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Where would I find typical concrete column tolerances for bridge column tolerances? These will be about 6' tall, rectangular in shape. Rail application.

Has anyone used or know of builders using EZ Flow pipe for perimeter foundation drains for residential applications? Supposedly they are becoming more popular, but I don't know if they work or not. Looks like they might pop out of the ground where there isn't much cover on them in rainy conditions.

Looked at a PT Slab and there is a no 4 rebar tied around the edge of the slab behind the cable anchors. They told me they do that to keep the anchors from popping out of the slab but it seems like it would limit the cable pull to just where the anchors are, but maybe there isn't enough bond...

Anyone have a Hveem Stabilometer they want to get rid of? We are looking for one. Ele had to reverse engineer one and it is undergoing testing now but it'll still take a while till they start production. Thanks, Andy

Anybody have a good method to break down hard clay chunks into smaller pieces for proctor testing? We get buckets and buckets of clay chunks and spend a-lot of time breaking the clods up without damaging the particles by hand.

Can anyone help with finding a test method for neutral salts for cable/pipe corrosion testing?

I'm more of a geotech but have a question about a 4'x4' window in a 2 hour fire wall. 2 hour glass for an opening looks.like it is 2 1/2" thick. Is there any combinations of day 2 1-hour rates panes combined together, etc that meet IBC 2015?

Hi Folks, I am in need of getting a kneading compactor for soils only. Any recommendations as to which ones? All I can find is a kneading compactor from Cox and Sons or Instron for 60k+. Or if anyone knows of one up for sale let me know :) Thanks,

Does anyone know of a culvert calculation procedure from the American Concrete Pipe Association on how to correctly calculate flows through a culvert discharging from a pond? I have a regulator insisting that I use the manning's formula which doesn't take into consideration inlet losses...

I'm fairly new to TR-55 and I have a couple of questions as to what general practice is: 1) Do you usually use a short distance of sheet flow for an undeveloped, undisturbed area. The area has some short grass prairie, cactus, prairie, juniper and would call it arid rangeland essentially. I was...

Can you use the rational method if the overland sheet flow is greater than 500 feet for non-urban or 300 feet for urban areas?

Is there any specific standard out there used for determining the density of the sand used for sand cone testing?

How do you figure friction losses in PE pipe bends? I have a found a few references to fittings with friction coefficients for actual fittings such as a 90 degree bend with a fitting, but can't find anything about friction in bends. We are planning to curve the actual pipe and not use fittings...