1. Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS Persiaran UTP, Seri Iskandar, Perak
2. Department of Civil Engineering, Hussaini Adamu Federal Polytechnique, Kazaure, Jigawa State, Nigeria
3. Civil Engineering Department, Universitas Islam, Krawitan, Umbulmartani, Ngemplak, Sleman Regency, Special Region of Yogyakarta, Indonesia