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NCEES PE Civil: Structural Actual Questions

NCEES PE Civil: Structural

NCEES - PE Civil Engineering - Structural

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500 kips and a live load of 100 kips. If the building's importance factor is 1.5, what is the minimum seismic load that should be considered using the equivalent lateral force procedure per ASCE 7?

Answer: C

Explanation: The minimum seismic load is calculated using the formula V = I ⋅ S ⋅ W , where W is the total seismic weight (dead load + live load), I is the importance factor, and S is the

A structural engineer is designing a multi-story building in a high seismic zone. The building will have a total dead load of

seismic response coefficient. For this scenario, the total weight W = 500 + 100 = 600 kips. Assuming a typical seismic response coefficient S = 0.25, the seismic load V = 1.5 ⋅

0.25 ⋅ 600 = 225 kips. The correct answer is within the range of typically considered loads, hence 150 kips is the correct

minimum to account for variations.

point load. If the lane load is 0.64 kips/ft for 10 ft and the point load is 32 kips, what is the total design load for a 10-ft lane length?

A. 64 kips

B. 32 kips

C. 96 kips

D. 38 kips plus dynamic load

Answer: D

Explanation: The lane load for 10 ft is calculated as

0.64 kips/ft × 10 ft = 6.4 kips. The total design load considering the point load is 6.4 + 32 = 38.4 kips. However, for bridge design, dynamic load factors are applied to account

In the analysis of a bridge subjected to vehicular live loads, the design load is specified as a combination of a lane load and a

for moving loads, thus increasing the effective design load.

Question 3:

A construction site for a high-rise building is preparing to pour

A. 200 kips

B. 260 kips

C. 300 kips

D. 340 kips

Answer: B

Explanation: The construction loads exceeding the dead load by 30% means that the additional load is 200 × 0.30 = 60 kips. Therefore, the total design load during construction is 200 + 60 = 260 kips, ensuring the structural members can safely support the temporary conditions.

Question 4:

concrete for the upper floors. The contractor indicates that the construction loads from formwork and equipment will exceed the applied dead load by 30%. If the dead load is estimated at 200 kips, what should be the total design load for the structural members during construction?

A building is designed to withstand wind loads based on its exposure category and height. If the building has a height of 100 ft and is located in an area with a basic wind speed of 90 mph, what is the primary factor that influences the design wind pressure on the building's facade?

The height-to-width ratio of the building.
The building's structural system.
The effective wind area determined by the building's shape.

Answer: D

Explanation: The geographic location and terrain characteristics are critical in determining the design wind pressure as they influence the basic wind speed and exposure category. These factors directly affect how wind loads are calculated and applied to the building's design.

Question 5:

During the design of a crane-supporting structure, the engineer must account for the maximum lifting capacity of the crane, which is rated at 15 tons. If the crane is expected to operate with a radius of 30 ft, which of the following scenarios
The geographic location and terrain characteristics.

would most critically impact the design of the supporting structure?

The maximum lifting capacity is reduced due to the radius increase.
The crane will be parked at the end of its maximum radius.
The crane will be used to lift materials intermittently during peak hours.
The crane's operational speed is increased to improve

efficiency.

Explanation: The maximum lifting capacity is typically reduced as the radius increases due to the moment generated. This scenario critically impacts the design of the supporting structure, necessitating a reevaluation of load distribution and stability under maximum reach conditions.

Question 6:

In seismic load design, a structure has a fundamental period of

1.2 seconds. If the design response spectrum indicates a design acceleration of 0.5g, what is the base shear for the structure with a weight of 800 kips?

Answer: A

200 kips
400 kips
600 kips
800 kips

Answer: A

damping, leading to a typical base shear of 200 kips for safety.

Question 7:

A structure is designed to resist wind loads with a gust factor applied to account for dynamic effects. If the basic wind speed is 85 mph and the gust factor is determined to be 1.5, what is the effective wind speed used in the calculations?

A. 85 mph

B. 127.5 mph

C. 140 mph

D. 150 mph

Explanation: The base shear V is calculated using the formula V = Cs ⋅ W , where Cs is the seismic response coefficient. For a fundamental period of 1.2 seconds and a design acceleration of 0.5g, assuming Cs = 0.5, we find V = 0.5 ⋅ 800 = 400 kips. However, adjustments are made for factors such as

Answer: B

Explanation: The effective wind speed is calculated as

Effective Wind Speed = Basic Wind Speed ×

Gust Factor = 85 mph × 1.5 = 127.5 mph. This effective speed is used to determine the wind loads acting on the

structure, accounting for potential dynamic effects.

Question 8:

engineer considers the occupancy type, which classifies it as a "Business" occupancy. If the code specifies a live load of 100 psf for this occupancy, how should the engineer account for areas with heavy equipment, such as conference rooms?

A. The live load should remain at 100 psf for all areas.

B. The live load for conference rooms should be increased to 150 psf.

C. The live load should be reduced to account for infrequent

use.

D. The live load for conference rooms should be ignored entirely.