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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 am often asked, "How much does a reline project cost?".  Before making an attempt to answer this let’s begin with some perspective, relative to traditional approaches.  When comparing reline options to open cut and replace options, segmental sliplining is nearly always the most cost-effective approach, unless the site has some unusual features

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In Part 1 of this blog article series, we touched on the basic fundamentals related to selecting material type, structure type, structure shape and size selection for culverts and buried bridge structures. Part 1 of this series was intended to be a brief overview of the various key factors related to the process of logical structure selection.In

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A key element in the process of selecting a choice for culverts or buried bridge type structures is the determination of appropriate shapes and sizes of structure to fit a given site application. While this might seem a fairly innocuous task, it actually brings into play a number of practical and functional issues and concerns related to the

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There are a whole lot of different types of pipes and pipe joints used in the civil engineering industry.  This blog will focus on those associated with sanitary sewer, storm sewer and drainage applications.  What are the different ratings?  How are they defined?  How are they quantified or tested?  All good questions.  I will be referencing mostly

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