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BigInch, I like the spec section you provided. Truly all inclusive, and adding it in the construction contract would certainly help both the engineer and owner. I believe (and agree) the construction contract is a better spot for this language than the consulting contract. Unfortunatly, I...

We're not interested in performing any future work with this client. I'm concerned that being soft at this stage will open us up for more claims. Our response basically denied acceptance to anything. If anyone is interested, I can post the meat of the letter, with names altered of course...

I'm trying to find either case studies or formal language that draws the line between a consulting engineers financial liability for non-negligent errors and omissions, and betterment of the project. Simple case: Say I have a conflicting callout on the plan and profile for a specific...

We're in the process of cleaning up our old project files and the question came up, "how long to we store these?". We already store many hundreds of boxes offsite. I'm wondering what is the legal requirement for storing project engineering records. I'm looking into the professional...

This is a preventative measure. If d/D > 1, the problem already exists. Sorry but your reponse is useless to me and my client. My point is/was what indicators are used by Districts to trigger upsizing of a pipeline due to capacity? The obvious one is surcharging (d/D > 1) I have heard...

Most design standards for new construction of sewer pipelines are somethign like d/D of 0.5 for 15-inch pipe and greater. But I'm interested in performance criteria of sewer pipelines that have been established for a while and perhaps are flowing at peak d/D of 0.85 but not surcharging. Just...

Thanks for the feedback. I'm beginning to think that the 5-inches is acceptable. Here's a little more info: The existing wastewater EQ basin is made of compacted earth with a visqueen liner. The existing liner is severely weathered and torn. The new shotcrete liner will provide longterm...

I'm not sure if this exactly applies to your question, but pressure sewers (forcemains) act just like water system pipes. Therefore a combination of blowoffs (low sections) and air vacs (high section) is typically used to exhaust air from the pipe.

I have a structural engineer claiming that the minimum thickness for shotcrete is 5-inches, which is 2-inches on either side of a 1-inch rebar mesh. The liner doesn't need to carry substantial loads, other than the weight of the water. 5-inches over the entire basin will be very costly. Has...