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Exam (elaborations)

NHI Safety Inspection of In-Service Bridges FINAL EXAM

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NHI Safety Inspection of In-Service Bridges FINAL EXAM

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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



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centmdeckmsection.musuallymfoundmonmshortmspanmbridges,musuallymunprotected



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mCORRECTmANSWERmtoothmplatemjoint,mtwomsteelmplatesmthatmhaveminterlockingmfingers.musuallym


onmlongermspans.mcanmaccommodatemmovementmfromm4mtom24minches



drainagemsystemm-
mCORRECTmANSWERmmovemwatermawaymfrommspecificmlocationsm(tomprotectmthembridge)




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mCORRECTmANSWERmdirectsmthemrunoffmtomtheminletsmandmhelpsmeliminatemormreducemponding

, inletsm-mCORRECTmANSWERmreceivesmwater



outletmpipesm-mCORRECTmANSWERmleadsmwatermawaymfrommthemdrain



downspoutmpipesm-mCORRECTmANSWERmdirectsmdeckmdrainagemfrommoutletmpipe



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DeckmDrainsm-mCORRECTmANSWERmopenmholesmormembeddedmtubesmsimilarmtomscuppers



downspoutm-mCORRECTmANSWERmdirectsmdrainagemtomnearbymstormmdrain



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underdrainsm-
mCORRECTmANSWERmperforatedmpipesmroutedmalongmbackmfacemofmthemabutmentmandmchanneled


mtomamnearbymwaterwaymormstormmwatermdrainagemsystem

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