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I am having a great room built with open ceiling. the
I am having a great room built with open ceiling. the overall dimensions are 22 ft wide by 36 feet long; 4 foot overhand on one gable end and standard 1 foot at other gable. the roof rafters will cons… read more
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I want to take out a bearing wall. It is a 16' inside span.
I want to take out a bearing wall. It is a 16' inside span. It is a second floor 50lbs/sqft. The overall joists are 24' the beam will be in the middle. The depth is 9.5". What combination of lvl and s… read more
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I have a horse corral made of 1 5/8 pipe panels, called a 4
I have a horse corral made of 1 5/8 pipe panels, called a 4 rail (4 horizontal rails on each pannel). … read more
StructuralEng
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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
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What size microlam is needed for a 22' wide opening? I'm
what size microlam is needed for a 22' wide opening? I'm taking the center support out (3 ft wall between 2 garage door openings ) to create a 22 ft wide continuous span. My intent/plan is to use (2) … read more
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I have a bowing concrete block was and i am trying to figure
I have a bowing concrete block was and i am trying to figure out if it needs pushed back into place or just secured so it doesn't get any worse. It is above ground exterior wall 8' tall with approx 1"… read more
StructuralEng
StructuralEng
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I need to replace a load bearing wall section with a beam to
I need to replace a load bearing wall section with a beam to support roof only, no second floor. The opening is going to be 10 feet, the ceiling joists are 17 feet on one side and 12 feet on the other… read more
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I want to open up the wall between my kitchen and living room.
I want to open up the wall between my kitchen and living room. The wall is load bearing. The joists are 2x4 16 inch oc and the attic is non storage non occupied. The attic does hold the HVAC ducts, el… read more
StructuralEng
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We added an addition to the back of the house and want to
We added an addition to the back of the house and want to open up the wall between them. This is the existing load bearing wall that supports the roof rafters. the rafters and ceiling joists are both … read more
StructuralEng
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I am building a cover storage along the side of my house. It
I am building a cover for fire wood storage along the side of my house. It will extend 5' off the side of the house. What size beam will I need to span 6'X6" columns 8 ft on center with a snow load of… read more
StructuralEng
StructuralEng
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The house is 24' wide and has a hip roof. I want to remove
The house is 24' wide and has a hip roof. I want to remove one bedroom wall to make one out of two. The wall I want to remove runs from the end of house towards the center. Span would be 11' 6". The h… read more
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StructuralEng
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can a 4"x8" douglas fir rafter span 20' when used with a 3
can a 4"x8" douglas fir rafter span 20' when used with a 3 - 12 pitch and a metal sheet roof. Its an outdoor patio overhang that spans 20" x20"… read more
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I have a two story home built in 1979, nw oregon. 2x6 ceiling
I have a two story home built in 1979, nw oregon. 2x6 ceiling joist, I would like to take out 8 1/2 feet of wall of what I am almost absolutely sure is a load bearing wall, top floor. The bottom floor… read more
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I would like to find out what size beam you would recommend
I would like to find out what size beam you would recommend for this project. I have load bearing wall with a 5 foot opening in it now that I would like to open up to a 12 foot opening. There is a 10 … read more
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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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Existing porch 72 inches wide. One side supported by wall of
Existing porch 72 inches wide. One side supported by wall of house, other side supported by posts @ 66 inches oc. The existing 22 foot beam is most likely 2 11 foot beams spliced on top of the post we… 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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