按結構形式(shi)(shi)和(he)受(shou)力(li)(li)特點樓梯形式(shi)(shi)可分(fen)為板式(shi)(shi)、梁式(shi)(shi)、懸挑(剪刀)式(shi)(shi)和(he)螺旋式(shi)(shi)，前兩種(zhong)屬于平面受(shou)力(li)(li)體(ti)系，后兩種(zhong)則為空(kong)間受(shou)力(li)(li)體(ti)系。

板(ban)(ban)式樓(lou)(lou)梯(ti)是(shi)由梯(ti)段(duan)板(ban)(ban)、平臺板(ban)(ban)和平臺梁(liang)組成(cheng)。梯(ti)段(duan)板(ban)(ban)是(shi)一塊帶踏步(bu)的(de)斜(xie)板(ban)(ban)，斜(xie)板(ban)(ban)支承(cheng)于(yu)(yu)上(shang)、下平臺梁(liang)上(shang)，底(di)層(ceng)下端支承(cheng)在地壟(long)墻上(shang)。板(ban)(ban)式樓(lou)(lou)梯(ti)的(de)優點(dian)(dian)是(shi)梯(ti)段(duan)板(ban)(ban)下表面平整，支模簡單;其缺點(dian)(dian)是(shi)梯(ti)段(duan)板(ban)(ban)跨度(du)較(jiao)大時(shi)，斜(xie)板(ban)(ban)厚度(du)較(jiao)大，結構(gou)材料用量(liang)較(jiao)多。因此(ci)板(ban)(ban)式樓(lou)(lou)梯(ti)適用于(yu)(yu)可(ke)變荷載(zai)較(jiao)小、梯(ti)段(duan)板(ban)(ban)跨度(du)一般不(bu)大于(yu)(yu)3m的(de)情況。