"To whom it may concern,
I am head of surveying on the OLRT Tunnel project in Ottawa, Ontario, Canada. I have over 20 years of experience in tunneling construction all over the world. I have worked with several surveying programs to generate tunneling take offs and as-builts. Since the commencement of the OLRT project, we have had an agreement with the Spanish company, Aplitop, for a tunneling survey application. With this letter we would like to state that this program is covering all our needs in in terms of excavation, shotcrete measurements and lining as-built. We collect field data from many different sources including the Leica roadrunner application, the guidance systems on the various tunneling machines and the new Leica TS50 scanning portion of the tunnel. All of these formats are supported by TcpScancyr and we get very good result directly in DXf for the drawings and in excel spreadsheet for records and calculations. Tcpscancyr is very powerful because it manages a large cloud of points really quickly. The interface is also very user friendly with rich possibilities to extract information. The application also understands the majority of formats for alignment and sections like cad, xml, etc.
In addition, TcpScancyr can easily make all the symmetric and asymmetric lineal transitions. However the best aspect of this application agreement, is the great attitude of the technical support personal. They have diligently and quickly worked to solve all the challenges that we have posed to them to date.
Therefore, I would strongly recommend this surveying as-built program for any type of cavern and tunneling projects."