STRUCTURAL practice Questionnaires

What is the Modulus of Elasticity

(F/A) (dL/L)

What usually happens to steel when stress

Bend

It is the stress caused by an applied load that acts to reduce the length of a material along the axis of the applied load

Compressive Stress

A term to describe the magnitude to which a structural element is displaced when subjected to an applied load

Deflection

What deformation does a beam contain

Deflection

It is the change in shape of a material created when stress is applied

Deformation

It is the amount of stress that a material can undergo before moving from elastic deformation into plastic deformation

Elastic Limit

The point in stress-strain curve beyond which the materila permanently deforms after removing the load

Elastic Limit

It is the ability of the material to return to its previous shape after stress is released

Elasticity

What do you call ratio stress/ strain

Modulus of Elasticity

Young's Modulus is the ratio of stress along an axis to the strain along the axis in the range of stress in which Hooke's Law holds. It is also known as

Modulus of Elasticity

Also called the Shear Modulus, it is the ratio of shear stress to the shear strain and is denoted by G.

Modulus of Rigidity

Psacal (Pa), the SI unit of stress. is expressed in

N/m^2

What do you call the point wherein a material is about to rupture

Point of Breaking

The ratio of Lateral Strain / Longitudinal Strain

Poisson's Ratio?

The greatest stress at which a material is capable of sustaining the applied load without deviating from the proportionality of stress to strain. it is expressed in psi or kg/mm^2

Proportional Limit

A material that possesses a very high Young's Modulus is

Rigid

It is the stress caused by a pair of opposing forces that acts along parallel lines through the material

Shear Stress

The deformation of a body under the action of an applied force. It is the ratio of the change in size and shape to the original size and shape of the body

Strain

An instrument used to measure deformation

Strain Gauge

It is the force per unit area (F/A) on a body that tends to cause it to change shape

Stress

It is the Stress caused by an applied load that tends to elongate the material along the axial of the applied load

Tensile Stress

What is the most important determinant of concrete strength

Water

It is the first stress in a material at which an increase in strain occurs without an increase in stress

Yield Point

Newton (N) is the SI Unit of Force and was named after Isaac Newton in recognition of his contributions ro the field of Mechanics. It is denited by N and is expressed in

kg m/s^2

The unit stress in the Imperial system

psi