按結構形式(shi)(shi)和受(shou)力(li)特點(dian)樓(lou)梯(ti)形式(shi)(shi)可分(fen)為板式(shi)(shi)、梁(liang)式(shi)(shi)、懸挑(剪刀(dao))式(shi)(shi)和螺(luo)旋式(shi)(shi)，前兩(liang)種(zhong)屬(shu)于平面受(shou)力(li)體系，后兩(liang)種(zhong)則為空間受(shou)力(li)體系。

板(ban)(ban)(ban)(ban)式樓梯(ti)(ti)是(shi)由梯(ti)(ti)段(duan)板(ban)(ban)(ban)(ban)、平(ping)(ping)臺(tai)板(ban)(ban)(ban)(ban)和平(ping)(ping)臺(tai)梁組成(cheng)。梯(ti)(ti)段(duan)板(ban)(ban)(ban)(ban)是(shi)一(yi)塊帶踏(ta)步的斜(xie)板(ban)(ban)(ban)(ban)，斜(xie)板(ban)(ban)(ban)(ban)支(zhi)(zhi)承于(yu)上、下(xia)平(ping)(ping)臺(tai)梁上，底層下(xia)端(duan)支(zhi)(zhi)承在地壟(long)墻上。板(ban)(ban)(ban)(ban)式樓梯(ti)(ti)的優點是(shi)梯(ti)(ti)段(duan)板(ban)(ban)(ban)(ban)下(xia)表面平(ping)(ping)整，支(zhi)(zhi)模簡單(dan);其缺點是(shi)梯(ti)(ti)段(duan)板(ban)(ban)(ban)(ban)跨度較(jiao)大(da)時，斜(xie)板(ban)(ban)(ban)(ban)厚度較(jiao)大(da)，結構(gou)材料(liao)用量(liang)較(jiao)多。因此板(ban)(ban)(ban)(ban)式樓梯(ti)(ti)適(shi)用于(yu)可變荷載(zai)較(jiao)小(xiao)、梯(ti)(ti)段(duan)板(ban)(ban)(ban)(ban)跨度一(yi)般不大(da)于(yu)3m的情況。