Una-Lam often provides material for unique projects. This residence, now under construction, is no difference. In this case, we were not only the material supplier, our in-house professional engineer provided the design expertise for our beams. This photo shows the house framing from the north end, and shows six of the ten arches that will form the structural framing for the house. Each frame is 40' out to out, with a curved upper "beam" section with a kerfed shear splice to the column sections. All members have a constant 6.5" x 24" cross section and the inside radius is 5'-0". To get the tight 5' radius, we had to use even thinner material than usual. 1" nominal (0.667") plies can only be bent to 7' radius. These are true 0.5" plies.
All of the columns have fixed moment connection bases, which provide the building's lateral resistance in both directions. When complete, most of the facade will be glass with no shear walls. You can see the base connection on the nearest frame in the photo. For the other frames, the columns and base connections extend below the floor level for concealment. Also, for cosmetic reasons we worked to line up the glue lines at the splice.
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