Building Construction Identification
Final Test Review
(Questions & Solutions)
2025
1
,1. A light-commercial office built in 1975 uses exterior insulation and
finish system (EIFS) over wood studs. Moisture testing behind the
synthetic stucco shows elevated readings. Which layer must be
removed first to visually confirm water intrusion into the sheathing?
A. Finish coat
B. Reinforcing mesh and base coat
C. Insulation board
D. Water-resistive barrier
ANS: B
Rationale: The reinforcing mesh and base coat bond directly to
insulation board. Removing them exposes the insulation and
underlying barrier for visual inspection of moisture penetration.
2. In a 1940s residential building, walls are composed of three-coat
plaster on wood lath. During assessment, you suspect voids behind
the plaster due to delamination. Which non-destructive tool best
locates hidden cavities before cutting?
A. Infrared thermal imager
B. Capacitance moisture meter
C. Ultrasonic thickness gauge
D. Hammer and listening stick
ANS: A
Rationale: Infrared cameras detect temperature differentials at voids
and wet areas behind plaster without damaging finishes, guiding
targeted openings.
3. A restaurant tenant space features a suspended metal-stud
partition with gypsum board on both sides. Damage assessment
indicates water staining on ceilings but not on walls. Which structural
assembly is LEAST likely affected by water migration?
A. Bottom track at floor level
2
, B. Top track at ceiling grid
C. Corner bead seams
D. Stud flange connections
ANS: C
Rationale: Corner bead seams are at the wall plane and are typically
isolated from ceiling water intrusion. Tracks and flanges can wick
moisture along the stud cavity.
4. You inspect a 1960s commercial storefront with single-pane steel
frame windows set in a CMU wall. Which construction detail
indicates a high risk of water infiltration at the jamb?
A. Presence of a continuous head flashing
B. Weep holes at sill level
C. No sill pan or back-dam installed
D. Closed-cell spray foam insulation
ANS: C
Rationale: Absence of a sill pan or back-dam allows water to bypass
the frame into the wall cavity, causing hidden CMU and interior
damage.
5. A mid-rise multifamily building features poured-in-place concrete
floors with vinyl composition tile (VCT). Which test confirms whether
moisture is still migrating through the slab?
A. Calcium chloride test
B. Relative humidity probe
C. Surface‐point check with pin meter
D. pH testing on water extract
ANS: B
Rationale: In situ RH probes measure internal slab moisture
conditions directly, indicating ongoing vapor drive under finished
flooring.
3
Final Test Review
(Questions & Solutions)
2025
1
,1. A light-commercial office built in 1975 uses exterior insulation and
finish system (EIFS) over wood studs. Moisture testing behind the
synthetic stucco shows elevated readings. Which layer must be
removed first to visually confirm water intrusion into the sheathing?
A. Finish coat
B. Reinforcing mesh and base coat
C. Insulation board
D. Water-resistive barrier
ANS: B
Rationale: The reinforcing mesh and base coat bond directly to
insulation board. Removing them exposes the insulation and
underlying barrier for visual inspection of moisture penetration.
2. In a 1940s residential building, walls are composed of three-coat
plaster on wood lath. During assessment, you suspect voids behind
the plaster due to delamination. Which non-destructive tool best
locates hidden cavities before cutting?
A. Infrared thermal imager
B. Capacitance moisture meter
C. Ultrasonic thickness gauge
D. Hammer and listening stick
ANS: A
Rationale: Infrared cameras detect temperature differentials at voids
and wet areas behind plaster without damaging finishes, guiding
targeted openings.
3. A restaurant tenant space features a suspended metal-stud
partition with gypsum board on both sides. Damage assessment
indicates water staining on ceilings but not on walls. Which structural
assembly is LEAST likely affected by water migration?
A. Bottom track at floor level
2
, B. Top track at ceiling grid
C. Corner bead seams
D. Stud flange connections
ANS: C
Rationale: Corner bead seams are at the wall plane and are typically
isolated from ceiling water intrusion. Tracks and flanges can wick
moisture along the stud cavity.
4. You inspect a 1960s commercial storefront with single-pane steel
frame windows set in a CMU wall. Which construction detail
indicates a high risk of water infiltration at the jamb?
A. Presence of a continuous head flashing
B. Weep holes at sill level
C. No sill pan or back-dam installed
D. Closed-cell spray foam insulation
ANS: C
Rationale: Absence of a sill pan or back-dam allows water to bypass
the frame into the wall cavity, causing hidden CMU and interior
damage.
5. A mid-rise multifamily building features poured-in-place concrete
floors with vinyl composition tile (VCT). Which test confirms whether
moisture is still migrating through the slab?
A. Calcium chloride test
B. Relative humidity probe
C. Surface‐point check with pin meter
D. pH testing on water extract
ANS: B
Rationale: In situ RH probes measure internal slab moisture
conditions directly, indicating ongoing vapor drive under finished
flooring.
3
