This document presents an experimental and analytical study on the behavior of checkered steel-encased concrete composite beams. Static load tests were conducted on simply supported rectangular and trapezoidal CSCC beams. The trapezoidal beam carried more load than the rectangular beam due to its geometry. Finite element analysis using ANSYS was also conducted to model the beams. The analytical results closely matched the experimental data, with load variations of 2-4%. CFRP-encased beams were also modeled, showing they could carry over double the load of CSCC beams due to CFRP's higher yield strength. In conclusion, trapezoidal sections and CFRP encasement can increase the load-carrying capacity of composite beams.