LSU CM 4223 - Module 4 Quiz (Chapters 5-6) | Fall 2026 | 100% Correct Solution Key Page 1
LSU - CM 4223 - MODULE 4 - CHAPTER 5-6
Fall Quiz | Questions and Answers | 2026 Update | 100% Correct
Course CM 4223 - Construction Project Planning & Scheduling
Institution Louisiana State University (LSU), Baton Rouge
Module / Chapters Module 4 - Chapters 5 & 6
Topic Coverage WBS, Bar Charts, CPM, PERT, Crashing, Resource Leveling, Schedule Control
Academic Year 2026 | 2027 (Fall Term)
Total Questions 40 multiple choice (4 sections x 10 questions)
Cognitive Mix 30% Recall | 50% Application | 20% Analysis
Question Style 75% scenario-based | 25% direct
Total Points 100 (2.5 points per question)
Standards Alignment PMI PMBOK 7th Ed., AGC of America, AACE International, LSU CM 4223 outcomes
Abstract
This Module 4 quiz assesses mastery of Chapters 5-6 of LSU CM 4223 - Construction Project Planning
and Scheduling. The 40-question instrument is partitioned across four thematic sections: (1) Work
Breakdown Structures and bar-chart fundamentals; (2) Critical Path Method (CPM) network logic with
forward/backward pass calculations and float analysis; (3) Program Evaluation and Review Technique
(PERT) probabilistic scheduling and time-cost trade-offs including crashing and fast-tracking; and (4)
resource allocation, schedule control via Earned Value Management, and 2026|2027 advancements in 4D
BIM, AI-driven predictive scheduling, and cloud-based collaborative CPM platforms. The cognitive
distribution is 30% recall, 50% application, and 20% analysis, with 75% of items scenario-based to mirror
authentic field decision-making. Every calculation-based question provides a step-by-step mathematical
rationale, and distractors are intentionally engineered to reflect the most common student errors (e.g.,
confusing total float with free float, inverting the PERT te weighting, mis-identifying the critical path when
a non-critical delay exceeds float, and misapplying crashing cost-slope priority). The accompanying
grading rubric establishes point allocation, partial-credit rules, and mastery thresholds aligned with LSU
CM 4223 learning outcomes and PMI/AGC professional standards.
Keywords: Work Breakdown Structure (WBS); Critical Path Method (CPM); PERT; Total Float; Free
Float; Schedule Crashing; Fast-Tracking; Resource Leveling; Earned Value Management (EVM); 4D
BIM; AI Predictive Scheduling; LSU CM 4223.
How to Use This Document
Each of the 40 questions is presented in the prescribed format: question stem, four options (A-D) with the single
correct option explicitly marked [CORRECT], the "Correct Answer" line, and a 1-2 sentence step-by-step
Louisiana State University - Construction Management Program - 2026|2027 Academic Year
,LSU CM 4223 - Module 4 Quiz (Chapters 5-6) | Fall 2026 | 100% Correct Solution Key Page 2
rationale that demonstrates the mathematical or logical solution and explains why each distractor represents a
specific common student error. A complete grading rubric with point allocation, partial-credit rules, and mastery
thresholds follows Q40. Students are encouraged to attempt all items first without consulting the rationales, then
review the worked solutions to identify and correct conceptual gaps.
Louisiana State University - Construction Management Program - 2026|2027 Academic Year
, LSU CM 4223 - Module 4 Quiz (Chapters 5-6) | Fall 2026 | 100% Correct Solution Key Page 3
Section 1: Project Planning, Work Breakdown Structures (WBS), and Bar
Charts
Q1. The primary purpose of a Work Breakdown Structure (WBS) is to:
A. Sequence project activities chronologically along a calendar timeline
B. Subdivide the total project scope into manageable, deliverable-oriented work packages
[CORRECT]
C. Allocate labor and equipment resources to specific construction crews
D. Calculate the critical path duration using the CPM forward pass
Correct Answer: B | B. Subdivide the total project scope into manageable, deliverable-oriented work
packages
Rationale: A WBS is a deliverable-oriented hierarchical decomposition of total project scope (PMI PMBOK and LSU
CM 4223 Ch. 5). Sequencing (A) is performed later in CPM logic; resource allocation (C) follows work-package
definition; and the critical path (D) is computed from the schedule, not the WBS.
Q2. In a properly decomposed WBS, the LOWEST level of decomposition that produces deliverables and
is suitable for cost/schedule control is called a:
A. Control account B. Planning package
C. Work package D. Summary activity
Correct Answer: C | C. Work package
Rationale: Work packages are the lowest WBS level (typically 80-200 labor-hours per PMI/AGC guidance) where cost
and duration can be reliably estimated and controlled. Control accounts (A) sit ABOVE work packages; planning
packages (B) hold future-scope placeholder budgets under rolling-wave; summary activities (D) are schedule roll-ups,
not WBS elements.
Q3. The "100% Rule" of WBS development states that:
A. The WBS must capture 100% of the project budget but not necessarily 100% of the scope
B. The WBS captures 100% of the work defined by the project scope, and the work at each child level
sums to 100% of its parent [CORRECT]
C. 100% of project activities must lie on the critical path
D. 100% of resources must be assigned before the schedule is baselined
Correct Answer: B | B. The WBS captures 100% of the work defined by the project scope, and the work
at each child level sums to 100% of its parent
Rationale: The 100% Rule is the most fundamental WBS principle: every level of decomposition captures 100% of its
parent scope with no overlap or omission. (A) confuses budget with scope; (C) misapplies critical-path theory; (D)
describes a resource-loading condition, not a WBS rule.
Louisiana State University - Construction Management Program - 2026|2027 Academic Year
LSU - CM 4223 - MODULE 4 - CHAPTER 5-6
Fall Quiz | Questions and Answers | 2026 Update | 100% Correct
Course CM 4223 - Construction Project Planning & Scheduling
Institution Louisiana State University (LSU), Baton Rouge
Module / Chapters Module 4 - Chapters 5 & 6
Topic Coverage WBS, Bar Charts, CPM, PERT, Crashing, Resource Leveling, Schedule Control
Academic Year 2026 | 2027 (Fall Term)
Total Questions 40 multiple choice (4 sections x 10 questions)
Cognitive Mix 30% Recall | 50% Application | 20% Analysis
Question Style 75% scenario-based | 25% direct
Total Points 100 (2.5 points per question)
Standards Alignment PMI PMBOK 7th Ed., AGC of America, AACE International, LSU CM 4223 outcomes
Abstract
This Module 4 quiz assesses mastery of Chapters 5-6 of LSU CM 4223 - Construction Project Planning
and Scheduling. The 40-question instrument is partitioned across four thematic sections: (1) Work
Breakdown Structures and bar-chart fundamentals; (2) Critical Path Method (CPM) network logic with
forward/backward pass calculations and float analysis; (3) Program Evaluation and Review Technique
(PERT) probabilistic scheduling and time-cost trade-offs including crashing and fast-tracking; and (4)
resource allocation, schedule control via Earned Value Management, and 2026|2027 advancements in 4D
BIM, AI-driven predictive scheduling, and cloud-based collaborative CPM platforms. The cognitive
distribution is 30% recall, 50% application, and 20% analysis, with 75% of items scenario-based to mirror
authentic field decision-making. Every calculation-based question provides a step-by-step mathematical
rationale, and distractors are intentionally engineered to reflect the most common student errors (e.g.,
confusing total float with free float, inverting the PERT te weighting, mis-identifying the critical path when
a non-critical delay exceeds float, and misapplying crashing cost-slope priority). The accompanying
grading rubric establishes point allocation, partial-credit rules, and mastery thresholds aligned with LSU
CM 4223 learning outcomes and PMI/AGC professional standards.
Keywords: Work Breakdown Structure (WBS); Critical Path Method (CPM); PERT; Total Float; Free
Float; Schedule Crashing; Fast-Tracking; Resource Leveling; Earned Value Management (EVM); 4D
BIM; AI Predictive Scheduling; LSU CM 4223.
How to Use This Document
Each of the 40 questions is presented in the prescribed format: question stem, four options (A-D) with the single
correct option explicitly marked [CORRECT], the "Correct Answer" line, and a 1-2 sentence step-by-step
Louisiana State University - Construction Management Program - 2026|2027 Academic Year
,LSU CM 4223 - Module 4 Quiz (Chapters 5-6) | Fall 2026 | 100% Correct Solution Key Page 2
rationale that demonstrates the mathematical or logical solution and explains why each distractor represents a
specific common student error. A complete grading rubric with point allocation, partial-credit rules, and mastery
thresholds follows Q40. Students are encouraged to attempt all items first without consulting the rationales, then
review the worked solutions to identify and correct conceptual gaps.
Louisiana State University - Construction Management Program - 2026|2027 Academic Year
, LSU CM 4223 - Module 4 Quiz (Chapters 5-6) | Fall 2026 | 100% Correct Solution Key Page 3
Section 1: Project Planning, Work Breakdown Structures (WBS), and Bar
Charts
Q1. The primary purpose of a Work Breakdown Structure (WBS) is to:
A. Sequence project activities chronologically along a calendar timeline
B. Subdivide the total project scope into manageable, deliverable-oriented work packages
[CORRECT]
C. Allocate labor and equipment resources to specific construction crews
D. Calculate the critical path duration using the CPM forward pass
Correct Answer: B | B. Subdivide the total project scope into manageable, deliverable-oriented work
packages
Rationale: A WBS is a deliverable-oriented hierarchical decomposition of total project scope (PMI PMBOK and LSU
CM 4223 Ch. 5). Sequencing (A) is performed later in CPM logic; resource allocation (C) follows work-package
definition; and the critical path (D) is computed from the schedule, not the WBS.
Q2. In a properly decomposed WBS, the LOWEST level of decomposition that produces deliverables and
is suitable for cost/schedule control is called a:
A. Control account B. Planning package
C. Work package D. Summary activity
Correct Answer: C | C. Work package
Rationale: Work packages are the lowest WBS level (typically 80-200 labor-hours per PMI/AGC guidance) where cost
and duration can be reliably estimated and controlled. Control accounts (A) sit ABOVE work packages; planning
packages (B) hold future-scope placeholder budgets under rolling-wave; summary activities (D) are schedule roll-ups,
not WBS elements.
Q3. The "100% Rule" of WBS development states that:
A. The WBS must capture 100% of the project budget but not necessarily 100% of the scope
B. The WBS captures 100% of the work defined by the project scope, and the work at each child level
sums to 100% of its parent [CORRECT]
C. 100% of project activities must lie on the critical path
D. 100% of resources must be assigned before the schedule is baselined
Correct Answer: B | B. The WBS captures 100% of the work defined by the project scope, and the work
at each child level sums to 100% of its parent
Rationale: The 100% Rule is the most fundamental WBS principle: every level of decomposition captures 100% of its
parent scope with no overlap or omission. (A) confuses budget with scope; (C) misapplies critical-path theory; (D)
describes a resource-loading condition, not a WBS rule.
Louisiana State University - Construction Management Program - 2026|2027 Academic Year
