CDT Industry Standards & Compliance Regulations 2

Question 1

Which ASME standard governs dimensioning and tolerancing practices used in engineering drawings?

Accepted Answer

ASME Y14.5

Answer

ASME Y14.5 is the standard that establishes uniform practices for dimensioning and tolerancing in engineering drawings.

Question 2

What does the term 'datum' refer to in ASME Y14.5?

Accepted Answer

A theoretically exact point, axis, or plane used as a reference for measurements

Answer

A datum is a theoretically exact geometric reference (point, axis, or plane) from which measurements and tolerances are established.

Question 3

When a drawing references ANSI/ASME standards, who is typically responsible for ensuring the drawing conforms to those standards?

Accepted Answer

The checker or approving engineer

Answer

The checker or approving engineer is responsible for verifying that drawings conform to the referenced standards before release.

Question 4

Which organization publishes the standards commonly used for architectural drawing practices in the United States?

Accepted Answer

AIA (American Institute of Architects)

Answer

The AIA publishes standards and guidelines for architectural drawing practices and construction document production.

Question 5

ISO 128 is an international standard that addresses which drafting topic?

Accepted Answer

General principles of presentation in technical drawings

Answer

ISO 128 establishes general principles for the presentation of technical drawings including line types, views, and sections.

(CDT) Certified Drafting Technician Practice Test