按結構形式(shi)(shi)和受(shou)力特點樓(lou)梯形式(shi)(shi)可分為(wei)板式(shi)(shi)、梁式(shi)(shi)、懸挑(剪(jian)刀(dao))式(shi)(shi)和螺旋(xuan)式(shi)(shi)，前兩(liang)種屬于平面受(shou)力體系(xi)，后(hou)兩(liang)種則為(wei)空(kong)間受(shou)力體系(xi)。

板(ban)(ban)式(shi)樓梯是(shi)由梯段板(ban)(ban)、平(ping)臺板(ban)(ban)和平(ping)臺梁組(zu)成。梯段板(ban)(ban)是(shi)一(yi)塊(kuai)帶踏步的斜板(ban)(ban)，斜板(ban)(ban)支(zhi)承(cheng)于上(shang)(shang)、下平(ping)臺梁上(shang)(shang)，底(di)層下端支(zhi)承(cheng)在地壟墻(qiang)上(shang)(shang)。板(ban)(ban)式(shi)樓梯的優點是(shi)梯段板(ban)(ban)下表面平(ping)整，支(zhi)模簡單;其缺點是(shi)梯段板(ban)(ban)跨(kua)(kua)度(du)較(jiao)大時(shi)，斜板(ban)(ban)厚度(du)較(jiao)大，結構材料用量較(jiao)多。因此板(ban)(ban)式(shi)樓梯適用于可(ke)變荷載較(jiao)小、梯段板(ban)(ban)跨(kua)(kua)度(du)一(yi)般(ban)不大于3m的情況。