Why it matters
Unreinforced masonry has killed people in every major California earthquake. The code now requires reinforcement in all structural masonry. Old unreinforced masonry buildings must be retrofitted in many jurisdictions, and many already have been.
Reinforcement basics
Vertical bars go in grouted cells, typically at corners, openings, and at 4-foot maximum spacing. Horizontal bond beams go at the top of walls and above and below openings. Use the correct cover, splice length, and grout pump pressure.
Veneer anchorage
Brick or stone veneer over wood framing must be anchored with corrugated metal ties spaced no more than 24 inches horizontally and 16 inches vertically. Provide a one-inch air gap and weep holes at the base for drainage.
Mini-quiz
Attempt 1 · 3 questions
Check your understanding. Passing is 70% — but you can keep going to the next lesson either way.
Question 1
Based on "Why it matters", which statement is correct?
Question 2
Based on "Reinforcement basics", which statement is correct?
Question 3
Based on "Veneer anchorage", which statement is correct?