按結構形(xing)式和(he)(he)受力特點(dian)樓梯(ti)形(xing)式可分為板式、梁式、懸挑(tiao)(剪刀)式和(he)(he)螺(luo)旋式，前兩(liang)種屬于平(ping)面受力體系，后(hou)兩(liang)種則為空間受力體系。

板(ban)(ban)式(shi)樓(lou)梯(ti)(ti)是由梯(ti)(ti)段(duan)板(ban)(ban)、平(ping)(ping)臺(tai)板(ban)(ban)和平(ping)(ping)臺(tai)梁(liang)組(zu)成。梯(ti)(ti)段(duan)板(ban)(ban)是一(yi)塊(kuai)帶踏步的(de)斜(xie)板(ban)(ban)，斜(xie)板(ban)(ban)支承于上、下平(ping)(ping)臺(tai)梁(liang)上，底(di)層(ceng)下端支承在地壟墻上。板(ban)(ban)式(shi)樓(lou)梯(ti)(ti)的(de)優點是梯(ti)(ti)段(duan)板(ban)(ban)下表面平(ping)(ping)整，支模簡單(dan);其缺點是梯(ti)(ti)段(duan)板(ban)(ban)跨度較(jiao)大時(shi)，斜(xie)板(ban)(ban)厚度較(jiao)大，結構材料(liao)用量較(jiao)多。因此(ci)板(ban)(ban)式(shi)樓(lou)梯(ti)(ti)適用于可變荷(he)載(zai)較(jiao)小、梯(ti)(ti)段(duan)板(ban)(ban)跨度一(yi)般不(bu)大于3m的(de)情況。