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I have a client who is asking about two different sanitary sewer lining options for the initial lining of the pipe before it is cured in place with hot water/steam: 1. Lining by inserting a flexible tube inverted by water or air pressure 2. Lining by pulled-in-place flexible tube which is then...

Hire a life coach. Trust me, it works.

Ron - I don't know all of the details since this wasn't my project, but I do know that the base was existing asphalt and they did do a 3.25" grind of the existing pavement so that they could put back a new 3.25" pavement section. One of my first thoughts was that the grinding operations may...

A street that was just paved under my company's supervision seems to have some asphalt surface variations that make the ridability somewhat bumpy. Both the consultant(us) and the Village are questioning what the contractor could have done wrong to make this road feel so bumpy. The contractor...

You can find recent prices on Illinois DOT projects at this site: http://www.dot.state.il.us/desenv/payitems.html Your price will certainly vary based upon the size of the project and the size of your structures.

Here are some more pictures, you can see what's going on a little better here. Any feedback you all can provide would be great. Thanks http://i1.tinypic.com/s18cpz.jpg http://i1.tinypic.com/s18dh4.jpg http://i1.tinypic.com/s18dnq.jpg http://i1.tinypic.com/s18dtw.jpg

Here are some more pictures, you can see what's going on a little better here. Any feedback you all can provide would be great. Thanks http://i1.tinypic.com/s18cpz.jpg http://i1.tinypic.com/s18dh4.jpg http://i1.tinypic.com/s18dnq.jpg http://i1.tinypic.com/s18dtw.jpg

this was just posted at corrosion eng. as well, but thought some might like to see this: I uploaded the pictures at www.tinypic.com Search for images CopperCorrosion1 and CopperCorrosion2 and you'll see what I'm talking about in this case. http://tinypic.com/tags/?tag=CopperCorrosion1...

UncleSyd and others - I uploaded them at www.tinypic.com Search for images CopperCorrosion1 and CopperCorrosion2 and you'll see what I'm talking about in this case. http://tinypic.com/tags/?tag=CopperCorrosion1 http://tinypic.com/tags/?tag=CopperCorrosion2 Metengr is right, this is Lake...

This is Lake Michigan water. The corrosion appears to start right at the flare of the nut that screws into the shutoff valve. It looks like a typical 1" of 1 1/2" copper water house service. I do have pictures, but do not know how to post them here, and I do not have a website where I can...

This is Lake Michigan water. The corrosion appears to start right at the flare of the nut that screws into the shutoff valve. It looks like a typical 1" of 1 1/2" copper water house service. I do have pictures, but do not know how to post them here, and I do not have a website where I can...

Thanks Carl!

I've had a contractor friend contact our company about a project that his company completed 18 months ago that has had some problems arise recently. They completed a water main project and installed all water services. The Village has called him regarding leaks with these services, although...

I've had a contractor friend contact our company about a project that his company completed 18 months ago that has had some problems arise recently. They completed a water main project and installed all water services. The Village has called him regarding leaks with these services, although...

I just saw this post and agree - this looks like a foreign language to me. If anyone has a clue whether or not if we "normal" engineers qualify for another tax break, let us know.

For water main projects that I've designed I use both valve vaults and junction boxes. Valve vaults - round structures similar to manholes that allow access to a valve. The structure has openings for the water main to enter/exit the vault which are usually booted and then brick/mortared to...

Thank you for the spec reply cvg. Those all make sense for each application. However, I guess I was looking for a more detailed answer on what specifically you look for in a proof roll to determine the subgrade as being unacceptable? I know that you typically look for rutting, pumping...

I would follow the access board number that AC gave you, they have been very helpful towards me in the past when calling about new requirements. I agree with Maury that in the Chicago area they are typically installed anywhere that the sidewalk intersects the curb. However, I still have not...

Has anyone ever seen a spec or method detailing how a proper proof roll should be done? I was taught by watching some of my superiors and listening to their recommendations - so I guess I've always thought of proof rolls not being very scientific, but based almost solely on the engineers...

Does anyone know what the unit weight for polymerized asphalt is for calculating yields or plan quantities? Illinois DOT assumes 112 lb*in/square yard for all asphalt materials. I know that using the Gmb would produce a better result, but I don't have a specific mix design yet. This would...