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iBoaterer[_2_]

In article ,
says...

On Thu, 10 Jan 2013 16:25:58 -0500, iBoaterer wrote:

In article ,
says...

On Thu, 10 Jan 2013 12:55:36 -0500, iBoaterer wrote:

I have always believed the big concrete buildings on the barrier
islands might end up being island themselves.
Since the 70s and 80s, the pilings might be 40 or 50 feet down so they
will be there but the sand around the building could be gone.

The trouble with the sand being gone is the pilings are using skin
friction to hold the buildings down in a wind event. Without the sand,
no skin friction, and the wind pushes the building over. Not as common
with concrete tilt up or precast, but with pre-engineered metal
buildings, which are built as light as possible, you need that skin
friction, or if shallow foundations they need to be massive enough to
keep the wind from blowing the building over or away!

That is why the pilings are down 40 or 50 feet.

Well, the piles are down deep enough to develop skin friction equal to
the tensile strength of the pile plus a factor of safety.

People who move to Florida and settle right on the water would do well
to take a lesson from a couple of generations of old Floridians. You
don't see them build right on the beach!!!

I am about 5 miles from the beach, behind 2 miles of mangroves. The
surge from that direction will be blunted by nature. I have US41 and
I75 to the east that will stop sheet flow from the everglades. It is a
very effective flood control dam.

Mangroves are good for a LOT of reasons, one is that it will keep the
sand in place.

It also breaks up a surge tide, provides habitat for all kinds of
wildlife and helps with global warming.
I like the mangroves here because they are protected and nobody is
going to build anything else in the bay.

Lot's of fun things to see in a good sized mangrove swamp that isn't
overrun with people!