Joist: meaning, definitions and examples

Commonly used in construction and building industries to refer specifically to a horizontal structural element that supports the load of a floor or ceiling. Often spans between beams or walls.

• The carpenter installed the joists for the second floor.
• We need to inspect the joists for any signs of wear and tear before renovating the ceiling.

A general term in construction referring to a long, sturdy piece of wood or metal that supports weight. Beams can be used horizontally or vertically in structures.

• The steel beams were crucial for supporting the new bridge.
• You can see the wooden beams when you look up at the ceiling of the old barn.

Specifically used in roofing to indicate the sloping structural elements that support the roof. Typically, rafters extend from the ridge or hip of the roof down to the wall plate.

• The rafters need to be reinforced to support the new roof tiles.
• While repairing the roof, we found that several rafters were damaged.

A horizontal structural member used in building construction to support floors or ceilings.

• The carpenters installed the joists to hold up the new floor.
• Make sure the joists are level before attaching the floorboards.

To bear the weight of something or provide assistance to maintain its position or function.

• The columns support the roof, preventing it from collapsing.
• He used a cane to support himself while walking.

To strengthen or support an object or structure, often by adding additional materials.

• We need to reinforce the walls to withstand the upcoming storm.
• The bridge was reinforced with steel beams for extra stability.