A chronographic protocol for modelling construction projects

The main goal of graphical modelling is to communicate information clearly and effectively through graphical means. Little research has been undertaken in the domain of construction scheduling. It can be noted that there is no standard graphics protocol; therefore, it is up to each individual planner to set his or her own standard. This paper develops a new chronographical conceptual framework that describes all the elements required to perform construction operations, their processes, their logical constraints and their association and organisational models. The protocol studies the suitable visual parameters and their associated values in order to define a standard graphical presentation using shapes, sketches, codes, text, textures and colours. This protocol aims to overcome the current difficulties with graphical visualisation of the considerable amount of data needed for effective planning and to increase the effectiveness of visual research based on human visual habits. The validation process was performed using case studies that evaluated visual data and assessed the necessary mental effort required to find information on the schedule. The graphical convention of textures and colours has already been validated. The results have clearly demonstrated that this convention helps to simplify the process of searching for information on the schedule.