Recent content by baileyhewes

I assume if we have to use a nomograph, like for headwater in the FHWA culvert design reference or concrete slab thickness in the AASHTO pavement design guide, they will provide the nomograph in the test booklet? We aren't allowed to write in our reference material during the test, but you...

You can use the 70% column if the population is less than 10,000 OR the 85th percentile/posted speed exceeds 40mph. I haven't read the question, but I'm guessing the speed is more than 40 if they used the 70% column.

Thanks, I wonder where OP got 53 from.

Cut score is 53/80? I thought we needed 70%.

Alternative to that equation which isn't very intuitive, you can just remember optimum density is half of jam density. And optimum speed*optimum density = capacity. So just divide your jam density by 2 and multiply by 60. Same answer, its just easy to remember something if it makes sense in my...

Thanks for pointing out that we only need to worry about the first 9 chapters! It definitely says volume 1 on the NCEES reference list, and volume one is just chapters 1-9. That's a lot less correcting to do, and 2 less books for me to bring.

There's 23 pages of this, and yes I spelled errata wrong.

Anyone notice the 2012 eratta AASHTO put out for the highway safety manual? There's a ton of equations in there that are wrong. I'm wondering if it is worth my time to go through and correct them all with a pen. That would be pretty low of NCEES to require one of those equations when using the...