<p>Generally, two-pass lining systems are used for transportation tunnels constructed using the New Austrian Tunneling Method (NATM). The initial lining can support a significant portion of the long-term ground loads and thus reduce the design loads on the ...

<p>The purpose of this Circular is to provide updated information on the state of the practice for the use of inclinometers on highway projects. This instrument technology has more than 50 years of experience. Data evaluation and correction procedures have ...