文學城: 熱點討論主題

那是那是,版主說的對。我過去都是瞎說,人家都有,簡單明了

來源: 收數狗腿子 於 2024-02-04 19:47:21 [舊帖] [給我悄悄話] 本文已被閱讀:次

https://bbs.wenxuecity.com/fdcj/1811108.html


 

https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.25

https://www.osha.gov/laws-regs/regulations/standardnumber/1917/1917.120#:~:text=Riser%20height%20shall%20be%20from,shall%20be%20straight%20leading%20edges.&text=Stair%20landings%20shall%20be%20at,(50.8%20cm)%20in%20depth.

 

 


 

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