VISUAL DICTTIONARY (Beam)

A rigid structural member designed to carry and transfer transverse loads across space to supporting elements

• Footing

• Beam

• Truss

• Column

The extent of space between two supports of a structure.

• Gap

• Space

• Span

• Clear Span

The distance between the inner faces of the supports of a span.

• Beam

• Span

• Clear Span

• Effective Span

The center to center distance between the supports if a span.

• Beam

• Span

• Clear Span

• Effective Span

An external moment tending to cause part of a structure to rotate or bend, equal to the algebraic sum of the moments about the neutral axis of the section under consideration

• Resisting Moment

• Bending Moment

• Bending Stress

• Moment

An internal moment equal and opposite to a bending moment, generated by a force couple to maintain equilibrium of the section being considered.

• Resisting Moment

• Bending Moment

• Moment

• Internal Equilibrium

The perpendicular distance a spanning member deviates from a true course under transverse loading, increasing with load and span, and decreasing with an increase in the moment of inertia of the section or the modulus of elasticity of the material.

• Torsion

• Camber

• Deflation

• Deflection

A slight convex curvature Intentionally built into a beam, girder, or truss to compensate for an anticipated deflection.

• Deflection

• Resisting Moment

• Camber

• Shear

An Imaginary Line passing through the centroid of the cross section of a beam or other member subject to bending, along which no bending stresses occur.

• Neutral Axis

• Bending Stress

• Central Axis

• Shearing Stress

A combination of compressive and tension stresses developed at a cross section of a structural member to resist a transverse force, having a maximum value at the surface furthest from the neutral axis.

• Neutral Axis

• Bending Stress

• Central Axis

• Shearing Stress