Steel Joists & Joist Girders
Open web-steel joists are an engineered, truss-like construction component used to support loads over short and long spans alike. Typically used in non-residential construction, steel joists and joist girders provide an economical system for supporting floors and roofs. All Vulcraft joists and joist girders are designed and manufactured in accordance to the exacting specifications of the Steel Joist Institute.
Joists are separated by type and designated by letters: K, KCS, LH, DLH and SLH. The K and KCS joists are used for shorter span conditions where lighter loads are required. These joists are typically used in roof structures. KCS joists are a version of the K-series joists, but designed for a constant shear and moment, which allows for greater flexibility for locating extra loads such as those from rooftop units. LH- and DLH-series joists are for longer span conditions and are capable of supporting larger loads. These joists allow for special profiles to accommodate a variety of conditions. Some of the typical special profiles include gable joists and arched joists. SLH-series joists are used to support loads over very long spans, typically 120' and greater.