按結構形式和受(shou)力特(te)點樓梯形式可分為板(ban)式、梁式、懸(xuan)挑(剪(jian)刀)式和螺(luo)旋式，前兩(liang)種屬(shu)于平面受(shou)力體系，后兩(liang)種則為空間受(shou)力體系。

板(ban)(ban)式(shi)(shi)(shi)樓梯(ti)是(shi)由梯(ti)段(duan)(duan)板(ban)(ban)、平臺(tai)(tai)板(ban)(ban)和平臺(tai)(tai)梁(liang)組(zu)成。梯(ti)段(duan)(duan)板(ban)(ban)是(shi)一塊(kuai)帶(dai)踏(ta)步(bu)的(de)斜(xie)板(ban)(ban)，斜(xie)板(ban)(ban)支(zhi)(zhi)承于上、下(xia)(xia)平臺(tai)(tai)梁(liang)上，底層下(xia)(xia)端(duan)支(zhi)(zhi)承在地壟(long)墻上。板(ban)(ban)式(shi)(shi)(shi)樓梯(ti)的(de)優點是(shi)梯(ti)段(duan)(duan)板(ban)(ban)下(xia)(xia)表(biao)面平整(zheng)，支(zhi)(zhi)模簡單;其缺點是(shi)梯(ti)段(duan)(duan)板(ban)(ban)跨度(du)較(jiao)(jiao)大時，斜(xie)板(ban)(ban)厚度(du)較(jiao)(jiao)大，結構材料(liao)用(yong)量較(jiao)(jiao)多。因此板(ban)(ban)式(shi)(shi)(shi)樓梯(ti)適用(yong)于可變荷載(zai)較(jiao)(jiao)小、梯(ti)段(duan)(duan)板(ban)(ban)跨度(du)一般不大于3m的(de)情況。