engineering

Southern Outfall Sewer

Southern Outfall Sewer is a engineering topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Southern Outfall Sewer rather than just read about it. In short: The Southern Outfall Sewer is a major sanitary sewer taking sewage from the southern area of central London to Crossness in south-east London. Flows from three interceptory sewers combine at Greenwich pumping station and then run under Greenwich, Woolwich, Plumstead and across Erith Marshes.

Key takeaways

Southern Outfall Sewer belongs to engineering; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Southern Outfall Sewer to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Southern Outfall Sewer from memory before moving on to harder problems.

Reference excerpt

The Southern Outfall Sewer is a major sanitary sewer taking sewage from the southern area of central London to Crossness in south-east London. Flows from three interceptory sewers combine at Greenwich pumping station and then run under Greenwich, Woolwich, Plumstead and across Erith Marshes. The Outfall Sewer was designed by Joseph Bazalgette after an outbreak of cholera in 1853 and the Great Stink of 1858.

History By 1859, the Metropolitan Board of Works had been set up and taken over the work of the Metropolitan Commission of Sewers. The board issued tenders for the construction works and the contract for the Southern outfall was let to Rowland Brotherhood. Work started on the southern outfall sewer in 1860 and it was finally opened on 4 April 1865 by H.R.H. the Prince of Wales. Until this time, central London's drains were built primarily to cope with rainwater, and the growing use of flush toilets frequently meant these became overloaded, flushing mud, shingle, sewage and industrial effluent into the River Thames. Bazalgette's London sewerage system project included the construction of intercepting sewers north and south of the Thames; the Northern Outfall Sewer diverts flows away from the Thames north of the river.

Route South of the river, three major interceptor sewers were constructed:

The high-level sewer starts at Herne Hill, and heads eastward under Peckham and New Cross to a pumping station at Deptford. The middle-level sewer starts on Balham Hill and runs under Clapham High Street, under Stockwell and Brixton, through Camberwell to Deptford. The low-level sewer begins in Putney and runs through Battersea, Vauxhall, and under the Old Kent Road and Bermondsey to Deptford. At Deptford pumping station the sewage is lifted by 18.9 ft (5.76 m) to the next section of the sewer which then runs east under Greenwich and Woolwich. From Plumstead to Crossness Pumping Station, the covered sewer forms the southern boundary of Thamesmead and has been landscaped as an elevated footpath called the Ridgeway (similar to The Greenway built over the Northern Outfall Sewer).

See also London sewer system Thames Tideway Tunnel

References

External links Crossness Pumping Station

Illustrations

Worked examples

Example 1 — a first encounter with Southern Outfall Sewer

Start with the simplest possible case. Write down what Southern Outfall Sewer claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In engineering, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Southern Outfall Sewer before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Southern Outfall Sewer ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Southern Outfall Sewer

In research: Southern Outfall Sewer appears in engineering research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Southern Outfall Sewer in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Southern Outfall Sewer is common in secondary-school and first-year university syllabi. It links to neighbouring topics London building and structure stubs, London water infrastructure, Subterranean London, so understanding it makes those chapters shorter.
In everyday life: Look for Southern Outfall Sewer outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Southern Outfall Sewer in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Southern Outfall Sewer means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Southern Outfall Sewer out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Southern Outfall Sewer in simple terms?

Why does Southern Outfall Sewer matter?

Because it connects several engineering ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Southern Outfall Sewer?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Southern Outfall Sewer.