大傻做事粗中有细。我问别人的时候,别人都说想都没想过。。。 
 
Hi, 
 
try to divide the area of footing (use square feet) with 500lb. if the result is less than 40 pound per square feet, it is safe.  
 
my reply: 
The piano is 5'x2', 500/10 = 50 > 40, so it unsafe?? I see many people just put the piano on the floor. 
 
Sent from my iPhone 
 
his reply: 
If it is 50 psf. I think it is OK. Because we usually design additional 15 psf for super dead load. So the total limit become 55 psf. 
  
 
回复  大傻_  
 
 
    你那个PHD朋友莫明其妙。他听说过谁家地板被钢琴压垮?并且房子受力问题,有死 
载( ... 
buhuyou 发表于 2011-7-7 21:17    |