Title: Build a block corner.
Course: Building Trades II (17009-II) > Section: Masonry: Performing Masonry Skills

Building a block corner should include

- laying out corners in 90-degree orientation, plumb and level
- stepping block back 8 inches on each tail
- maintaining 3/8-inch thickness in the joint.

IRC: Chapter 4 (https://codes.iccsafe.org/content/IRC2018P4) covers code-approved masonry foundation types, installation, and reinforcement based on wall height, widths, and placement on footing. Chapter 4 also covers cement types and allowed joint widths for head and bed joints.

Process/Skill Questions:

- When examining from the exterior, is there a noticeable difference among 8-inch, 10-inch, and 12-inch corners? Why or why not? What are the implications of this?
- Why should a corner be ranged?

NCCER Standards:

Masonry: Level One (L1NCCT28)

- 28105-04 Masonry Units and Installation Techniques