按(an)結構形式(shi)(shi)和(he)受力特點樓梯形式(shi)(shi)可分為板式(shi)(shi)、梁式(shi)(shi)、懸挑(剪刀)式(shi)(shi)和(he)螺旋式(shi)(shi)，前兩(liang)種(zhong)屬于平面受力體系，后兩(liang)種(zhong)則為空間(jian)受力體系。

板(ban)(ban)(ban)式樓(lou)(lou)梯(ti)(ti)是(shi)由梯(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)、平(ping)臺(tai)板(ban)(ban)(ban)和(he)平(ping)臺(tai)梁(liang)組(zu)成(cheng)。梯(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)是(shi)一塊帶踏步的(de)斜(xie)板(ban)(ban)(ban)，斜(xie)板(ban)(ban)(ban)支(zhi)承(cheng)于上、下平(ping)臺(tai)梁(liang)上，底層下端支(zhi)承(cheng)在地壟墻上。板(ban)(ban)(ban)式樓(lou)(lou)梯(ti)(ti)的(de)優點是(shi)梯(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)下表面(mian)平(ping)整，支(zhi)模簡單;其缺點是(shi)梯(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)跨度較大時，斜(xie)板(ban)(ban)(ban)厚度較大，結構材料用(yong)量較多。因此板(ban)(ban)(ban)式樓(lou)(lou)梯(ti)(ti)適用(yong)于可變荷(he)載較小、梯(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)跨度一般(ban)不大于3m的(de)情況。