NHI Safety Inspection of In-Service
Bridges FINAL EXAM
Clackingm-mCORRECTmANSWERmthemsoundmofmdelaminatedmconcrete
Pingingm-mCORRECTmANSWERmthemsoundmofm"sound"mconcrete
Wheremaremshearmkeymjoints?m-mCORRECTmANSWERmbetweenmpre-castmdeckmpanels
Wheremcanmyoumfindmanchoragemzones?m-mCORRECTmANSWERmprecastmdeckmtiemrods
flexuremcracksmaremprimarilymwhatmdirectionmcomparedmtomthemprimarymreinforcement?m-
mCORRECTmANSWERmperpendicular
MainminspectionmareamformFRPmbridges?m-mCORRECTmANSWERmJoints
Assemblymjointmwithoutmseal-mslidingmplatem-
mCORRECTmANSWERmtwomsteelmplatesmslidingmonmtopmofmonemanothermwithmmaximummmovement
mofm4minches
Compressionmjointmsealm-
mCORRECTmANSWERmrectanglemofmneoprenemwithmamhoneycombmcrossmsection.mCanmhandlemmov
ementmofm2minches
pourablemjointmsealm-
mCORRECTmANSWERmmademofmthreemmaterialsm(backingmmaterial,mjointmfiller,mandmampouredmjoint
msealant)mandmcanmonlymaccommodatemmovementmofm1/4minch.mUsedmonmshortmspans
,stripmsealmexpansionmjointm-
mCORRECTmANSWERmtwomslottedmsteelmanchoragesmcastmintomamdeckmormbackmwall.mAmneoprenems
ealmfitsmintomthemgroovesmtomspanmthemjoint.mmaxmmovementmofm4minches
Cellularmjointmsealm-
mCORRECTmANSWERmdifferentmthanmcompressionmbecausemofmmaterialmusedmtomclosemjoint.mMad
emupmofmclosed-
cellmfoammthatmallowsmthemjointmtommoveminmdifferentmdirections.mAllowsmformbothmparallelmandmp
erpendicularmjointmmovement
Assemblymjointmwithmseal-mplankm-
mCORRECTmANSWERmsteelmreinforcedmneoprenemthatmsupportsmvehicularmloadsmovermthemjointman
dmallowmformmovementmupmtom4minches
Assemblymjointmwithmseal-msheetm-
mCORRECTmANSWERmtwomblocksmofmsteelmreinforcedmneoprene.mthinmsheetmofmneoprenemspansmt
hemjointmandmconnectsmthemtwomblocks.mAllowsmformupmtom4minches
openmexpansionmjointm-
mCORRECTmANSWERmgapmbetweenmthembridgemdeckmandmthembackmwallmofmthemabutmentmormadja
centmdeckmsection.musuallymfoundmonmshortmspanmbridges,musuallymunprotected
Assemblymjointmwithoutmseal-mfingermplatem-
mCORRECTmANSWERmtoothmplatemjoint,mtwomsteelmplatesmthatmhaveminterlockingmfingers.musuallym
onmlongermspans.mcanmaccommodatemmovementmfromm4mtom24minches
drainagemsystemm-
mCORRECTmANSWERmmovemwatermawaymfrommspecificmlocationsm(tomprotectmthembridge)
grademandmcrossmslopem-
mCORRECTmANSWERmdirectsmthemrunoffmtomtheminletsmandmhelpsmeliminatemormreducemponding
, inletsm-mCORRECTmANSWERmreceivesmwater
outletmpipesm-mCORRECTmANSWERmleadsmwatermawaymfrommthemdrain
downspoutmpipesm-mCORRECTmANSWERmdirectsmdeckmdrainagemfrommoutletmpipe
cleanoutmplugsm-
mCORRECTmANSWERmremovablemplugminmpipingmsystemmthatmallowsmaccessmformcleaningmdownspo
utmpipes
drainagemtroughsm-
mCORRECTmANSWERmlocatedmundermopenmjointsmtomdivertmrunoffmawaymfrommcomponents
scupperm-
mCORRECTmANSWERminletmonmambridgemthatmreceivesmwater,mwithmgratemormperforatedmcovermtomk
eepmoutmlargemdebris
DeckmDrainsm-mCORRECTmANSWERmopenmholesmormembeddedmtubesmsimilarmtomscuppers
downspoutm-mCORRECTmANSWERmdirectsmdrainagemtomnearbymstormmdrain
weepmholesm-
mCORRECTmANSWERmsmallmdrainagemholesmfoundminmabutmentmstemsmandmretainingmwallsmwhichm
allowmwatermtomdrainmfrommbehindmabutment
underdrainsm-
mCORRECTmANSWERmperforatedmpipesmroutedmalongmbackmfacemofmthemabutmentmandmchanneled
mtomamnearbymwaterwaymormstormmwatermdrainagemsystem
Bridges FINAL EXAM
Clackingm-mCORRECTmANSWERmthemsoundmofmdelaminatedmconcrete
Pingingm-mCORRECTmANSWERmthemsoundmofm"sound"mconcrete
Wheremaremshearmkeymjoints?m-mCORRECTmANSWERmbetweenmpre-castmdeckmpanels
Wheremcanmyoumfindmanchoragemzones?m-mCORRECTmANSWERmprecastmdeckmtiemrods
flexuremcracksmaremprimarilymwhatmdirectionmcomparedmtomthemprimarymreinforcement?m-
mCORRECTmANSWERmperpendicular
MainminspectionmareamformFRPmbridges?m-mCORRECTmANSWERmJoints
Assemblymjointmwithoutmseal-mslidingmplatem-
mCORRECTmANSWERmtwomsteelmplatesmslidingmonmtopmofmonemanothermwithmmaximummmovement
mofm4minches
Compressionmjointmsealm-
mCORRECTmANSWERmrectanglemofmneoprenemwithmamhoneycombmcrossmsection.mCanmhandlemmov
ementmofm2minches
pourablemjointmsealm-
mCORRECTmANSWERmmademofmthreemmaterialsm(backingmmaterial,mjointmfiller,mandmampouredmjoint
msealant)mandmcanmonlymaccommodatemmovementmofm1/4minch.mUsedmonmshortmspans
,stripmsealmexpansionmjointm-
mCORRECTmANSWERmtwomslottedmsteelmanchoragesmcastmintomamdeckmormbackmwall.mAmneoprenems
ealmfitsmintomthemgroovesmtomspanmthemjoint.mmaxmmovementmofm4minches
Cellularmjointmsealm-
mCORRECTmANSWERmdifferentmthanmcompressionmbecausemofmmaterialmusedmtomclosemjoint.mMad
emupmofmclosed-
cellmfoammthatmallowsmthemjointmtommoveminmdifferentmdirections.mAllowsmformbothmparallelmandmp
erpendicularmjointmmovement
Assemblymjointmwithmseal-mplankm-
mCORRECTmANSWERmsteelmreinforcedmneoprenemthatmsupportsmvehicularmloadsmovermthemjointman
dmallowmformmovementmupmtom4minches
Assemblymjointmwithmseal-msheetm-
mCORRECTmANSWERmtwomblocksmofmsteelmreinforcedmneoprene.mthinmsheetmofmneoprenemspansmt
hemjointmandmconnectsmthemtwomblocks.mAllowsmformupmtom4minches
openmexpansionmjointm-
mCORRECTmANSWERmgapmbetweenmthembridgemdeckmandmthembackmwallmofmthemabutmentmormadja
centmdeckmsection.musuallymfoundmonmshortmspanmbridges,musuallymunprotected
Assemblymjointmwithoutmseal-mfingermplatem-
mCORRECTmANSWERmtoothmplatemjoint,mtwomsteelmplatesmthatmhaveminterlockingmfingers.musuallym
onmlongermspans.mcanmaccommodatemmovementmfromm4mtom24minches
drainagemsystemm-
mCORRECTmANSWERmmovemwatermawaymfrommspecificmlocationsm(tomprotectmthembridge)
grademandmcrossmslopem-
mCORRECTmANSWERmdirectsmthemrunoffmtomtheminletsmandmhelpsmeliminatemormreducemponding
, inletsm-mCORRECTmANSWERmreceivesmwater
outletmpipesm-mCORRECTmANSWERmleadsmwatermawaymfrommthemdrain
downspoutmpipesm-mCORRECTmANSWERmdirectsmdeckmdrainagemfrommoutletmpipe
cleanoutmplugsm-
mCORRECTmANSWERmremovablemplugminmpipingmsystemmthatmallowsmaccessmformcleaningmdownspo
utmpipes
drainagemtroughsm-
mCORRECTmANSWERmlocatedmundermopenmjointsmtomdivertmrunoffmawaymfrommcomponents
scupperm-
mCORRECTmANSWERminletmonmambridgemthatmreceivesmwater,mwithmgratemormperforatedmcovermtomk
eepmoutmlargemdebris
DeckmDrainsm-mCORRECTmANSWERmopenmholesmormembeddedmtubesmsimilarmtomscuppers
downspoutm-mCORRECTmANSWERmdirectsmdrainagemtomnearbymstormmdrain
weepmholesm-
mCORRECTmANSWERmsmallmdrainagemholesmfoundminmabutmentmstemsmandmretainingmwallsmwhichm
allowmwatermtomdrainmfrommbehindmabutment
underdrainsm-
mCORRECTmANSWERmperforatedmpipesmroutedmalongmbackmfacemofmthemabutmentmandmchanneled
mtomamnearbymwaterwaymormstormmwatermdrainagemsystem