Season 2 – Episode 02: Alcatraz

Do you think you’d be able to escape from Alcatraz? This episode we discuss the 36 men who tried (including a few who might have succeeded), as well as the construction and history of this infamous prison.

The island of Alcatraz is known by many as “The Rock” and for good reason. Before being the site of the infamous US federal penitentiary from 1934 to 1963 this 9 hectare island was used as a US military prison as far back as 1861 and as a military fort beginning in the early 1800s. Through its entire history nothing has ever been able to grow and no freshwater has ever been found, even when digging wells dozens of metres Ito the stone ground, meaning that for over 150 years any supplies needed had to be shipped in by boat.

When the first prisoners were held on Alcatraz the island was still primarily a fortification holding only up to 30 prisoners at a time, up until 1899 when this skyrocketed to 400 including military prisoners from the US Civil War, the US’s involvement in Southeast Asia, and the Mexican Border Wars. Over the next decade military prison infrastructure would be built until a permanent prison building was constructed in 1910. This however was not the Alcatraz we think of today, being a relatively low security prison built out of wood with frequent escape attempts. 

But by 1913 the image of a military prison so close to the vibrant commercial and residential areas of San Fransisco was a bad look, with many feeling it gave the idea that such a large military prison suggested that the US military included a high number of misbehaving officers. Many ideas were floated for what to do with this island, including suggestions to use it for a west-coast equivalent of the Statue of Liberty, but ultimately in 1933 it was transferred to the Department Of Justice for use as a federal prison.

A lot of work would need to be accomplished to ensure the safety of the residents of nearby San Fransisco. This mostly wooden prison would be rebuilt with hacksaw proof steel bars and grates on every cell, door, and window, and all the wood construction would be replaced with concrete. Guard towers would be built with visibility of prisoners throughout the facility and equipped with tear gas and mounted guns, and Alcatraz would be outfitted with new technology such as mechanical locking systems, making it one of the first instances of using a control panel rather than individual locks and keys to open and close each cell. 

On top of these impressive security measures the location of the island itself would be a massive deterrent for escape attempts. A whole 2km off the coast of California the water surrounding the island was extremely cold, had a tide that would pull potential escapees back into the ocean, and if that weren’t enough the water was also home to great white sharks. This however did not stop 36 prisoners from participating in a total of 14 escape attempts, including one final attempt in 1962 when 3 prisoners successfully made it off the island in rafts they’d built out of raincoats. While they are presumed to have drowned their bodies were never found, which in addition to the millions of dollars needed in repairs would contribute to the final closing of the prison in 1963.

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Image Gallery

Alcatraz Island 1934 | Alcatraz Aerial Cell | Escape attempt paper mache heads | Al Capone | Cell block

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Learn more at: MeasuredInMetric.com | Facebook | Instagram

Music by: John Julius – Bandcamp.com

Edited by: Astronomic Audio

Season 2 – Episode 01: The Sydney Harbour Bridge

We spent most of our between-seasons break in Australia, so naturally the subject of our first episode of the season should be too! This engineering monument is the world’s widest and heaviest arch bridge and the world’s 7th longest spanning, it’s on the Australian National Heritage List and the New South Wales Heritage Register: the Sydney Harbour Bridge.

This iconic bridge connecting Sydney’s Central Business District with the north shore is affectionally known as “The Coathanger” and “The Iron Lung” and has been helping residents of Sydney cross the Sydney harbour since its construction in 1932. Prior to the construction of this bridge the only route across the harbour was by ferry, and by 1927 the use of these ferries had peaked at 47 million passengers annually, which was quickly more than halved when the bridge was constructed. Although the ferry still operates today the bridge is the primary mode of transportation, with its 6 lanes of traffic plus tramlines and bike paths transporting more than 150,000 vehicles, 2004 trains, and 1,650 bicycles every single day.

The bridge was originally proposed by English born architect Francis Greenway in 1815, but official planning would not begin until nearly a century later in 1914 when John Bradfield was appointed Chief Engineer of the Sydney Harbour Bridge and Metropolitan Railway Construction. Bradfield’s plans were heavily inspired by the Hell’s Gate Bridge in New York City and follows a similar design, right down to the four massive pylons situated on the ends of the bridge that exist solely as engineering placebos to help the public feel more comfortable using the arch bridge. After the Australian government passed the Sydney Harbour Bridge Act in 1922 bids for this project were opened up globally garnering 20 proposals from 6 different firms, ultimately being awarded to English firm Dorman Long & Company. 

Construction cost for this project was one of the lowest we’ve ever looked at on the podcast, just $6.25 Million AUD or roughly $13.5 Million AUD today which is pretty cheap as far as bridges go! Whether this was a good deal or not this bridge had a more than 50 year long montage taking until 1988 to be paid off via the $3 AUD toll for crossing the bridge, which is today used to fund the future Sydney Harbour Tunnel project. Despite the relatively low cost of constructing the bridge annual maintenance currently costs approximately $5 Million AUD. 

“You can see it from every corner of the city, creeping into frame from the oddest angles like an uncle trying to get into every snapshot” – Bill Bryson

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Image Gallery

Bridge construction diagram | Vivian on site | The infamous credit plaque | Bridge side view | Bridge side view with Sydney Opera House | Bridge construction photo | Bridge overhead photo | One of four “placebo” pylons | 1988 plaque awarded by American Society of Civill Engineers | Keystone replica

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Learn more at: MeasuredInMetric.com | Facebook | Instagram

Music by: John Julius – Bandcamp.com

Edited by: Astronomic Audio

Annnnd… We’re Back!

Hello, Met… metricians? This is John letting you know that Measured in Metric Season 2 is officially well underway. Vivian and I are back from Australia and practicing our best social distancing measures. We really, really appreciate you sticking with us and hope that you’re as excited as we are for Season Two!

Vivian meets the ‘roos

One of my New Years Resolutions is to make better use of this website. I learned a bit of HTML and CSS then somehow managed to launch a WordPress server without actually knowing anything about computers, and by the time it was up and running I wanted nothing to do with it. But no more! From now on, when we say we will post something to the website, we will definitely try to remember that we said we would.

Shrimp on the Bar-B

Anyhow. Season Two. We hope you like it.

PS: I rarely talk about the music I’ve written for MiM and other podcasts, but I DO take some pride in it. If you like the sounds you hear, please feel free to check out my personal Bandcamp page at http://john-r-julius.bandcamp.com. All of the music there is written and performed/programmed by me and is available for you to download, reuse, remix, etc. on the most permissive Creative Commons Attribution license.