Carpentry Flashcards
6 cards from real Other Skilled Trades practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Carpentry flashcards as text
What is the purpose of a vapor barrier in floor framing over a crawl space?
Answer: To prevent moisture from rising into the floor structure
A vapor barrier (typically 6-mil poly sheeting) is placed over the crawl space ground to prevent ground moisture from rising and damaging the floor framing.
What angle are interior door frames typically shimmed and plumbed to achieve?
Answer: Perfectly plumb at 90° to the floor
Door frames must be plumbed perfectly vertical (90° to the floor) so the door swings freely and latches properly without drifting open or closed.
In US residential construction, what is the maximum allowable span for a 2x10 floor joist at 16 OC using #2 Douglas Fir?
Answer: 17 feet
A 2x10 #2 Douglas Fir floor joist at 16 OC can span approximately 17 feet according to standard US span tables.
What tool is used to transfer a level line around all four walls of a room?
Answer: Laser level
A laser level projects a perfectly level beam around the room, allowing carpenters to mark a continuous reference line on all walls.
Which fastener is required when attaching a ledger board to a house rim joist for a deck?
Answer: Lag screws or through-bolts
Building codes require ledger boards to be attached with lag screws or through-bolts of appropriate size and spacing to safely transfer deck loads to the house structure.
What is the term for the horizontal distance a roof travels from the outside wall to the ridge?
Answer: Run
The run is the horizontal distance from the outside edge of the wall plate to directly beneath the ridge, equal to half the total span of the roof.