Blueprints, Schematics, & Specifications Flashcards
7 cards from real CPI practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Blueprints, Schematics, & Specifications flashcards as text
Which type of line on a mechanical drawing indicates a hidden edge or feature not visible from the current view?
Answer: A dashed or hidden line
Hidden lines are drawn as evenly spaced dashes to represent edges or features that exist behind the visible surface in that view.
A specification calls for conduit installed 'concealed in walls.' If the inspector finds exposed conduit in the same wall, what is the proper course of action?
Answer: Remove and reinstall per the specification
Work that does not conform to specifications must be corrected to match the specified requirement unless a formal change order is approved.
On electrical drawings, what does the symbol of a circle with an 'X' inside typically represent?
Answer: An incandescent light fixture
A circle with an X is the standard symbol for a ceiling-mounted incandescent or general-purpose light fixture on electrical floor plans.
What is the purpose of a 'cut sheet' or product data sheet referenced in project specifications?
Answer: It provides manufacturer technical details for specified products
Cut sheets are manufacturer-provided documents that detail product dimensions, ratings, installation requirements, and performance data to verify spec compliance.
A drawing title block shows 'Rev: C.' What does this indicate?
Answer: The drawing has been revised three times since the original issue
Revision letters (A, B, C…) track how many times a drawing has been updated; Rev C means the drawing has gone through three revisions after the original.
What does a 'detail drawing' provide that a general floor plan typically does not?
Answer: Enlarged views with precise dimensions of specific assemblies or connections
Detail drawings zoom into complex joints, connections, or assemblies to show exact construction methods and dimensions that cannot be clearly shown at floor-plan scale.
On a plumbing isometric drawing, lines are drawn at what angle to represent horizontal runs?
Answer: 30° from horizontal
Plumbing isometrics use a 30°/30°/90° axonometric projection where horizontal pipes are drawn at 30° to give a three-dimensional appearance.