Allegheny Structural Components, Inc. is the exclusive manufacturer of OPEN JOIST and OPEN JOIST HD floor trusses and a Master Distributor of open joist TRIFORCE® engineered joists. Allegheny's innovative all-wood products are used in floor framing applications for single-family and multi-family residential construction and for light commercial construction. They are used by on-site builders and factory builders. The leadership staff of Allegheny Structural Components first introduced trim-able open-web floor joist products to the US market in the mid 1990's. The company operates with commitments to quality products, responsive service and expert knowledge of construction techniques.