weight distribution

[Newton Hunt]

Standard load bearing for a residential floor is 300 pounds per square
foot.  That is for the whole floor in a room!  COmmercial load factors
are greater than that.  A G2 is likely about 600 pounds on three legs. 
The load is high but residential floors have been supporting 1,000 pound
S&S "D"s for years.  Someone hasn't thought this through to a comparison
of locations.  A dancer can put multiple hundreds of pounds on ball of
their foot when leaping and jumping.  The floor is designed to absorb a
lot of the impact to protect their feet, not the pianos wheels.  Impact
is the factor not load factor.

		Newton