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How far can a 2×10 ceiling joist span without support

How far can a 2×10 ceiling joist span without support | 2×10 ceiling joist span chart

There are different species of 2×10 lumber of grade -1 and grade -2 are used as ceiling joist like Hem Fir (HF), Spruce pine fir (SPF), Douglas fir & larch (DFL) and Southern yellow pine (SYP). This article describe about how far can a 2×10 ceiling joist span without support and 2×10 ceiling joist span chart.

There are different depth of ceiling joist are used in floor construction such as 2×4, 2×6, 2×8 and 2×10 made of different species of wood (southern yellow pine & Douglas fir) and different grade such as grade – 1, grade – 2, grade – 3. Southern yellow pine is strongest species of wood that can span more distance compared to other species of wood. Grade 1 lumber have higher strength than other grade Lumber due to fewer knots.

How far can a 2×10 ceiling joist span without support
How far can a 2×10 ceiling joist span without support

Ceiling joists provide support for more than one surface in your home. The first surface is, unsurprisingly, the ceiling, the materials of which attach directly to the joists. The other surfaces are the walls, which the joists span the distance between, providing a source of support to keep the walls from shifting.

Ceiling Joists are technically beams that typically spans relatively short distances compared to beams and are made of wood, steel, or engineered wood or lumber. How far can a 2×4, 2×6, 2×8 and 2×10 ceiling joist span depending on different size of Lumber, species of wood, grade of wood, spacing between the joist, expected dead and live load of structure that coming to joist.

Spacing between ceiling joist for different sizes are kept at 12 inches, 16 inches and 24 inches apart. The joist which are kept at lower spacing can allow longer distance to span as compared to joist spaced further apart. Standard spacing between floors joist is 16 inches.

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How far can a 2×10 ceiling joist span without support

How far apart ceiling joist can maximum span will depend on load condition, slope, wood species, grade of lumber, climatic condition, locality where you live, building codes and design of structure.

Depending on various factors, a 2×10 Southern yellow pine (SYP) grade #1 ceiling joist can span a maximum of 30 feet and 5 inches far apart from beam to beam at 16″ spacing, or 33′- 5” at 12” spacing, or 26′-6″ at 24″ spacing without support with a maximum ceiling loads are assumed to be 15psf.

A 2×10 Southern yellow pine (SYP) grade #2 ceiling joist can span a maximum of 29 feet and 5 inches far apart from beam to beam at 16″ spacing, or 32′- 9” at 12” spacing, or 23′-11″ at 24″ spacing without support with a maximum ceiling loads are assumed to be 15psf.

A 2×10 Douglas fir& larch (DFL) grade #1 ceiling joist can span a maximum of 30 feet and 1 inches far apart from beam to beam at 16″ spacing, or 33′- 5” at 12” spacing, or 24′-6″ at 24″ spacing without support with a maximum ceiling loads are assumed to be 15psf.

A 2×10 Douglas fir& larch (DFL) grade #2 ceiling joist can span a maximum of 28 feet and 2 inches far apart from beam to beam at 16″ spacing, or 32′- 5” at 12” spacing, or 22′-11″ at 24″ spacing without support with a maximum ceiling loads are assumed to be 15psf.

A 2×10 Spruce pine fir (SPF) grade #1 ceiling joist can span a maximum of 28 feet and 2 inches far apart from beam to beam at 16″ spacing, or 31′- 4” at 12” spacing, or 22′-11″ at 24″ spacing without support with a maximum ceiling loads are assumed to be 15psf.

A 2×10 Spruce pine fir (SPF) grade #2 ceiling joist can span a maximum of 28 feet and 2 inches far apart from beam to beam at 16″ spacing, or 31′- 4” at 12” spacing, or 22′-11″ at 24″ spacing without support with a maximum ceiling loads are assumed to be 15psf.

A 2×10 Hem fir (HF) grade #1 ceiling joist can span a maximum of 29 feet and 2 inches far apart from beam to beam at 16″ spacing, or 32′- 1” at 12” spacing, or 23’-11″ at 24″ spacing without support with a maximum ceiling loads are assumed to be 15psf.

A 2×10 Hem fir (HF) grade #2 ceiling joist can span a maximum of 27 feet and 8 inches far apart from beam to beam at 16″ spacing, or 30′- 7” at 12” spacing, or 22′-7″ at 24″ spacing without support with a maximum ceiling loads are assumed to be 15psf.

How far can a 2×8 ceiling joist span without support

How far can a 2×6 ceiling joist span without support

How far can a 2×4 ceiling joist span without support

How far can a 2×10 ceiling joist span without support

What is the maximum span of a 2×8 floor joist?

What is the maximum span of a 2×10 floor joist?

Conclusions:-
A 2×10 Southern yellow pine (SYP) grade #2 ceiling joist can span a maximum of 29 feet and 5 inches far apart from beam to beam at 16″ spacing. For the same size joist, grade and spacing, SPF can allow to maximum span of 28′-2″.

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