The maximum spacing for anchor bolts in sills is:

The correct answer is based on the standard requirements for spacing anchor bolts in sill plates as outlined in the building codes. For sill plates, the maximum spacing of anchor bolts is indeed 6 feet on center, which helps ensure adequate anchorage to the foundation. Additionally, placing anchor bolts within 12 inches of the ends of the sill plate provides stability and helps resist lateral forces, thus enhancing the overall structural integrity of the frame.

This requirement is crucial for preventing potential movement or failure of the sill plate during seismic activity or high winds, common concerns in California's earthquake-prone regions. Properly spaced anchor bolts help distribute the load effectively and ensure that the wood framing remains securely connected to the foundation throughout the lifespan of the structure.

Understanding this spacing requirement is essential for compliance with local building codes and for ensuring safety in construction practices.