| http://www.w3.org/ns/prov#value | - Thus, depending on load requirements, either or both the top and/or bottom flanges of an I-joist of the invention may contain one or more of various reinforcing members, which may include aluminum or other alloys, or other materials such as carbon fiber, or glass-reinforced polyurethane (foamed or unfoamed), and may include rods, C- and/or M-shaped channels, channels with center slot, or other con
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