Blueprint Reading & Interpretation Flashcards

On a structural drawing, what does a dashed hidden line typically represent?

Answer: An edge or feature hidden behind another surface

Hidden lines (dashed) represent edges or features that exist but are not visible from the current view direction.

A plan view drawing of a building is typically a view from which direction?

Answer: Looking straight down from above

A plan view is a bird's-eye (top-down) view, showing the layout of a floor or site as seen from above.

What does the abbreviation 'TYP' mean when noted on a blueprint?

Answer: Typical — applies to all similar conditions

'TYP' (Typical) indicates that the dimension or detail shown applies to all identical or similar conditions on the drawing.

On a site plan, contour lines that are spaced close together indicate:

Answer: Steep slope

Closely spaced contour lines indicate a rapid change in elevation, meaning a steep slope in that area.

Which drawing type shows the internal arrangement of a structure by cutting through it vertically?

Answer: Section view

A section view shows the interior of a structure by depicting a vertical cut through the building, revealing internal construction.

What does the symbol 'Ø' preceding a number on a drawing indicate?

Answer: Diameter of a circular feature

The symbol Ø (phi) is universally used on technical drawings to denote the diameter of a circular element such as a pipe or bolt.

A north arrow on a site plan is used to:

Answer: Orient the drawing relative to true or magnetic north

The north arrow orients the site plan so the reader knows the compass direction of features shown on the drawing.