Lessons Learned from Architectural Lunch-N-Learns: The Advantages of CMU

Words: Mark Wilhelms

Over the past few years, Lunch-N-Learns have become an invaluable platform for bridging gaps between architects and the masonry industry. These workshops have allowed block manufacturers to share knowledge, discuss challenges, and collaborate on innovative solutions. Through these interactive sessions, a deeper understanding of how architects view the industry, areas where they lack knowledge, and ways to enhance and streamline their masonry design abilities are gained.

For many architects, Lunch-N-Learns are eye-opening experiences. They uncover the diverse and nuanced possibilities that masonry provides, ranging from modern, sleek designs to traditional, rustic looks. The fresh perspective sparks creativity and broadens the potential for imaginative design concepts. Their enthusiastic response to presentations on unique masonry styles, innovative techniques, and customization options has been rewarding and insightful.

Here is a recap of the lessons learned in architectural Lunch-N-Learns.

Aesthetic Options
One of the most enlightening observations is realizing how many architects are not informed about the variety of masonry styles and options that are available to them. While architects are generally familiar with the basics of concrete masonry units (CMU), many have been surprised by the diverse styles, textures, colors, and finishes at their disposal.

CMU comes in a variety of finishes, including smooth surfaces, rugged textured split-face, and a highly refined polished finish. Other finishes to explore are the burnished and blast-face options from companies like Best Block®, as well as a Best Brik™ product that replicates the look of brick while maintaining the structural advantages of CMU. Complementing the array of finishes, CMU also features a broad spectrum of colors and blends that use local aggregates to create a look unique to the project region. The extensive color palette lets architects and builders match almost any hue, giving them the freedom to achieve their vision.

Designers can let their creativity roam free as they explore the aesthetic options available in modern concrete masonry materials. Seeing how simple changes in bond patterns can impact elevations, combined with the introduction of innovative materials like large-format 16”x32” units, the possibilities are virtually endless.

Changing Perceptions
We often hear about masonry being “slow.”

Masonry can be just as quick, if not quicker, than building with other materials. Prospective partners are pleasantly surprised when comparing construction schedules and showing them that block work starts immediately after foundations are ready. The project is not stalled by shop drawing and fabrication lead times as with other structural systems.

As an experienced architect said, “With concrete block, you just pick up the phone, make the change, and it’s done.”

Any seasoned mason will agree that masonry is quite forgiving and flexible. It allows for corrections in various situations such as out-of-level foundations, misplaced openings, and height changes that become necessary due to errors in how other materials are placed. When architects are reminded about the advantages of field-built walls, they appreciate the expedited masonry construction process even more.

Limited Understanding of Energy Code Compliance
Despite the many positive aspects, there are some notable gaps in architect knowledge, particularly in energy code compliance. Energy code compliance remains a challenging frontier for some architects who may not fully grasp the various options available for masonry structures.

A common mistake is not recognizing how the mass of masonry naturally contributes to energy efficiency in buildings. Some architects incorrectly assume that lower R-values reflect poor-performing buildings. This misconception often leads to an undervaluation of the benefits that mass provides to a structure. Mass walls enhance energy cost management by improving thermal storage and stability while reducing reliance on mechanical heating and cooling systems.

Overlooking the Structural Value of Concrete Block
The structural benefits of concrete blocks are not always fully recognized by architects. Ensuring they recognize these four fundamental concepts can be highly advantageous:

1. Heavily loaded walls need less reinforcement.
2. Bond beams can reduce construction costs.
3. Concrete block outperforms steel over openings.
4. Typical heights for 8” and 12” walls.

Block manufacturers and masonry experts will benefit from, and even have a duty to, informing the design community about the advantages and characteristics of masonry design and application.

What is the Bottom Line?
For the modest price of a group meal, Lunch-N-Learns are proven to be an effective tool for educating architects and learning from them. These sessions have highlighted the importance of showcasing the diverse styles of concrete block. The masonry industry must continue to address misconceptions about energy code compliance, structural capacity, and speed of construction.

We call on our industry to engage with architects and demonstrate the value of concrete masonry systems more actively. It can be easy to overlook the value of meeting the architectural community face-to-face, but the payoff is there. By doing so, we not only help architects design better buildings but also elevate the role of masonry in modern construction. Through continued collaboration and education, we can ensure that masonry remains a preferred and versatile choice in the architectural landscape.

Lessons Learned from Architectural Lunch-N-Learns: The Advantages of CMU

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