按結構形式(shi)和(he)受力(li)特點(dian)樓梯形式(shi)可分為板式(shi)、梁式(shi)、懸挑(剪刀)式(shi)和(he)螺(luo)旋(xuan)式(shi)，前兩(liang)種屬(shu)于平面受力(li)體(ti)系(xi)，后兩(liang)種則為空間(jian)受力(li)體(ti)系(xi)。

板(ban)(ban)(ban)式樓(lou)(lou)梯(ti)(ti)(ti)(ti)是(shi)(shi)由(you)梯(ti)(ti)(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)、平(ping)臺(tai)板(ban)(ban)(ban)和平(ping)臺(tai)梁組成(cheng)。梯(ti)(ti)(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)是(shi)(shi)一(yi)塊帶踏步的斜板(ban)(ban)(ban)，斜板(ban)(ban)(ban)支(zhi)承于(yu)上(shang)、下平(ping)臺(tai)梁上(shang)，底(di)層下端(duan)支(zhi)承在地壟墻上(shang)。板(ban)(ban)(ban)式樓(lou)(lou)梯(ti)(ti)(ti)(ti)的優(you)點是(shi)(shi)梯(ti)(ti)(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)下表面平(ping)整，支(zhi)模簡單;其缺點是(shi)(shi)梯(ti)(ti)(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)跨度(du)較大(da)時，斜板(ban)(ban)(ban)厚(hou)度(du)較大(da)，結構材(cai)料(liao)用(yong)量(liang)較多(duo)。因此板(ban)(ban)(ban)式樓(lou)(lou)梯(ti)(ti)(ti)(ti)適用(yong)于(yu)可變荷載較小(xiao)、梯(ti)(ti)(ti)(ti)段(duan)(duan)板(ban)(ban)(ban)跨度(du)一(yi)般不(bu)大(da)于(yu)3m的情況。