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I have a shed dormer framed up with its rafters (2x6) at
I have a shed dormer framed up with its rafters (2x6) at ~2.7/12 pitch. The rafters are nailed into a ridge board (2x8). Do I need a ridge beam if I use rafter ties?… read more
StructuralEng
StructuralEng
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I am going to build a home this spring and I am looking for
Hello, I am going to build a home this spring and I am looking for what size I-beam required to clear span 34' for a structural roof ridge. The run is 23' the pitch is 12/12 using 14" I-joist rafters … read more
StructuralEng
StructuralEng
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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
StructuralEng
StructuralEng
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Designed a SaltBox Roof w/ adjacent Rooftop Deck. Underneath
Designed a SaltBox Roof w/ adjacent Rooftop Deck. Underneath the SaltBox Roof Attic space I created a Theater Room by popping up the center (Dormer) portion of the longer fable roof beams 10' high. Th… read more
Shannon Galway
Shannon Galway
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I am building a cabin 32' by 20' with a 10/12 metal roof. I
I am building a cabin 32' by 20' with a 10/12 metal roof. I was wanting to have a vaulted ceiling with a structural ridge beam. If looking at the length of the cabin, I was planning a vertical 12"x12"… read more
StructuralEng
StructuralEng
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New to this site, how does this work. Looking at building a
looking at building a vaulted ceiling for a small cottage, the ridge beam would be 17 ft long and the room is 30 ft wide, located in florida not on the coast … read more
StructuralEng
StructuralEng
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I have an addition we're building to my home it's 27' wide
Hello I have an addition we're building to my home it's 27' wide 16 feet long..2x10 roof rafters that are 15feet 6 inches long 16 on center with 2x12 ridge beam 5/12 pitch I live in Vermont we're we g… read more
StructuralEng
StructuralEng
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I had an addition built 6 months ago ,cathedral. He used 2x6
I had an addition built 6 months ago ,cathedral. He used 2x6 for rafters its 22' long 2" engineered wood beam. 6 ' rise from top plate and13' run from beam to plates each side. About 5/3 pitch? He did… read more
walkereng
walkereng
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Span 36 wide house with 8 pitch and 130 # snow load, New
Span 36 wide house with 8 pitch and 130 # snow load … read more
StructuralEng
StructuralEng
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I would like to finish my attic space, How can I remove
I would like to finish my attic space, How can I remove collar ties and retain the strength that they provide to the roof?… read more
walkereng
walkereng
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I'm considering vaulting the ceiling in my garage. The roof
I'm considering vaulting the ceiling in my garage. The roof has 2x4 rafters/ ply/ and composite shingles (trusses are made with 2x6 joists and 1x6 supports every 4'). I'd like to bolt together 1 3/4" … read more
StructuralEng
StructuralEng
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I'm building a 16 x 30 cabin with a 12/12 slope cathedral
Hi, I'm building a 16 x 30 cabin with a 12/12 slope cathedral ceiling. The drawing I purchased calls for 2x6 rafter with a 2x10 ridge beam. I have some concerns about wall spread with a snow load. I d… read more
StructuralEng
StructuralEng
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hi, i took the ceiling roof rafters off of my porch ceiling
hi, i took the ceiling roof rafters off of my porch ceiling 22x10 x 8 foot ceiling, distance to ridge is only about 14 feet from floor, and bolted 2x6 collar ties to each roof joist which are old 2x6'… read more
StructuralEng
StructuralEng
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i have a 20 wide garage with a sagging ridge. it has a 16"
i have a 20' wide garage with a sagging ridge. it has a 16" wide door that is also sagging. it has a 1x6 ridge now which i'll replace with a beam. what size GLB or LVL should i get? thanks mike… read more
StructuralEng
StructuralEng
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We had a question history on a steel i beam that you resolved.
We had a question history on a steel i beam that you resolved. However, now we are planning on converting the ceiling from flat to vaulted. That hopefully removes the need for the steel beam. Here are… read more
StructuralEng
StructuralEng
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Bachelor's Degree
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I am replacing my asphalt shingle roof and modifying it at
I am replacing my asphalt shingle roof and modifying it at the same time. In the future I will remove the existing ceiling to create a cathedral ceiling. I am removing the existing 3/4" plywood deck a… read more
walkereng
walkereng
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Bachelor's Degree
3,858 satisfied customers
Trying spec materials for a 24WX34L 12:12 cathedral roof system
Trying spec materials for a 24WX34L 12:12 cathedral roof system without a center ridge post. Is there any way to frame this conventionally without the large post in the 34' axis?… read more
StructuralEng
StructuralEng
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Hi again, based on the beam sizes you provided me, can I get
Hi again, based on the beam sizes you provided me, can I get away with no interier ceiling joists ? Maybe I can add a simple 2"x4" x 3' collar to each rafter and be OK ? Thanks,… read more
walkereng
walkereng
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Bachelor's Degree
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