engineering

Water stop

Water stop 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 Water stop rather than just read about it. In short: A water stop or water station on a railroad is a place where steam trains stop to replenish water. The stopping of the train itself is also referred to as a "water stop".

Key takeaways

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

Reference excerpt

A water stop or water station on a railroad is a place where steam trains stop to replenish water. The stopping of the train itself is also referred to as a "water stop". The term originates from the times of steam engines when large amounts of water were essential. Also known as wood and water stops or coal and water stops, since it was reasonable to replenish engines with fuel as well when adding water to the tender.

United States During the very early days of steam locomotives, water stops were necessary every 7–10 miles (11–16 km) and consumed much travel time. With the introduction of tenders (a special car containing water and fuel), trains could run 100–150 miles (160–240 km) without a refill. To accumulate the water, water stops employed water tanks, water towers and tank ponds. The water was initially pumped by windmills, watermills, or by hand pumps often by the train crew themselves. Later, small steam and gasoline engines were used. As the U.S. railroad system expanded, large numbers of tank ponds were built by damming various small creeks that intersected the tracks in order to provide water for water stops. Largemouth bass were often stocked in tank ponds. Many water stops along new railways evolved into new settlements. When a train stopped for water and was positioned by a water tower, a member of the engine crew, usually the fireman, swung out the spigot arm over the water tender and "jerked" the chain to begin watering. This gave rise to a 19th-century slang term "Jerkwater town" for towns too insignificant to have a regular train station. Some water stops grew into established settlements: for example, the town of Coalinga, California, formerly, Coaling Station A, gets its name from the original coal stop at this location. On the other hand, with the replacement of steam engines by diesel locomotives many of the then obsolete water stops, especially in deserted areas, became ghost towns. During the days of the Wild West, isolated water stops were among the favorite ambush places for train robbers.

See also Track pan - a water trough Water crane

Notes

References

Illustrations

Worked examples

Example 1 — a first encounter with Water stop

Start with the simplest possible case. Write down what Water stop 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 Water stop 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 Water stop 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 Water stop

In research: Water stop 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 Water stop 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: Water stop is common in secondary-school and first-year university syllabi. It links to neighbouring topics Rail infrastructure, Steam locomotive technologies, Water supply, so understanding it makes those chapters shorter.
In everyday life: Look for Water stop 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 Water stop in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Water stop 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 Water stop out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Water stop in simple terms?

A water stop or water station on a railroad is a place where steam trains stop to replenish water. The stopping of the train itself is also referred to as a "water stop".

Why does Water stop 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 Water stop?

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 Water stop.