NHI SAFETY INSPECTION OF IN-SERVICE
BRIDGES FINAL EXAM QUESTIONS AND
CORRECT ANSWERS
Post-tensioning - CORRECT ANSWERS Prestressing steel passed through ducts and then
tensioned
Thermal expansion - CORRECT ANSWERS happens when temperature is increased and
decreased
Internal stresses - CORRECT ANSWERS Non-structural cracks are the result of...
delamination - CORRECT ANSWERS Type of deficiency that is caused by loss of concrete
bond with corroded rebar.
Crushing - CORRECT ANSWERS Concrete decks are to be checked over supports for cracks,
spalls, and...
Contamination of concrete decks - CORRECT ANSWERS Deteriorated and corroded stay-in-
place forms often indicate...
Broken welds - CORRECT ANSWERS Steel grid deck areas exposed to high traffic volumes
in the travel lanes can lead to...
Expansion due to corrosion - CORRECT ANSWERS Inspect concrete filled-grid steel decks
at joints and bridge ends for...
, Decay - CORRECT ANSWERS Timber deck areas exposed to drainage are to be inspected
for...
Fatigue - CORRECT ANSWERS Steel deficiency due to repeated variation of normal stress
with a tensile component
Flexure and Shear - CORRECT ANSWERS Two main types of structural cracks in concrete
Shear key joints - CORRECT ANSWERS Area in a precast concrete deck that is inspected for
leaking joints, cracks, or other signs of independent action
Bearings - CORRECT ANSWERS Part of the bridge that permits longitudinal expansion and
contraction
20 Percent - CORRECT ANSWERS Percentage of air required for fungi to become active in a
timber member
Team Leader - CORRECT ANSWERS Person responsible for the enforcement of safety
regulations and guidance in proper use of equipment.
Physical - CORRECT ANSWERS Primary method for determining steel remaining section or
section loss
ASR - CORRECT ANSWERS Not a type of corrosion in steel
Measuring tools - CORRECT ANSWERS Calipers, crack gauges, and electronic distance
meters
BRIDGES FINAL EXAM QUESTIONS AND
CORRECT ANSWERS
Post-tensioning - CORRECT ANSWERS Prestressing steel passed through ducts and then
tensioned
Thermal expansion - CORRECT ANSWERS happens when temperature is increased and
decreased
Internal stresses - CORRECT ANSWERS Non-structural cracks are the result of...
delamination - CORRECT ANSWERS Type of deficiency that is caused by loss of concrete
bond with corroded rebar.
Crushing - CORRECT ANSWERS Concrete decks are to be checked over supports for cracks,
spalls, and...
Contamination of concrete decks - CORRECT ANSWERS Deteriorated and corroded stay-in-
place forms often indicate...
Broken welds - CORRECT ANSWERS Steel grid deck areas exposed to high traffic volumes
in the travel lanes can lead to...
Expansion due to corrosion - CORRECT ANSWERS Inspect concrete filled-grid steel decks
at joints and bridge ends for...
, Decay - CORRECT ANSWERS Timber deck areas exposed to drainage are to be inspected
for...
Fatigue - CORRECT ANSWERS Steel deficiency due to repeated variation of normal stress
with a tensile component
Flexure and Shear - CORRECT ANSWERS Two main types of structural cracks in concrete
Shear key joints - CORRECT ANSWERS Area in a precast concrete deck that is inspected for
leaking joints, cracks, or other signs of independent action
Bearings - CORRECT ANSWERS Part of the bridge that permits longitudinal expansion and
contraction
20 Percent - CORRECT ANSWERS Percentage of air required for fungi to become active in a
timber member
Team Leader - CORRECT ANSWERS Person responsible for the enforcement of safety
regulations and guidance in proper use of equipment.
Physical - CORRECT ANSWERS Primary method for determining steel remaining section or
section loss
ASR - CORRECT ANSWERS Not a type of corrosion in steel
Measuring tools - CORRECT ANSWERS Calipers, crack gauges, and electronic distance
meters
