NHI UW Inspection Questions and All
Correct Answers.
Max Interval between above water inspections - Answer 24 Mo
Team leaders are required to have - Answer FHWA approved comprehensive bridge
inspection course
A bridge is defined as - Answer A structure carrying traffic and having a clear span of 20+ ft
Two types of bridge inspections by NBIS are - Answer Routine and Special inspections
FHWA routine underwater inspections require - Answer 100% Level I inspections
Necessary for the galvanic corrosion process - Answer Electric current, electrolytes, and
oxygen
Erosive action of flowing water excavating soil in CBs and around SSUs - Answer Scour
Two methods of reporting bridge inspection results - Answer Element level and NBI
condition rating methods
Material characteristic to deform under constant load intensity is - Answer Creep
Wading is acceptable in - Answer <3' of water
Underwater acoustic imaging includes - Answer Scanning sonar
Cleaning bands at WL mudline amd mid depth on piles and piers are - Answer Level II
inspection
Teredo attack produces - Answer Internal voids
Concrete spauling is associated with - Answer Rebar corrosion
JHA should always - Answer Be complete before a job
, What if an NBI Item 113 is rated U - Answer Develop a POA
Below footing and structural when piles aren't present - Answer Seals
SSU has a Monolithic footing - Answer Piers
Structural safety of a bridge must be determined with - Answer Certainty
Three advantages of SCUBA - Answer Maneuverable, light weight, no elaborate support ops
Limitations if scuba - Answer Limited air, max depth 130, 3 person team min
5 inspection techniques in lieu of diving - Answer Rov, Sonar, fathometer, multibeam, evid,
ground penetration radar
Types of inspections - Answer Initial, routine, special, fracture critical, in depth, underwater,
damage
UW routine inspections require - Answer 100% level I, 10% level II, and scour inspection
Four factors that influence UW inspection recommendations - Answer Age, scour
susceptibility, configuration, and location
4 types of NBIS UW inspections - Answer Initial, routine, in depth, damage
When must mult. Culverts be inspected as a bridge - Answer Clearspan is 20'
3 types of loads bridges are subject to - Answer Dead live and secondary
Purpose of a seal - Answer Seal bottom of a cofferdam
3 uw inspection techniques - Answer Wading diving advanced tech
Does NBIS have dive safety regs - Answer No
Correct Answers.
Max Interval between above water inspections - Answer 24 Mo
Team leaders are required to have - Answer FHWA approved comprehensive bridge
inspection course
A bridge is defined as - Answer A structure carrying traffic and having a clear span of 20+ ft
Two types of bridge inspections by NBIS are - Answer Routine and Special inspections
FHWA routine underwater inspections require - Answer 100% Level I inspections
Necessary for the galvanic corrosion process - Answer Electric current, electrolytes, and
oxygen
Erosive action of flowing water excavating soil in CBs and around SSUs - Answer Scour
Two methods of reporting bridge inspection results - Answer Element level and NBI
condition rating methods
Material characteristic to deform under constant load intensity is - Answer Creep
Wading is acceptable in - Answer <3' of water
Underwater acoustic imaging includes - Answer Scanning sonar
Cleaning bands at WL mudline amd mid depth on piles and piers are - Answer Level II
inspection
Teredo attack produces - Answer Internal voids
Concrete spauling is associated with - Answer Rebar corrosion
JHA should always - Answer Be complete before a job
, What if an NBI Item 113 is rated U - Answer Develop a POA
Below footing and structural when piles aren't present - Answer Seals
SSU has a Monolithic footing - Answer Piers
Structural safety of a bridge must be determined with - Answer Certainty
Three advantages of SCUBA - Answer Maneuverable, light weight, no elaborate support ops
Limitations if scuba - Answer Limited air, max depth 130, 3 person team min
5 inspection techniques in lieu of diving - Answer Rov, Sonar, fathometer, multibeam, evid,
ground penetration radar
Types of inspections - Answer Initial, routine, special, fracture critical, in depth, underwater,
damage
UW routine inspections require - Answer 100% level I, 10% level II, and scour inspection
Four factors that influence UW inspection recommendations - Answer Age, scour
susceptibility, configuration, and location
4 types of NBIS UW inspections - Answer Initial, routine, in depth, damage
When must mult. Culverts be inspected as a bridge - Answer Clearspan is 20'
3 types of loads bridges are subject to - Answer Dead live and secondary
Purpose of a seal - Answer Seal bottom of a cofferdam
3 uw inspection techniques - Answer Wading diving advanced tech
Does NBIS have dive safety regs - Answer No
