按結(jie)構形式和受(shou)力特點樓梯(ti)形式可分(fen)為板(ban)式、梁式、懸挑(剪刀)式和螺(luo)旋式，前兩(liang)種屬(shu)于平面受(shou)力體系(xi)，后兩(liang)種則為空(kong)間受(shou)力體系(xi)。

板(ban)(ban)(ban)式(shi)樓梯(ti)是(shi)由梯(ti)段板(ban)(ban)(ban)、平(ping)臺板(ban)(ban)(ban)和平(ping)臺梁組成。梯(ti)段板(ban)(ban)(ban)是(shi)一塊帶踏步的斜(xie)(xie)板(ban)(ban)(ban)，斜(xie)(xie)板(ban)(ban)(ban)支承(cheng)于(yu)上、下平(ping)臺梁上，底層下端支承(cheng)在(zai)地壟(long)墻上。板(ban)(ban)(ban)式(shi)樓梯(ti)的優點是(shi)梯(ti)段板(ban)(ban)(ban)下表面平(ping)整，支模簡單;其缺點是(shi)梯(ti)段板(ban)(ban)(ban)跨(kua)度較大(da)時，斜(xie)(xie)板(ban)(ban)(ban)厚度較大(da)，結構材料(liao)用量(liang)較多(duo)。因(yin)此(ci)板(ban)(ban)(ban)式(shi)樓梯(ti)適用于(yu)可變(bian)荷載較小(xiao)、梯(ti)段板(ban)(ban)(ban)跨(kua)度一般不大(da)于(yu)3m的情況。