Nominal size and actual size
A block’s nominal size describes its place in a modular wall. Actual unit dimensions are shown on the individual drawing. Mortar joints, shape and orientation affect the difference; do not subtract a standard allowance from every dimension.
For example, the common 8 × 8 × 16 unit is drawn at 7⅝ × 7⅝ × 15⅝ inches. Confirm the exact unit and joint specified for your project. Specialty units, brick-sized pieces, flue openings and finish configurations need their own dimensions.
Choose the shape before the quantity
| Shape | What to look for |
|---|---|
| Common / regular | The wall unit, core arrangement and nominal width. |
| Corner / L-corner | The corner geometry and any groove, bullnose or radius. |
| Bullnose / bullet | The rounded edge, number of rounded corners and orientation. |
| Bond beam / lintel | The channel or opening for the specified reinforced assembly. |
| Scored / fluted / split-face | The face treatment and which faces need the finish. |
| Solid / slope / architectural | The individual profile and dimensioned drawing. |
| Chimney | The stated flue opening; confirm the complete chimney assembly. |
Item references and options
Use the product name, drawing and selected option together when discussing an order. A few item references are reused for different shapes, so a number alone may not identify the unit.
Lightweight and concrete option labels follow the available product reference. Listed weights and pallet quantities are planning references, not a stock or shipping promise. Ask Krebs to confirm the current unit, packaging and lead time. A special-order designation may apply to a particular configuration.
Working with an 8-inch module
An 8-inch course and a 16-inch unit length provide a modular starting point. Coordinate openings, corners, joints and structural details with the project drawings. The reference grid illustrates the module; it is not a construction plan.
Use these resources to prepare for a project conversation. Confirm current products, dimensions and availability with Krebs; construction and performance requirements must follow the project’s applicable specifications.
Talk with the Krebs Team ↗