按結構形式(shi)和受(shou)力(li)(li)特點樓梯形式(shi)可分為板式(shi)、梁式(shi)、懸挑(剪刀)式(shi)和螺旋式(shi)，前兩種屬(shu)于(yu)平面受(shou)力(li)(li)體系，后兩種則為空間受(shou)力(li)(li)體系。

板(ban)(ban)(ban)式(shi)樓梯是由梯段(duan)(duan)(duan)板(ban)(ban)(ban)、平(ping)臺板(ban)(ban)(ban)和平(ping)臺梁(liang)組成。梯段(duan)(duan)(duan)板(ban)(ban)(ban)是一塊帶踏步的(de)斜板(ban)(ban)(ban)，斜板(ban)(ban)(ban)支承于上(shang)、下(xia)平(ping)臺梁(liang)上(shang)，底(di)層下(xia)端(duan)支承在地壟(long)墻上(shang)。板(ban)(ban)(ban)式(shi)樓梯的(de)優(you)點(dian)是梯段(duan)(duan)(duan)板(ban)(ban)(ban)下(xia)表(biao)面平(ping)整(zheng)，支模簡(jian)單;其缺點(dian)是梯段(duan)(duan)(duan)板(ban)(ban)(ban)跨度較大時，斜板(ban)(ban)(ban)厚度較大，結(jie)構(gou)材料用量較多。因此板(ban)(ban)(ban)式(shi)樓梯適用于可變荷載較小、梯段(duan)(duan)(duan)板(ban)(ban)(ban)跨度一般不(bu)大于3m的(de)情況。