Fire and life safety systems for transportation tunnels are of paramount concern. The results of a tunnel fire can be…
Groundwater will go where it wants to go and will exert hydrostatic pressure at the most inconvenient locations. Effective groundwater control is, therefore, one of the key factors to a successful tunneling project.
Retrofitting Seattle’s Mount Baker Ridge and Mercer Island Tunnels using a Saccardo Nozzle.
Trelleborg explains how, by using gaskets that are pre-cast into the tunnel segment during manufacture, installers can save time and money.
A concrete pump and a gunite machine are work tools that can help a contractor turn a nickel’s worth of concrete material into a dime, a quarter or even a dollar using the wet or dry shotcrete process.
Whether the need for ground improvement is known in advance or unexpected, the techniques available are the same. However, the approach to the work is different.
Advancing a tunnel shaft is akin to an archeological dig. The process is relatively slow with the support structure advancing…
Used on a myriad of new and rehabilitation construction projects, cementitious and chemical grouts share a common category and name, but the distinct differences far outweigh the common qualities.
By Britt N. Babcock, P.E. Used on a myriad of new and rehabilitation construction projects, cementitious and chemical grouts…
How to choose the most appropriate method for your project The debate regarding what method of mining to select for…