Decision aids for tunneling (DAT), a computer-based tool, are used to determine tunnel
construction cost and time as well as other information related to tunnel construction. Most
important, the DAT allow uncertainties to be considered, an essential aspect in modern
project and construction management. A brief overview of the DAT and of a variety of
applications is first provided to (re) familiarize the reader. Emphasis is then placed on two
recent DAT applications, namely, updating and resource management. Updating uses …

The Decision Aids for Tunnelling (DAT) are a computer based interactive tool with which
tunnel construction cost, time and resource requirements can be estimated. It is possible to
include uncertainties if desired and thus have results in form of distributions which are
needed in modern decision making. The paper briefly reviews the basic structure of the DAT
and then discusses applications such as cost, time and resource estimation for transalpine
tunnels. Following this, and most important in the context of this lecture series, are …