CEC Blueprint Reading & Interpretation 3

Question 1

A structural drawing shows a beam callout of 'W18x97.' What does the '97' represent?

Accepted Answer

The weight per linear foot in pounds

Answer

In wide-flange beam nomenclature, W18x97 means a wide-flange section approximately 18 inches deep weighing 97 pounds per linear foot.

Question 2

What is the purpose of a keynote legend on a construction drawing?

Accepted Answer

To provide a numbered reference system linking symbols on the drawing to specification items

Answer

A keynote legend matches numbered or lettered symbols placed on the drawing to corresponding material or specification descriptions, reducing cluttered text on the drawing.

Question 3

On a plumbing drawing, what does the abbreviation 'I.E.' refer to?

Accepted Answer

Invert elevation

Answer

I.E. stands for invert elevation, which is the elevation of the inside bottom of a pipe, critical for calculating pipe slopes and depths in estimating.

Question 4

A civil grading plan shows existing contour lines that are closely spaced together. What does this indicate?

Accepted Answer

A steep slope requiring significant cut or fill

Answer

Closely spaced contour lines indicate rapid elevation change over a short horizontal distance, signaling steep terrain and potentially large earthwork quantities.

Question 5

When reading a door schedule on architectural drawings, what critical estimating information is typically NOT found there?

Accepted Answer

Rough opening framing dimensions

Answer

Door schedules list door size, frame type, hardware group, and fire rating, but rough opening dimensions are typically shown on the framing drawings or specifications, not the door schedule itself.

(CEC) Construction Estimator Certification Practice Test

(CEC) Construction Estimator Certification Practice Test

CEC Blueprint Reading & Interpretation 3