Are there span tables for cantilever beams?

No. An engineer or architect should design cantilever members. Design of cantilever beams involves many variables including load, cantilever span and interior or back span.

Often the load is not a single uniform distribution over the length of the member, and other additional loads are present, such as point loads at the end of the member. Because the system is composed of two pieces: the cantilever span, and the back span, the placement and magnitude of load on these sections singly or combined will cause different stresses to develop in the member. The designer seeks to find the worst combination of loading that will impose maximum shear, bending, or deflection in the member.

American Wood Council's 2001 Wood Frame Construction Manual has engineered and prescriptive provisions that may give guidance for typical cantilever cases. For example, the Engineered Design provisions for sawn lumber floor joists in 2.3.1.6 state the maximum overhang length is limited to the depth of the ... more.

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