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Related Structural Engineering Questions
Glulam span calculations. I need Glulam Beam Calculations
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Residential stick frame construction in Goldsboro, nc. Bonus
residential stick frame construction in Goldsboro, nc. Bonus room over garage 20'-6" width outside to outside. Bonus room finished floor dropped 13" below main 2nd floor finished elevation (sunken bon… read more
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I'm looking to cover my front porch, looking to cantilever
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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
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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
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Really? Sure, though I'm an electrical engineer - statics
Really? Sure, though I'm an electrical engineer - statics and dynamics weren't my forte. I am looking to build a Half porch (not gable but 1 side fixed to the house with 12 foot width, 25 foot length … read more
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I want to span 18' with a beam to support 2' oc 2x10 rafters
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I have to span 20 feet to support the roof and ceiling. The
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I'm considering vaulting the ceiling in my garage. The roof
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I am constructing a building app. 24' long by 30' wide with
I am constructing a building app. 24' long by 30' wide with a rafter beam spanning the 24' length and rafters 16'. I sandwiched 4 ply thick 2 by 10's yellow pine to make the beam. My problem is I'm ge… read more
StructuralEng
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If i have a deck with 2x10" southern pine joists at 18" spacing,
If i have a deck with 2x10" southern pine joists at 18" spacing, what's the maximum span if i use a 6x8" red cedar beam? and if using 6x6" red cedar posts to support that beam, what's the maximum spac… read more
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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
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I am building a 12 deep x 35 long porch roof; the longest
I am building a 12' deep x 35' long porch roof; the longest span is 12' between 6x6 columns. What is the smallest dimensional lumber I can get away with using for the beam? Thanks.… read more
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I am adding a porch roof to the rear of my house. I plan to
I am adding a porch roof to the rear of my house. I plan to use a 12:12 pitch roof (2"x8" rafters with 3/4" thick T&G Cedar attached to the bottom) and a single 2”x10” Ridge Bream. The porch/ridge bea… read more
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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
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I have a vaulted ceiling constructed with 2"x12"x20, 16"OC
I have a vaulted ceiling constructed with 2"x12"x20', 16"OC joists. My ceiling covers an area of 600SF with one framed support (Bathroom 6'X8') centered against exterior 2"X4" 16"OC stud framed wall. … read more
StructuralEng
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considering a ridge and plate beam porch with 2 side overhang
considering a ridge and plate beam 'porch' with 2' side overhang and 4' overhang at ridge. ledger board at building, posts at 8' and 16' from building. rafter beams at 4' along ridge. want to use lam … read more
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