engineering

Southwestern Bell Main Dial Building

Southwestern Bell Main Dial Building 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 Southwestern Bell Main Dial Building rather than just read about it. In short: The Southwestern Bell Main Dial Building is a historic telephone exchange building in Tulsa, Oklahoma, United States, built for the Southwestern Bell Telephone Company in 1924. The original two-story Gothic Revival structure, which encompassed 18,726 square feet (1,739.7 m2), was to house the main dial equipment for the new automatic dial equipment that the company had introduced to Tulsa in November 1924.

Key takeaways

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

Reference excerpt

The Southwestern Bell Main Dial Building is a historic telephone exchange building in Tulsa, Oklahoma, United States, built for the Southwestern Bell Telephone Company in 1924. The original two-story Gothic Revival structure, which encompassed 18,726 square feet (1,739.7 m2), was to house the main dial equipment for the new automatic dial equipment that the company had introduced to Tulsa in November 1924. In 1930, the company added four floors to the top of the 1924 structure to house its divisional offices and toll terminal equipment needed for the underground cable that connected Tulsa with Oklahoma City. The 1930 addition was constructed in Zig Zag Art Deco Style.

Building description Southwestern Bell intended to build a two-story building to house its new automatic dial equipment in 1924. However, company engineers expected to add more stories in the future as the Tulsa telephone system expanded. They specified that the initial support structure be capable of carrying at least seven more stories. The original two-story building was designed using Gothic Style architecture, which was then in vogue in the United States. The exterior was covered in light brown brick. The first floor has large arched windows framed with terra cotta. The color of the frames matches that of the quoins that reach to the top of the second floor. The second-floor windows are rectangular and separated by brick panels decorated with terra cotta torches. The second floor spandrels are made of buff-colored terra cotta tile.

Addition to NRHP Southwestern Bell Dial Telephone building was added to the National Register of Historic Places under criteria A and C on June 22, 1984. Its reference number is 84003445.

Early history of telephone service in Tulsa The U. S. Army installed the first telephone system in Indian Territory in 1879, between Fort Sill and Fort Reno, to support its operations to control the native tribes. By 1879, the Cherokee Nation installed the first commercial system in Indian Territory to connect the tribal offices in Talequah and Muskogee to the Five Civilized Tribes agency at Muskogee. This system also connected to Fort Gibson. Robert H. Hall built a system in Tulsa that connected 80 subscribers in 1899. Hall sold his system in 1903 to the Vinita-based Indian Territory Telephone Company, which was bought by Pioneer Company on July 8, 1904. Pioneer is considered the forerunner of Southwestern Bell Telephone Company. Hall's business was a manually operated switchboard in an office on the second floor of a building at the northwest corner of First Street and Main. Lines to and from the switch board ran from the board through a window to a telephone pole outside the building. After Pioneer bought the system, the main office and switchboard moved to the second floor of the Bynum Building at the northwest corner of Second Street and Main. By 1906, the Pioneer system served 280 telephones. In 1924, Tulsans had 18,726 telephones, increasing to 41,471 by 1930.

Notes

References

Illustrations

Worked examples

Example 1 — a first encounter with Southwestern Bell Main Dial Building

Start with the simplest possible case. Write down what Southwestern Bell Main Dial Building 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 Southwestern Bell Main Dial Building 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 Southwestern Bell Main Dial Building 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 Southwestern Bell Main Dial Building

In research: Southwestern Bell Main Dial Building 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 Southwestern Bell Main Dial Building 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: Southwestern Bell Main Dial Building is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1924 establishments in Oklahoma, Art Deco architecture in Oklahoma, Buildings and structures completed in 1924, so understanding it makes those chapters shorter.
In everyday life: Look for Southwestern Bell Main Dial Building 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 Southwestern Bell Main Dial Building in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Southwestern Bell Main Dial Building 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.
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Frequently asked questions

What is Southwestern Bell Main Dial Building in simple terms?

Why does Southwestern Bell Main Dial Building 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 Southwestern Bell Main Dial Building?

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 Southwestern Bell Main Dial Building.