NCARB Questions

Question 1

The most important factor affecting the strength of concrete is

Answer 1

water-to-cement ratio

Question 2

A drilled pier is belled in order to

Answer 2

increase bearing area

Question 3

A slump cone is used primarily to provide an indication of which of the following characteristics of concrete?

Answer 3

Strength and Workability

Question 4

Since the 1960’s, thin shell concrete roof structures have seldom been utilize in the US and Canada primarily because

Answer 4

Formwork is prohibitively expensive

Question 5

The most frequently used footing type at the exterior wall for load bearing wall support systems is

Answer 5

continuous wall footings

Question 6

Which of the following best defines the P-delta effect?

• Lateral forces on the foundations
• Bending Forces in the vertical members
• Horizontal forces in the roof sections
• Moment forces at the joint

Answer 6

Bending forces in the vertical members

Question 7

Concrete should reach its design compressive strength in how many days?

Answer 7

28

Question 8

When concrete is held under sustained stress, the strain will continue to increase with time. Which of the following defines this time-dependent phenomenon?

Answer 8

Creep

Question 9

Steel roof joists are manufactured with camber to

Answer 9

compensate for deflection

Question 10

In a renovation of an existing residential building, in which piping of conduit needs to be run through a 2x12 wood floor joist, what is the minimum dimension required by the IBC from the top or bottom of the joist to the bored hole?

Answer 10

2 inches

Question 11

Cast in place concrete beams and columns with No. 11 rebar or smaller reinforcing bars that are not exposed to weather or in contact with the ground should have a minimum coverage of concrete over the bars of

Answer 11

1 1/2 inches

Question 12

A balcony is hung from a steel roof framing over a hotel atrium. Which of the following is the minimum code required increase in live load due to impact?

Answer 12

33 %

Question 13

A one way slab is used typically in which of the following types of buildings?

Museum
Parking
Library
Warehouse

Answer 13

Parking

Question 14

A frame in which diagonal members are connected to a beam a short distance from the column joint and utilized to resist lateral seismic forces in a building is ______.

Answer 14

An eccentrically braced frame (EBF)