thread822-236954
I was searching for this and found an old thread here. Due to work circumstances I haven't been on this site for years, but my work situation changed. Anyway, I found this old thread in a Google search!
My question is this. I've run into the 0.45 power curve in several...
What has anybody hears about this? When will it end or at least come back down? I understand the requirement for low sulfur fuel is at least partly to blame.
We have started using it, in the SW US, but are having problems with longitudinal cracking along the wheel path. I'm thinking that maybe the lower temperature limit is not low enough, or the deviation from average low is not compensated for adequately. In any case it appears that the oil is...
According to a new study by the Corps of Engineers, dredging the MRGO is a waste of money...
http://enr.ecnext.com/free-scripts/comsite2.pl?page=enr_document&article=neenar061225a
I understand Texas has just upped its freeway speed limit to 80 mph, which I think is overdue. The idea that maximum speed limits are the same as they were 40 years ago seems ludicrous, given the amount of research and engineering put into safety enhancements since then. It's actually kind of...
I seem to recall a website that had a web based version of HY8. I can't find it now. Does anybody know where it is, or if there's a web-based version of a newer program that does the same thing?
We're working on a cost adjustment procedure for contractors bidding our jobs, and my question is how much do the polymers vary in price compared with the oil price? For example, if basic oil is $350 per ton and PG 76-28 is $500 per ton; then say basic oil (per Poten) goes to $400 per ton, how...
We have a proposal in to repair a design mistake which allows too much deflection in a slab bridge, using carbon fiber layers underneath. Has anyone ever heard of that?
Hopefully I can get some input here. I'm wondering what the accepted minimum length of a pavement section change is. For example, the first half of a contract is in a valley with low R-Value subgrade and the second half is in the mountains with a more competent subgrade. Rather than design...
We have a large quantity of gypsum that needs to be removed for a roadway. Due to velocities over 16,000 fps, it will be classified as rock exc. However, it seems gypsum would be easily rippable. Has anyone had any experience with that?
I'm trying to find information on reflective cracking control with Superpave pavements. I have heard that Superpave, because of its more consistent properties while cold and improved properties in tension, reduces the rate of reflective cracking but can't find anything on it. Does anybody know...
We have a contractor who is claiming rain delays for about half of the last two years. Some months the rain was in fact above the second standard deviation in terms of monthly quantity averaged over the last 20 years. However, they are claiming rain for months just barely over the average as...
We're (a DOT) sending out an RFP for Claims Consulting services. Is there a list somewhere of those types of consultants? Does anyone have one they are happy with that we can send the RFP to?
