A 2×12 floor joist is a common dimension for supporting an uninhabitable ceiling. The span, or the distance between supports, refers to how far apart they are spaced from one another in feet and inches. This question is relevant because of its practical application when installing floors and ceilings without using additional materials such as drywall.
The answer to this question depends on the weight of your home and its location. The width between joists is typically 16 inches, but it can vary.
The “floor joist span calculator” is a tool that allows users to find the length of a 2×12 floor joist. The user inputs the length and width of the joist, and then clicks on “Calculate.”
In general, 16-inch-on-center joists may reach 1.5 times their depth in inches in feet. A 2×8 may be up to 12 feet long, a 2×10 can be up to 15 feet long, and a 2×12 can be up to 18 feet long.
How long can a 2×12 span in this case?
A double 2×12 beam may span 12 feet, while a (2) 2×10 beam can span 10 feet, and so on.
What kind of wood can span a 20-foot span? 60 lbs/ft2 (2873 N/m2) maximum live load
| Maximum Length (ft – in) | ||
|---|---|---|
| Nominal Dimensions (inches) | Center to Center Joist Spacing (inches) | Grade of Lumber |
| 2 x 12 | 24 | 13′ – 2″ |
| 2 x 14 | 12 | 20′ – 10″ |
| 16 | 18′ – 0″ | |
What is the maximum span for a 2×10 floor joist, for instance?
21 feet
What is the maximum span of an I joist?
Spans are clear lengths between supports based on composite action with glued-nailed APA Rated® sheathing or Sturd-I-Floor® panels of minimum thickness 1932 (40/20 or 20 o.c.) for joist spacing of 19.2 or less, or 2332 (48/24 or 24 o.c.) for joist spacing of 24 or more.
Answers to Related Questions
What is the maximum span that a 2×6 beam can span without support?
In general, 16-inch-on-center joists may reach 1.5 times their depth in inches in feet. A 2×8 may be up to 12 feet long, a 2×10 can be up to 15 feet long, and a 2×12 can be up to 18 feet long.
What is the maximum weight that a 2×12 beam can support?
About 180 lbs. per foot, or 2,100 lbs., may be supported by a single 2×12.
What is the maximum weight that a 2×10 floor can support?
In fact, each 2×10 can hold up to 1,200 pounds. To be explicit, “clear spans” are used to quantify spans. To put it another way, from one face of support to the next. Also, if your BBQ is in the center of the span such that people can stand around it, the joists will be subjected to an extra “Live Load.”
What is the maximum span of a triple 2×6 beam?
For standard deck loads, a triple 2×6 beam over a 10′ width should be more than enough.
How far can a double 2×8 beam span?
When the deck joists are 6 feet long, a double 28 beam may span 8 feet and 0 inches.
What is the maximum weight that a 2×8 can support?
Some of it is rather technical, and it largely concerns pounds per square foot of loading. 2x6s are often utilized for ceiling joists, especially because you said 24 inches “only oc and very short spans (5 or 6 feet ). Most floor loads would be at least 2×8 @ 16 inches “oc and, if possible, 2×10.
What is the best way to size a beam for a load-bearing wall?
The section modulus is calculated by dividing the beam width by the beam depth squared by 6. The actual dimensions of two 2-by-6 standard beams are 1.5-by-5.5 inches, giving a section modulus of 1.5 x 5.5 x 5.5 / 6 = 7.6, which is insufficient for this case. It would be sufficient to use a 2-by-8 beam.
How far may a 2×8 joist be cantilevered?
The cantilever may be 3 feet if the code span tables allow a 2×8 to span 12 feet.
What is the maximum weight capacity of 2×6 floor joists?
A correctly built office floor, for example, can hold 50 pounds per square foot. This may seem light, but it weighs 50 pounds every square foot of floor area. It does not imply that a 300-pound lineman standing on one leg would collapse to the ground.
How far may a 2×6 joist be cantilevered?
When the joists are positioned 16″ apart, 2×6 floor joists may be cantilevered up to 2 feet and 6 inches (2′-6″), according to the chart below.
How far may trusses span before they need to be supported?
Internal supports are not required for trusses that span 10-15 meters or more.
How far can a 6×12 beam be span?
The loading condition is 40 pounds per square foot live and 10 pounds per square foot dead.
| Minimum Solid Beam Sizes – 40 psf Live, 10 psf Dead Pressure Treated H/fir #2 or better (group x Douglas Fir & S. Pine) | ||
|---|---|---|
| Span of Joists | In feet, there is a space between the posts. | |
| 11 ft | 4×6 | 4×10 |
| 12 ft | 4×8 | 4×10 |
| 13 ft | 6×10 | 6×12 |
How much weight can a 2×6 vertically support?
The kind of load will also influence how much weight a 2×6 can support on its edge. A 2×4 timber, for example, can easily carry a 4-cylinder engine but not a larger one. A 2×6 on the other hand, can sustain a V8 engine weighing between 600 and 700 pounds.
In residential building, what is the size of floor joists?
This chart shows that there are options for floor joist size (2 X 6, 2 X 8, 2 X 10, or 2 X 12) and joist spacing (2 X 6, 2 X 8, 2 X 10, or 2 X 12). (12″, 16″ or 14″). The distance between the centers of any two installed joists is the floor joist spacing.
To span 10 feet, what size beam do I need?
When supporting joists that span 12 feet with no overhang beyond the beam, a double ply beam can span in feet a value equal to its depth in inches. A double 2×12 beam may span 12 feet, while a (2) 2×10 beam can span 10 feet, and so on.
How far will a 12 inch I Span of Joists?
Alternatively, you may go up to 17 feet, 9 inches at L/480 by utilizing 9-12-inch-deep joists placed at 12 inches on-center.
Is LVL more durable than wood?
In terms of structural strength, LSL is often rated lower than LVL, although it is still several times stronger than its dimensional equivalents. Glulam Beams are a popular engineered lumber because they are available in architectural grade, which is designed to be exposed and polished for a rustic or natural appearance.
