A roof valley is shingled without the specified underlayment and flashing detail. What is the main concern?
Correct Answer
C) Water control.
Roof valleys concentrate drainage and need the specified flashing and underlayment for water control.
Why This Is the Correct Answer
Roof valleys concentrate drainage and need the specified flashing and underlayment for water control.
Why the Other Options Are Wrong
Option A: Thermal gap.
Thermal gap. relies on the wrong note, symbol, sheet, scale, or detail path for roof flashing.
Option B: Valley flashing.
Valley flashing. relies on the wrong note, symbol, sheet, scale, or detail path for roof flashing.
Option D: Weather exposure.
Weather exposure. relies on the wrong note, symbol, sheet, scale, or detail path for roof flashing.
Memory Technique
Roof Flashing trail for Inspecting Dry-In: note to schedule to detail, then field action.
Reference Hint
Study anchor (closed-book): memorize Roof flashing from California Building Code, California Code of Regulations Title 24. / Title 24 California Building Code roof flashing and underlayment concepts; know the rule or calculation trigger without relying on exam-room lookup.
More Class B Trade Questions
A 2-inch horizontal sanitary branch must be installed at 1/4 inch fall per foot. What total fall is needed over a 24-foot run?
A 4-inch building drain is laid out with a required 1/8 inch fall per foot. What fall is required across 40 feet?
A rooftop unit schedule shows 3 tons of cooling. Using 12,000 Btu per hour per ton, what cooling capacity is this?
A pump motor is listed as 2 horsepower, and the coordination table asks for watts. Using 746 watts per horsepower, what is the approximate motor power?
A slab is 30 feet long, 18 feet wide, and 4 inches thick. How many cubic yards of concrete are needed before waste?
A footing is 80 feet long, 2 feet wide, and 12 inches deep. How many cubic yards of concrete are required before waste?
A patio subgrade must drain at 2 percent away from the building for 20 feet. What total drop is required?
A building pad needs 150 compacted cubic yards of fill. If the borrow material shrinks 10 percent after compaction, about how many loose cubic yards should be hauled in?
A roofing estimate shows 2,850 square feet of roof area. How many roofing squares is that?
A waterproof deck surface is 14 feet deep and must slope 1/4 inch per foot to the drain. What vertical fall is needed?