Question

What is the function of collar ties?

A. To support the attic floor and ceiling in the rooms below.
B. To support the roof sheathing.
C. To prevent the roof rafters from sagging and spreading.
D. To transmit the roof load to bearing walls.

Answer 1

Collar ties are horizontal beams or boards that prevent roof rafters from sagging and spreading. They help distribute the weight of the roof and maintain its stability.

Step-by-step explanation:

Collar ties are horizontal beams or boards that are installed between the rafters of a roof. They serve the function of preventing the roof rafters from sagging and spreading apart.

By connecting opposing rafters near the ridge line, collar ties help to distribute the weight of the roof and keep it stable. This is particularly important in areas with high wind loads or heavy snowfall, as it helps to prevent the roof from collapsing under the weight of these forces.

Overall, collar ties play a crucial role in the structural integrity of a roof and help to ensure its long-term stability.