Recent content by coloeng

I have used EPANET a few times, but it's been a few years. I doesn't have all the bells and whistles that some modeling software has, but it will get the job done.

Could they be vitreous clay pipes? I know in my younger years that some system used the clay pipes in those smaller diameters for sewer mains.

If you are allowed to work from home and don't have to report to the office, just work from home as you usually would. If your supervisor wants you to come to the office, let them know that you have a cold and don't want to infect others. I'm not sure what the issue is.

Yep, missed the part about the last truck being 1 yard short. Rereading the original post, not much of it makes sense.

If he used 2x6 forms, the actual thickness could be 5.5" instead of 5" which could account for the discrepancy. But, he should let us know that he values our input and at least respond.

Answer to Question 1: Yes, HDD can do a meandering path from one drill pit. A caveat is that the degree of meander is controlled by the diameter of the drill rod. Additionally, the more meanders the higher resistance to pull-back on the pipe and the larger machine that is required, which in turn...

You probably want to post this in the Electrical Engineering forum, not the Civil Engineering Forum.

Don't knock digging ditches and qa testing. That is how many engineers got started, me included. I have spent 23 years as a civil engineer working my way from a lowly design engineer to a District Engineer with a major domestic water provider. All of that started with digging ditches, installing...

OK, and what is your question?

You should definitely use restrained joint pipe for the HDD. Another option besides restrained bells in each joint is fusible C900. It's probably not a big deal in Louisiana, but in areas where you might be drilling through cobbly soil, the collars/bells on jointed pipe can increase the...

Do it like they used to do the storm cellars in the mid-west for tornados. A set of concrete stairs going down to the door with a hatch on top to keep rain/snow out.

It could be the number of wires in the duct and its diameter.

I worked for a system that had a lot of PCCP. It was installed in the mid 1960s and started to really have a lot of breaks in the 90s to 2000s. The main cause was determined to be the high chloride content of the soil attacking the concrete and allowing the reinforcing to corrode and fail.

We are working on the contract documents for a small warehouse and plan on using infrared tube heaters. Just wondering if anyone has a good specification that they would be willing to share. Thanks

Yes and yes. Because the first 4-inch base course was already compacted when you placed the 2-inch base course the top 2-inch base might not bind to the bottom base course. That is probably why he wants the bottom ripped and then place the top course. As far as compaction, there is always the...