Blueprint Reading & Specifications Flashcards

An elevation drawing in architectural drafting primarily shows:

Answer: A vertical, orthographic view of an exterior or interior wall face

Elevations show the vertical face of a wall or building as seen from a perpendicular horizontal viewpoint.

What does GWB stand for in construction drawing annotations?

Answer: Gypsum Wall Board

GWB is a common abbreviation for Gypsum Wall Board, also known as drywall or sheetrock.

On a drawing with a 1:50 metric scale, a line measuring 40 mm on paper represents what actual distance?

Answer: 2,000 mm

At 1:50 scale, multiply the paper measurement by 50: 40 mm × 50 = 2,000 mm actual.

A 'schedule' on construction drawings (such as a door or window schedule) serves what purpose?

Answer: It provides a tabulated list of types, sizes, and specifications for repetitive elements

Drawing schedules organize information about repetitive elements like doors and windows in table form, keyed to plan symbols.

Which line type is used in orthographic drawings to represent the edge of the cutting plane in a section view?

Answer: A long dash-dot-dash line (cutting plane line)

The cutting plane line (long dash–dot or long dash–double dot) shows where the imaginary cut is made for a section view.

When specifications contain the phrase 'or approved equal,' it means:

Answer: A substitute product meeting the same performance criteria may be used with approval

The 'or approved equal' clause allows substitutions if the alternative meets the same technical requirements and is approved.

In first-angle projection (used in some countries), where is the front view located relative to the right-side view?

Answer: To the left of the right-side view

In first-angle projection, the object is between the viewer and the projection plane, so the front view appears to the LEFT of the right-side view.