engineering

Nippon Screw Weight System

Nippon Screw Weight System 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 Nippon Screw Weight System rather than just read about it. In short: The Nippon Screw Weight System (NSWS) is an on-site ground survey machine that examines the geotechnical engineering properties of soil. The NSWS was developed to encounter weather abnormalities and natural hazards, saving human lives.

Key takeaways

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

Reference excerpt

The Nippon Screw Weight System (NSWS) is an on-site ground survey machine that examines the geotechnical engineering properties of soil. The NSWS was developed to encounter weather abnormalities and natural hazards, saving human lives. Introduced in 2012 by the National Agriculture and Food Research Organization (NARO), the NSWS was designed to overcome problems with the Method for standard penetration test (SPT). NSWS was created by 耕三大北, was the member of 311 earthquake disaster committee of the Japanese Geotechnical Society. The society released a report in June, 2012 proposing to the Japanese government a use of NSWS to investigate the aftermath of the 2011 Tōhoku earthquake and tsunami.

Features The NSWS is compact, weighs 120 kg, and has wheels, making it suitable for ground measurement in crowded residential areas. It costs much less than the conventional SPT test and triaxial compression test. NSWS can measure very soft zones, converted N-value of zero in the ground that had been considered difficult. It has 1.08 cm interval.SPT conducts the test every 50 cm, and 30 cm interval out of 50 cm is tested so the rest, 20 cm, is not measured; that means 40% of an entire hole is unknown. NSWS does not suffer from such a limitation. NSWS can penetrate the ground diagonally and can cut through soft gravels. NSWS has in-situ shear test capability, the result of the joint research with NARO and Okita-Ko Co., Ltd NSWS can prepare converted N-value, density, in-situ shear data for Stability Analysis. NSWS enables multi-point surveying due to its diagonal penetration capability and high-mobility. The multiple spots on the weak layers can be analyzed.

See also Boring (earth) Cone penetration test Geotechnical investigation Soil mechanics

References

External links National Agriculture and Food Research Organization of Japan Independent Administrative Agency of Japan specialized in research and development of agriculture and food. Japanese Geotechnical Society

Illustrations

Worked examples

Example 1 — a first encounter with Nippon Screw Weight System

Start with the simplest possible case. Write down what Nippon Screw Weight System 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 Nippon Screw Weight System 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 Nippon Screw Weight System 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 Nippon Screw Weight System

In research: Nippon Screw Weight System 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 Nippon Screw Weight System 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: Nippon Screw Weight System is common in secondary-school and first-year university syllabi. It links to neighbouring topics Geotechnical engineering, In situ geotechnical investigations, Land surveying systems, so understanding it makes those chapters shorter.
In everyday life: Look for Nippon Screw Weight System 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 Nippon Screw Weight System in 20 minutes

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

Frequently asked questions

What is Nippon Screw Weight System in simple terms?

Why does Nippon Screw Weight System 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 Nippon Screw Weight System?

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 Nippon Screw Weight System.