按結構形式(shi)和(he)受力(li)特點樓(lou)梯形式(shi)可分為板式(shi)、梁式(shi)、懸(xuan)挑(剪刀)式(shi)和(he)螺旋式(shi)，前兩種屬于平面受力(li)體系，后兩種則為空間受力(li)體系。

板(ban)(ban)(ban)式(shi)樓梯(ti)是(shi)由(you)梯(ti)段(duan)板(ban)(ban)(ban)、平(ping)臺(tai)(tai)板(ban)(ban)(ban)和平(ping)臺(tai)(tai)梁組成。梯(ti)段(duan)板(ban)(ban)(ban)是(shi)一(yi)塊帶踏(ta)步的斜(xie)板(ban)(ban)(ban)，斜(xie)板(ban)(ban)(ban)支承于上(shang)、下平(ping)臺(tai)(tai)梁上(shang)，底層下端(duan)支承在地(di)壟(long)墻上(shang)。板(ban)(ban)(ban)式(shi)樓梯(ti)的優(you)點是(shi)梯(ti)段(duan)板(ban)(ban)(ban)下表(biao)面(mian)平(ping)整，支模簡單;其缺點是(shi)梯(ti)段(duan)板(ban)(ban)(ban)跨度(du)較大(da)時，斜(xie)板(ban)(ban)(ban)厚度(du)較大(da)，結構材料用量較多。因此板(ban)(ban)(ban)式(shi)樓梯(ti)適用于可變荷(he)載(zai)較小、梯(ti)段(duan)板(ban)(ban)(ban)跨度(du)一(yi)般不大(da)于3m的情(qing)況。