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Many property owners, engineers, planners, and developers have probably noticed some commonly odd measurements that often appear when measuring land and may have asked some of the following questions. Why is it common for a street right-of-way to measure 66 feet in width? Why are alleys commonly 16.5 feet wide? Why do we use acres to measure land area? The Gunter’s Chain is a device that was first introduced in 1620 and was used to survey not only the British Empire, but also the wilderness and early American settlements. The Gunter’s Chain measures 66 feet in length and consists of 100 links usually marked off into groups of 10 by brass rings or tags. Though this device has become obsolete, it’s use has left an imprint on our nation’s history and how property has been measured and divided. The chain, the link, and the rod have all became statutory units of measurement that were made convenient by the Gunter’s Chain. 1 chain = 66 feet 1 link = 0.66 feet or 7.92 inches 1 rod = ¼ chain or 16.5 feet 1 furlong = 10 chains or 660 feet 1 mile = 80 chains or 5,280 feet 1 acre = 10 square chains or 43,560 square feet
ERA provided design assistance and recommendations for the development of the Harvest Wind Ridge Farm in Douglas County, IL. Existing bridge and culvert crossings were analyzed to provide safe routes for hauling the necessary materials and equipment for construction of the 48 wind turbines. The 600’ tall turbines, the largest of their kind in North America, will provide enough clean energy to power approximately 70,000 homes.
 In the spirit of the holiday and giving back, ERA employees collected donations for Toys for Tots that were contributed to the APWA Chicago Metro Chapter collection efforts this year!
ERA has drones! These unmanned aerial vehicles can rapidly acquire data previously inaccessible by traditional methods and in a fraction of the time. Drones provide quality results quickly and safely, and we are excited to utilize them in many of our engineering projects.
Construction is underway to complete ADA improvements at the Naperville Metra Station. ERA teamed with Kluber on this exciting project for the City of Naperville. This project will include replacing the doors on the north and south sides of the station, as well as the station walkway and adjacent sidewalk on the south side of the building. These enhancements will improve the function of the station and enhance safety for train station users.
 ERA wishes marketing specialist, Carol Ksiazek, a wonderful retirement at the end of November. Thank you for serving our company for the past seven years--you will be missed!
 ERA attended it's 2nd WAFSCM Conference earlier this week! We are excited about the new and exciting opportunities we are starting to explore in the Wisconsin territory! Hopefully if you were in attendance you got to play our new Duck Pull Game at our booth!
 ERA recently got the exciting opportunity to create preliminary designs for a stormwater improvement project with MWRD in Northfield Township. #ERA #stormwater #engineering
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ERA ConsultantsEngineering Resource Associates, Inc. (ERA) is a consulting firm providing civil engineering, structural engineering, environmental science, and surveying. Archives
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