按結構形式(shi)和受力(li)(li)特點樓梯(ti)形式(shi)可(ke)分(fen)為板式(shi)、梁式(shi)、懸挑(剪刀)式(shi)和螺旋式(shi)，前兩(liang)種(zhong)屬于平面受力(li)(li)體(ti)系，后兩(liang)種(zhong)則(ze)為空間(jian)受力(li)(li)體(ti)系。

板(ban)(ban)式樓梯是由梯段(duan)板(ban)(ban)、平臺板(ban)(ban)和平臺梁組(zu)成(cheng)。梯段(duan)板(ban)(ban)是一塊帶踏(ta)步(bu)的斜(xie)板(ban)(ban)，斜(xie)板(ban)(ban)支承于上、下(xia)平臺梁上，底層下(xia)端支承在地壟墻上。板(ban)(ban)式樓梯的優點是梯段(duan)板(ban)(ban)下(xia)表面平整，支模(mo)簡單;其缺點是梯段(duan)板(ban)(ban)跨度(du)(du)較(jiao)大(da)時，斜(xie)板(ban)(ban)厚度(du)(du)較(jiao)大(da)，結(jie)構材料用量(liang)較(jiao)多(duo)。因此板(ban)(ban)式樓梯適用于可變荷載較(jiao)小、梯段(duan)板(ban)(ban)跨度(du)(du)一般不大(da)于3m的情況。