Structural Systems & Components Flashcards
7 cards from real INTERNACHI practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Structural Systems & Components flashcards as text
What does a 'cathedral ceiling' configuration typically eliminate that affects roof structural design?
Answer: Attic space for a horizontal ceiling joist system
Cathedral ceilings remove the attic space, eliminating the horizontal ceiling joists that normally resist outward thrust from rafters, requiring alternative solutions like ridge beams or structural connectors.
Which type of foundation wall crack is most indicative of differential settlement?
Answer: Diagonal stair-step crack in a masonry block wall
Diagonal stair-step cracks in masonry block walls typically indicate differential settlement, where one section of the foundation is moving more than another.
What is the primary structural purpose of cross-bridging or blocking between floor joists?
Answer: To prevent lateral rotation and distribute loads between joists
Cross-bridging and blocking prevent lateral rotation (twisting) of floor joists and help distribute concentrated loads to adjacent joists.
A home inspector observes that a load-bearing wall has been removed and a header installed. What additional concern should be noted if no posts are visible at the header ends?
Answer: The load may not be transferred properly to the foundation without adequate bearing posts
Header loads must be transferred down to the foundation through bearing posts or columns; missing posts mean the load path is interrupted and the structure may be compromised.
Which condition in a wood-framed wall most significantly reduces its load-bearing capacity?
Answer: Large notches or holes cut in the middle third of studs
Large notches or holes cut into studs, especially near mid-height, dramatically reduce the stud's ability to carry vertical loads and resist buckling.
What is a 'bearing wall' as defined in residential construction?
Answer: A wall that supports the weight of floors, roofs, or other walls above it
A bearing wall supports structural loads from above, including floors, roofs, or other framing, and transfers those loads to the foundation.
When inspecting a crawl space, a home inspector notices that several support posts rest directly on the soil without footings. What is the primary concern?
Answer: Settlement and shifting of posts due to lack of proper load distribution to stable soil
Without footings, posts can sink unevenly into soil as loads are not distributed over an adequate bearing area, leading to structural settlement and potential failure.