木樓梯

因不能防火，應用(yong)(yong)范(fan)圍受到限制(zhi)。有(you)暗步(bu)(bu)(bu)式和明(ming)步(bu)(bu)(bu)式兩(liang)種(zhong)。踏步(bu)(bu)(bu)鑲(xiang)嵌于樓(lou)梯(ti)(ti)斜梁(又稱樓(lou)梯(ti)(ti)幫)凹槽內的為暗步(bu)(bu)(bu)式;釘(ding)于斜梁三角木上的為明(ming)步(bu)(bu)(bu)式。木樓(lou)梯(ti)(ti)表面(mian)用(yong)(yong)涂(tu)料防腐。