按結(jie)構(gou)形(xing)(xing)式和受力(li)特(te)點樓(lou)梯形(xing)(xing)式可分為板式、梁式、懸挑(tiao)(剪(jian)刀(dao))式和螺旋(xuan)式，前(qian)兩(liang)種屬于(yu)平面受力(li)體(ti)系，后兩(liang)種則為空間受力(li)體(ti)系。

板(ban)(ban)(ban)式(shi)樓梯(ti)(ti)是由梯(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)、平(ping)臺板(ban)(ban)(ban)和平(ping)臺梁組成。梯(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)是一塊(kuai)帶踏步的(de)斜板(ban)(ban)(ban)，斜板(ban)(ban)(ban)支(zhi)承(cheng)于(yu)上、下平(ping)臺梁上，底(di)層下端支(zhi)承(cheng)在(zai)地壟墻上。板(ban)(ban)(ban)式(shi)樓梯(ti)(ti)的(de)優點是梯(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)下表面平(ping)整，支(zhi)模簡單;其缺點是梯(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)跨(kua)度較(jiao)大時，斜板(ban)(ban)(ban)厚度較(jiao)大，結構材料用量較(jiao)多。因此板(ban)(ban)(ban)式(shi)樓梯(ti)(ti)適(shi)用于(yu)可變荷載較(jiao)小、梯(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)跨(kua)度一般不大于(yu)3m的(de)情況。