engineering

Transcontinental Railroad Grade

Transcontinental Railroad Grade 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 Transcontinental Railroad Grade rather than just read about it. In short: The Transcontinental Railroad Grade is a section of railway in northwest Utah, United States, near Corinne, which was listed on the National Register of Historic Places in 1994. It is an abandoned 13.5 miles (21.7 km) section of the original 1869 grade of the first transcontinental railroad.

Key takeaways

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

Reference excerpt

The Transcontinental Railroad Grade is a section of railway in northwest Utah, United States, near Corinne, which was listed on the National Register of Historic Places in 1994. It is an abandoned 13.5 miles (21.7 km) section of the original 1869 grade of the first transcontinental railroad. Its raised grade (trackway), 11 trestles, and 21 culverts were built in 1869 or in years soon after. This section was built poorly by the Union Pacific, consistent with financial incentives, and was acquired by the Central Pacific in 1869, which found it necessary to replace trestles and otherwise rebuild the route here. The trestles were built largely with redwood, and have vertical round beams supporting stringers supporting railway ties. Just three of them were in good condition in 1992. The section runs roughly from 6 miles (9.7 km) miles west of Corinne for about 13 miles (21 km) further west along what is now Utah State Route 83. It is near Promontory Summit where the ceremonial golden spike was hammered in to complete the six-year project by three companies to build the transcontinental railway.

See also List of bridges documented by the Historic American Engineering Record in Utah National Register of Historic Places listings in Box Elder County, Utah

References

External links Historic American Engineering Record (HAER) documentation, filed under Corinne, Box Elder County, UT: HAER No. UT-64, "Promontory Route Railroad Trestles", 3 photos, 1 measured drawing, 28 data pages, 1 photo caption page HAER No. UT-64-A, "Trestle 788B", 6 photos, 1 data page, 1 photo caption page HAER No. UT-64-B, "Trestle 789B", 5 photos, 3 data pages, 1 photo caption page HAER No. UT-64-C, "Trestle 789C", 6 photos, 3 data pages, 1 photo caption page HAER No. UT-64-D, "Trestle 790A", 8 photos, 3 data pages, 1 photo caption page HAER No. UT-64-E, "Trestle 790B", 5 photos, 1 data page, 1 photo caption page HAER No. UT-64-F, "Trestle 790C", 6 photos, 3 data pages, 1 photo caption page HAER No. UT-64-G, "Trestle 791B", 5 photos, 3 data pages, 1 photo caption page Note: HAER No. UT-64-H is within the boundaries of Golden Spike National Historical Park

Illustrations

Worked examples

Example 1 — a first encounter with Transcontinental Railroad Grade

Start with the simplest possible case. Write down what Transcontinental Railroad Grade 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 Transcontinental Railroad Grade 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 Transcontinental Railroad Grade 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 Transcontinental Railroad Grade

In research: Transcontinental Railroad Grade 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 Transcontinental Railroad Grade 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: Transcontinental Railroad Grade is common in secondary-school and first-year university syllabi. It links to neighbouring topics Bridges in Utah, Buildings and structures completed in 1869, Historic American Engineering Record in Utah, so understanding it makes those chapters shorter.
In everyday life: Look for Transcontinental Railroad Grade 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 Transcontinental Railroad Grade in 20 minutes

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

Frequently asked questions

What is Transcontinental Railroad Grade in simple terms?

Why does Transcontinental Railroad Grade 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 Transcontinental Railroad Grade?

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 Transcontinental Railroad Grade.