NHI SAFETY INSPECTION OF IN-SERVICE
BRIDGES EXAM QUESTIONS AND CORRECT
ANSWERS
Post tensioning - CORRECT ANSWERS Prestressing steel passed through ducts and then
tensioned is known as:
Thermal expansion - CORRECT ANSWERS This happens when the temperature increases
and decreases:
Non structural cracks are the result of - CORRECT ANSWERS Internal stresses
Delamination - CORRECT ANSWERS This type of deficiency is caused by loss of concrete
bond with corroded rebar
Decay - CORRECT ANSWERS Timber deck areas exposed to drainage are to be inspected
for
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
Tap testing - CORRECT ANSWERS Delamination of FRP Decks is to be checked near
supports using
, Corrosion - CORRECT ANSWERS Steel dick areas exposed to drainage can lead to
Corrosion - CORRECT ANSWERS Inspect concrete filled grid steel dicks at joint and bridge
ends for
Fatigue - CORRECT ANSWERS What steel deficiency is due to repeated loading at stress
levels below the elastic limit?
Torsional force - CORRECT ANSWERS Which of the following is the result of an external
moment that tends to Twist the member about its longitudinal axis?
Sheer key joints - CORRECT ANSWERS Which location in a precast concrete deck is
inspected by for leaking joints, cracks, or other signs of independent action?
Bearings - CORRECT ANSWERS Which bridge element permits longitudinal expansion and
contraction?
20 percent - CORRECT ANSWERS What percentage of oxygen is required for fungi to
become active in a Timber member?
Team leader - CORRECT ANSWERS Who is responsible for the enforcement of safety
regulations and guidance in proper use of equipment?
Physical - CORRECT ANSWERS What is the primary method when determining steel
remaining section or section loss?
Deformation - CORRECT ANSWERS Which of the following is best described as the local
distortion or change in shape of the material due to applied force?
BRIDGES EXAM QUESTIONS AND CORRECT
ANSWERS
Post tensioning - CORRECT ANSWERS Prestressing steel passed through ducts and then
tensioned is known as:
Thermal expansion - CORRECT ANSWERS This happens when the temperature increases
and decreases:
Non structural cracks are the result of - CORRECT ANSWERS Internal stresses
Delamination - CORRECT ANSWERS This type of deficiency is caused by loss of concrete
bond with corroded rebar
Decay - CORRECT ANSWERS Timber deck areas exposed to drainage are to be inspected
for
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
Tap testing - CORRECT ANSWERS Delamination of FRP Decks is to be checked near
supports using
, Corrosion - CORRECT ANSWERS Steel dick areas exposed to drainage can lead to
Corrosion - CORRECT ANSWERS Inspect concrete filled grid steel dicks at joint and bridge
ends for
Fatigue - CORRECT ANSWERS What steel deficiency is due to repeated loading at stress
levels below the elastic limit?
Torsional force - CORRECT ANSWERS Which of the following is the result of an external
moment that tends to Twist the member about its longitudinal axis?
Sheer key joints - CORRECT ANSWERS Which location in a precast concrete deck is
inspected by for leaking joints, cracks, or other signs of independent action?
Bearings - CORRECT ANSWERS Which bridge element permits longitudinal expansion and
contraction?
20 percent - CORRECT ANSWERS What percentage of oxygen is required for fungi to
become active in a Timber member?
Team leader - CORRECT ANSWERS Who is responsible for the enforcement of safety
regulations and guidance in proper use of equipment?
Physical - CORRECT ANSWERS What is the primary method when determining steel
remaining section or section loss?
Deformation - CORRECT ANSWERS Which of the following is best described as the local
distortion or change in shape of the material due to applied force?
