按(an)結構形式(shi)和(he)受力特(te)點樓梯形式(shi)可分為(wei)板式(shi)、梁式(shi)、懸(xuan)挑(剪刀)式(shi)和(he)螺旋式(shi)，前(qian)兩種屬于平(ping)面受力體系(xi)，后兩種則為(wei)空間(jian)受力體系(xi)。

板(ban)(ban)式樓梯(ti)(ti)(ti)是(shi)(shi)(shi)由梯(ti)(ti)(ti)段(duan)板(ban)(ban)、平(ping)臺(tai)(tai)板(ban)(ban)和平(ping)臺(tai)(tai)梁組成(cheng)。梯(ti)(ti)(ti)段(duan)板(ban)(ban)是(shi)(shi)(shi)一塊帶踏(ta)步的斜板(ban)(ban)，斜板(ban)(ban)支承(cheng)于上、下(xia)(xia)平(ping)臺(tai)(tai)梁上，底層(ceng)下(xia)(xia)端支承(cheng)在地壟墻上。板(ban)(ban)式樓梯(ti)(ti)(ti)的優點(dian)是(shi)(shi)(shi)梯(ti)(ti)(ti)段(duan)板(ban)(ban)下(xia)(xia)表(biao)面平(ping)整，支模簡單(dan);其缺點(dian)是(shi)(shi)(shi)梯(ti)(ti)(ti)段(duan)板(ban)(ban)跨度較(jiao)大時，斜板(ban)(ban)厚度較(jiao)大，結構(gou)材料用(yong)量較(jiao)多。因(yin)此板(ban)(ban)式樓梯(ti)(ti)(ti)適用(yong)于可變(bian)荷(he)載較(jiao)小、梯(ti)(ti)(ti)段(duan)板(ban)(ban)跨度一般不大于3m的情況。