木樓梯

因不能防火，應用范圍受到限制。有暗步(bu)式(shi)(shi)和明步(bu)式(shi)(shi)兩種。踏步(bu)鑲嵌于樓(lou)(lou)梯(ti)斜(xie)梁(又稱樓(lou)(lou)梯(ti)幫)凹槽內的為暗步(bu)式(shi)(shi);釘(ding)于斜(xie)梁三角木(mu)上(shang)的為明步(bu)式(shi)(shi)。木(mu)樓(lou)(lou)梯(ti)表面(mian)用涂料防腐。