| 摘要 |
A building element for use as a column or a beam includes a profile of substantially uniform cross-section extending lengthwise between first and second ends. The profile is defined by a web, a pair of side flanges perpendicular to the web, and curved outer corners joining the side flanges, respectively, to the web. The web includes at least one constriction extending in the same direction as the side flanges and having a pair of arms extending angularly inwardly toward one another from curved inner corners of the web to a curved base having an apex. The side flanges extend from the outer corners to tips, respectively, terminating at side edges, respectively. The building element has an overall width between the web and the tips. The at least one constriction has a width between the web and the apex about ⅓ the overall width. A plurality of the building elements can be assembled in web-to-web relation and/or tip-to-tip relation to obtain various building element assemblies useable as beam assemblies or column assemblies.
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