donny says it's easy
MARK SONNENFELD
what happens is
the reason why they have a roof
tank is if everyone flushing their toilet
the same time the pressure from
the street can't boost it up
it's easier to boost it up to the tank
and have the pressure from the tank
coming down
it's easy it's
how the water gets to the world
trade center the street pressure
is at usually sixty to a hundred pounds
the world trade center's how many stories?
hundred twenty?
hundred ten?
take half
that's pumped say to the fiftieth floor
a roof tank on the fiftieth floor they call
it a booster pump gets
water pumped to the hundred tenth floor
where another roof tank tops the pressure
that is gravity fed down with pressure
reducing
valves
very
easy
