Prepare for the AG Mechanics CDE Exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Practice this question and more.


The most common size of a mortar joint is:

  1. 1/4"

  2. 1/2"

  3. 3/8"

  4. 5/8"

The correct answer is: 3/8"

A 1/4" is typically too thin for a mortar joint and may not provide enough support for the bricks or stones. B: 1/2" may be too thick for a mortar joint, resulting in excess mortar that may be unsightly. D: 5/8" is considered large and may not adhere well to the bricks or stones, leading to potential cracking and settling. Therefore, the most common and recommended size for a mortar joint is 3/8", providing a good balance of strength and aesthetics.