按結構形式(shi)(shi)和受力(li)特點樓梯形式(shi)(shi)可分為板(ban)式(shi)(shi)、梁(liang)式(shi)(shi)、懸挑(tiao)(剪刀)式(shi)(shi)和螺旋式(shi)(shi)，前兩種屬于(yu)平面受力(li)體(ti)系(xi)，后(hou)兩種則為空(kong)間受力(li)體(ti)系(xi)。

板(ban)(ban)式樓(lou)(lou)梯(ti)(ti)是(shi)由梯(ti)(ti)段板(ban)(ban)、平(ping)(ping)臺(tai)板(ban)(ban)和(he)平(ping)(ping)臺(tai)梁組成。梯(ti)(ti)段板(ban)(ban)是(shi)一(yi)塊帶踏步的(de)斜板(ban)(ban)，斜板(ban)(ban)支(zhi)承于上、下平(ping)(ping)臺(tai)梁上，底層下端支(zhi)承在地壟墻上。板(ban)(ban)式樓(lou)(lou)梯(ti)(ti)的(de)優點(dian)是(shi)梯(ti)(ti)段板(ban)(ban)下表面平(ping)(ping)整，支(zhi)模簡(jian)單;其缺(que)點(dian)是(shi)梯(ti)(ti)段板(ban)(ban)跨度(du)(du)較(jiao)大(da)時，斜板(ban)(ban)厚(hou)度(du)(du)較(jiao)大(da)，結(jie)構(gou)材料用量較(jiao)多。因(yin)此板(ban)(ban)式樓(lou)(lou)梯(ti)(ti)適用于可(ke)變荷載較(jiao)小、梯(ti)(ti)段板(ban)(ban)跨度(du)(du)一(yi)般不大(da)于3m的(de)情況。