木樓梯(ti)

因不(bu)能(neng)防火(huo)，應用(yong)(yong)范圍受到限制(zhi)。有暗步式(shi)和明(ming)步式(shi)兩種。踏(ta)步鑲(xiang)嵌于樓梯(ti)斜梁(liang)(又稱樓梯(ti)幫)凹槽內的為暗步式(shi);釘于斜梁(liang)三角木(mu)上(shang)的為明(ming)步式(shi)。木(mu)樓梯(ti)表面用(yong)(yong)涂料防腐。