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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.
Do compression and tension affect the thickness of earth's crust?
Yes, Compression can thicken the earths crust and tension can cause thinning in the earths crust.
TENSION?
The pull or compression of a string or spring at both of its ends
Are both normal and reverse faults caused by tension?
No, Because Reverse fault is caused by compression and a normal fault is caused by tension.
What are the three types of stresses found at plate boundaries?
Compression, tension and shear.
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
Compare the way that compression affects the crust to the way that tension affects the crust?
compression and tension are opposite. compression pushes the crust together but tension pulls it apart
List the three types of stress that occur in earth's crust?
the 3 kinds of stress are compression,tension, and shearing
What are two types of elastic forces?
compression and tension Compression is a squeezing force, while tension is a pulling force.
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
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 bone weaker under compression or tension forces?
Tension
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.
