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Blueprint Reading & Interpretation Flashcards

7 cards from real BGE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Blueprint Reading & Interpretation flashcards as text
  1. On a utility as-built drawing, what is the primary purpose of recording field-verified measurements?

    Answer: To document actual installed conditions that may differ from design drawings

    As-built drawings capture the actual installed conditions, including any field changes, so future crews have accurate location data.

  2. A cross-section drawing on a BGE gas main blueprint shows a dimension of '42" cover.' What does this mean?

    Answer: The pipe has 42 inches of soil above it

    Cover refers to the depth of soil between the top of the pipe and the ground surface, and 42 inches meets typical minimum depth requirements.

  3. What does a 'slug' or 'title block' on a BGE blueprint drawing contain?

    Answer: Project name, drawing number, revision, date, and approval signatures

    The title block is a standardized section of a drawing that identifies the project, drawing number, revision level, date, and who approved the drawing.

  4. When a BGE blueprint shows a gas service line connecting to a residential meter, where is the 'service termination point' typically located?

    Answer: At the outlet side of the meter

    BGE's responsibility typically ends at the outlet of the meter, after which the customer's piping begins.

  5. A blueprint legend shows a triangle symbol labeled 'CP Test Station.' What does this device do?

    Answer: Provides access points to measure cathodic protection voltage on the pipeline

    Cathodic protection test stations allow technicians to measure electrical potential on buried pipelines to verify corrosion protection is functioning.

  6. On a gas distribution map, a line labeled 'LP' differs from one labeled 'MP' in what fundamental way?

    Answer: LP operates at low pressure while MP operates at medium pressure

    LP and MP designations refer to the operating pressure class of the gas main, with low pressure typically below 0.5 psig and medium pressure above that threshold.

  7. What does 'NTS' mean when noted next to a dimension on a utility drawing?

    Answer: Not To Scale

    NTS means the drawing is Not To Scale, warning the reader that dimensions shown cannot be measured directly from the drawing and written dimensions must be used.