Question 1

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

Accepted Answer

A) True 
 B)False  False

Question 2

Deflection deals with the _____ of a beam.

Accepted Answer

A)  weight 
B)  total area 
C)  stiffness 
D)  material composition C

Question 3

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

Accepted Answer

A)  shear 
B)  deflection 
C)  moment 
D)  reduction C

Question 4

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

Accepted Answer

A)  use the spacing column to locate a distance that exceeds the span 
B)  determine the deflection limit 
C)  select the spacing 
D)  determine the live and dead loads

Question 5

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

Accepted Answer

A)  maximum bending moment 
B)  point load 
C)  compression 
D)  reaction

Question 6

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

Accepted Answer

A) True 
 B)False

Question 7

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

Accepted Answer

A)  determine the bending moment 
B)  determine the weight supported by 1 linear foot of beam 
C)  determine the horizontal shear 
D)  determine the pier sizes

Question 8

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

Accepted Answer

A)  compression 
B)  vertical shear 
C)  deflection 
D)  horizontal shear

Question 9

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

Accepted Answer

A) True 
 B)False

Question 10

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

Accepted Answer

A)  code allowable deflection 
B)  live load value 
C)  size and spacing of lumber 
D)  title

Question 11

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.

Accepted Answer

A)  fiber bending stress 
B)  bending moment 
C)  bond 
D)  horizontal shear

Question 12

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

Accepted Answer

A) True 
 B)False

Question 13

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.

Accepted Answer

A) True 
 B)False

Question 14

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

Accepted Answer

A)  horizontal shear 
B)  vertical shear 
C)  compression 
D)  modulus of elasticity

Question 15

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

Accepted Answer

A)  drywall 
B)  strong back 
C)  sawn lumber 
D)  purlin

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?