Safety Inspection of In-Service
Bridges: ALL Test One Questions and
All Correct Answers.
Dead Load, Primary Live Load, Secondary Live Load - Answer The three principal categories
of bridge loadings
dead load - Answer a static load due to the weight of the structure itself
dead load types - Answer Initial and Superimposed
Initial Dead Load - Answer Loads before concrete deck is hardened
Superimposed Dead Load - Answer Loads applied after concrete deck is hardened
Primary Live Load - Answer Moving Vehicular Loads
Standard Vehicular Loadings Used - Answer H20-44 (two axel) and HS20-44 (three axel)
Shear - Answer A force which results from equal but opposite transverse forces, which tend
to slide one section of a member pas an adjacent section
Axial Force - Answer A force that is a push or pull type force which acts in the long direction
of the member.
Torsion - Answer A force resulting from an external moment, which tends to rotate or twist a
member about its longitudinal axis
Moment - Answer A force developed when an external load applied transversely to a bridge
member causes its to bend.
Wind load on the structure is considered a primary live load. (T/F) - Answer False
Material toughness is not just related to strength. (T/F) - Answer True
Dead loads are considered full-time permanent loads (T/F) - Answer True
, Ductility - Answer the amount of elastic deformation a material undergoes prior to breaking
Strain is a gradual, continuing irreversible deformation due to constant stress level below yield
stress. (T/F) - Answer False
Reaction - Answer A force provided by a support that is equal but opposite to the force
transmitted from a member to its support
Composite - Answer Structure in which deck acts together with beams to resist the loads.
Cantilever - Answer A span with one end restrained against rotation and deflection and the
other end completely free
Internal Redundancy - Answer Bridge member contains several elements, which are
mechanically fastened together so that multiple load paths are formed.
Vehicles - Answer Primary Live Load
Concrete Deck - Answer Dead Load
Pedestrian Load - Answer Secondary Live Load
Ice Pressure - Answer Secondary Live Load
Parapets - Answer Dead Load
Stress - Answer Force per unit area and denotes the intensity of an internal force
Fatigue - Answer Material failure, which occurs at a stress level below the elastic limit and is
due to repetitive loading
Toughness - Answer Measure of the energy required to break a material
Shear is a force developed when an external load applied transversely to a bridge member
causes it to bend (T/F) - Answer False
Bridges: ALL Test One Questions and
All Correct Answers.
Dead Load, Primary Live Load, Secondary Live Load - Answer The three principal categories
of bridge loadings
dead load - Answer a static load due to the weight of the structure itself
dead load types - Answer Initial and Superimposed
Initial Dead Load - Answer Loads before concrete deck is hardened
Superimposed Dead Load - Answer Loads applied after concrete deck is hardened
Primary Live Load - Answer Moving Vehicular Loads
Standard Vehicular Loadings Used - Answer H20-44 (two axel) and HS20-44 (three axel)
Shear - Answer A force which results from equal but opposite transverse forces, which tend
to slide one section of a member pas an adjacent section
Axial Force - Answer A force that is a push or pull type force which acts in the long direction
of the member.
Torsion - Answer A force resulting from an external moment, which tends to rotate or twist a
member about its longitudinal axis
Moment - Answer A force developed when an external load applied transversely to a bridge
member causes its to bend.
Wind load on the structure is considered a primary live load. (T/F) - Answer False
Material toughness is not just related to strength. (T/F) - Answer True
Dead loads are considered full-time permanent loads (T/F) - Answer True
, Ductility - Answer the amount of elastic deformation a material undergoes prior to breaking
Strain is a gradual, continuing irreversible deformation due to constant stress level below yield
stress. (T/F) - Answer False
Reaction - Answer A force provided by a support that is equal but opposite to the force
transmitted from a member to its support
Composite - Answer Structure in which deck acts together with beams to resist the loads.
Cantilever - Answer A span with one end restrained against rotation and deflection and the
other end completely free
Internal Redundancy - Answer Bridge member contains several elements, which are
mechanically fastened together so that multiple load paths are formed.
Vehicles - Answer Primary Live Load
Concrete Deck - Answer Dead Load
Pedestrian Load - Answer Secondary Live Load
Ice Pressure - Answer Secondary Live Load
Parapets - Answer Dead Load
Stress - Answer Force per unit area and denotes the intensity of an internal force
Fatigue - Answer Material failure, which occurs at a stress level below the elastic limit and is
due to repetitive loading
Toughness - Answer Measure of the energy required to break a material
Shear is a force developed when an external load applied transversely to a bridge member
causes it to bend (T/F) - Answer False
