NHI Safety Inspection of In-Service Bridges FINAL EXAM
Questions With Complete Solutions
Clacking |- |CORRECT |ANSWER✔✔-the |sound |of |delaminated |concrete
Pinging |- |CORRECT |ANSWER✔✔-the |sound |of |"sound" |concrete
Where |are |shear |key |joints? |- |CORRECT |ANSWER✔✔-between |pre-cast |deck |panels
Where |can |you |find |anchorage |zones? |- |CORRECT |ANSWER✔✔-precast |deck |tie |rods
flexure |cracks |are |primarily |what |direction |compared |to |the |primary |reinforcement? |- |
CORRECT |ANSWER✔✔-perpendicular
Main |inspection |area |for |FRP |bridges? |- |CORRECT |ANSWER✔✔-Joints
Assembly |joint |without |seal- |sliding |plate |- |CORRECT |ANSWER✔✔-two |steel |plates |sliding |on |
top |of |one |another |with |maximum |movement |of |4 |inches
Compression |joint |seal |- |CORRECT |ANSWER✔✔-rectangle |of |neoprene |with |a |honeycomb |
cross |section. |Can |handle |movement |of |2 |inches
pourable |joint |seal |- |CORRECT |ANSWER✔✔-made |of |three |materials |(backing |material, |joint |
filler, |and |a |poured |joint |sealant) |and |can |only |accommodate |movement |of |1/4 |inch. |Used |on |
short |spans
,strip |seal |expansion |joint |- |CORRECT |ANSWER✔✔-two |slotted |steel |anchorages |cast |into |a |
deck |or |back |wall. |A |neoprene |seal |fits |into |the |grooves |to |span |the |joint. |max |movement |of |4
|inches
Cellular |joint |seal |- |CORRECT |ANSWER✔✔-different |than |compression |because |of |material |
used |to |close |joint. |Made |up |of |closed-cell |foam |that |allows |the |joint |to |move |in |different |
directions. |Allows |for |both |parallel |and |perpendicular |joint |movement
Assembly |joint |with |seal- |plank |- |CORRECT |ANSWER✔✔-steel |reinforced |neoprene |that |
supports |vehicular |loads |over |the |joint |and |allow |for |movement |up |to |4 |inches
Assembly |joint |with |seal- |sheet |- |CORRECT |ANSWER✔✔-two |blocks |of |steel |reinforced |
neoprene. |thin |sheet |of |neoprene |spans |the |joint |and |connects |the |two |blocks. |Allows |for |up |
to |4 |inches
open |expansion |joint |- |CORRECT |ANSWER✔✔-gap |between |the |bridge |deck |and |the |back |wall
|of |the |abutment |or |adjacent |deck |section. |usually |found |on |short |span |bridges, |usually |
unprotected
Assembly |joint |without |seal- |finger |plate |- |CORRECT |ANSWER✔✔-tooth |plate |joint, |two |steel |
plates |that |have |interlocking |fingers. |usually |on |longer |spans. |can |accommodate |movement |
from |4 |to |24 |inches
drainage |system |- |CORRECT |ANSWER✔✔-move |water |away |from |specific |locations |(to |protect |
the |bridge)
grade |and |cross |slope |- |CORRECT |ANSWER✔✔-directs |the |runoff |to |the |inlets |and |helps |
eliminate |or |reduce |ponding
inlets |- |CORRECT |ANSWER✔✔-receives |water
, outlet |pipes |- |CORRECT |ANSWER✔✔-leads |water |away |from |the |drain
downspout |pipes |- |CORRECT |ANSWER✔✔-directs |deck |drainage |from |outlet |pipe
cleanout |plugs |- |CORRECT |ANSWER✔✔-removable |plug |in |piping |system |that |allows |access |for
|cleaning |downspout |pipes
drainage |troughs |- |CORRECT |ANSWER✔✔-located |under |open |joints |to |divert |runoff |away |
from |components
scupper |- |CORRECT |ANSWER✔✔-inlet |on |a |bridge |that |receives |water, |with |grate |or |
perforated |cover |to |keep |out |large |debris
Deck |Drains |- |CORRECT |ANSWER✔✔-open |holes |or |embedded |tubes |similar |to |scuppers
downspout |- |CORRECT |ANSWER✔✔-directs |drainage |to |nearby |storm |drain
weep |holes |- |CORRECT |ANSWER✔✔-small |drainage |holes |found |in |abutment |stems |and |
retaining |walls |which |allow |water |to |drain |from |behind |abutment
underdrains |- |CORRECT |ANSWER✔✔-perforated |pipes |routed |along |back |face |of |the |abutment
|and |channeled |to |a |nearby |waterway |or |storm |water |drainage |system
aerial |obstruction |lighting |- |CORRECT |ANSWER✔✔-used |to |alert |aircraft |that |a |hazard |exists |
below
navigation |lighting |- |CORRECT |ANSWER✔✔-used |to |safe |control |a |waterway
Questions With Complete Solutions
Clacking |- |CORRECT |ANSWER✔✔-the |sound |of |delaminated |concrete
Pinging |- |CORRECT |ANSWER✔✔-the |sound |of |"sound" |concrete
Where |are |shear |key |joints? |- |CORRECT |ANSWER✔✔-between |pre-cast |deck |panels
Where |can |you |find |anchorage |zones? |- |CORRECT |ANSWER✔✔-precast |deck |tie |rods
flexure |cracks |are |primarily |what |direction |compared |to |the |primary |reinforcement? |- |
CORRECT |ANSWER✔✔-perpendicular
Main |inspection |area |for |FRP |bridges? |- |CORRECT |ANSWER✔✔-Joints
Assembly |joint |without |seal- |sliding |plate |- |CORRECT |ANSWER✔✔-two |steel |plates |sliding |on |
top |of |one |another |with |maximum |movement |of |4 |inches
Compression |joint |seal |- |CORRECT |ANSWER✔✔-rectangle |of |neoprene |with |a |honeycomb |
cross |section. |Can |handle |movement |of |2 |inches
pourable |joint |seal |- |CORRECT |ANSWER✔✔-made |of |three |materials |(backing |material, |joint |
filler, |and |a |poured |joint |sealant) |and |can |only |accommodate |movement |of |1/4 |inch. |Used |on |
short |spans
,strip |seal |expansion |joint |- |CORRECT |ANSWER✔✔-two |slotted |steel |anchorages |cast |into |a |
deck |or |back |wall. |A |neoprene |seal |fits |into |the |grooves |to |span |the |joint. |max |movement |of |4
|inches
Cellular |joint |seal |- |CORRECT |ANSWER✔✔-different |than |compression |because |of |material |
used |to |close |joint. |Made |up |of |closed-cell |foam |that |allows |the |joint |to |move |in |different |
directions. |Allows |for |both |parallel |and |perpendicular |joint |movement
Assembly |joint |with |seal- |plank |- |CORRECT |ANSWER✔✔-steel |reinforced |neoprene |that |
supports |vehicular |loads |over |the |joint |and |allow |for |movement |up |to |4 |inches
Assembly |joint |with |seal- |sheet |- |CORRECT |ANSWER✔✔-two |blocks |of |steel |reinforced |
neoprene. |thin |sheet |of |neoprene |spans |the |joint |and |connects |the |two |blocks. |Allows |for |up |
to |4 |inches
open |expansion |joint |- |CORRECT |ANSWER✔✔-gap |between |the |bridge |deck |and |the |back |wall
|of |the |abutment |or |adjacent |deck |section. |usually |found |on |short |span |bridges, |usually |
unprotected
Assembly |joint |without |seal- |finger |plate |- |CORRECT |ANSWER✔✔-tooth |plate |joint, |two |steel |
plates |that |have |interlocking |fingers. |usually |on |longer |spans. |can |accommodate |movement |
from |4 |to |24 |inches
drainage |system |- |CORRECT |ANSWER✔✔-move |water |away |from |specific |locations |(to |protect |
the |bridge)
grade |and |cross |slope |- |CORRECT |ANSWER✔✔-directs |the |runoff |to |the |inlets |and |helps |
eliminate |or |reduce |ponding
inlets |- |CORRECT |ANSWER✔✔-receives |water
, outlet |pipes |- |CORRECT |ANSWER✔✔-leads |water |away |from |the |drain
downspout |pipes |- |CORRECT |ANSWER✔✔-directs |deck |drainage |from |outlet |pipe
cleanout |plugs |- |CORRECT |ANSWER✔✔-removable |plug |in |piping |system |that |allows |access |for
|cleaning |downspout |pipes
drainage |troughs |- |CORRECT |ANSWER✔✔-located |under |open |joints |to |divert |runoff |away |
from |components
scupper |- |CORRECT |ANSWER✔✔-inlet |on |a |bridge |that |receives |water, |with |grate |or |
perforated |cover |to |keep |out |large |debris
Deck |Drains |- |CORRECT |ANSWER✔✔-open |holes |or |embedded |tubes |similar |to |scuppers
downspout |- |CORRECT |ANSWER✔✔-directs |drainage |to |nearby |storm |drain
weep |holes |- |CORRECT |ANSWER✔✔-small |drainage |holes |found |in |abutment |stems |and |
retaining |walls |which |allow |water |to |drain |from |behind |abutment
underdrains |- |CORRECT |ANSWER✔✔-perforated |pipes |routed |along |back |face |of |the |abutment
|and |channeled |to |a |nearby |waterway |or |storm |water |drainage |system
aerial |obstruction |lighting |- |CORRECT |ANSWER✔✔-used |to |alert |aircraft |that |a |hazard |exists |
below
navigation |lighting |- |CORRECT |ANSWER✔✔-used |to |safe |control |a |waterway
