Tunnels allow people to cut through tall mountains or even travel deep underwater. Discover the engineering behind tunnels.

Explores the engineering challenges behind building tunnels, as well as the creative solutions found to overcome those challenges. Accessible text, vibrant photos, and an engineering activity for readers provide a well-rounded introduction to the engineering process.

Introduces engineering concepts through twenty-five simple experiments that involve building several bridge and tunnel models.

Still suffering the devastation of the Civil war that ended only ten years earlier, North Carolina shipped prison inmates from Raleigh to build the Mountain Division of the western North Carolina railroad. Some amazing and astonishing events occurred from 1875 through 1879 as this mountain railroad (3 miles straight-line distance, requiring 9+ miles of track) was pushed up the eastern continental divide. Six tunnels were excavated, from 89 to 1,800 feet long, each 15 feet tall. For open cuts, solid rock was cracked by dousing cold mountain water on roaring fires. The first use in the southeastern U.S. of a new product called Nobel's Blasting Oil (now called nitroglycerin!) was on the project. It was mixed with sawdust and corn meal, making nitroglycerin mash. A very heavy wood-burning locomotive was picked up off the tracks by the convicts and pushed several miles overland to the top of the mountain to help dig out the longest tunnel. The most common tool used was a flat rock held in the strong hands of the convicts to dig and spread dirt as they prepared the flat path needed to lay crossties for the rails. Tunnels, Nitro and Convicts condenses the incredible history of the most ambitious earth-moving, mountain-conquering project in the United States as of the 1870s into an engaging, easy-to-read story. The fascinating and compelling intertwining of long dark caves, blasting and cracking of massive rocks, the first use of nitroglycerin in the southeastern United States, and pushing a big locomotive several miles through the woods up a mountain ... all by hundreds of convicts who worked under severe conditions with the most basic tools ... makes this true account of post-civil war railroad history a story you must read!

This text describes topics discussed at the conference, including: tunnelling and construction in soft ground and rocks; geological investigations; tunnelling machines; planning for underground infrastructure; safety issues and environmental and social aspects of underground development.

Crossing Under the Hudson takes a fresh look at the planning and construction of two key links in the transportation infrastructure of New York and New Jersey--the Holland and Lincoln Tunnels. Writing in an accessible style that incorporates historical accounts with a lively and entertaining approach, Angus Kress Gillespie explores these two monumental works of civil engineering and the public who embraced them. He describes and analyzes the building of the tunnels, introduces readers to the people who worked there--then and now--and places the structures into a meaningful cultural context with the music, art, literature, and motion pictures that these tunnels, engineering marvels of their day, have inspired over the years. Today, when new concerns about global terrorism may trump bouts of simple tunnel tension, Gillespie's Crossing Under the Hudson continues to cast a light at the end of the Holland and Lincoln Tunnels.

This title discusses how tunnels are built, from planning and excavation to construction to site design.