SOLUTIONS MANUAL FOR
STEEL DESIGN 6TH
EDITION BY SEGUI |
ANSWERS TO PROBLEMS |
ALL 10 CHAPTERS
COVERED
SOLUTIONS MANUAL FOR
STEEL DESIGN 6TH
EDITION BY SEGUI |
ANSWERS TO PROBLEMS |
ALL 10 CHAPTERS
COVERED
,Chapter 1: Introduction
Question 1: What is the primary function of a design specification?
A. Replace the need for building codes
B. Provide detailed procedures for designing steel structures
C. Only apply to bridge design
D. Are optional guidelines with no legal standing
Correct Answer: B
Rationale: Design specifications, such as the AISC Specification for Structural Steel
Buildings, provide detailed requirements for the design, fabrication, and erection of steel
structures. They are typically adopted by reference in building codes .
Question 2: Which of the following is a dead load?
A. Wind pressure
B. Snow accumulation
C. Self-weight of a concrete slab
D. Occupant weight
Correct Answer: C
Rationale: Dead loads are permanent loads that include the weight of the structure
itself, fixed partitions, and permanently attached equipment. The self-weight of a
concrete slab is a permanent load that remains constant over time .
Question 3: The AISC Specification permits design using either LRFD or ASD.
Which statement is TRUE?
A. LRFD always results in more conservative designs
B. ASD always results in more conservative designs
C. Both methods are calibrated to provide comparable levels of safety
D. LRFD cannot be used for building design
Correct Answer: C
Rationale: Both LRFD and ASD are calibrated to provide comparable levels of reliability,
though they approach design differently. Engineers may use either method as permitted
by building codes .
,Question 4: In a typical stress-strain curve for structural steel, the yield point is
defined as:
A. The point where the material fractures
B. The maximum stress the material can sustain
C. The stress at which significant plastic deformation begins without an increase in load
D. The stress at the end of the elastic range
Correct Answer: C
Rationale: Structural steel exhibits a distinct yield point where strain increases while
stress remains constant. This behavior is characteristic of mild steel and is essential for
plastic design .
Question 5: The modulus of elasticity (E) for structural steel is approximately:
A. 10,000 ksi
B. 29,000 ksi
C. 50,000 ksi
D. 100,000 ksi
Correct Answer: B
Rationale: The modulus of elasticity (E) for structural steel is approximately 29,000 ksi
(200 GPa), which is a fundamental material constant used in steel design calculations .
Question 6: The primary function of a design specification is to:
A. Provide a step-by-step guide for construction
B. Ensure safety and serviceability of structures
C. Maximize the cost of construction
D. Eliminate the need for engineering judgment
Correct Answer: B
Rationale: Design specifications establish minimum requirements for the design of
structures, focusing on safety (strength) and serviceability (deflection, vibration, etc.)
while allowing engineers to use their professional judgment .
Question 7: A "live load reduction factor" may be applied in design when:
A. The structure is located in a low-wind region
B. The tributary area for a member is large
, C. Only dead loads are present
D. The structure is made of lightweight steel
Correct Answer: B
Rationale: Live load reduction factors recognize that the probability of full live load
being applied simultaneously over a large area is low. As tributary area increases, the
required live load may be reduced .
Question 8: The AISC Steel Construction Manual includes:
A. Dimensions and properties of standard structural shapes
B. Design tables for beams, columns, and connections
C. Design specifications and commentary
D. All of the above
Correct Answer: D
Rationale: The AISC Manual is a comprehensive resource that includes shape
dimensions, design tables, the AISC Specification with commentary, and many other
design aids .
Question 9: Which load combination is typically used for LRFD strength design?
A. 1.0D + 1.0L
B. 1.2D + 1.6L
C. 1.4D
D. 0.9D + 1.0W
Correct Answer: B
Rationale: The basic LRFD load combination for dead and live loads is 1.2D + 1.6L.
Other combinations include wind, snow, and earthquake loads with different load
factors .
Question 10: The primary advantage of steel as a structural material is its:
A. Low cost per pound
B. High strength-to-weight ratio
C. Fire resistance
D. Corrosion resistance
Correct Answer: B
STEEL DESIGN 6TH
EDITION BY SEGUI |
ANSWERS TO PROBLEMS |
ALL 10 CHAPTERS
COVERED
SOLUTIONS MANUAL FOR
STEEL DESIGN 6TH
EDITION BY SEGUI |
ANSWERS TO PROBLEMS |
ALL 10 CHAPTERS
COVERED
,Chapter 1: Introduction
Question 1: What is the primary function of a design specification?
A. Replace the need for building codes
B. Provide detailed procedures for designing steel structures
C. Only apply to bridge design
D. Are optional guidelines with no legal standing
Correct Answer: B
Rationale: Design specifications, such as the AISC Specification for Structural Steel
Buildings, provide detailed requirements for the design, fabrication, and erection of steel
structures. They are typically adopted by reference in building codes .
Question 2: Which of the following is a dead load?
A. Wind pressure
B. Snow accumulation
C. Self-weight of a concrete slab
D. Occupant weight
Correct Answer: C
Rationale: Dead loads are permanent loads that include the weight of the structure
itself, fixed partitions, and permanently attached equipment. The self-weight of a
concrete slab is a permanent load that remains constant over time .
Question 3: The AISC Specification permits design using either LRFD or ASD.
Which statement is TRUE?
A. LRFD always results in more conservative designs
B. ASD always results in more conservative designs
C. Both methods are calibrated to provide comparable levels of safety
D. LRFD cannot be used for building design
Correct Answer: C
Rationale: Both LRFD and ASD are calibrated to provide comparable levels of reliability,
though they approach design differently. Engineers may use either method as permitted
by building codes .
,Question 4: In a typical stress-strain curve for structural steel, the yield point is
defined as:
A. The point where the material fractures
B. The maximum stress the material can sustain
C. The stress at which significant plastic deformation begins without an increase in load
D. The stress at the end of the elastic range
Correct Answer: C
Rationale: Structural steel exhibits a distinct yield point where strain increases while
stress remains constant. This behavior is characteristic of mild steel and is essential for
plastic design .
Question 5: The modulus of elasticity (E) for structural steel is approximately:
A. 10,000 ksi
B. 29,000 ksi
C. 50,000 ksi
D. 100,000 ksi
Correct Answer: B
Rationale: The modulus of elasticity (E) for structural steel is approximately 29,000 ksi
(200 GPa), which is a fundamental material constant used in steel design calculations .
Question 6: The primary function of a design specification is to:
A. Provide a step-by-step guide for construction
B. Ensure safety and serviceability of structures
C. Maximize the cost of construction
D. Eliminate the need for engineering judgment
Correct Answer: B
Rationale: Design specifications establish minimum requirements for the design of
structures, focusing on safety (strength) and serviceability (deflection, vibration, etc.)
while allowing engineers to use their professional judgment .
Question 7: A "live load reduction factor" may be applied in design when:
A. The structure is located in a low-wind region
B. The tributary area for a member is large
, C. Only dead loads are present
D. The structure is made of lightweight steel
Correct Answer: B
Rationale: Live load reduction factors recognize that the probability of full live load
being applied simultaneously over a large area is low. As tributary area increases, the
required live load may be reduced .
Question 8: The AISC Steel Construction Manual includes:
A. Dimensions and properties of standard structural shapes
B. Design tables for beams, columns, and connections
C. Design specifications and commentary
D. All of the above
Correct Answer: D
Rationale: The AISC Manual is a comprehensive resource that includes shape
dimensions, design tables, the AISC Specification with commentary, and many other
design aids .
Question 9: Which load combination is typically used for LRFD strength design?
A. 1.0D + 1.0L
B. 1.2D + 1.6L
C. 1.4D
D. 0.9D + 1.0W
Correct Answer: B
Rationale: The basic LRFD load combination for dead and live loads is 1.2D + 1.6L.
Other combinations include wind, snow, and earthquake loads with different load
factors .
Question 10: The primary advantage of steel as a structural material is its:
A. Low cost per pound
B. High strength-to-weight ratio
C. Fire resistance
D. Corrosion resistance
Correct Answer: B
