木樓梯

因(yin)不(bu)能防火，應用范圍受到限制(zhi)。有(you)暗(an)步(bu)(bu)式(shi)(shi)和明步(bu)(bu)式(shi)(shi)兩種(zhong)。踏步(bu)(bu)鑲嵌于(yu)樓(lou)梯(ti)斜(xie)梁(又稱樓(lou)梯(ti)幫)凹槽內(nei)的為暗(an)步(bu)(bu)式(shi)(shi);釘(ding)于(yu)斜(xie)梁三(san)角木上(shang)的為明步(bu)(bu)式(shi)(shi)。木樓(lou)梯(ti)表面用涂料防腐。