按結構形式(shi)和(he)受(shou)(shou)力(li)特點(dian)樓(lou)梯形式(shi)可分(fen)為板式(shi)、梁式(shi)、懸挑(tiao)(剪刀)式(shi)和(he)螺旋式(shi)，前兩種屬于平面受(shou)(shou)力(li)體系，后兩種則(ze)為空間受(shou)(shou)力(li)體系。

板(ban)(ban)式(shi)(shi)樓梯(ti)是(shi)由梯(ti)段板(ban)(ban)、平臺板(ban)(ban)和平臺梁組成(cheng)。梯(ti)段板(ban)(ban)是(shi)一(yi)(yi)塊帶踏步的(de)斜板(ban)(ban)，斜板(ban)(ban)支(zhi)承(cheng)于上、下平臺梁上，底(di)層下端支(zhi)承(cheng)在地壟墻上。板(ban)(ban)式(shi)(shi)樓梯(ti)的(de)優點是(shi)梯(ti)段板(ban)(ban)下表(biao)面平整，支(zhi)模(mo)簡(jian)單;其缺(que)點是(shi)梯(ti)段板(ban)(ban)跨度(du)較大時，斜板(ban)(ban)厚度(du)較大，結構材料用量較多。因此板(ban)(ban)式(shi)(shi)樓梯(ti)適用于可變(bian)荷載較小、梯(ti)段板(ban)(ban)跨度(du)一(yi)(yi)般不大于3m的(de)情況。