On Wed, 24 Nov 2010 21:59:41 -0800 (PST), Harry K
wrote:

On Nov 24, 1:42Â*pm, "Stormin Mormon"
wrote:
The OP said it was a requirement of the state agency he's in. And the
OP said he didn't know beyond that.

--
Christopher A. Young
Learn more about Jesus
Â*www.lds.org
.

"Evan" wrote in message

...
On Nov 24, 11:35 am, Harry K wrote:



I haven't seen it mentioned and may have missed something here
but...

Aluminum is good priced scrap metal. Why not replace it with
galvanised iron/steel? Not much money in that and cheaper

Harry K

Because traffic signs (and therefore reflectors also) are made out
of aluminum sheet goods cut to whatever size and shape needed
for the specific application required and then a reflectorized
applique sheet which covers the entire surface is applied...

Galvanized steel would not last the years and years required of
a traffic sign... Â*The applique graphics will fade from exposure to
the sun long before anything happens to the aluminum sheet
which would be recycled and made into other things... Â*A sign
panel made of sheet steel would begin to rust even with a
coating on it...

~~ Evan

Yep, I was going to mention that but figured someone else would?
As to galvanised not lasting? Seems the aluminum doesn't either
except in scrap yards .

Harry K
The guard rail they are fastening it to is hot dip galvanized STEEL.
Why not the reflector?