ETC ETC Structural Analysis & Load Calculations

Question 1

In structural engineering, what is dead load?

Accepted Answer

The permanent, static weight of the structure and fixed components

Answer

The weight of occupants, furniture, and movable equipment

Answer

Wind-induced forces on the structure

Answer

Seismic inertia forces during an earthquake

Question 2

What does live load represent in structural design?

Accepted Answer

Variable loads from occupancy, furniture, and equipment that can change over time

Answer

The weight of structural framing and decking

Answer

Forces applied during construction

Answer

Long-term settlement loads

Question 3

What is the standard unit of stress in US customary structural engineering calculations?

Accepted Answer

Pounds per square inch (psi) or kips per square inch (ksi)

Answer

Pounds per linear foot (plf)

Answer

Kilonewtons per meter (kN/m)

Answer

Pounds-force (lbf)

Question 4

What is the purpose of a factor of safety in structural design?

Accepted Answer

To account for uncertainties in loads, material properties, and workmanship

Answer

To increase the design load to the maximum possible value

Answer

To define the exact failure load of a member

Answer

To eliminate the need for quality control inspection

Question 5

In beam design, what is bending moment?

Accepted Answer

The internal force that causes a beam to bend, equal to the sum of moments about a cross section

Answer

The horizontal shear force at a support reaction

Answer

The deflection of the beam under load

Answer

The torsional force twisting a member about its long axis

Question 6

Which ASCE standard provides minimum design loads for buildings and other structures in the US?

Accepted Answer

ASCE 7

Answer

ASCE 37

Answer

AISC 360

Answer

ACI 318