From: snidely.too@gmail.com   
      
   On Thursday or thereabouts, JF Mezei declared ...   
   > Melon will put a 2 layer steel floor below the OLM, and the top layer   
   > will have perforations to let water flow up like a shower head.   
   >   
   > Would it be correct to state that the water would need to be at slightly   
   > higher PSI than the pressiure exerted by the thrust of engines onto the   
   > steel plates in order for water to flow out of the holes? If the water   
   > is at insufficient pressure, it is the thrust exhaust that would flow   
   > into the holes and push water back up to the pumps/tanks?   
   >   
   > Considering the gazillions pounds of thrust generated by 33 Raptors, is   
   > the PSI needed to push water up against thrust realistic?   
   >   
   > Can such pressure be achieved with pumps? Or need to store water into   
   > high pressure tank with liquid nitrogen to pressurize it?   
   >   
   > If you have such high pressure inside the steel "floor" to ensure water   
   > can counter pressure from engine thrust, is there a danger the steel   
   > plates will simply come apart?   
      
   I'm no mechanical or structural engineer, but steel has a very high   
   tensile strength.   
      
   Also, a fresh set of high pressure tanks has been spotted near the   
   launch site.   
      
   /dps   
      
   --   
   https://xkcd.com/2704   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)