What size floor joist do I need for a 18 foot span

What size floor joist do I need for a 18 foot span

The size of floor joists needed for a 18-foot span depends on factors like the load they'll support and local building codes. In general, for a standard residential floor, you might consider using 2x10 joists spaced at 16 inches on center.

Floor joists are horizontal structural members that span an open space, often between beams, which subsequently transfer the load to vertical structural members. These joists, part of the floor system, carry the weight of everything inside a room, including walls, furniture, appliances, and even people.

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