Article Sidebar
Published:
Dec 12, 2025Keywords:
Article Details
Tanzania Journal of Engineering and Technology (Tanz. J. Engrg. Technol.) publications are written as a basis for academic discussions. Whereas effort is made by the Editorial Board to screen out inaccurate or misleading statements, data or opinions, Tanz. J. Engrg. Technol. wishes to make it clear that the contents of the articles are the sole responsibility of the authors. Accordingly, the Editorial Board and editors, publisher, College of Engineering and Technology and the University of Dar es Salaam accept no responsibility or liability whatsoever for the opinions, inaccurate or misleading data or statement and views expressed by the authors.
However, the College of Engineering and Technology, the publisher of the Journal, reserve all rights of the articles published in the Journal. Whereas the contents of the articles are available electronically without cost, no part of the publication may be transmitted in any form or reproduced electronically or mechanically, except for short extract in critical scholarly review, research or discourse with an acknowledgement.
Main Article Content
In-Situ Determination of Tension Zone of Sediments by using Dynamic Light Cone Penetration Test: Tropical sediments in Tanzania
Abstract
Dynamic probing of the light hammer (DPL) has been analysed by plotting the penetration index (blows per 10 cm penetration depth). The information obtained provides vital insight into ground profile variation. However, the results presentation and analysis have not been sufficiently investigated in ascertaining more information on the ground properties; therefore, focus on additional analysis techniques are needed to reveal further ground information. This paper aims at exposing the potential of using total penetration blows plots for examining the ground characteristics, narrating procedure for such graphical analysis. The analysis of the results, using total blows on linear and log scales, was performed to determine the tension zone, and the results were compared with the conventional theoretical analysis method using laboratory results from in-situ samples. Results indicate that plotting the DPL results of total blows provides the demarcation of the tension zone of the ground. The results may be applied to provide information on the analysis and design of soil retaining structures, guiding open excavation, soil nailing and assessing the suitable depth of buried structures such as pipelines, monuments, etc, without drilling, sampling and laboratory testing. Therefore, the serving cost and time for establishing such information.
