1. Civil Engineering Department, Pan African University Institute for Basic Science, Technology and Innovation Hosted at Jomo Kenyatta University of Agriculture and Technology , P.O. Box 62000-00200, Nairobi, Kenya
2. Department of Construction Technology and Management, Addis Ababa Science and Technology University , P.O. Box 16417, Addis Ababa, Ethiopia
3. Administration and Finance, Commission for University Education , Nairobi, Kenya
4. Civil and Structural Engineering Department, Moi University , Eldoret, Kenya