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KRSSERVICES: I also know of multiple firms who would run a camera throught the piping; but as you suspected, we also would want some analysis to interpret what is seen. I got several good leads from the weftec web site -

Semo & RWF7437, thanks for the info. Both leads provided good info -

I'm looking at a project to have an insitu inspection done of the existing sanitary sewer system on a small gov't facilty. I've only located two potential inspection companies nationwide so far. Does anybody know of companies providing this type of service in the Southwest (New Mexico)? Also...

And all the precision in the world doesn't mean anything if it isn't accurate! And if an engineer doesn't have a "feel" for things like the correct order of magnitude, then it's just a matter of time before they get into trouble on some design because they were precise and wildly...

1. You can design something to be "fool-proof", but you can't design it to be "damn fool-proof" 2. There's a BIG difference between accuracy and precision, and it's more important to be accurate than precise -

If it's available, it might be necessary to use Type V Portland Cement in the concrete mix. It is designed specifically to resist sufate reaction. Also, take a look at a publication put out by the Portland Cement Association entitled "Design & Control of Concrete Mixtures". It...

CarlB: Thanks for the info. The geotechnical report didn't say the equivalent fluid weight could be used that way, but it makes sense. Now I'm wondering why the equivalent fluid wt. is 360pcf for this soil when the acutual unit weight is about 120pcf? It would make more sense to me to use...

In evaluating an existing reinforced concrete thrust block for a steam line, I am wondering if there is a way to determine a value for the magnitude of resistance on the thrust block from the earth behind it. The thrust block extends approximately 20' below grade in soil that has an allowable...

The cost of reinforce concrete (in place) is usually somewhere between $100/cy and $800/cy. This illustrates the fact that for a "rule of thumb" to be any good, the background for it's development needs to be known. That in turn means that most of the "rules of thumb" are...