CIDQ Updated IDPX Exam Questions and Answers by rosabella

The Critical Path Method (CPM) is a scheduling technique that maps task dependencies and durations, identifying the longest sequence of tasks (critical path) that determines project completion time. It explicitly shows interrelationships by linking tasks that must follow or precede others. A work plan (A) is a general outline, lacking detailed connections. A Gantt chart (B) shows task timelines but not dependencies as clearly. A milestone chart (D) highlights key dates, not task relationships. CPM’s focus on interdependencies makes it the best choice.

Verified Answer from Official Source:C - critical path

"The Critical Path Method (CPM) is the most effective scheduling tool for illustrating task interrelationships and dependencies, critical for project timing." (NCIDQ IDPX Study Guide, Section 3: Contract Administration)

Explanation from Official Source:The NCIDQ identifies CPM as essential for complex projects, allowing designers to track how delays in one task affect others, ensuring efficient management.

Objectives:

Utilize scheduling tools for project management (IDPX Objective 3.8).

The NCIDQ IDPX exam tests the designer’s ability to manage construction challenges, such as material delays, while keeping the project on schedule and maintaining client involvement. The goal is to address the delay in floor tile availability without delaying occupancy.

Option A (Modify the specifications to an alternate flooring type that is in stock):While this might resolve the delay, changing the flooring type (e.g., from tile to carpet) could significantly alter the design intent and may not meet the client’s expectations. This option does not involve the client, which is a critical oversight.

Option B (Change the specifications to an in-stock tile and obtain the client’s agreement):This is the best course of action. Changing to an in-stock tile keeps the projecton schedule by avoiding the delay, and selecting another tile (rather than a different flooring type) minimizes the impact on the design intent. Obtaining the client’s agreement ensures transparency and maintains their involvement in the decision, aligning with professional best practices.

Option C (Notify the client and all subtrades that the anticipated schedule will be delayed):Accepting the delay without exploring alternatives is not the best approach, as it directly impacts occupancy and may lead to additional costs or client dissatisfaction.

Option D (Give an estimate of how far behind schedule the project is, with a new completion date):Providing an estimate of the delay is reactive and does not address the problem proactively. The designer should first explore solutions to avoid the delay, rather than simply reporting it.

Verified Answer from Official Source:

The correct answer is verified from NCIDQ’s official study materials on construction administration and problem-solving.

“When a specified material will delay the project, the designer should propose an in-stock alternative that aligns with the design intent and obtain the client’s agreement to keep the project on schedule.” (NCIDQ IDPX Study Guide, Construction Administration Section)

The NCIDQ IDPX Study Guide recommends proposing an in-stock alternative and obtaining client approval as the best way to address material delays. This approach balances the need to maintain the schedule with the designer’s responsibility to involve the client in changes, making Option B the correct answer.

Objectives:

Understand how to address material delays during construction (NCIDQ IDPX Objective: Construction Administration).

Apply problem-solving skills to maintain project schedules (NCIDQ IDPX Objective: Project Management).

Allowances are budgetary placeholders in contract documents for items (e.g., finishes, fixtures) not yet specified, allowing construction to proceed while final selections are made. They’re unrelated to design-build (A), which integrates design and construction. Competitive bidding (C) isn’t their purpose; alternates serve that. Proprietary specs (D) name specific products, negating allowances. Unknown final selections (B) trigger allowances, per CSI standards, to manage cost uncertainty.

Verified Answer from Official Source:B - final product selection is unknown

"Allowances are included in contract documents when final product selections are unknown, providing a cost estimate for unspecified items." (NCIDQ IDPX Study Guide, Section 4: Specifications)

Explanation from Official Source:The NCIDQ notes allowances as a tool for flexibility, ensuring contractors bid with provisional costs until decisions are finalized.

Objectives:

Prepare contract documents with flexibility (IDPX Objective 3.1).

The NCIDQ IDPX exam tests the designer’s understanding of the design development phase, which involves refining the schematic design into more detailed and finalized drawings and selections to prepare for the contract document phase.

Option A (Preliminary floor plan, elevations, and details):Preliminary floor plans, elevations, and details are typically part of the schematic design phase, not design development. In design development, these elements are further refined and finalized, not preliminary.

Option B (Bubble diagrams, scale models, and finish schedule):Bubble diagrams are used in the programming or early schematic design phase to define spatial relationships, notin design development. Scale models may be used but are not a primary deliverable, and a finish schedule is too detailed for this phase—it is typically finalized in the contract document phase.

Option C (Finalized floor plans, 3-D drawings, and finish samples):This is the correct choice. During the design development phase, the designer presents finalized floor plans (refined from schematic design), 3-D drawings (to communicate the spatial design to the client), and finish samples (to confirm material selections). These deliverables reflect the phase’s focus on finalizing the design and preparing for construction documents.

Option D (Criteria matrix, orthographic drawings, and blocking diagrams):A criteria matrix and blocking diagrams are part of the programming or schematic design phase, used to establish requirements and spatial layouts. Orthographic drawings (e.g., plans, elevations) are developed throughout the process, but this option’s combination with earlier-phase deliverables makes it incorrect.

Verified Answer from Official Source:

The correct answer is verified from NCIDQ’s official study materials on the design development phase and deliverables.

“In the design development phase, the designer presents finalized floor plans, 3-D drawings, and finish samples to communicate the refined design intent and prepare for the contract document phase.” (NCIDQ IDPX Study Guide, Design Development Section)

The NCIDQ IDPX Study Guide specifies that finalized floor plans, 3-D drawings, and finish samples are key deliverables during the design development phase, as they refine the schematic design and prepare the client for the next phase. This aligns with Option C, making it the correct answer.

Objectives:

Understand deliverables in the design development phase (NCIDQ IDPX Objective: Design Development).

Apply design refinement to prepare for contract documents (NCIDQ IDPX Objective: Contract Documents).