按(an)結構形式和(he)受(shou)力(li)(li)特點樓(lou)梯形式可分為板式、梁式、懸挑(剪(jian)刀)式和(he)螺旋(xuan)式，前兩(liang)種屬于平面受(shou)力(li)(li)體系(xi)，后兩(liang)種則為空間受(shou)力(li)(li)體系(xi)。

板(ban)(ban)(ban)(ban)(ban)(ban)(ban)式(shi)樓梯(ti)(ti)(ti)(ti)是由梯(ti)(ti)(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)、平臺(tai)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)和平臺(tai)梁組(zu)成。梯(ti)(ti)(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)是一塊帶踏步(bu)的(de)斜板(ban)(ban)(ban)(ban)(ban)(ban)(ban)，斜板(ban)(ban)(ban)(ban)(ban)(ban)(ban)支承(cheng)(cheng)于上(shang)、下平臺(tai)梁上(shang)，底層(ceng)下端支承(cheng)(cheng)在地壟墻上(shang)。板(ban)(ban)(ban)(ban)(ban)(ban)(ban)式(shi)樓梯(ti)(ti)(ti)(ti)的(de)優點是梯(ti)(ti)(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)下表(biao)面平整，支模簡(jian)單;其缺點是梯(ti)(ti)(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)跨度較大(da)時(shi)，斜板(ban)(ban)(ban)(ban)(ban)(ban)(ban)厚度較大(da)，結(jie)構材料用量較多。因此板(ban)(ban)(ban)(ban)(ban)(ban)(ban)式(shi)樓梯(ti)(ti)(ti)(ti)適用于可(ke)變荷載較小(xiao)、梯(ti)(ti)(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)跨度一般(ban)不(bu)大(da)于3m的(de)情況(kuang)。