Utilising 3D solid modelling tools for simplified designing of a small concrete gravity dam

Small concrete gravity dams play a dominant role in controlling the sediment production and flood phenomena at torrential streams. Since 1931, the Greek Forest Service has established hundreds dams of such type in the mountain regions all over the country with practically zero failures. The objective of this article is to illustrate a 3D solid modelling procedure which could be employed on different computer aid design software so as to accomplish a simplified designing of a small concrete gravity dam with structural height and length of 4.2m and 13.14m respectively based on the Greek Forest Service guidelines. Furthermore, the material quantities, which are necessary for the dam's construction, are easily calculated by using the same techniques. The concrete and excavation volumes, which are necessary for the dam's construction, are estimated to 75.43m³ and 27.42m³ respectively. Although the dam designing guidelines may differ among countries, the reader can easily utilise 3D solid modelling tools and modify the gravity dam design according to its country standards.