Final answer:
Hollow masonry piers need to be capped with 4 inches of solid masonry or concrete to provide a strong and stable support and distribute the load evenly.
Step-by-step explanation:
Hollow masonry piers shall be capped with 4 inches of solid masonry or concrete or a masonry cap block. This standard is a building requirement to ensure structural integrity and distribute loads evenly across the pier. The cap serves as a protective layer and helps to transfer loads from what it supports, such as beams or arches, down through the piers. The use of solid masonry or concrete for the capping ensures that the cap is sturdy and capable of bearing the weight placed upon it without issue.