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Looking to build a deck off my house and want to know how
looking to build a deck off my house and want to know how far i can cantilever 2x8 or 2x10 joists...i want to set the 4x6 in toward the building as much as posible because i deck will be over half of … read more
PaulP324
PaulP324
consulting engineer
MS
1,264 satisfied customers
I have purchased a home that has a 21 span between columns
I have purchased a home that has a 21 span between columns that support a deck over the driveway to the garage entrance. The current beam configuration is a 8x6 beam sistered to a 6x6 beam alongside o… read more
PaulP324
PaulP324
consulting engineer
MS
1,264 satisfied customers
What is the maximum cantilever allowed over a pier footing
what is the maximum cantilever allowed over a pier footing for three 2x10 beam spanning 18 ft?… read more
PaulP324
PaulP324
consulting engineer
MS
1,264 satisfied customers
I am building a double outhouse and storage closet,
Hi! I am building a double outhouse and storage closet, basically 3 4'x4' rooms, on a 16'x8' deck. I am planning on using PT 4x6's on pre-cast pier blocks for the foundation. My question is: how far c… read more
walkereng
walkereng
Consultant
Bachelor's Degree
5,139 satisfied customers
I need to span 15 feet between posts. Flush beam, 12” joist
I need to span 15 feet between posts. Flush beam, 12” joist spacing, 13' joist span. Second story deck … read more
PaulP324
PaulP324
consulting engineer
MS
1,264 satisfied customers
Second level joist with cantilever deck on 2 perpendicular
Second level joist with cantilever deck on 2 perpendicular sides. I'm trying to figure out how to achieve this without posts. … read more
StructuralEng
StructuralEng
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Bachelor's Degree
8,463 satisfied customers
Two 20 foot W12x26, cantilevered 15' over water 12 feet
Two 20 foot W12x26, cantilevered 15' over water 12 feet apart with 2x6 treated planks At the land end about 6ft from bulkhead and 3'-6" below grade, concrete pad 5'x5'x3' deep supporting uplift forceB… read more
StructuralEng
StructuralEng
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Bachelor's Degree
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I'm looking to build a deck support beam: ----------- Deck
I'm looking to build a deck support beam: ----------- … read more
StructuralEng
StructuralEng
Consultant
Bachelor's Degree
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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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Bachelor's Degree
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I'm replacing a 16.5' span that held up a enclosed porch
I'm replacing a 16.5' span that held up a enclosed porch extension 4x6. it is currently braced at 8 feet with a 4x4 post. I want to eliminate the middle post and have an open span of 16'. I need this … read more
StructuralEng
StructuralEng
Consultant
Bachelor's Degree
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What is the maximum span interior wall cut-out which is now
What is the maximum span for an interior wall cut-out which is now vertical 2x6s with 16" spacing in order to make an opening. Of course, I would use multiple 2x6s for the 2 posts and multiple 2x10s h… read more
StructuralEng
StructuralEng
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Bachelor's Degree
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I wish to use 2x6 T&G Decking over 4x10s (spanning 12 ft) on
I wish to use 2x6 T&G Decking over 4x10s (spanning 12 ft) on a 3/12 pitched roof (deck) overhang in the Pacific Northwest west of the Cascade Mtn. range. Question: Spacing of 4x10s...How close do the … read more
StructuralEng
StructuralEng
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Bachelor's Degree
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Good Morning: I'm designing a 16' x 20' outbuilding and I
Good Morning: I'm designing a 16' x 20' outbuilding and I have 3 questions so far. In Redding, CA. My floor will be ¾” OSB on 2x6 joists (16” oc). The joists will run the 20 foot length and the beams … read more
StructuralEng
StructuralEng
Consultant
Bachelor's Degree
8,463 satisfied customers
Im looking to build a treehouse for my kids. The trees I want
I'm looking to build a treehouse for my kids. The trees I want to use are in a rough triangle, so I was planning on using this as a layout: http://imgur.com/hORkqzW The plan is missing the end joists … read more
StructuralEng
StructuralEng
Consultant
Bachelor's Degree
8,463 satisfied customers
I am trying to extend an existing cantilever deck by 2 from
I am trying to extend an existing cantilever deck by 2' from a 4' to a 6' overhang. Current deck was built using 2x10x16 joists spaced 14" apart. I am looking at sistering additional 2x10x16 to the ex… read more
StructuralEng
StructuralEng
Consultant
Bachelor's Degree
8,463 satisfied customers
There is a 4x6 (nominal) spanning 10 ft horizontally, which
There is a 4x6 (nominal) spanning 10 ft horizontally, which sits on a 10x10 post on one end and a 4x6 post on the other end. One of the deck ban joists runs along the top of the horizontal 4x6, with e… read more
StructuralEng
StructuralEng
Consultant
Bachelor's Degree
8,463 satisfied customers
Dome guy again. Want to change the parameters of the deck joist
Dome guy again. Want to change the parameters of the deck joist span and get new beam size. 4" concrete on plywood deck. Joist span 6'6" (was 8') with 1.5' cantilever, beam spans 12'. Using 2 x 12 joi… read more
StructuralEng
StructuralEng
Consultant
Bachelor's Degree
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For the standard deck joist O.C. vs span charts, what is the
For the standard deck joist O.C. vs span charts, what is the tolerance for the O.C. We are constructing a deck with a with 14' span (+2' overhang) and using 2" x 10" joists. 16.35" span works out even… read more
StructuralEng
StructuralEng
Consultant
Bachelor's Degree
8,463 satisfied customers
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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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