FORCES ACTING ON STRUCTURES and mechanism
SHEAR.A shear force is a force applied perpendicular to a surface,in opposition to an offset force acting in the opposite direction.This results in a shear strain.In simple terms,one part of the surface is pushed in one direction,While another part of the surface is pushed in the opposite direction.
WIND BLOWING. Wind blowing against a wall or a tree evidently exerts a force.How large a force?Can we calculated it?For v =80m/s.The mean destiny.
Tension
The tension force is the force that is transmitted through a string ,rope,cable or wire when it is pulled tight by forces acting from opposite from ends.The tension force is directed along the length of the wire and pulls equally on the objects on the opposite side of the wire.
A dead load is a force acting on a structure.
Here how?A dead load is when a structure is non moveable and those certain parts of the structure is columns,beams nuts and bolts.
A live load.A live load is a force acting on structures. A live load means like suppose there are people driving a cars on a bridge that's a live load.I can also give you another example suppose a person is sitting on a chair that's a live load. A characteristic on a structure is a live load.
COMPRESSION.Compression force(or compression force) occurs when a physical force presses inward on an object, causing it to become compacted.In the process,the relative positions of atoms and molecules of the object change.This change can be temporary or permanent depending on the type of material receiving the compressive force.There can also be different results depending on the direction or position on the object that the compressive force is applied.
SNOW LOAD.Snow Load is a force that downward force on buildings roof by the weight of accumulated snow and ice.The roof or the entire structure can fail if the snow load exceed the weight the buildings was designed to shoulder.
A torsion force is a load that is a applied to material through torque.The torque that is applied creates a shear stress.If a torsion is large enough,it can cause a material to undergo a twisting motion during elastic and plastic deformation.Torsion force is commonly measures in foot-pounds or newton-meters.Mechanical parts such as shafts are so often placed under forces of torsion that material selection is a key consideration to prevent failures from happening.
Did you know that a structures weight its self is a force.Here's why?The structures weight can make the structure fall down if our ground wasn't that strong because the structures weight is pretty heavy in general plus some humans can be in the structure as well.
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