Helipad Markings?

[dangitdoug]

I have seen numbers inside the circles and triangles on helipads. Any idea what these numbers represent? They do not coincide with specific buildings as I have seen several buildings with the same numbers on them. They also do not match up to the amount of floor on any building. Any ideas?

Doug K

[w6pix]

It's the weight rating for the helipad. Used usually for rooftop pads, but you might see it on concrete pads as well.