木樓(lou)梯

因不能(neng)防(fang)火，應用范圍受(shou)到限制(zhi)。有暗步式(shi)(shi)和明(ming)步式(shi)(shi)兩種。踏步鑲嵌于樓(lou)梯斜梁(liang)(又稱(cheng)樓(lou)梯幫)凹槽內(nei)的為(wei)暗步式(shi)(shi);釘于斜梁(liang)三角木(mu)上的為(wei)明(ming)步式(shi)(shi)。木(mu)樓(lou)梯表(biao)面用涂(tu)料防(fang)腐。