What do the numbers on helicopter landing pads in Los Angeles mean?
Thursday, February 5th, 2009presidentrichardnixon asked: At the top of some buildings in Los? Angels, there are landing pads helix? Ptero have n? Merely a c? Rculo, often 10 o 12. ? Qu? does this mean? I'm guess it has something to do with the weight m Maximum. ? Can anyone give a source that describes this in detail? [...]