engineering

Illinois–Indiana State Line Boundary Marker

Illinois–Indiana State Line Boundary Marker 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 Illinois–Indiana State Line Boundary Marker rather than just read about it. In short: The Illinois–Indiana State Line Boundary Marker is a limestone obelisk that commemorates the establishment of the border between Illinois and Indiana. Constructed by the Office of the United States Surveyor General in 1838, its current location near the northernmost point between the two states straddles the line between the cities of Hammond and Chicago, near the end of Avenue G on Chicago's East Side and just west…

Key takeaways

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

Reference excerpt

The Illinois–Indiana State Line Boundary Marker is a limestone obelisk that commemorates the establishment of the border between Illinois and Indiana. Constructed by the Office of the United States Surveyor General in 1838, its current location near the northernmost point between the two states straddles the line between the cities of Hammond and Chicago, near the end of Avenue G on Chicago's East Side and just west of the former location of the State Line Generating Plant in Hammond. The obelisk is composed of large limestone blocks, standing more than 15½ feet (4.7 meters) and weighing more than 38,000 pounds. It replaced a pine post that had been erected in 1821. The marker sits 159.359 miles (256.46 kilometers) due north of where the straight-line border meets the Wabash River, which serves as the remainder of the border between the two states. The obelisk's original location, 191.09 feet (58.24 m) south of its present location, was near the Lake Michigan shoreline at that time. By the 1980s, however, due to landfill related to the area's industrial development, the shoreline had shifted several hundred feet north, and the obelisk was hard to find and damaged by graffiti in a remote wooded location. In 1988, thanks to local conservation efforts, it was moved to a safer, more easily accessible location next to the guard house for the State Line Generating Plant. The coal-burning generating plant closed in 2012 and was torn down soon after, leaving the marker's future uncertain once again. Then in 2021, Hammond and Chicago collaborated to build a small park, called State Line Plaza. The boundary marker is considered the third oldest man-made structure inside Chicago's city limits, after only the Noble-Seymour-Crippen House (1833) and the Henry B. Clarke House (1836). The marker was awarded Chicago Landmark status on September 4, 2002.

References

Illustrations

Worked examples

Example 1 — a first encounter with Illinois–Indiana State Line Boundary Marker

Start with the simplest possible case. Write down what Illinois–Indiana State Line Boundary Marker 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 Illinois–Indiana State Line Boundary Marker 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 Illinois–Indiana State Line Boundary Marker 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 Illinois–Indiana State Line Boundary Marker

In research: Illinois–Indiana State Line Boundary Marker 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 Illinois–Indiana State Line Boundary Marker 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: Illinois–Indiana State Line Boundary Marker is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1838 in the United States, 1838 sculptures, Borders of Illinois, so understanding it makes those chapters shorter.
In everyday life: Look for Illinois–Indiana State Line Boundary Marker 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 Illinois–Indiana State Line Boundary Marker in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Illinois–Indiana State Line Boundary Marker 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 Illinois–Indiana State Line Boundary Marker out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Illinois–Indiana State Line Boundary Marker in simple terms?

Why does Illinois–Indiana State Line Boundary Marker 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 Illinois–Indiana State Line Boundary Marker?

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 Illinois–Indiana State Line Boundary Marker.