按結構形式(shi)和受(shou)力(li)特點樓梯形式(shi)可分為(wei)板式(shi)、梁式(shi)、懸挑(tiao)(剪刀)式(shi)和螺旋式(shi)，前兩(liang)種(zhong)屬(shu)于平面受(shou)力(li)體系，后兩(liang)種(zhong)則為(wei)空間受(shou)力(li)體系。

板(ban)(ban)(ban)式樓(lou)梯(ti)(ti)是(shi)(shi)由(you)梯(ti)(ti)段板(ban)(ban)(ban)、平臺板(ban)(ban)(ban)和平臺梁組成。梯(ti)(ti)段板(ban)(ban)(ban)是(shi)(shi)一塊帶踏(ta)步的斜(xie)板(ban)(ban)(ban)，斜(xie)板(ban)(ban)(ban)支(zhi)承(cheng)于上、下(xia)平臺梁上，底層下(xia)端支(zhi)承(cheng)在地壟墻上。板(ban)(ban)(ban)式樓(lou)梯(ti)(ti)的優點是(shi)(shi)梯(ti)(ti)段板(ban)(ban)(ban)下(xia)表(biao)面平整，支(zhi)模簡(jian)單;其缺點是(shi)(shi)梯(ti)(ti)段板(ban)(ban)(ban)跨度(du)較(jiao)大(da)(da)時，斜(xie)板(ban)(ban)(ban)厚度(du)較(jiao)大(da)(da)，結構材料(liao)用量較(jiao)多(duo)。因此(ci)板(ban)(ban)(ban)式樓(lou)梯(ti)(ti)適用于可變荷載較(jiao)小、梯(ti)(ti)段板(ban)(ban)(ban)跨度(du)一般不(bu)大(da)(da)于3m的情況。