Evaluation of traditional Iranian architectural arcs for optimum geometry design of single-layer diamatic lattice space domes.

This article focuses on optimizing the geometry of single-layer diamatic lattice space domes by drawing inspiration from traditional Iranian architectural arches and domes. Seven common Iranian arch types—Se-Bakhshi, Panj-O-Haft, Hasht-O-Panj, Se-Ghesmati, Shakhbozi, Patopa, and Shabdari—were geometrically modeled and compared with a conventional spherical dome design using structural analysis and Load and Resistance Factor Design (LRFD) methods. Results indicate that domes based on Se-Bakhshi, Panj-O-Haft, Hasht-O-Panj, Se-Ghesmati, and Shakhbozi arches achieve material savings and reduced structural displacements compared to spherical domes, with the Se-Bakhshi arch identified as the most optimal geometry for minimizing weight, displacement, and joint components. The study highlights the potential of integrating culturally significant architectural forms into modern structural design to enhance efficiency and cost-effectiveness, while noting limitations such as the focus on single-layer domes and challenges in automating complex geometries.