In this article (and video above), we calculate the projected life of a new landfill. This problem type might be found in the Water Resources and Environmental section of the FE Exam and will help you prepare for your FE Exam. This problem was created and solved by Engineer in training, Enrique Ivers, LEED Green Associate.
A waste management company wishes to calculate the projected life of their new landfill. The landfill is 500m x 200m in plan area and 30m deep. The average daily filling pattern, after compaction of refuse, is expected to be 20 m x 10 m x 4m deep. The daily cover stipulated by local ordinance is 15 cm per day. The company will operate the landfill Monday through Friday, every week in the year, with no holidays. The projected life of the landfill is most nearly:
We can make quick work of this problem with the information given:
We can then model the equation for the projected life of the landfill:
The correct answer is C.
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I hope you found this week’s FE Environmental engineering exam prep question helpful. In upcoming articles, I will answer more FE Exam questions and run through more practice problems. We publish videos bi-weekly on our Pass the FE Exam YouTube Channel. Be sure to visit our page here and click the subscribe button as you’ll get expert tips and tricks – to ensure your best success – that you can’t get anywhere else. Believe me, you won’t want to miss a single video.
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I’ll see you next week.
Anthony Fasano, P.E.
Engineering Management Institute
Author of Engineer Your Own Success