In some examples, a computer-implemented method for generating a pipe layout for a platform comprises receiving design data representing a pipe geometry defining an initial pipe layout, generating, using the design data, geometry data representing a set of pipework runs comprising at least one pipe section for the pipe layout, a pipe section defined by a conduit comprising a point of ingress for the conduit in fluid communication with a point of egress for the conduit, determining, using the design data, a set of pipe layout features, generating, using the geometry data, an editable simulated pipe layout, receiving data representing at least one of a component for the editable simulated pipe layout, an annotation for the editable simulated pipe layout, an additional pipework run, and a corrected pipework run, and generating, using the editable simulated pipe layout, output layout data defining the pipe layout for the platform.