按結(jie)構形(xing)式和受力特(te)點樓梯形(xing)式可分為板式、梁(liang)式、懸挑(剪刀)式和螺(luo)旋式，前兩種屬于平面受力體系(xi)，后(hou)兩種則(ze)為空間受力體系(xi)。

板(ban)(ban)(ban)式(shi)樓梯(ti)(ti)(ti)是由梯(ti)(ti)(ti)段板(ban)(ban)(ban)、平(ping)臺板(ban)(ban)(ban)和平(ping)臺梁組成。梯(ti)(ti)(ti)段板(ban)(ban)(ban)是一塊(kuai)帶踏步的斜(xie)板(ban)(ban)(ban)，斜(xie)板(ban)(ban)(ban)支(zhi)承(cheng)于(yu)(yu)上、下平(ping)臺梁上，底層下端支(zhi)承(cheng)在(zai)地壟墻(qiang)上。板(ban)(ban)(ban)式(shi)樓梯(ti)(ti)(ti)的優(you)點是梯(ti)(ti)(ti)段板(ban)(ban)(ban)下表面平(ping)整，支(zhi)模簡(jian)單;其缺點是梯(ti)(ti)(ti)段板(ban)(ban)(ban)跨度較(jiao)(jiao)大時，斜(xie)板(ban)(ban)(ban)厚度較(jiao)(jiao)大，結構材料(liao)用(yong)量(liang)較(jiao)(jiao)多。因此板(ban)(ban)(ban)式(shi)樓梯(ti)(ti)(ti)適用(yong)于(yu)(yu)可變(bian)荷載(zai)較(jiao)(jiao)小、梯(ti)(ti)(ti)段板(ban)(ban)(ban)跨度一般不大于(yu)(yu)3m的情況。