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In order to accurately design an OWSJ, engineers judge the joist span between bearing points, joist spacing, slope, live loads, dead loads, collateral loads, wind uplift, deflection criteria and maximum joist depth permissible. Many steel joist manufacturers provide load tables in order to allow designers to select the mainly efficient joist sizes for their projects.
While OWSJs can be adapted to suit a large variety of architectural applications, the greatest economy will be realized when utilizing standard particulars, which may vary from one joist manufacturer to another.
Some other shapes, in addition to the parallel top and bottom chord, are single slope, double slope, curved, gable and scissor configurations. These shapes may not be existing from all joist manufactures, and are typically supplied at a premium cost that reflects the complexity required.
OPEN WEB JOIST (STEEL)
The
open web steel joist (OWSJ) is a lightweight steel truss consisting, in the usual
form, of parallel chords and a triangulated web system, proportioned to span
between bearing points.
The
key function of an OWSJ is to provide straight support for roof or floor deck
and to transfer the load imposed on the deck to the structural frame i.e. beam
and column.
In order to accurately design an OWSJ, engineers judge the joist span between bearing points, joist spacing, slope, live loads, dead loads, collateral loads, wind uplift, deflection criteria and maximum joist depth permissible. Many steel joist manufacturers provide load tables in order to allow designers to select the mainly efficient joist sizes for their projects.
While OWSJs can be adapted to suit a large variety of architectural applications, the greatest economy will be realized when utilizing standard particulars, which may vary from one joist manufacturer to another.
Some other shapes, in addition to the parallel top and bottom chord, are single slope, double slope, curved, gable and scissor configurations. These shapes may not be existing from all joist manufactures, and are typically supplied at a premium cost that reflects the complexity required.
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