Core TradesQuestion 7 of 700
A No. 5 reinforcing bar has a nominal diameter of 5/8 inch. If the specified tension lap splice is 40 bar diameters, what is the MINIMUM lap length?
a.About 15 inches
b.About 20 inches
c.About 25 inches
d.About 30 inches
Explanation
Lap = 40 x 5/8 in = 40 x 0.625 = 25 inches. Using 24 or 32 bar diameters would give 15 or 20 inches, and 48 diameters would give 30 inches, so only 25 inches matches the 40-diameter requirement.
Law Reference: 2025 CA Building Code (CBC) Chapter 19 (Concrete)Practice all 700 questions free — no signup required.
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