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In snow avalanches, when friction or other mechanical stops are not enough to hold it in place, and the angle is prime, it is held in place by tension and compression. The tension zones, are convex parts near the top and sides of the slide path; and compression zones, are the concave parts near the bottom and sides of the path. Snow is weak in tension and stronger in compression. If the load of snow on the slope has a lubricating layer, underneath it, and a good running surface, at sliding angle (38 degrees is prime), then the only thing hold the snow from sliding is the tension at the top, and the compression at the bottom. Upset this balance by either skiing through (cutting) one zone or the other, or use explosive in one of the zones, and you will have created a slab avalanche. In avalanche control they are often referred to as the "sweet spot"
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What is tension zone?
A2. In a beam supported at both its ends the lower half of the beam will be under tension, and the upper half of the beam will be under compression.
TENSION?
The pull or compression of a string or spring at both of its ends
Do compression and tension affect the thickness of earth's crust?
Compression and tension can indeed affect the thickness of the Earth's crust. Compression can thicken the crust by folding and faulting, while tension can cause stretching and thinning of the crust through processes like rifting and faulting. These tectonic forces play a significant role in shaping the Earth's crust over geological time scales.
Is wood stronger under tension?
Wood is stronger under compression than tension due to its cellular structure. When wood is subjected to tension, it is prone to splitting along the grain. This makes wood more vulnerable to failure under tension compared to compression.
What type of stress has vertical movement?
The type of stress that involves vertical movement is known as "compression" or "tension" stress. Compression occurs when materials are pushed together, leading to a decrease in volume, while tension occurs when materials are pulled apart, resulting in elongation. These types of stress are commonly associated with tectonic plate movements, where compression can lead to the formation of mountains, and tension can cause rift valleys.
What is the difference between tension and compression structures?
compression zone is an positive zone,tension zone is an negative zone..
What is tension zone?
A2. In a beam supported at both its ends the lower half of the beam will be under tension, and the upper half of the beam will be under compression.
How do compression and tension create motion?
tension streches it compression squeezes it
Why was the crack an effect of tension and not compression stress?
A crack is caused by tension not compression because tension pulls matter apart while compression pushes matter together
What is the difference of singly reinforced beam from doubly reinforced beam?
Singly reinforced beams have reinforcing only on the tension face. Doubly reinforced beams have reinforcing on the tension and compression face. Doubly reinforced beams can increase section capacity, but are primarily used to increase the ductility of the concrete beam. In certain codes, if the concrete section is controlled by the concrete failing in compression before the tension steel rebar yields (called a compression-controlled or brittle section), the calculated section capacity must be reduced to account for the brittle and sudden/unpredictable nature of a compression controlled (also called a brittle) failure. In order to make the section controlled by the yielding of the tension reinforcement (called a tension-controlled or ductile section), the ductility must be increased. This can be accomplished by adding steel in the compression zone, which gives strength to the compression area, thereby delaying the failure of the concrete. Enough compression steel can cause the section to switch from a brittle mode-of-failure to a ductile mode-of-failure, thereby permitting the designer to not decrease the section capacity from its calculated value. When identifying a doubly- reinforced beam, be sure that the steel in the compression area is meant to be for strength. Oftentimes, all faces of a beam will have some reinforcing for temperature/shrinkage protection and to tie the stirrups to. Steel that is only there for temp/shrinkage or to facilitate tying the rebar will usually be small and not much of it. In buildings, they will be often #3 bars @ 12" centers. In bridges, they may be #4 bars. These small bars should not be counted as compression-zone reinforcing. Look for bars in the compression zone that are of similar size to the main tension reinforcing.
What are the five forces that act upon bridges?
1.compression 2.tension 3.torsion 4.shear 5.gravity
Where do tension and compression occur on each type of bridge?
In bridges, tension and compression forces occur at different locations depending on the type. In beam bridges, tension is found in the lower section of the beam, while compression occurs in the upper section. Arch bridges primarily experience compression along the arch, with tension at the supports. Suspension bridges have tension in the cables and compression in the towers, with the deck experiencing bending forces that result in both tension and compression.
What is the neeed of extensometer?
it is used to measure the extension or compression in the object after it is subjected to tension or compression test it is used to measure the extension or compression in the object after it is subjected to tension or compression test
Is tension and compression a force?
Tension and compression are not forces themselves, but rather types of forces that act on objects. Tension is a force that pulls or stretches an object, while compression is a force that pushes or squeezes an object. Both tension and compression are common forces in structural mechanics.
What is the relationship between compression and tension?
Compression and tension are two types of stress that can act on a material. Compression occurs when forces push inward on the material, while tension occurs when forces pull outward on the material. In the context of structures, compression and tension often work together to maintain stability and strength.
What is tension and compression?
Tension and compression takes place when an object has a force on another object. The tension is when the force is causing a pulling effect on part of the object. The compression is when the force is causing a contracting effect on part of the object.
What is the roadbed?
it protects from tension and compression
