Showing posts with label engineering. Show all posts
Showing posts with label engineering. Show all posts

Wednesday, August 24, 2016

Ironworks Suspended Bridge, Tuscany



Ironworks Suspended Bridge, near Abetone, ItalyDear Art Lover,

     A couple of our friends and colleagues from the recent Tuscan symposium also had participated in a symposium for wood carving in the forest near Abetone, Italy (famous for skiing in the winter, blueberry festival in August).  So, quarry owner Marco Nardini took Kumiko Suzuki and me to this forest in Pian di Novello, slightly southwest of Abetone.

     As we wound through the curvy roads through the mountains, Marco asked us if we were afraid of heights.  We said we were game for what he had in mind and thus before we arrived to the symposium site, we found ourselves walking across the “ponte sospeso” (Suspended Bridge) in Comune di San Marcello Pistoiese.

     According to a sign on the site once one crosses the bridge, the longest suspension on a bridge is 1991 meters for the Akashi Kaikyo Bridge in Japan.  It has intermediate supports that span as much as 282 meters!  

     Marco told us that when he was a kid, this footbridge we were on (called the Ironworks Suspension Bridge) was rope and wood slats, with some of those missing.  It was more terrifyingly exciting than it is today, although, of course, much more dangerous and swinging movement.  The original bridge was only intended to be around for a few years.  It was built to aid workers from Popiglio get to the metallurgical plant of Mammiamo Basso quicker, shaving several kilometers [one way] off of their daily trip across the river.

Ironworks Suspended Bridge, near Abetone, Italy
This sign is in front of a small, unassuming park that contains the entrance to the bridge

     The work was started in 1920, and S.M.L. ordered the plant closed in 1931 to focus manufacturing in Campotizzoro.  However, the bridge was so admired by all, and the designer Vincenzo Douglas-Scotti (1877-1937) praised, that the bridge not only remained, but was recreated in the materials one sees today. In 1980 it was reworked and again improved in 2004.  In 2014, solar-powered LED lights were added, making the bridge more beautiful. 

A quote from one of the signs there:
“The Area of the Suspension Bridge

     Since prehistoric times, the valley of the Lima torrent, the greatest tributary of the Serchio River, represented a route for penetrating and crossing the Apennines by nomad hunters and later Roman armies or medieval travelers.  The flat areas, now dominated by the suspension bridge, offered an ideal place for resting or camping, which is evidenced by the recent archaeological finds of worked flints dating back to the Epigravettian period (late epipaleolithic – about 9/10,000 years before Christ and ceramic fragments from the Roman Age, which are now preserved in the Naturalistic Archaeological Centre of the Pistoia Apennine, based in Campotizzoro and the Civic Museum of Natural Sciences and Archaeology of Val di Nievole.

     At that time the Lima torrent, like the Limestre torrent and the other main tributaries offered ideal conditions for setting up numerous hydraulic plants.  Think of the mills built to transform chestnuts into sweet flour, the main local foodstuff, and the pioneering Cini paper mills and many ironworks.

     The Magona Granducale, a Tuscan company regulated by a monopolistic regime for the production of iron in 1704, started with building the plants of Mammiano Basso, which soon became the largest production center in the area of Pistoia.

     When Magona was abolished in 1836, the production of iron and steel in Mammiano continued despite the subsequent numerous transfers of the structures, which finally ended up at the S.M.I. (Italian Metallurgical Company) at the end of the nineteenth century.

     It was during this period that the engineer Vicenzo Douglas-Scotti, who designed the bridge, was called upon to manage the plant.  Today, the area continues to be of great interest for its hydroelectric production, which is also implemented by using part of the canalizations and pipes that were originally created for the Magona plants.”

The Ironworks Suspension Bridge is free to walk across and admire the views.

Peace,
Kelly


P.S.  I woke this morning to an e-mail from my father asking if I was safe from the earthquake.  I was unaware of another one in Italy.  It occurred during the night last night and it looks devastating.  It was south of Tuscany, but tremendous.  As I write this, rescue workers are still searching to save anyone under the rubbish that they can. 

Ironworks Suspended Bridge, near Abetone, Italy

Ironworks Suspended Bridge, near Abetone, Italy

Ironworks Suspended Bridge, near Abetone, Italy
Marco and Kumiko enjoy the Ironworks Suspended Bridge

Ironworks Suspended Bridge, near Abetone, Italy

Ironworks Suspended Bridge, near Abetone, Italy

Ironworks Suspended Bridge, near Abetone, Italy

Ironworks Suspended Bridge, near Abetone, Italy

Ironworks Suspended Bridge, near Abetone, Italy

Ironworks Suspended Bridge, near Abetone, Italy metalwork, screws

Ironworks Suspended Bridge, near Abetone, Italy

Friday, January 25, 2013

Mobius Strip Sculpture

Cari Amici (Dear Friends),

Many different ideas come together to form a single idea for a work of art. That is the case with Möbius Mouth. I bought this particular piece of creme Rattlesnake Limestone from another Texas carver that I know. This stone is named after the shape of the fossil shells embedded in the limestone - they resemble the rattle on the tail of that well-known snake. When I have a busy patterned stone, I want to carve a simple shape to show off the personality of the stone. Mathematics, in one form or another, never seems to be far from my mind, so I decided to sculpt a Möbius Strip in the shape of an open mouth as part of my Lips Series.

”Möbius Mouth” by Kelly Borsheim

Take a long strip of paper or a ribbon, such as 1” wide by 10” long. As you pick up one end, give it a half twist before attaching it to the other end to form a ring. You will now have a Möbius Strip, which means that you may "travel" from one side of the ring to the other without crossing an edge. [Take your pencil and mark a point on the flat surface of the paper; anywhere, just not on the edge, but in the center makes for a better demonstration. Draw a line with your pencil in one direction along the length of the surface. Keep on until you reach your starting point. You will discover that your pencil has traveled on “both” sides of the paper without breaking your line! THAT is the genius of the half twist.]

Named for German mathematician and astronomer August Ferdinand Möbius (1790-1868), a Möbius Strip only has one side and one edge. I understand that engineers have used a Möbius Strip in the belt of a car engine, for example. The twist allows the belt to wear out evenly and have a longer, more effective life.

My 2-part stone sculpture Möbius Mouth is part of my "Lips Series." The mouth has a heart shape in the negative space inside the lips. He is carved from a Rattlesnake Limestone from Texas, named after the shape of the shell fossils in the stone. The triangular base enhances the idea of the mathematics of the Möbius lips and is carved from Henna Limestone from Canada. This rich brick red colored stone is saturated with golden fossil patterns in which I find I can lose myself for hours while staring at them. I hope you enjoy this original artwork. He is absolutely one of a kind!

Limestone sculpture may be displayed indoors or out. The top piece rests on a stainless steel pin (so no rust) that is permanently mounted into the red stone base. This also allows you to turn the top stone for a different view each day, if you like. Both stones have been sealed for protection from finger oils and the environment, so please – touch and enjoy!

The price of this sculpture is not listed below. While prices of my available works are posted on my Web site pricelist, in this case, I wanted to encourage you to take a look at my anniversary celebration that is happening now. If you add this or many other sculptures to your art collection (or start one!), check out how much more art you may acquire…thank you for reading and for your art appreciation.

"Möbius Mouth"

Rattlesnake Limestone (Texas)
with Henna Limestone (Canada)
one-of-a-kind
17" h x 22" w x 8.5" d
by Kelly Borsheim