Draft

2.3LateralLoads 43

StructuralSystem RW H(ft)

Bearingwallsystem

Light-framedwallswithshearpanels

Plywood wallsforstructuresthreestoriesor less 8 65

Allotherlight-framedwalls 6 65

Shearwalls

Concrete 8 240

Masonry 8 160

Buildingframesystemusingtrussingor shearwalls)

Steeleccentricallybracedductielframe 10 240

Light-framedwallswithshearpanels

Plywood wallsforstructuresthreestoriesor less 9 65

Allotherlight-framedwalls 7 65

Shearwalls

Concrete 8 240

Masonry 8 160

Concentricallybracedframes

Steel 8 160

Concrete(onlyforzonesI and2) 8 -

Heavytimber 8 65

Moment-resistingframesystem

Specialmoment-resistingframes(SMRF)

Steel 12 N.L.

Concrete 12 N.L.

Concreteintermediatemoment-resistingframes(IMRF)onlyforzones1 and 2 8 -

Ordinarymoment-resistingframes(OMRF)

Steel 6 160

Concrete(onlyforzone1) 5 -

Dualsystems(selectedcasesareforductilerigidframesonly)

Shearwalls

ConcretewithSMRF 12 N.L.

MasonrywithSMRF 8 160

Steeleccentricallybracedductileframe 6-12 160-N.L.

Concentricallybracedframe 12 N.L.

SteelwithsteelSMRF 10 N.L.

SteelwithsteelOMRF 6 160

ConcretewithconcreteSMRF(onlyforzones1 and2) 9 -

Table2.12: PartialListofRWforVariousStructureSystems,(UBC1995)