按結構形式(shi)(shi)和(he)受力特點樓梯(ti)形式(shi)(shi)可(ke)分(fen)為板(ban)式(shi)(shi)、梁式(shi)(shi)、懸挑(剪刀)式(shi)(shi)和(he)螺旋(xuan)式(shi)(shi)，前兩種(zhong)屬于平面受力體系(xi)，后兩種(zhong)則為空間受力體系(xi)。

板(ban)(ban)(ban)(ban)(ban)式樓(lou)(lou)梯是由梯段(duan)(duan)板(ban)(ban)(ban)(ban)(ban)、平(ping)臺板(ban)(ban)(ban)(ban)(ban)和(he)平(ping)臺梁組成。梯段(duan)(duan)板(ban)(ban)(ban)(ban)(ban)是一(yi)塊(kuai)帶(dai)踏步(bu)的斜(xie)板(ban)(ban)(ban)(ban)(ban)，斜(xie)板(ban)(ban)(ban)(ban)(ban)支(zhi)承于(yu)(yu)上(shang)、下(xia)(xia)平(ping)臺梁上(shang)，底層下(xia)(xia)端(duan)支(zhi)承在地壟墻上(shang)。板(ban)(ban)(ban)(ban)(ban)式樓(lou)(lou)梯的優點(dian)是梯段(duan)(duan)板(ban)(ban)(ban)(ban)(ban)下(xia)(xia)表(biao)面平(ping)整，支(zhi)模簡單;其缺(que)點(dian)是梯段(duan)(duan)板(ban)(ban)(ban)(ban)(ban)跨(kua)度較(jiao)大時，斜(xie)板(ban)(ban)(ban)(ban)(ban)厚度較(jiao)大，結構材料(liao)用(yong)量(liang)較(jiao)多。因此板(ban)(ban)(ban)(ban)(ban)式樓(lou)(lou)梯適用(yong)于(yu)(yu)可變荷載較(jiao)小、梯段(duan)(duan)板(ban)(ban)(ban)(ban)(ban)跨(kua)度一(yi)般(ban)不大于(yu)(yu)3m的情(qing)況。