In the garage conversion file, a shear wall edge is 120 inches long with nails at 4 inches on center. How many nail spaces are along that edge?
Correct Answer
A) 30 spaces.
Nail spaces equal 120 / 4 = 30 spaces along the edge.
Why This Is the Correct Answer
Nail spaces equal 120 / 4 = 30 spaces along the edge.
Why the Other Options Are Wrong
Option B: 24 spaces total.
24 spaces total. is below the supported result for shear wall fastening calculation; it likely omits allowance, conversion, coverage, or final round-up.
Option C: 31 spaces total.
31 spaces total. is above the supported result for shear wall fastening calculation; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Option D: 40 spaces total.
40 spaces total. is above the supported result for shear wall fastening calculation; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Memory Technique
Measure to nail, adjust for controlling, then let Checking Edge-Nailing set the finish line.
Reference Hint
Study anchor (closed-book): memorize Shear wall fastening calculation from California Building Code, California Code of Regulations Title 24. / Title 24 California Building Code shear wall nailing concepts; know the rule or calculation trigger without relying on exam-room lookup.
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