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16" 19.2" and 24" are the standards, because they will all divide evenly into a sheet of plywood deck
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What is the standard spacing for ceiling joists and why?
It is usually 16 inch.
Does floor joist height increase with length of joist?
Not really. All joists will be the same whether you are working on a 1st or second floor, so your floor does not have a bunch of different levels. Usually we use 2 x 12 lumber, doubling joists which have walls above them or decreasing the spacing if you are at the limits of the span. example you have a 22' span in a garage with living area above it, you would use 2 x 12 with 12" on center spacing.
How much weight can 2x8 floor joists hold?
That depends on how well supported the floor is and that depends on how far apart the joists are placed. The closer they are, the more weight can be supported.
Can hardwood run parallel to JOISTS?
If you're installing hardwood floor boards over a strong 3/4 inch plywood sub-floor, then yes, you can install the hardwood floor parallel to the joists. If your sub-floor is weak, then you should fix the subfloor.
What size of beam do you need to span 18 ft?
For ceiling joists, the minimum dimension per the IBC is a 2 x 12 inch, with spacing dependent on the load. Ideally, these would be screwed to blocking between the joists.
What is Standard spacing for floor joist determined by?
Spacing for floor joists is usually determined by building codes for the location
What is the standard spacing for ceiling joists and why?
It is usually 16 inch.
What is the spacing on rafters in a mobile home?
Typical construction layout for mobile home floor joists is 24'' on center. Some older models may be laid out 48'' on center depending on type and size of floor joist used.Ans 2 - MOST mobile homes made since 1975 have 16" spacing of floor joists. Mine and many others I've seen are 16" spacing. -I've looked at and re-floored many.My ceiling rafters are also 16" spacing. - Never seen 24" spacing.
Does floor joist height increase with length of joist?
Not really. All joists will be the same whether you are working on a 1st or second floor, so your floor does not have a bunch of different levels. Usually we use 2 x 12 lumber, doubling joists which have walls above them or decreasing the spacing if you are at the limits of the span. example you have a 22' span in a garage with living area above it, you would use 2 x 12 with 12" on center spacing.
What size of floor joist should you use?
Different situations call for different joists. Generally floor joists are 2 x 12.
What weight will a tongue and groove floor hold?
The variables include the support mechanism under the floor (ie: spacing & size of floor joists, structural strength of the tonque and groove flooring material, (ie: is it pine, birch, maple, etc.) and how thick will the flooring be?
How far should boards be for subflooring?
Standard wood floor joist spacing is 16" on center.
Can roof joists run in a different direction to floor joists?
Yes. Rafters and flloor joists do not have to run the same direction.
What is the strongest method for installing floor joists?
Joists resting upon sills and girders
What are timbers under the floor called?
floor joists and they sit on bearers
Why does upstairs shake when walking?
If your house is wood framed with wood joists, the shaking may be caused by floor joists being too small. This will cause the floor to sink whenever a person walks across the room. Floor joists should be size by an experienced carpenter, architect, or engineer to prevent movement.Another cause of floor movement may be insufficient bracing between the floor joists. This will cause sagging and twisting of the joists.There are several solutions that require the skills carpenter. New joists can be added beside the existing joists to strengthen the floor. Another option is to add one or more beams and columns in the room below the floor. Or blocking can be added between existing joists to add support.
What supports the load of floor joists in a large room?
Floor joists in standard U.S. residential construction are supported on the outer walls by a foundation, typically cement block or concrete. Between outer walls, support may be necessary in the form of a support beam resting on posts which transfers load to a concrete pier.
