Floor joists can span up to 14 feet if they are not cantilevered and end with a support on either end with 16″ spacing. You can span 11′ 5″ with one 2×10 Joist, which is 24 inches apart from each other.
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Are 2×10 good for floor joist?
It is common to find 2x10s in floor joists and roof rafters for construction projects. In residential construction, 2x10s are still the most commonly used floor joists because they are the most cost-effective per-unit option available today.
Can a 2×10 span 16 feet?
The distance between adjacent 2×10 joists and the species of wood determine the length of a 2×10 joist span. To span 16 feet and 1 inch without any support, you would need to use a southern yellow pine joist that is 2×10. A 4′ wide deck can be supported by a doubled 210 beam, which has a span of 11′.
Can a 2×10 span 15 feet?
Joists graded “Structural Select” allow joist spans of up to 21 feet for a live load of 30 pounds per square foot when spaced 12 inches apart, 19 feet 1 inch for 16 inch spacing, and 16 feet 8 inches for 24 inch spacing when using Douglas fir 2-by-10 joists, respectively.