40 Hour Property and Building Inspection Practice Test

What is the maximum spacing allowed for rafter ties?

1. 6 ft on center

2. 4 ft on center

3. 2 ft on center

4. 8 ft on center

The correct answer is: 4 ft on center

Rafter ties are an essential component in roof construction, as they help to prevent the roof from sagging and ensuring structural integrity. The maximum spacing allowed for rafter ties is 4 feet on center. This measurement is based on typical building codes that require rafter ties to be installed at specified intervals to effectively manage the lateral loads that may be imposed on the roof structure due to wind, snow, or other forces. When rafter ties are placed too far apart, it can result in inadequate support of the roof system, leading to potential structural failures or sagging over time. By maintaining the 4-foot spacing, builders can ensure that the ties effectively brace the rafters and help distribute loads evenly across the structure. Other spacing options, such as 2 feet, 6 feet, or 8 feet on center, do not meet the standard requirements, either resulting in excessive load on the ties or not providing sufficient support. Therefore, adhering to a maximum spacing of 4 feet on center for rafter ties is critical for maintaining the safety and stability of a building's roof.