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Engineered Lumber

In stark contrast to the materials I used in the Vermont Mini-Cabin, much of the structure of the Park City Modern house is engineered lumber.  The entire floor system is framed from “I-Joists,” or “TJIs” as they are called informally. (The I-Joist was pioneered by the brand TrusJoist Inc., thus the acronym TJI, I think.) The brand is now called iLevel, and is a division of Weyerhauser. Other companies make similar product. The main floor system with the TJIs in place is shown in this photo.

Here’s what is nice about TJIs:

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