In 2005 at Xi'an Botanical Garden, we proved that a Victoria
pad could bear the weight of a lady and two children! Let me
tell you how we did it.
I had heard, even before I worked on the cultivation of Victoria,
that someone calculated that a pad of Victoria could bear 75
kg (165 #) by "the experiment of overspread sand".
When I set a child weighing 25 kg (55 #) on the pad, the place
under the buttocks of child broke. Why could the pad bear 75
kg but not a child weighing 25 kg?
Analyzing the reasons, I thought "In the experiment of
overspread sand, the sand was distributed evenly, but when the
child sat on the pad, he only touched the pad with his buttocks
and feet -- his weight pressed on only 400 cm2
(62 "2) of the pad. The main reason
for the damage to the pad was that pressure was too great on
one part of the pad, but that should not affect the overall weight-bearing
capacity." So, I devised a method of distributing the pressure.