Omni Block stretcher and corner/jamb block meet ASTM C-90 Standard Specification of Loadbearing Concrete Masonry Units (CMU) and exceeds all minimum requirements as set forth in the ASTM C-140 Standard Test Methods for Sampling and Testing.
These two tests are nationally recognized as the fundamental tests that standard CMU must pass to be considered a structural block. The over 100 variations (bond beam block, half block, solid bottom bond beam block, U-shaped block, etc.) all must pass the ASTM C-90 and C-140 tests in order to be considered “structural”. The same is true of the three 8″ and two 12″ Omni Block units. None of these CMU types require an ICC report, rather all are engineered using The Masonry Society (TMS) standard tables. Therefore, the Omni Block stretcher and corner/jamb block are in the same classification as standard CMU.
Engineering software, such as MASONRY SLENDER WALL PER IBC-2006, MSJC-05, SECTION 3.5.5 can be used for all structural designs.
Omni Block does not employ any structural engineers and therefore relies on the independent professional engineer to structurally engineer Omni Block, with an eye that Omni Block is an insulated system, so every additional grout cell that is not required negatively affects its thermal properties and advantages).
A Complete Set of Stamped Engineering Calculations are included here to illustrate how structural engineers calculate rebar and grout requirements in the individual block units for Omni Block walls and lintel designs.
The pages below are an example of how a structural engineer, very familiar with Omni Block, engineered a building using Omni Block.