![]() Many dome contractors would mitigate some of these problems by filling and sealing blocks with spray foam and reinforcing with rebar. But the joint between the stem wall and the dome still posed issues. In this case, there was less opportunity for water penetration. Attaching a dome to the top of a concrete block wall would leave gaps, reduce rigidity, and diminish the airtight and watertight capabilities of true domes.Īnother option was poured or prefabricated concrete sections or a full poured-concrete ring base. The dome building would maintain a reasonable amount of strength, but it wasn’t the same as a single-unit structure. Many early stem walls were built with concrete blocks. The two-piece finished product provided many of the benefits of a conventional hemispherical or prolonged ellipsoidal dome, but the separate stem wall wasn’t always ideal. First, the stem wall would be constructed, and then the dome structure would be added on top. When construction firms started building stem wall concrete domes, most were built in a two-stage process. This raised dome changes some of the design requirements of conventional concrete dome structures, but it also comes with specific benefits. ![]() But a stem wall dome instead utilizes a cylindrical or polygonal base on the footings, with the dome structure sitting on top of this base. What Is A Stem Wall Dome?Ĭoncrete domes are often hemispherical structures, with the curve of the dome starting at the foundation. And stem wall domes are especially well-suited for these applications. ![]() And they’re gaining traction nationwide for their ability to host large gatherings without fear for safety or security. They’re popular for schools, community centers, and churches. The word is out: concrete domes make excellent gyms and events centers.
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