按結構形式(shi)(shi)和受(shou)力特點樓梯形式(shi)(shi)可分為板(ban)式(shi)(shi)、梁式(shi)(shi)、懸挑(剪刀)式(shi)(shi)和螺旋式(shi)(shi)，前兩(liang)種屬于平面受(shou)力體(ti)系(xi)，后兩(liang)種則為空間受(shou)力體(ti)系(xi)。

板(ban)(ban)(ban)式(shi)樓梯(ti)是(shi)由(you)梯(ti)段(duan)板(ban)(ban)(ban)、平(ping)臺板(ban)(ban)(ban)和(he)平(ping)臺梁組成。梯(ti)段(duan)板(ban)(ban)(ban)是(shi)一(yi)塊帶踏步的(de)斜(xie)板(ban)(ban)(ban)，斜(xie)板(ban)(ban)(ban)支(zhi)承(cheng)于(yu)上、下平(ping)臺梁上，底層下端(duan)支(zhi)承(cheng)在(zai)地(di)壟墻上。板(ban)(ban)(ban)式(shi)樓梯(ti)的(de)優點是(shi)梯(ti)段(duan)板(ban)(ban)(ban)下表面(mian)平(ping)整，支(zhi)模(mo)簡單;其缺點是(shi)梯(ti)段(duan)板(ban)(ban)(ban)跨度(du)(du)較大(da)時(shi)，斜(xie)板(ban)(ban)(ban)厚度(du)(du)較大(da)，結構材料(liao)用量(liang)較多。因此板(ban)(ban)(ban)式(shi)樓梯(ti)適用于(yu)可變荷(he)載較小、梯(ti)段(duan)板(ban)(ban)(ban)跨度(du)(du)一(yi)般(ban)不大(da)于(yu)3m的(de)情況。