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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 10x30' garage converting to livable space. ceiling
i have a 10x30' garage converting to livable space. ceiling is pitched framed with 2x4 rafters at 24 oc. no ceiling joists. how can i install R38 insulation into rafters. i don't want to add too much … read more
walkereng
walkereng
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Question about layout of roof trusses and insulating the tin
question about layout of roof trusses and insulating the tin roof of my small old farm house cottage … read more
StructuralEng
StructuralEng
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Structural engineering question: i want to open a wall on
structural engineering question: i want to open a wall on the ground floor of a house, to a max span of 9'-0". the existing wall is built from 2 X 4" construction, so i want to use a steel beam that i… 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 would like to remove 8 feet of a load bearing wall. the
i would like to remove 8 feet of a load bearing wall. the house is one story brick, built in 63 with brick on concrete block. the roof is a hip roof, all open inside, just ceiling joists runing front … read more
StructuralEng
StructuralEng
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I want to take out a 15 ft section of a wall that picks up a
I want to take out a 15 ft section of a wall that picks up a single story roof span that is 2x4 rafters 24 oc the rafters are 18ft long from ridge down to outer wall plate , id ;like to flush a beam i… read more
StructuralEng
StructuralEng
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My house has a roof made of 2x4 rafters 24" on center. No
My house has a roof made of 2x4 rafters 24" on center. No other collars or bracing. Span is 22 ft and the attic floor is 2x8's on 24 " centers. I want to strengthen the roof as we get a lot of snow so… read more
StructuralEng
StructuralEng
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Raise ceiling joist of 20'x20' - 1927 detached garage.
Raise ceiling joist of 20'x20' - 1927 detached garage. Current ceiling height is 7'2". Stick framed, rafters butt together no ridge board. 2x4 old growth doug fir rafters and joist. Every pair of raft… 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 live in a manufactured home built in 1985.My roof retains
I live in a manufactured home built in 1985.My roof retains a lot of heat in the summer time. There is no attic to put insulation. Is there some kind of roofing material that will insulate my roof tha… read more
walkereng
walkereng
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3,541 satisfied customers
I have a 12 foot span new door with a 2x4 wall . 2x6
I have a 12 foot span for a new door with a 2x4 wall . 2x6 rafters on roof sitting on this span, the roof is comp shingle 4o year i think. can i use a 3-1/2 x12 para lam or a lvl on this 2x4 wall than… read more
StructuralEng
StructuralEng
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I live in a 1.5 story 100 year old home. I am currently renovating
I live in a 1.5 story 100 year old home. I am currently renovating my house in stages. Gutting everything to the studs and repairing replacing everything that needs it. I am replacing the siding next … read more
StructuralEng
StructuralEng
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My current attic is a truss system all using 2x4s. Is it possible
My current attic is a truss system all using 2x4s. Is it possible to build another structure next to and attached to the original 2x4 ceiling joists and 2x4 rafters leading up to the pitch of the roof… read more
StructuralEng
StructuralEng
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I built an addition to my mobile home 30 years ago. Its messurements
I built an addition to my mobile home 30 years ago. It's messurements are 12Wx32L. I have a pitched roof going from my mobilehome's roof to the outer walls of my addition. I used 2x4 PT for the roof r… read more
StructuralEng
StructuralEng
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Bachelor's Degree
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Hello My name is XXXXX XXXXX am helping a relative repair a 110
Hello My name is XXXXX XXXXX am helping a relative repair a 110 yr old 2 1/2 story building. It is built with 2x4s. It has a 10-12 pitch roof with a valley about 10 ft in on both sides.The support bel… read more
StructuralEng
StructuralEng
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Bachelor's Degree
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I want to install a shed dormer in the upstairs of a house
I want to install a shed dormer in the upstairs of a house that has a 7/12 pitch roof. The finished headroom in the current attic space is 76". Currenrt rafters are 2x4. The clear span of the shed raf… read more
ibosley
ibosley
Master's Degree
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