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A trend I have noticed in home construction for shoring excavations between 10 to 12 feet deep is to drill caisson holes (10" to 12" diameter) 2 to 3 feet apart, reinforce the holes with 4 -#5 bars, fill the holes with concrete then begin excavation after a seven day cure. Typically the...

EPR, Thanks for the heads up on Civiltech and Ensoft. It seems like Lpile is the go to product for piles but I'm looking for a more everyday type software to generate data for residential and light commercial reports. If you don't mind, what do you like and don't like about Geopro...

I am thinking of buying a geotechnical software suite. I don't use some of the programs in the GEOPRO suite but some may come in handy. Has anyone used the product and what do you think? Thanks, Kevin

As an engineer with an AB Chance installer, use a ratio of 1:10 torque to load (ie. 10,000 ft-lbs of torque equates to an ultimate capacity of 100 kips tension or compression, working load is half of ultimate so 50 kip for design). Typically design loads for limited access areas are 25 kip...

How do you define restrained vs. unrestrained? If restrained means reinforced with a #5 steel grid with approximate 18 inches between bars (horizontal and vertical),foundation walls approximately 8 foot into the soil 8 inches thick and the foundations supported by approximate 8 to 10 inch...

I have reread the reports and they are actually talking about using the clay removed from the excavation and in some cases on-site claystone recompacted to 90%. There is no recommendation for use of granular fill, however adequate surface drainage is specified. These reports are from several...

IS it possible these engineers are using the percent of recommended compaction as the unit bulk weight as opposed to the lab evaluated data or possibly even the dry density unit weight? Sounds strange to me but their values come much closer.

fndn, Thanks for the info. What you have said makes perfect sense and seems to fall in line with the calcs I have been coming up with. However, many ( almost all) of the soils reports I have seen are coming up with eq fluid pressures of 50 to 55 pcf. Any guess as to why? The soil parameters...

Hello All, I am wondering about typical ranges of equivalent fluid pressures for stiff clays. I have viewed many reports on similar soils and can't seem to calc the values the majority seem to be finding. I am looking for typical values. Using the Rankine calc, I seem to get values that...