Tanzania Journal of Engineering and Technology (Tanz. J. Engrg. Technol.) emerged in 2006 from Uhandisi Journal, which was established in 1974. From 1974 to 2005, the Journal was published in print form in the name of Uhandisi Journal. However, efforts were made to ensure that all available past articles are scanned and uploaded online to preserve the history and track record of the Journal. Following institutional transformation of College of Engineering and Technology at the University of Dar es Salaam, it was considered necessary to change the name of the Journal in order to meet new challenges and opportunities over the years. From 2006, the Journal name was changed to Tanzania Journal of Engineering and Technology (Tanz. J. Engrg. Technol.). The Journal is a forum for communication and dissemination of applied sciences, engineering and technological research between and among Engineers, Scientists, allied professionals and the general public. It is published in both print and electronic forms by the College of Engineering and Technology twice a year, in June and December.