Structural Flashcards
Deck Ledger should resist how many pounds of Lateral Load
3,000 lbs
What is the min thickness for Driveway, walkway and patios
3 1/3 inch
What is the most common Garage door operator?
1/2 HP
For Slate Shingle roof covering, what would the most appropriate fastener be
Copper Nails
What is the minimum height for a skylight curb is the roof slope is less than 3:12
4”
What would the most likely cause of a crack that varies between 3/8 inch at the floor to 1/4 inch wide 2 feet down from the wall top
Unstable soil under the footing
a 12 foot long 2x10 floor joist has a notch located 5 feet from the joist end. What is the max allowed notch depth?
0 inches, Cant notch any joist in the middle third of a joist or structural member. Page 6 in Code book
What is the most likely cause of a 1/2in wide gap between the drywall and ceiling? The gap opens in the winter and closes in the summer
Truss Uplift, (Spreading and contraction of the truss when the temperature in the attic changes.
To fix, use crown molding. Fix it to the ceiling only but not the wall
What is a service lateral electrical
When it does underground
What is the most likely cause of a melted insulation on a neutral conductor on a subpanel in a detached building
The neutral conductor is loose at the terminal bar
What is a service lateral electrical
When it does underground
What is the purpose of a foundation footing?
To distribute the weight of the structure evenly and prevent settling.
What is the typical spacing for floor joists in residential construction?
16 inches on center (O.C.), though some may be 12” or 24” O.C. depending on the span and load.
What is a lintel in masonry construction?
A horizontal support (often steel or concrete) over an opening like a window or door.
What are common signs of foundation failure?
Cracks in walls/floors, doors that don’t close properly, sloping floors, and gaps around windows.
What is the minimum clearance between combustibles and a single-wall stove pipe?
18 inches.
What is the maximum allowable gap between balusters on a residential guardrail?
Less than 4 inches to prevent small children from slipping through.
