On Sep 24, 5:42 pm, Henry <9...@insidejob.gov> wrote:
> Hi Rob. We had this exchange a while back.
> > Take any object, a block or a stick for example. Hold it at
> > an angle, then drop it. Does it fall over sideways, or does it
> > travel straight to the ground at the same angle ?
>
> You never did explain how your falling blocks and sticks
> "prove" that a tall building won't topple sideways if
> supports on only one side are destroyed.
I pointed you multiple times to "soft story collapse"
explanations. These are extremely common in quakes.
My understanding of soft story failures is as follows:
A storefront or garage creates a weak spot in the
structure. When the soft spot fails, the structure will
initially tilt a little as the load is distributed to the
remaining undamaged supports. With the increased
load, the remaining supports also fail, causing
the tilted structure to drop straight down.
This is different from dropping a tree, where a
"hinge" is left in place for the tree to pivot on.
Buildings are designed to distribute load as
evenly as possible to their vertical supports,
so it's not that uncommon to see near simultaneous
failures of additional supports after the first few
go out.
I work in a different field of engineering, so I suggest
you ask one of these many structural engineers
you say you are in touch with why so many buildings
in a quake drop straight down after an initial failure
on one side of the building enev when there are
large horizontal seismic motions.
You're welcome for the explanation. Just about any
Californian could have explained this to you.
Won't it be nice as you, your so called truth movement
and Bush grow irrelevant together over the years ?