What is the maximum spacing allowed for anchor bolts on center?

The correct choice indicates that the maximum spacing allowed for anchor bolts on center is 4 feet. This requirement is based on construction standards and practices aimed at ensuring structural integrity and load distribution. Proper spacing of anchor bolts is crucial as it supports the load carried by masonry walls and helps maintain their stability.

If the spacing were too wide, there could be a risk of uneven load distribution, which may lead to structural failure or movement over time. The specified maximum of 4 feet helps to mitigate these risks by ensuring that the masonry elements are adequately secured, allowing for effective transfer of loads into the foundation below. This guideline reflects industry standards that prioritize safety and durability in construction practices.