Exam 24: Sizing Joists, Rafters, and Beams

With a cantilevered beam with a uniform load, the live loads of exterior balconies are approximately half the normal floor live load.

Deflection deals with the _____ of a beam.

A ____ is the tendency of a force to cause rotation about a certain point.

When determining the joist size of engineered lumber required to span 16'-0", what should you do next after identifying the loading condition?

When determining beams with complex loads, the _____ is the sum of the reactions from each end of the beam.

Wood grain is composed of fibers that can be visualized as grains of rice that are aligned in the same direction.

When sizing a wood beam, what should you do next after determining the reactions?

What causes a beam to break and fall between its supporting posts?

Douglas fir is used for structural members because it has a high strength to- weight ratio and excellent dimensional stability.

What does a symbol such as L/ D = 360 represent?

The ____ at any point of a beam is the measure of the tendency of the beam to bend due to the force acting on the beam.

Hem-fir lumber is kiln-dried to make it straight and dimensionally stable.

The sum of the tributary widths is equal to a quarter of the total distance between the bearing points on each side of the beam being determined.

What term refers to a ratio of the amount a member will deflect in proportion to the applied load?

Which of the following is described using a nominal size and a net size?