ABSTRACT
Reinforced concrete rock sheds have been developed to provide a highly reliable level of protection on major transportation routes, and at tunnel portals. Rock sheds are used extensively in Japan and Europe; Figure 11.1 shows a variety of concrete shed configurations used in Switzerland (Vogel et al., 2009). However, sheds are less common in North America where the traffic volumes are not as high and lower cost protection methods such as barriers and fences are generally accepted.
