For gable ends, what is the maximum length a vertical member can be before a lateral brace is required?
The maximum length of the vertical member depends on a number of factors. The first factor is the wind force which in turn depends on the code-defined wind speed, mean roof height, building category, and wind exposure due to topographical conditions. Other factors are roof loads; and size, species and on center spacing of the vertical studs. Clearly it is not a straightforward matter. Luckily most Truss Designers at truss software companies have simplified matters by producing standard tables and details based on these factors. The best way to find the answer to your specific situation is to call your Truss Designer to discuss the gable end bracing details for your project. The Truss Designer may suggest using L-braces along the length of the individual verticals, or horizontal braces that must be stabilized with a diagonal brace that extends into the diaphragms (See Figure 2 attachment is now available). These standard tables do some of the work of the Building Designer with respect t
