按(an)結構形式和受(shou)力(li)(li)特(te)點(dian)樓梯形式可分(fen)為板式、梁式、懸挑(剪刀)式和螺旋式，前兩種(zhong)屬于(yu)平面受(shou)力(li)(li)體系，后兩種(zhong)則為空間受(shou)力(li)(li)體系。

板(ban)(ban)(ban)(ban)式樓梯是(shi)由(you)梯段(duan)(duan)板(ban)(ban)(ban)(ban)、平臺板(ban)(ban)(ban)(ban)和平臺梁組成。梯段(duan)(duan)板(ban)(ban)(ban)(ban)是(shi)一(yi)塊帶踏步(bu)的斜(xie)板(ban)(ban)(ban)(ban)，斜(xie)板(ban)(ban)(ban)(ban)支承(cheng)于(yu)上(shang)(shang)、下平臺梁上(shang)(shang)，底層下端支承(cheng)在地壟(long)墻上(shang)(shang)。板(ban)(ban)(ban)(ban)式樓梯的優(you)點(dian)是(shi)梯段(duan)(duan)板(ban)(ban)(ban)(ban)下表面平整，支模簡單;其缺(que)點(dian)是(shi)梯段(duan)(duan)板(ban)(ban)(ban)(ban)跨度(du)較(jiao)大(da)(da)時，斜(xie)板(ban)(ban)(ban)(ban)厚度(du)較(jiao)大(da)(da)，結構材料(liao)用(yong)量較(jiao)多。因此板(ban)(ban)(ban)(ban)式樓梯適(shi)用(yong)于(yu)可變荷載較(jiao)小、梯段(duan)(duan)板(ban)(ban)(ban)(ban)跨度(du)一(yi)般不大(da)(da)于(yu)3m的情況。