Joseph Bazalgette

Sir Joseph William Bazalgette, CB (/ˈbæzəldʒɛt/; 28 March 1819 – 15 March 1891) was a 19th-century English civil engineer. As chief engineer of London's Metropolitan Board of Works his major achievement was the creation (in response to the Great Stink of 1858) of a sewer network for central London which was instrumental in relieving the city from cholera epidemics, while beginning to clean the River Thames.[1]

Joseph Bazalgette in the 1870s

Early life

Bazalgette was born in Hill Lodge, Clay Hill, Enfield, London, the son of Joseph William Bazalgette (1783–1849), a retired Royal Navy captain, and Theresa Philo, born Pilton (1796–1850), and was the grandson of a French Protestant immigrant who had become wealthy.[2]

He began his career working on railway projects, articled to noted engineer Sir John MacNeill and gaining sufficient experience (some in China) in land drainage and reclamation works for him to set up his own London consulting practice in 1842. By the time he married his wife, Maria Kough, in 1845, Bazalgette was deeply involved in the expansion of the railway network, working so hard that he suffered a nervous breakdown two years later.

While he was recovering, London's Metropolitan Commission of Sewers ordered that all cesspits should be closed and that house drains should connect to sewers and empty into the Thames. As a result, a cholera epidemic (1848–49) killed 14,137 Londoners.

Bazalgette was appointed assistant surveyor to the Commission in 1849, taking over as Engineer in 1852, after his predecessor died of "harassing fatigues and anxieties." Soon after, another cholera epidemic struck, in 1853, killing 10,738. Medical opinion at the time held that cholera was caused by foul air: a so-called miasma. Physician Dr John Snow had earlier advanced a different explanation, which is now known to be correct: cholera was spread by contaminated water. His view was not then generally accepted.

Championed by fellow engineer Isambard Kingdom Brunel, Bazalgette was appointed chief engineer of the Commission's successor, the Metropolitan Board of Works, in 1856 (a post which he retained until the MBW was abolished and replaced by the London County Council in 1889). In 1858, the year of the Great Stink, Parliament passed an enabling act, in spite of the colossal expense of the project, and Bazalgette's proposals to revolutionise London's sewerage system began to be implemented. The expectation was that enclosed sewers would eliminate the stink ('miasma'), and that this would then reduce the incidence of cholera.

Sewer works
The old Abbey Mills Pumping Station
Interior of the Octagon at Crossness Pumping Station showing its elaborate decorative ironwork
Drainage reports by Bazalgette in the Institution of Civil Engineers' archives

At that time, the River Thames was little more than an open sewer, empty of any fish or other wildlife, and an obvious health hazard to Londoners.

Bazalgette's solution (similar to a proposal made by painter John Martin 25 years earlier) was to construct a network of 82 miles (132 km) of enclosed underground brick main sewers to intercept sewage outflows, and 1,100 miles (1,800 km) of street sewers, to intercept the raw sewage which up until then flowed freely through the streets and thoroughfares of London.

The plan included major pumping stations at Deptford (1864) and at Crossness (1865) on the Erith marshes, both on the south side of the Thames, and at Abbey Mills (in the River Lea valley, 1868) and on the Chelsea Embankment (close to Grosvenor Bridge; 1875), north of the river. The outflows were diverted downstream where they were collected in two large sewage outfall systems on the north and south sides of the Thames called the Northern and Southern Outfall sewers. The sewage from the Northern Outfall sewer and that from the Southern Outfall were originally collected in balancing tanks in Beckton and Crossness, respectively, before being dumped, untreated, into the Thames at high tide.[3]

The system was opened by Edward, Prince of Wales in 1865, although the whole project was not actually completed for another ten years.

Partly as a result of the Princess Alice disaster, extensive sewage treatment facilities were built to replace the balancing tanks in Beckton and Crossness in 1900.

Bazalgette's foresight may be seen in the diameter of the sewers. When planning the network he took the densest population, gave every person the most generous allowance of sewage production and came up with a diameter of pipe needed. He then said 'Well, we're only going to do this once and there's always the unforeseen' and doubled the diameter to be used. His foresight allowed for the unforeseen increase in population density with the introduction of the tower block; with the original, smaller pipe diameter the sewer would have overflowed in the 1960s, rather than coping until the present day as it has.

The unintended consequence of the new sewer system was to eliminate cholera everywhere in the water system, whether or not it stank. The basic premise of this expensive project, that miasma spread cholera infection, was wrong. However, instead of causing the project to fail, the new sewers succeeded in virtually eliminating the disease by removing the contamination. Bazalgette's sewers also decreased the incidence of typhus and typhoid epidemics.[4]

Bazalgette's capacity for hard work was remarkable; every connection to the sewerage system by the various Vestry Councils had to be checked and Bazalgette did this himself and the records contain thousands of linen plans with handwritten comments in Indian ink on them "Approved JWB", "I do not like 6" used here and 9" should be used. JWB", and so on. It is perhaps not surprising that his health suffered as a result. The records are held by Thames Water in large blue binders gold-blocked reading "Metropolitan Board of Works" and then dated, usually two per year.

Private life

Bazalgette lived at 17 Hamilton Terrace, St John's Wood, north London, for some years. Before 1851, he moved to Morden, then in 1873 to Arthur Road, Wimbledon, where he died in 1891, and he was buried in the nearby churchyard at St Mary's Church.

In 1845 at Westminster, he married Maria Kough (1819–1902). Lady Bazalgette died at her residence in Wimbledon on 3 March 1902.[5] They had children including:

  1. Joseph William, born 20 February 1846
  2. Charles Norman born 3 March 1847
  3. Edward, born 28 June 1848
  4. Theresa Philo, born 1850
  5. Caroline, born 17 July 1852
  6. Maria, born 1854
  7. Henry, born 14 September 1855
  8. Willoughby, born 1857
  9. Maria Louise, born 1859
  10. Anna Constance, born 3 December 1859
  11. Evelyn, born 1 April 1861

Awards and memorials
Memorial to Sir Joseph Bazalgette on Victoria Embankment
Detail of Hammersmith Bridge, designed by Bazalgette

Bazalgette was knighted in 1875, and elected President of the Institution of Civil Engineers in 1883.

A Greater London Council blue plaque commemorates Bazalgette at 17 Hamilton Terrace in St John's Wood in North London,[6] and he is also commemorated by a formal monument on the Victoria Embankment by the River Thames in central London. In July 2020, it was announced that a new public space west of Blackfriars Bridge, formed following construction of the Thames Tideway Scheme, would be named the Bazalgette Embankment.[7]

Dulwich College has a scholarship in his name either for design and technology[8] or for mathematics and science.[9]

Other works

Notable descendants
gollark: I blatantly stole it from helloboi.
gollark: I may be referred to as car/cdr if desired.
gollark: The problem with spaces is that you can’t actually see them. So you can’t be sure they’re correct. Also they aren’t actually there anyway - they are the absence of code. “Anti-code” if you will. Too many developers format their code “to make it more maintainable” (like that’s actually a thing), but they’re really just filling the document with spaces. And it’s impossible to know how spaces will effect your code, because if you can’t see them, then you can’t read them. Real code wizards know to just write one long line and pack it in tight. What’s that you say? You wrote 600 lines of code today? Well I wrote one, and it took all week, but it’s the best. And when I hand this project over to you next month I’ll have solved world peace in just 14 lines and you will be so lucky to have my code on your screen <ninja chop>.
gollark: Remove the call stack and do trampolining or something?
gollark: Yes, I think this is possible.

References
  1. Halliday, Stephen (2013). The Great Stink of London: Sir Joseph Bazalgette and the Cleansing of the Victorian Metropolis. The History Press. ISBN 978-0752493787.
  2. Tailor Louis Bazalgette's account for the Prince Regent since the 1770s was guaranteed by Parliament and when paid after he succeeded as king George IV of the United Kingdom was worth in modern terms (2014) about two million pounds: BBC Radio 4, at https://www.bbc.co.uk/sounds/play/b04hvy0l
  3. "How the system worked". Crossness Engines. Archived from the original on 2 October 2012.
  4. "'Dirty Old London': A History of the Victorians' Infamous Filth". NPR. 12 March 2015. Archived from the original on 23 June 2017. Retrieved 13 March 2015. [the famous great sewer network of the mid-19th century] basically took away the possibility of wholesale cholera epidemics in the city, typhus and typhoid – they all were reduced.
  5. "Obituary – Lady Bazalgette". The Times (36706). London. 4 March 1902. p. 8.
  6. "Bazalgette, Sir Joseph William (1819–1891)". English Heritage. Archived from the original on 1 August 2011. Retrieved 20 October 2012.
  7. "Tideway honours Victorian pioneer". The Construction Index. 28 July 2020. Retrieved 28 July 2020.
  8. The Master's Report to the Governors for the School Year 2004–2005 (PDF) (Report). Dulwich College. p. 7. Archived from the original (PDF) on 17 December 2007.
  9. The Master's Report to the Governors for the School Year 2006–2007 (PDF) (Report). Dulwich College.

Further reading
Professional and academic associations
Preceded by
James Brunlees		 President of the Institution of Civil Engineers
December 1883 – December 1884		 Succeeded by
Frederick Bramwell
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.