Home Inspector Test Home Inspector Structural Framing Defects 2 — Questions and Answers
Question 1: A home inspector notices that multiple floor joists have been notched at mid-span to accommodate plumbing pipes. What is the primary structural concern?
- Mid-span notching significantly reduces the joist's bending strength (Correct answer)
- Notching only affects fire resistance ratings
- Notching at mid-span is acceptable if pipes are properly insulated
- The concern is purely aesthetic with no structural implication
Correct answer: Mid-span notching significantly reduces the joist's bending strength
Notching floor joists at mid-span removes material from the highest-stress zone, drastically reducing their load-carrying capacity.
Question 2: During an inspection, a home inspector observes that a load-bearing wall has been removed and a beam installed, but the beam appears undersized. Which symptom would MOST likely indicate the beam is inadequate?
- Visible sag or deflection in the floor or ceiling above (Correct answer)
- Slight paint cracking along the ceiling line
- Squeaky floors near the former wall location
- Minor drywall nail pops in adjacent rooms
Correct answer: Visible sag or deflection in the floor or ceiling above
Visible sag or excessive deflection directly above the beam indicates it cannot adequately support the transferred load.
Question 3: A home inspector finds that roof rafters are pulling away from the ridge board. What framing deficiency does this MOST likely indicate?
- Insufficient collar ties or rafter ties allowing outward thrust (Correct answer)
- Overloading of the ridge board from above
- Excessive attic insulation compressing the rafters
- Ridge board installed at the wrong elevation
Correct answer: Insufficient collar ties or rafter ties allowing outward thrust
Without adequate collar ties or rafter ties, horizontal outward thrust from roof loads causes rafters to spread and pull away from the ridge.
Question 4: What does the term 'cripple stud' refer to in wall framing?
- A short stud above or below a door or window opening (Correct answer)
- A stud that has been cut or damaged in the field
- A doubled stud used to carry extra loads
- A stud running diagonally for shear resistance
Correct answer: A short stud above or below a door or window opening
Cripple studs are short vertical members installed above window/door headers or below rough sills to fill framing between openings and top/bottom plates.
Question 5: A home inspector observes diagonal cracking emanating from the corners of window openings on an exterior wall. This pattern MOST commonly indicates:
- Differential foundation settlement causing wall racking (Correct answer)
- Normal shrinkage of framing lumber over time
- Improper window casing installation
- Excessive roof live loads transmitted to the wall
Correct answer: Differential foundation settlement causing wall racking
Diagonal cracks from window corners are a classic sign of differential foundation movement causing the wall framing to rack.
Question 6: When inspecting a crawl space, a home inspector finds that a girder beam is supported at mid-span by a 4x4 post sitting on a concrete block with no footing below. What is the MAIN concern?
- The concrete block may sink or shift, causing the girder to lose support (Correct answer)
- The 4x4 post is too large for the load it carries
- Concrete blocks are prohibited as post bases by all building codes
- The girder span is likely too short for the post to be necessary
Correct answer: The concrete block may sink or shift, causing the girder to lose support
A concrete block without a proper footing can settle or tip, causing the girder to lose bearing and resulting in structural sagging.
Question 7: A home inspector notices that ceiling joists in a garage are spliced over an interior wall with only a single 16d nail on each side. What is the structural concern?
- The splice lacks adequate connection to transfer tension and shear forces (Correct answer)
- Ceiling joists in garages should never be spliced regardless of nailing
- A single nail is only acceptable if joists are engineered lumber
- The concern is limited to fire-code compliance, not structural integrity
Correct answer: The splice lacks adequate connection to transfer tension and shear forces
A poorly nailed lap splice cannot reliably transfer the tension forces that keep rafters from spreading, which is the primary function of ceiling joists.
Home Inspector Test Home Inspector Structural Framing Defects 2
A home inspector notices that multiple floor joists have been notched at mid-span to accommodate plumbing pipes.
What is the primary structural concern?