按結構形式(shi)和受力(li)(li)特點(dian)樓梯形式(shi)可分為板式(shi)、梁式(shi)、懸挑(剪(jian)刀)式(shi)和螺旋(xuan)式(shi)，前兩種屬于平面(mian)受力(li)(li)體系，后兩種則為空(kong)間受力(li)(li)體系。

板(ban)(ban)(ban)式(shi)(shi)樓梯(ti)(ti)(ti)是(shi)由梯(ti)(ti)(ti)段板(ban)(ban)(ban)、平(ping)臺板(ban)(ban)(ban)和平(ping)臺梁組成。梯(ti)(ti)(ti)段板(ban)(ban)(ban)是(shi)一塊帶踏步的斜(xie)(xie)板(ban)(ban)(ban)，斜(xie)(xie)板(ban)(ban)(ban)支(zhi)承于上(shang)、下(xia)(xia)平(ping)臺梁上(shang)，底層下(xia)(xia)端支(zhi)承在(zai)地壟墻上(shang)。板(ban)(ban)(ban)式(shi)(shi)樓梯(ti)(ti)(ti)的優點(dian)是(shi)梯(ti)(ti)(ti)段板(ban)(ban)(ban)下(xia)(xia)表面平(ping)整，支(zhi)模簡單;其(qi)缺點(dian)是(shi)梯(ti)(ti)(ti)段板(ban)(ban)(ban)跨(kua)度(du)(du)較大(da)時，斜(xie)(xie)板(ban)(ban)(ban)厚(hou)度(du)(du)較大(da)，結構材料用量較多。因此板(ban)(ban)(ban)式(shi)(shi)樓梯(ti)(ti)(ti)適用于可變荷載較小、梯(ti)(ti)(ti)段板(ban)(ban)(ban)跨(kua)度(du)(du)一般(ban)不大(da)于3m的情況。