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*Not Quite Everything****More of a RefresherWhat exactly is liquid limit? What does plasticity actually mean? What’s the cut-off between a gravel and a sand? We can pretty much blame three people for the majority of the soil classification terminology used in civil engineering today: a Swedish fellow named Albert Atterberg, and two

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When a culvert or storm sewer reaches the end of its useful service life, the option to excavate and replace is commonplace. However, having the additional option to reline the existing structure to provide a structural solution can save significant time and money.But when is it too late?Inspecting the current conditions of the existing pipe is a

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WHAT IS FINITE ELEMENT ANALYSIS?Can you solve this equation by hand?     x + 4 = 7How about this one?  Now we need to solve that another 1000 times to get our answer!Many times engineers are able to use relatively simple methods or calculations that are proven to provide consistent and accurate solutions to everyday problems. Typically these

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Ever had a project with an inconvenient site, whether it was crowded or remote? Or maybe even a project where lots of pipe was needed-and fast? Contech offers an exciting solution to issues like these in which pipe can be rolled on site-that’s right!The MOBILE PIPE® Mill is a modular mill that can be transported from place to place via truck,

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 I’ve recently been seeing engineers choosing what I feel are inappropriate Manning’s “n” coefficients for sewer design.  Some choose too conservative values, while others don’t understand that long term creep within the pipe wall may adversely affect the hydraulic performance of certain pipe types.  A few things to consider are as follows: 

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