Case study: Music City Center green roof

January 1, 1970  |  Case Studies

By Allan Wingfield Nashville’s new Music City Center convention facility features a unique sloped green roof design designed to mimic Tennessee’s rolling hills. There is a 65-ft difference in elevation from the northwest corner of the site to the southeast corner. Many challenges needed …
Geosynthetics in the Greater Grand Forks Greenway

January 1, 1970  |  Case Studies, Erosion Control

By Adam Regn Arvidson The turf reinforcement mat (TRM) in the Red River Greenway project is Enkamat, manufactured by Colbond, a Dutch company with production facilities in Europe and the U.S. The 3-dimensional nondegradable matting is made of continuous nylon or polypropylene filaments fused at thei…
Geotextiles in unpaved roads: A 35-year case history

January 1, 1970  |  Feature, Geotextiles, Separation, Testing & Materials, Transportation

By William M. Hawkins Abstract This article presents current information on geotextiles installed experimentally in an unpaved road 35 years ago. In 1972, geotextiles were largely untested, and the site was set up as an accelerated field test to determine the comparative performances of several fabr…
Strength without density: Geofoam at work on the CAS green roof

January 1, 1970  |  Case Studies

An innovative redesign transforms the California Academy of Sciences. By Shelby Gonzalez Introduction The California Academy of Sciences (CAS) in San Francisco has completed a transformation. Its innovative redesign has already gained international recognition as a cultural icon. Under one “living…
History of the Kam Kotia Mine

January 1, 1970  |  Case Studies, Environmental

By Bruno Herlin, P.Eng. Introduction The former Kam Kotia Mine was in operation for several decades, rendering copper, zinc, and secondary silver and gold. The site is located in northeastern Ontario, within Robb Township, northwest of the city of Timmins. This abandoned site had approximately 6 mil…
The “disappearing” island of Sylt

January 1, 1970  |  Case Studies, Erosion Control

Located 20km (13 miles) west of the German/Danish border lies the island of Sylt. The long, narrow island (pronounced Zoolt) is the northernmost point of Germany. Sylt lies in the North Sea off the coasts of Denmark and the German state Schleswig-Holstein. It is the largest island of the Frisian arc…
It was 1961 and I was in Wilmington, Delaware

January 1, 1970  |  Case Studies

A personal sidebar by Bob Koerner Introduction By 1961, I was 27, married to Paula, and we had two young sons, Michael and George. Academically, I had received my BSCE degree from Drexel in 1956, with one course in soil mechanics, and half of a master’s degree at Columbia with two courses in soil …