Signs of the Times - January 2014 - (Page 68)
Modern Sign
Engineering
Are your concepts, standards and build
procedures up to date?
NOAA photo
By Darek Johnson
July 20, 1994 - The Associated
Press (Las Vegas) reported that
engineers were sifting through the
debris of what was once billed
as the world's tallest sign, to determine why the $4-million structure crumpled during a vicious
storm. That day, the enormous,
Las Vegas Hilton sign lay in a
30-ft.-high pile of twisted steel and
rubble, the news service said.
An AP brief said the top quarter
of the 362-ft.-tall sign came crashing to the ground Monday night
as winds raked the Las Vegas
valley. The John Renton Young
Lighting & Sign Co.-fabricated
sign was designed to withstand
winds of 130 mph; 20 mph more
than the Clark county code that
called for 110 mph.
That Monday's winds were
clocked officially at 78 mph.
Linda Kring, a sign company
spokesperson, questioned whether
wind speeds may have been higher
at the top of the sign. "There's the
question about possible wind
shear at the top of the sign," she
said. "What happened at the 362-ft.
height is what we are trying to
determine."
68 SIGNS OF THE TIMES January 2014
O
n the afternoon of July 2,
2012, Accuweather.com reported
on a "super derecho" of violent
thunderstorms that had left a
destructive, 700-mile trail across
the Midwest and Mid-Atlantic
States. The storm tracked from
northern Indiana to the southern
Mid-Atlantic coast. The weather
website reported 91-mph wind
gusts at the Fort Wayne, IN Intl.
Airport and that Ohio, West
Virginia and Virginia governors
had declared states of emergencies.
News sources said the outburst
cut power to millions and killed
13 people. A jet-stream undulation
and record-high temperatures in
the Washington, D.C. area triggered the storm.
"Derecho" is a Spanish adverb
used to indicate straight ahead or
a straight line. In weather jargon,
it describes a widespread and longlife windstorm that accompanies
rapidly moving, straight-line
thunderstorms. Meteorologists say
derecho winds are the product of
downbursts.
The Southern Great Lakes
Derecho of 1998 produced wind
gusts up to 128 mph. It traveled
975 miles (averaging 65 mph) from
southern Minnesota to north central
New York in 15 hours and became
one of the most damaging North
American derechos in history.
Total damage estimates were
close to $300 million.
In May, 2009, a derecho traveled
from southeastern Kansas to the
southern Appalachian Mountains,
more than 1,000 miles. It spawned
45 tornados and caused numerous
injuries and several deaths, with
damage estimates at millions of
dollars.
God only know how many signs
such storms have blown down.
A few weather essentials
Roughly one year ago, I wrote
about weather hazards (see ST,
November 2012, page 12) and
reported the National Oceanic
and Atmospheric Admin. (NOAA)
as saying 2010 had tied for the
warmest year on record, in terms
of land and sea-surface temperatures. In that column, I detailed how
temperature changes affect climate
change, which, in turn, affects the
intensity and frequency of weather
changes and precipitation:
* Warmer oceans melt polar ice.
The warming also increases the
amount of water that evaporates
into the air;
http://www.Accuweather.com
Table of Contents for the Digital Edition of Signs of the Times - January 2014
Signs of the Times - January 2014
Contents
ST Update
Technology Update
Large-Format Design Strategies
Vinyl Apps
Strictly Commercial
Lighting Techniques
The Moving Message
Technology Review - Agfa’s Jeti Titan X
Technology Review - Polytype’s NQ32 UV hybrid printer
Design Matters
New Products
Industry News
GableSigns’ Casino Signs
Dynamic Digital Signage Made Simple
Building Street Cred
Modern Sign Engineering
Advertising index
Editorially speaking
Signs of the Times - January 2014
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