You see?  I am still learning. I guess it is for buildings without a sprinkler system.  DRY Stand Pipe is the key words.  Dry = no water.  My building does not have a sprinkler system but I can see the valve inside the water hose box.  So does mine have water or not?  If it does have water, where does it get the pressure?  The hot/cold water for the building got pumps but that are not for the water hoses, I think.  Mahalo.