按結構形式(shi)和(he)受(shou)力(li)特點樓梯形式(shi)可分為板式(shi)、梁式(shi)、懸(xuan)挑(剪(jian)刀)式(shi)和(he)螺旋式(shi)，前兩種(zhong)屬于平面受(shou)力(li)體(ti)系，后兩種(zhong)則(ze)為空間受(shou)力(li)體(ti)系。

板(ban)(ban)(ban)式樓梯是由梯段(duan)板(ban)(ban)(ban)、平臺(tai)(tai)板(ban)(ban)(ban)和平臺(tai)(tai)梁(liang)組成。梯段(duan)板(ban)(ban)(ban)是一(yi)塊帶踏步的斜板(ban)(ban)(ban)，斜板(ban)(ban)(ban)支承(cheng)于上(shang)、下平臺(tai)(tai)梁(liang)上(shang)，底層下端支承(cheng)在(zai)地壟墻上(shang)。板(ban)(ban)(ban)式樓梯的優點是梯段(duan)板(ban)(ban)(ban)下表(biao)面平整，支模簡單;其缺(que)點是梯段(duan)板(ban)(ban)(ban)跨(kua)度(du)較(jiao)大時(shi)，斜板(ban)(ban)(ban)厚度(du)較(jiao)大，結構材(cai)料用(yong)量較(jiao)多。因此板(ban)(ban)(ban)式樓梯適用(yong)于可變荷載較(jiao)小、梯段(duan)板(ban)(ban)(ban)跨(kua)度(du)一(yi)般不大于3m的情況。