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I have 17' real 2" x 6" rafters spaced 24" on center in a
I have 17' real 2" x 6" rafters spaced 24" on center in a 1948 house. They appear to be pine (very hard from age I assume). The span is 30'. Can I sister a #2 SPF 2x6 to each existing rafters to meet … read more
walkereng
walkereng
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I'm in the process of finishing a single story, detached
Hi all,I'm in the process of finishing a single story, detached garage with a gable roof that I've spent the summer building. The garage is 16' wide, 24' long garage with 9' walls. The walls are frame… read more
walkereng
walkereng
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I have existing 19'-10" W x 36'- 0" L shop garage building.
I have existing 19'-10" W x 36'- 0" L shop garage building. I currently has a single slope roof using wood joists, 3/4" wood plan sheathing, and 5-vcrimp metal roof. What is there now is in very poor … read more
StructuralEng
StructuralEng
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Remodeling older house. Rafter roof over bedroom has ceiling
Is there anything else the Structural Engineer should be aware of?Customer: adding a beam under joists 16' long that will support 16' of joists. Built beam out of 2x8 x 16 with 6 layers of 3/4" ply glued in between 2x's. then will add sister joist to existing 2x6's over the beam using 2x8s… read more
walkereng
walkereng
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Remodeling older house. Rafter roof over bedroom has ceiling
rafter roof over bedroom has ceiling joists 24"oc out of 2x6. attic floor bounces alot with addition of attic access. (it bounced before but was not noticable to this degree) … read more
StructuralEng
StructuralEng
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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 have a 24'x24' detached garage and I would like to
Hello, I have a 24'x24' detached garage and I would like to insulate and sheet rock the ceiling. Currently there are 2x6 rafter ties spliced together but they barely hold their own weight. I would lik… read more
StructuralEng
StructuralEng
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I want to convert my hip roof garage attic to a room. How
I want to convert my hip roof garage attic to a room. How can I reframe to make space? It it 23x30 and has 2x6 rafters, 2x8 joists joining on a giant engineered beam with 14' and 16' spans respectivel… read more
Shannon Galway
Shannon Galway
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2nd floor garage loft with span of 15.5' I have a garage
i have a garage with tall ceilings. the current ceiling rafters are 2x6 and span 16'.. id like to utilize the storage up there since is 6' to the ridge. because of this height i'd like to put a staircase in the back of the garage to access the attic space/ceiling space... i don't want to shrink the attic space even by an inch hence, stay with the 2x6 ceiling joists and 16' spans... my thoughts are to add either 4x6x16' every 12" on center to make it sturdy up there to walk around on, after i lay down 3/4" t/g plywood. … read more
walkereng
walkereng
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I am expanding my garage with a 2nd floor bonus room above.
I am expanding my garage with a 2nd floor bonus room above. I can attach my plans, but I need to confirm that my spans are good and the beams/rafters are properly sized. The garage is 18' x 22' and th… read more
walkereng
walkereng
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I'm building a garage at my home and have a question on the
Good morning.I'm building a garage at my home and have a question on the need for rafter/ collar ties and if I should install 2x4 struts from the rafter to the joist. The joist assembly is a full box … 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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I need to size a beam to replace a bearing wall. the opening
I need to size a beam to replace a bearing wall. the opening will be 9'6". The beam will carry joists coming in from both sides, 16"o.c., uniform load. Span on both sides is about 14 ft. There are par… 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 am remodeling a Single Family 1 story home that a giant
I am remodeling a Single Family 1 story home that a giant Oak Branch destoryed the bedroom wing, with span of 18'6",What size Doug Fir lumber do I need to use for the ceiling joists as well as rafters… read more
walkereng
walkereng
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Bachelor's Degree
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I would like to build two 6 ft. wide dormers on an existing
I would like to build two 6 ft. wide dormers on an existing 28' wide cape cod style house. The existing roof structure is 2x6 rafters at 16" o.c. with a 2x10 ridge board and 2x6 ceiling joists/collar … read more
StructuralEng
StructuralEng
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Bachelor's Degree
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Garage built in the 60s with 2x6 rafters spaced at 16" holding
Garage built in the 60's with 2x6 rafters spaced at 16" holding the roof and 2x6 joists for the ceiling spaced at 48". The garage is 24x30 with an 18 ft garage door. I want to add storage above the ce… read more
StructuralEng
StructuralEng
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My 22 x 22 garage ceiling is sagging about 3" in the center.
My 22' x 22' garage ceiling is sagging about 3" in the center. It has 2"x6" joists across at 24" on center, with 2 strong back supports perpendicular to the joists and an additional strong back suppor… 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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