楼梯Stair主楼梯Mainstair内楼梯Backstair箱形楼梯Boxstair悬臂式楼梯Bracketedstair悬空楼梯Hangingstair螺旋楼梯Spiralstair盘旋楼梯Windingstair交叉布置的自动楼梯Crisscrossarrangementofmovingstair平行布置的自动楼梯Parallelarrangementofmovingstair直跑楼梯,单跑楼梯Straightstair回转式楼梯Turnstair双分叉式楼梯Bifurcatedtypestair狗腿式楼梯Dog-leggedtypestaircase带梯井式楼梯Open-wellstaircase螺旋式楼梯Helicaltypestair中柱螺旋式楼梯Helicaltypestairwithnewel单跑式楼梯Staircaseofstrightflighttype太平梯Escapestair专用太平梯Specialemergencystaircase防火梯Fireescapestaircase封闭楼梯间Closedstaircase开敞楼梯间Openstaircase防烟楼梯井Smokeprotectionstaircase室外楼梯Exteriorstair室外安全疏散楼梯间Exteriorescapestairway室内安全梯Interiorescapestair有围护的的楼梯Stairwayenclosure垂直铁扶梯Verticalironladder移动式楼梯Travelingstairway坡道Ramp爬梯Fixedladder自动楼梯Movingstair楼梯间卸货口Hoistway楼梯平台Stairlanding外挑平台Cantileveredplatform休息楼梯Restingrungs扶梯梯级Ladderstep楼梯段纵梁Stairbearer