This repository contains the results of discrete element simulations used to study the response of vertically-spanning unreinforced masonry walls under different wall configurations. The simulations are run using the software package UDEC 6.0 (Itasca). The repository contains 2 datasets: '01_UDEC_VALIDATION' contains UDEC source files and model outputs used for the validation of the discrete element model against the results of static pushover, free-release and shake table tests; '02_UDEC_RESULTS' contains UDEC source files and model outputs used for the parametric study performed to study the response of different wall configurations. These datasets have served as basis for the study conducted in: Godio, M., & Beyer, K. (2018). Evaluation of force-based and displacement-based out-of-plane seismic assessment methods for unreinforced masonry walls through refined model simulations. Earthquake Engineering & Structural Dynamics. Accepted for publication. DOI:10.1002/eqe.3144