Accurate modeling of an excavation unloading process is challenging due to the complex interactions and couplings between soils and structures which are not easily captured unless robust geotechnical and structural models are used. OpenSees is an opensource numerical platform capable of modeling complex geotechnical and structural systems integrated in a single model using fully coupled fluid-solid and nonlinear element formulations to model partially drained conditions and post-plastic structural behavior. This paper presents general guidelines for future studies of deep excavations in OpenSees along with a proposed quasi-static analysis needed to solve static stage construction-based geotechnical problems under drained, partially drained, or undrained conditions.