2025 IRC EXAM CHAPTER 3 QUESTIONS WITH CORRECT ANSWERS

2025 IRC EXAM CHAPTER 3 QUESTIONS
WITH CORRECT ANSWERS
LightGswitchGisGrequiredGatGtheGtopGandGbottomGofGinteriorGstairsGthatGhaveGatGleastG____________Grisers.
G-GcorrectGanswer-6




R303.7GInteriorGstairwayGillumination.



SmokeGalarmsGmustGbeGminimumG__________GfeetGfromGheatGregistersGorGpaddleGfans.G-GcorrectGanswer-
3



ExteriorGstairwaysGshallGbeGprovidedGwithGanGartificialGlightGsourceGlocatedGatGtheG_________G_________
__.G-GcorrectGanswer-topGlanding



R303.8GExteriorGstairwayGillumination.



AGtopGlandingGisGnotGrequiredGwhereGaGstairwayGofGnotGmoreGthanG____________GrisersGisGlocatedGonGthe
GexteriorGsideGofGtheGdoor,GprovidedGthatGtheGdoorGdoesGnotGswingGoverGtheGstairway.G-GcorrectGanswer-2




R311.3.2GFloorGelevationsGatGotherGexteriorGdoors.



CeilingGheightGforGshowers,Gtubs,GandGotherGbathroomGandGtoiletGroomGfixturesGshallGbeGminimumG_____
______.G-GcorrectGanswer-80GinchesG(6'-8")



R305.1GMinimumGheight



ShowersGmustGbeGatGleastG___________GinchesGinGeachGdirection.G-GcorrectGanswer-30



R307.1GSpaceGrequired.



_____________GinchesGminimumGwidthGofGshowerGdoor.G-GcorrectGanswer-22

, _____________GinchesGminimumGclearanceGinGfrontGofGsinksGandGtoilets.G-GcorrectGanswer-21



R307.1GSpaceGrequired.



_____________GinchesGminimumGwidthGfromGcenterGofGaGtoiletGtoGaGwallGorGanotherGfixture.G-
GcorrectGanswer-15




R307.1GSpaceGrequired.



HandrailsGwithGaGperimeterGgreaterGthanG6G1/4GinchesGrequireGaG__________G___________G__________G
___________GonGbothGsidesGifGtheGprofile.G-GcorrectGanswer-graspableGfingerGrecessGarea



WoodGrequiredGtoGbeGpressureGtreatedGwhereGitGisGrestingGonGconcreteGthatGisGinGdirectGcontactGwithGtheG
ground.GSillGplates,Gframing,GandGcolumnsGrestingGonGslabsGorGfoundationGwalls.G-GcorrectGanswer-
R317.1GProtectionGofGWoodGAgainstGDecayG-GLocationGRequired



WoodGrequiredGtoGbeGpressureGtreatedGifGwithinGtheseGdistancesGinGcrawlGspacesGtoGtheGexposedGground:

-GWoodGjoists/bottomGofGwoodGstructuralGfloor:G________Ginches

-GWoodGgirder:G_________Ginches

-GWoodGcolumns:G________GinchesG-GcorrectGanswer-18

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8



R317.1G-GProtectionGofGWoodGAgainstGDecayG-GLocationGrequired



TermiteGprotectionGforGwoodGshallGbeG_________G_________G,GandGfield-
cutGends,Gnotches,GandGdrilledGholesGshallGbeG__________GinGtheGfieldGifGrequired.G-GcorrectGanswer-
pressureGtreated

retreated