A logic-based representation and tree-based visualization method for building regulatory requirements

Background: Many research and development efforts have been made for automated compliance checking of building designs with regulatory requirements, but there is a lack of a non-proprietary and user-understandable representation of building regulations to support automated compliance checking in the construction domain that is experimentally tested for understandability and reading speed. Methods: This research investigates a logic-based representation and tree-based visualization method for building regulatory requirements. The logic-based representation is based on classic logic programming language and can directly support automated compliance checking. The tree-based visualization is expected to improve the understandability and reading speed of the logic-based representation. Therefore, this method attempts to add to the limited research in non-proprietary and user-understandable representation of building regulations that is experimentally tested for understandability and reading speed. To test the understandability and reading speed of regulatory requirements using this representation and visualization method, a survey was conducted to compare different representations, namely, text, logic-based, and tree-based. Results: Statistical analysis of the survey results shows that the proposed tree-based visualization method can significantly improve the understandability and reading speed of the logic-based regulatory requirement representation and this visualization method is at a comparable status with the original text representation of regulatory requirements in terms of understandability and reading speed. Conclusions: (1) The investigated logic-based representation and tree-based visualization method for regulatory requirements serves as one potential non-proprietary and user-understandable representation of building regulations; (2) this research shows that computable representations of regulatory requirements can achieve understandability and reading speed that are comparable to the original text representation through tree-based visualization; and (3) this research reveals that the tree-based visualization of regulatory requirements improves the understandability and reading speed of regulatory requirements when such use is compared to the computable logic-based representation.