This document provides a literature review on optimization of castellated beams with stiffeners. It discusses previous research that has studied the behavior and failure modes of castellated beams through experimental testing and finite element analysis. The review found that existing design codes provide empirical formulas for castellated beams but the complex behavior is not fully understood. The objective of the current study is to define the behavior of castellated beams with stiffeners and optimize the stiffener location, size, and thickness to improve performance.