Light Frame Construction Flashcards
What is the primary focus of the ARE exam in terms of building type?
Mid-range commercial and institutional structures.
Why is two-by-six framing preferred over two-by-four in some cases?
Greater structural strength and increased insulation (R-value).
What are platform frame construction elements?
Sole plate, rim joist, joist, sill plate, subfloor, double top plate.
What is the purpose of a bird’s mouth cut in rafters?
To allow rafters to sit properly on top plates at the correct angle.
What is the difference between a ridge board and a ridge beam?
A ridge board provides alignment; a ridge beam carries structural load and requires columns.
Why is a cold roof important?
Prevents ice damming by maintaining uniform roof temperature.
What is the function of soffit and ridge vents?
To allow air circulation and maintain cold roof conditions.
What is a TJI joist?
An engineered wood joist made of OSB web and wood flanges, allowing long spans and flexibility.
What is a floor truss and why is it used?
A triangular wood assembly allowing ductwork and long spans with less deflection.
What is a scissor truss?
A truss that creates a vaulted ceiling while maintaining structural benefits.
What is the typical configuration for a framed window opening?
King stud, jack stud, header, sill, and cripple studs.
What is a flitch plate?
A composite of steel and wood for added structural strength in headers.
Why are insulated headers beneficial?
They reduce thermal bridging and improve energy efficiency.
What is a key challenge of timber framing?
Structural rigidity due to fewer members and large spans.
How are timber connections typically reinforced?
With steel plates, bolts, or wood pegs for moment or brace connections.
What is a purlin in timber construction?
A horizontal member used to support exterior finishes between large spans.
What are stress skin panels?
Panels with OSB/plywood faces and foam core that provide insulation and structure.
How do stress skin panels benefit timber construction?
They span long distances and insulate while protecting internal structure.
What is a tensile structure?
A system using cables/fabric that requires strong anchors to resist pulling forces.
What is a pneumatic structure?
A structure supported by air pressure with fabric held in place by tensioned cables.
What is a common trait of light structural systems like tensile or pneumatic?
They require massive anchor systems or foundations to work.
