按結(jie)構形(xing)式和受(shou)力(li)(li)特點樓梯形(xing)式可分為板式、梁式、懸挑(剪刀)式和螺旋式，前兩種屬于(yu)平面(mian)受(shou)力(li)(li)體(ti)系，后兩種則為空(kong)間受(shou)力(li)(li)體(ti)系。

板(ban)(ban)(ban)(ban)式樓(lou)梯(ti)(ti)(ti)是(shi)由梯(ti)(ti)(ti)段(duan)板(ban)(ban)(ban)(ban)、平臺(tai)(tai)板(ban)(ban)(ban)(ban)和平臺(tai)(tai)梁(liang)組成。梯(ti)(ti)(ti)段(duan)板(ban)(ban)(ban)(ban)是(shi)一塊(kuai)帶踏(ta)步(bu)的(de)斜(xie)板(ban)(ban)(ban)(ban)，斜(xie)板(ban)(ban)(ban)(ban)支(zhi)承于(yu)上、下平臺(tai)(tai)梁(liang)上，底層(ceng)下端支(zhi)承在地壟墻上。板(ban)(ban)(ban)(ban)式樓(lou)梯(ti)(ti)(ti)的(de)優(you)點(dian)是(shi)梯(ti)(ti)(ti)段(duan)板(ban)(ban)(ban)(ban)下表面平整，支(zhi)模簡(jian)單;其缺點(dian)是(shi)梯(ti)(ti)(ti)段(duan)板(ban)(ban)(ban)(ban)跨度(du)較大時，斜(xie)板(ban)(ban)(ban)(ban)厚度(du)較大，結構材料用(yong)量較多。因此板(ban)(ban)(ban)(ban)式樓(lou)梯(ti)(ti)(ti)適用(yong)于(yu)可變荷載較小、梯(ti)(ti)(ti)段(duan)板(ban)(ban)(ban)(ban)跨度(du)一般(ban)不大于(yu)3m的(de)情況(kuang)。