I suggest visiting http://www.usgsquads.com/mapfinder.html
They provide a google earth layer that shows topo quads at multiple scales, allow printing, exporting, etc. And as far as I've used it it has been free.http://www.usgsquads.com/mapfinder.html
What we do in our lab when we need to prepare a sample to 95% of the max. dry density (mostly for triaxial samples) is to calculate the mass of the soil needed per inch of the mold when compacted to 95%. Then place that amount of soil in the mold and compact by pressing on the soil with a...
I have been tasked with preparing a pavement redesign for a residential development. The initial pavement design had 4 inches of bituminous base course of which I want to see if we can change to 2 or 3 inches and 2.5 inches of surface course. My question is in preparing my CBR samples my...
jdon has got it right. The amount of data available for free from governemnt agencies is growing quickly. My company has someone soley dedicated to crawling state, county, city websites and downloading anything she thinks we could use. ie. USGS seimic classification data. She also is...