how far can a 2×6 span

The maximum span for a 2×6 beam depends on several factors, including:

  1. Load: The weight and type of load it will be supporting (e.g., roof, floor, wall).
  2. Grade: The type and quality of the lumber (e.g., #1, #2, or construction grade).
  3. Orientation: Whether the beam is installed horizontally (e.g., as a floor joist) or vertically (e.g., as a stud).
  4. Support: The type and spacing of supporting members (e.g., posts, footings).

Here are some general guidelines for maximum spans for 2×6 beams:

Floor Joists:

  • For a 2×6 floor joist, the maximum span is typically:

    • 12 feet (3.6 meters) for a 40 psf (pounds per square foot) live load and 10 psf dead load, with a 16-inch on-center spacing.
    • 10 feet (3 meters) for a 50 psf live load and 10 psf dead load, with a 16-inch on-center spacing.

Rafters:

  • For a 2×6 rafter, the maximum span is typically:

    • 14 feet (4.2 meters) for a 30 psf live load and 10 psf dead load, with a 16-inch on-center spacing.
    • 12 feet (3.6 meters) for a 40 psf live load and 10 psf dead load, with a 16-inch on-center spacing.

Headers:

  • For a 2×6 header, the maximum span is typically:

    • 6 feet (1.8 meters) for a 40 psf live load and 10 psf dead load, with a 16-inch on-center spacing.
    • 4 feet (1.2 meters) for a 50 psf live load and 10 psf dead load, with a 16-inch on-center spacing.

Please note that these are general guidelines and may not apply to your specific situation. It’s always best to consult with a structural engineer or a qualified building professional to determine the maximum span for a 2×6 beam in your specific application. They can assess the loads, materials, and other factors to provide a more accurate and safe design.

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