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Airports, theme parks, banks and grocery stores – we’ve all had the annoyance of standing in line, but in the wastewater pipe world, getting “in line” can be a good thing.Traditionally, designers of large diameter wastewater conveyance systems choose to incorporate concrete structures in order to provide necessary access for maintenance, to change

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For this two-part series, we’re going to delve into live loading. A majority of what will be covered in this article goes into design methodology. Additional detail will be included in the follow up, so make sure to check back for that second article. Standard design live load vehicles on corrugated pipe can be mostly broken down into the following

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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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 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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I often receive questions on how to properly design a reline project, from assessment and hydraulics to structural design.  I thought I would take time to discuss one involving the latter in particular.QUESTION: I am doing a reline of a 60" diameter storm sewer. There are a lot of structural design methodologies being touted by various product

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