Framing & StructuralQuestion 398 of 700
For exterior wood decks, which material designation BEST indicates lumber suitable for the wet, ground-contact exposure of deck posts set near grade?
a.Preservative-treated lumber rated for ground contact
b.Kiln-dried interior-grade lumber
c.Untreated standard framing lumber
d.Finger-jointed trim stock
Explanation
Deck posts near grade require preservative-treated lumber rated for ground contact to resist decay and insects. Kiln-dried interior lumber, untreated framing lumber, and finger-jointed trim are all unsuited to sustained moisture and will deteriorate.
Law Reference: 2025 CA Residential Code §R507.2Practice all 700 questions free — no signup required.
Related questions on this topic
- When installing horizontal lap siding, which practice BEST manages moisture behind the cladding?
- A stair must rise a total of 108 inches from finished floor to finished floor. If each riser is designed at 7.2 inches, how many risers are required?
- When a plumbing or mechanical run requires boring holes in load-bearing wall studs, the code limits bored hole diameter to no more than what fraction of the stud depth for a bearing wall?
- In a braced wall line using wood structural panel sheathing, which nailing change MOST directly increases the shear capacity of the wall?
- A common rafter has a horizontal run of 10 feet and a rise of 5 feet. What is the roof slope expressed as unit rise per 12 units of run?
- In conventional roof framing with rafters bearing on exterior walls, what is the PRIMARY purpose of ceiling joists or an equivalent tie connecting opposing rafters?
Last reviewed: · editorial process
PrepPass Editorial Team · Verified against California CSLB General Building (B) Trade Examination · How we review