This design manual was published in 2008 using the 13th Edition of the AISC Steel Construction Manual. The content is more-or-less a functional commentary on the intricacies of single angle member design. Whitney McNulty addresses how the geometry and orientation affect the stress distribution and applicable limit states. The observations McNulty makes will help designers identify how to properly design angles, which are commonly used but generally misunderstood. The chapter on flexural design will benefit designers using angles as masonry supports and light-weight beams.