Mixed Deck — All CDT Topics Flashcards

What is the first step in the risk management process?

Answer: Identify potential risks through systematic analysis

Systematic risk identification is the foundational first step, as risks cannot be managed or mitigated until they are identified and understood.

Which GD&T symbol is used to control the straightness of a surface or axis?

Answer: Straightness

Straightness is the GD&T symbol that controls how straight a surface line element or axis must be.

Which view in a mechanical assembly drawing shows internal features by imagining a cutting plane through the part?

Answer: Section view

A section view reveals internal features by showing a cross-section of the part as if it were cut by an imaginary plane.

Which NFPA standard governs the installation of sprinkler systems in commercial occupancies?

Answer: NFPA 13

NFPA 13 is the Standard for the Installation of Sprinkler Systems, covering commercial and industrial occupancies.

In drafting door schedules, the notation 'HM' for a door type typically stands for what material?

Answer: Hollow Metal

HM in door schedules stands for Hollow Metal, referring to steel-faced doors commonly used in commercial construction for fire-rated and high-traffic openings.

What is the standard US paper size used for large-format engineering drawings?

Answer: D-size (22 × 34 in)

D-size (22 × 34 inches) is a standard ANSI large-format engineering drawing sheet commonly used for detailed structural and mechanical drawings.

A drafter is tasked with creating a cost estimate for a custom weldment. Which drawing type provides the most complete information for material cost takeoff?

Answer: Detail drawing with weld symbols and material callouts

A detail drawing with weld symbols and material callouts specifies exact dimensions, material grades, and weld types needed for accurate fabrication cost estimation.

Which model code addresses fire prevention and protection requirements, often adopted alongside the IBC?

Answer: IFC

The International Fire Code (IFC) covers fire prevention, protection, investigation, and control requirements.

What is a common feature of CAD software used in drafting?

Answer: Tools for 2D and 3D modeling, dimensioning, and layer management.

A common feature of CAD software is its comprehensive suite of tools for 2D and 3D modeling, dimensioning, and layer management. These capabilities enable designers to create detailed two-dimensional drawings and complex three-dimensional models. Dimensioning tools ensure precise sizing, while layer management helps organize different components and information within a drawing for clarity and control.

Mylar (polyester film) is preferred over vellum for original drawings that will be revised repeatedly because it:

Answer: Withstands repeated erasure without surface degradation

Polyester film is dimensionally stable and its surface can withstand many more erasures than vellum without pilling, ghosting, or tearing.

Why is financial forecasting important for strategic planning?

Answer: It projects future financial conditions to guide resource allocation decisions

Financial forecasting projects future conditions based on trends and assumptions, guiding strategic resource allocation and preparation for anticipated challenges.

When converting a schematic design estimate to a design development estimate, accuracy typically improves because:

Answer: More project details and specifications are defined

As design progresses and more details are defined, estimators can replace assumptions with actual quantities and specifications, improving accuracy.

Under OSHA's exit route requirements, what is the minimum ceiling height for an exit route in a workplace?

Answer: 7 feet

29 CFR 1910.36 requires exit routes to have a ceiling height of at least 7 feet 6 inches, though many sources round to 7 feet for general passages.

Which scheduling method identifies the longest path through a project?

Answer: Critical Path Method determines the minimum project duration

The Critical Path Method identifies the longest sequence of dependent tasks, determining the minimum project duration and highlighting tasks that cannot be delayed.

What is the primary purpose of the Americans with Disabilities Act (ADA) in relation to construction documents?

Answer: To establish minimum accessibility requirements for facilities serving the public

The ADA establishes minimum accessibility requirements ensuring that buildings open to the public are accessible to people with disabilities.

The IBC limits the height and area of buildings based on construction type and occupancy. Which factor can be used to increase allowable building area?

Answer: Providing automatic fire sprinkler protection per NFPA 13

Providing an NFPA 13 automatic sprinkler system throughout the building is one of the primary code provisions that allows for increases in allowable building area and height.

When drafting a site plan, the 'fire separation distance' is measured from the exterior wall face to what reference point?

Answer: The closest interior lot line, centerline of a street, or edge of a public way

Per the IBC, fire separation distance is measured from the exterior wall face to the closest interior lot line, the centerline of a street, or the edge of a public way or imaginary line between two buildings on the same property.

In CAD drafting, what is the purpose of a 'layer' system?

Answer: To organize different types of information so they can be controlled independently

Layers allow drafters to separate elements such as dimensions, annotations, and geometry so each type can be toggled, locked, or plotted independently.

Why are thin features such as ribs and webs typically left unhatched even when the cutting plane passes through them?

Answer: Hatching them would falsely suggest a heavy solid cross-section, misrepresenting their structural role

Leaving ribs and webs unhatched prevents the false impression that they are solid masses, helping readers correctly understand their function as thin stiffening elements.

In technical drawing, 'foreshortening' occurs when:

Answer: A line or surface appears shorter than its true length because it is not parallel to the projection plane

Foreshortening is the visual shortening of a feature when it is inclined to the projection plane, making it appear shorter than its actual length.