按結構形式(shi)和(he)受(shou)力(li)特點樓梯形式(shi)可(ke)分為(wei)板式(shi)、梁式(shi)、懸挑(剪(jian)刀)式(shi)和(he)螺旋式(shi)，前(qian)兩(liang)種屬(shu)于平面受(shou)力(li)體系，后(hou)兩(liang)種則為(wei)空(kong)間受(shou)力(li)體系。

板(ban)(ban)(ban)(ban)(ban)(ban)式(shi)樓梯(ti)(ti)(ti)(ti)是(shi)由梯(ti)(ti)(ti)(ti)段板(ban)(ban)(ban)(ban)(ban)(ban)、平臺(tai)板(ban)(ban)(ban)(ban)(ban)(ban)和(he)平臺(tai)梁(liang)組成。梯(ti)(ti)(ti)(ti)段板(ban)(ban)(ban)(ban)(ban)(ban)是(shi)一(yi)(yi)塊帶踏步的斜(xie)板(ban)(ban)(ban)(ban)(ban)(ban)，斜(xie)板(ban)(ban)(ban)(ban)(ban)(ban)支(zhi)承(cheng)(cheng)于上(shang)、下平臺(tai)梁(liang)上(shang)，底層下端(duan)支(zhi)承(cheng)(cheng)在地壟墻上(shang)。板(ban)(ban)(ban)(ban)(ban)(ban)式(shi)樓梯(ti)(ti)(ti)(ti)的優點是(shi)梯(ti)(ti)(ti)(ti)段板(ban)(ban)(ban)(ban)(ban)(ban)下表面平整，支(zhi)模(mo)簡單;其缺點是(shi)梯(ti)(ti)(ti)(ti)段板(ban)(ban)(ban)(ban)(ban)(ban)跨度(du)較大(da)(da)時，斜(xie)板(ban)(ban)(ban)(ban)(ban)(ban)厚度(du)較大(da)(da)，結構材料用量較多。因此板(ban)(ban)(ban)(ban)(ban)(ban)式(shi)樓梯(ti)(ti)(ti)(ti)適用于可變荷載較小、梯(ti)(ti)(ti)(ti)段板(ban)(ban)(ban)(ban)(ban)(ban)跨度(du)一(yi)(yi)般不大(da)(da)于3m的情況。