Stairway into Underground Vault
Stairway into Underground Vault
(OP)
I'm trying to design a new stairway to an existing underground pressure reducing vault. I was wondering if any of you all know of any pre-cast type of stairways similar to a cellar entry such as this that could be used in a H-20 area:
http://www.sheaconcrete.com/bulk_stairs.aspx
The main thing keeping me from using this type of product is that they are not designed to have a flat doors on top that can withstand H-20 loading.
I could have our structural team design something that would work but I want to explore the Pre-Cast alternative.
Thanks
http://www.sheaconcrete.com/bulk_stairs.aspx
The main thing keeping me from using this type of product is that they are not designed to have a flat doors on top that can withstand H-20 loading.
I could have our structural team design something that would work but I want to explore the Pre-Cast alternative.
Thanks





RE: Stairway into Underground Vault
RE: Stairway into Underground Vault
If you could figure out a way to unlatch the hatch,Bilco makes H20 hatches. http://www.bilco.com/home.asp?country=93
As a caution, even their H20 rated hatches can't take anything more than occasional traffic.