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Structural engineering. I have a 18' clear span of exterior
structural engineering. I have a 18' clear span of exterior wall I'm taking out for an addition. The existing house has a cathedral ceiling and rest on the wall I'm taking out. The roof pitch is 12/12… read more
Yaw, BSc
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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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What size fir or glue lam can span 20 ft from post to post
What size Doug fir or glue lam can span 20 ft from post to post with yeaha two ft overhang on a thre and 12 roof of comp shingle and 2x10 rafters 16 inches on center? … 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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Detached garage. I would like to have a cathedral ceiling in
Detached garage. I would like to have a cathedral ceiling in a 24x36 detached garage with a 5/12 roof pitch. If I use LVL beams at 12' intervals along the 36' width (2 24' LVL beams) to support my roo… read more
StructuralEng
StructuralEng
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I am looking to size a steel beam for residential framing in
Hello, I am looking to size a steel beam for residential framing in Montville NJ 07045. The joists on each side of the beam is around 19 ft. It is a two story structure, and will be supporting a roof … read more
walkereng
walkereng
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I am building a pavilion cover over a deck. I want to use
I am building a pavilion cover over a wood deck. I want to use cedar wood for the post, beams, and rafters. The post would be 8x8, the rafters 2x10 or 2x12 on 24" centers. The beams would span 14' on … read more
StructuralEng
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Building an addition on my garage. addition is 16' wide by
building an addition on my garage. addition is 16' wide by 24' long. need to be open(no rafter ties) to accommodate car lift. was planning on using 1 3/4 x 9 1/2 LVL as roof support beam. is there a b… read more
StructuralEng
StructuralEng
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I have a house in Granbury TX that I would like to make the
I have a house in Granbury TX that I would like to make the living room and kitchen open ceiling. The span is of the rafters is 42' and the distance across is 23'. I would like to install 5 beams acro… read more
walkereng
walkereng
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I need to span 21 ft 4 inches held up by existing walls on
I need to span 21 ft 4 inches held up by existing walls on either side. How big of a beam do I need to hold up the roof… read more
StructuralEng
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I have a customer who wants to remove a bearing wall between
I have a customer who wants to remove a bearing wall between kitchen and dinging room. Presently the wall is 12 feet long and carries 2x10 joist 16 OC that span 10 feet in one direction and 9 feet in … read more
StructuralEng
StructuralEng
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I have to span 20 feet to support the roof and ceiling. The
I have to span 20 feet to support the roof and ceiling. The open area is 20' x 17'. I have calculated the dead load weight of all the roof and ceiling materials at 3,350 lbs or 10.5 lbs/sq ft. What si… read more
walkereng
walkereng
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I would like to use a steel I-beam to replaced my existing
I would like to use a steel I-beam to replaced my existing header, because I want to replace two windows in the front of my house with one bay window. I would need to span 12 feet. I have a single sto… read more
walkereng
walkereng
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Clear span of 22.5 ft supporting cathedral ceiling ridge board
Clear span of 22.5 ft supporting cathedral ceiling ridge board with total width of 29 ft and tributary load of 330 lb/ft. Is there an alternative to steel W8x21 in a wood product?… read more
StructuralEng
StructuralEng
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Bachelor's Degree
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Hello, I have a pavilion with a ridge beam distance of 14. The
Hello, I have a pavilion with a ridge beam distance of 14'. The builder used two 2"x4"x16' nailed together for the ridge beam. The rafters are 2"x4"x9'. They run 9' from the ridge beam and over hang t… read more
walkereng
walkereng
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Hello, I have a pavilion with a ridge beam distance of 14. The
Hello, I have a pavilion with a ridge beam distance of 14'. The builder used two 2"x4"x16' nailed together for the ridge beam. The rafters are 2"x4"x9'. They run 9' from the ridge beam and over hang t… read more
StructuralEng
StructuralEng
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Bachelor's Degree
9,772 satisfied customers
I need to span 32 that will support ceiling joist and roof
I need to span 32' that will support ceiling joist and roof edge ONLY. Will be 9' off the ground. Roof pitch is 8 on 12. Roof deck is 5/8" osb covered in asphalt shingles. Southern climate-no snow loa… read more
walkereng
walkereng
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Bachelor's Degree
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I am constructing a timber outbuilding with a shed roof that
I am constructing a timber outbuilding with a shed roof that is cantilevered towards the peak. The main beam will support about 600 sq ft, I am keeping it a free span of 30' with no interior posts, th… 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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