Calculated moments of inertia and resistance for geometric shapes of structures

GOST 8509-93

b - shelf width; t—thickness of the flange;

R—radius of internal curvature; r is the radius of curvature of the shelves;

F is the cross-sectional area; i—radius of gyration;

I—moment of inertia; Ixy is the centrifugal moment of inertia;

x0 is the distance from the center of gravity to the outer edge of the shelf.

SEE OTHER SIZES OF CORNERS HERE

L20 - L45, L50 - L75, L80 - L110, L125 - L180, L200 - L250

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Equal angles have a very wide range of applications. Of these, you can combine different sections (Tee, cross-section, channel, I-beam). Corners are used as racks, braces, and belts. Sometimes corners are used as stiffeners for various floorings. It is not recommended to use corners as the main load-bearing beams in metal frames, because excessive consumption of steel will be unjustified.

Corners are used for various auxiliary structures (Support tables on columns for installing beams, support tables on beams and trusses, for installing purlins. Corners are widely used for the manufacture of seasonal structures, such as canopies, tents, greenhouses, greenhouses and much more.

When using the assortment, it should be taken into account that some items are popular and can be purchased at almost any metal stock, while some items are rare and difficult to obtain, especially in the regions. You should also take into account the price range, because... sometimes it is more profitable to lay cheaper beams, which pays off even despite some overconsumption of metal.

The table shows prices at the beginning of 2022.

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The official website of the Institute of Human Self-Healing under the leadership of Mirzakarim Norbekov is
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(Attention:

There are debates about the scientific approaches to Norbekov’s treatment methods and his academic rank. In the scientific and medical community, classes according to the Norbekov system are considered pseudoscientific (official medicine for the most part does not recognize treatment methods without drugs and medicines). The point of view on this is presented in Wikipedia. At the same time, classes on the Norbekov system are popular among students (as described in various printed publications and groups are created on social networks (see below)), and representative offices of the Institute of Human Self-Healing are located not only in Russia, but also abroad (some website addresses ).

Sources and additional information:

• institut.norbekov.com – Institute of Human Self-Healing under the leadership of Norbekov;
• ru.wikipedia.org – article “Norbekov, Mirzakarim Sanakulovich” on Wikipedia.
• kp.ru – an article in Komsomolskaya Pravda about musician Viktor Zinchuk, where he says that he practices according to the Norbekov system.

Additional Information:

• Institute of Human Self-Healing: Norbekov System in Kazakhstan;
• The Norbekov Group is a website for graduates of the Norbekov Institute of Human Improvement courses;
• Representative office of the Institute of Human Self-Healing in Kyiv – article “The Giver”;
• “Dervish in a black tailcoat and white robe” - an article in the magazine “Expeditions into the Unknown. AUS (AustralAsia)", N 19, August-September, 2002.
• Group “In Contact” – Norbekov, Norbekov system (more than 2 thousand participants);
• Norbekov’s system in Novosibirsk – interview with Norbekov;
• Norbekov Club.

Additional from Guenon:

• What is the official website of the program “ Malakhov+ ” (Malakhov Plus)? Where can I find notes for episodes of the program “ Malakhov+ ” (Malakhov Plus)?
• What is the official website of the doctor and psychotherapist Anatoly Kashpirovsky?

Equal angle corner GOST 8509

For isosceles angles, it is necessary to calculate the centrifugal moment relative to the central axes У1Z1:

.

Angle b is measured from the U1 axis to the Z1 axis. In the case of clockwise movement, angle b is considered negative.

In our case b = – 45°.

For unequal angles, angle b is selected from the tables.

It is recommended to present all initial data in the form of a table, which will be convenient to work with on a computer.