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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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I have a 1950's Ranch Style house with a Gable roof (plus
I have a 1950's Ranch Style house with a Gable roof (plus two cross gables). Roof extends over a carport (gable end) with a Howe Truss (all nailed, no gusset plates). Truss consists of a 2x6 ridge bea… read more
Shannon Galway
Shannon Galway
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Bachelor's Degree
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Let's try this again. I am remodeling a 1970 Ranch home and
Let's try this again. I am remodeling a 1970 Ranch home and would like to raise the ceiling in the living area. 32 x 30. It has a truss ceiling and the truss runs the 32 foot length. Can I modify the … read more
StructuralEng
StructuralEng
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Looking to remove a load bearing wall and span that area
Looking to remove a load bearing wall and span that area with a beam. The opening is 18 feet. It is a single story ranch with a 41/2 pitch hipped roof. the overall width of the house (inside dimention… read more
StructuralEng
StructuralEng
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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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I'm looking to vault a ceiling in a home that has 2x6
I'm looking to vault a ceiling in a home that has 2x6 rafters at 16" oc. The rooof is a 4/12 pitch. There is currently a ridge board, color ties within the top 1/3, a load bearing wall situated below … read more
StructuralEng
StructuralEng
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I have a garage with a ceiling that I would like to remove
I have a garage with a ceiling that I would like to remove to expose a lofted or cathedral ceiling in it. I am not sure if I need to add a beam or rafter ties to make sure it is properly supported. Ga… 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 have a room in a remodel with conventional 8' ceiling that
I have a room in a remodel with conventional 8' ceiling that I want to convert to cathedral. Walls are 2 X 6 - 16"OC - roof is a 4/12 pitch and is … read more
StructuralEng
StructuralEng
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Can I ask why nailing additional roof rafters and attaching
Can I ask why nailing additional roof rafters and attaching them to existing roof trusses does the job of supporting the roof without the need for the ceiling joist? What is the physics behind it? Are… read more
StructuralEng
StructuralEng
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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
StructuralEng
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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 have a 14x65 older mobile home that has 2x4 walls and 2x6
I have a 14x65 older mobile home that has 2x4 walls and 2x6 floor and was wanting to go over the existing roof with a 2x6 truss system. since the existing roof uses 2x2 bows, can I attach a plate to t… read more
walkereng
walkereng
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Cabin is 24x24 Want to vault front 1/2 of it Has existing
Cabin is 24x24 Want to vault front 1/2 of it Has existing Howe trusses with4/12 pitch Going to run a 6x6 post at 12' and at front which will go through floor and sit on lvl beam with a 9"x9" concrete … read more
StructuralEng
StructuralEng
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I want to raise the ceiling joists for a 1 foot to gain ceiling height.
I want to raise the ceiling joists for a 1 foot to gain ceiling height. It has a "stick" hip roof 5/12 with 2x6 rafters 24" oc and 2x6 ceiling joist 16" oc. Rafters are 12' long. Either keep the joist… read more
walkereng
walkereng
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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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a load bearing wall in my screen porch bowed out in the middle.
a load bearing wall in my screen porch bowed out in the middle. The wall supports the roof.… read more
StructuralEng
StructuralEng
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looking to size a microllam beam. Replacing exposed beam w/
looking to size a microllam beam. Replacing exposed beam w/ pocket beam. Span is 18 ft. Perpendicular joists (expect to use hangers) span 10 feet each side of beam. Joists support 2nd floor, no walls … read more
StructuralEng
StructuralEng
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