GEO-HYDRO TECH NOTES

Please take a moment to peruse our technical notes. You'll find valuable technical information relating to our services.

Testing Agency Qualifications

October 7, 2013

How many times have you seen project specifications call for the testing agency to meet ASTM E329? Plenty. Long ago somebody put it in a set of standard specs. Those specifications multiplied, and it became one of those items that just carry on year after year, and nobody really pays much attention to it. Since…

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Hot Weather Concreting Guidelines

October 6, 2013

During hot summer months all projects benefit by implementing hot weather concrete practices. Appropriate hot weather concreting practices are described in ACI 305R. Most project specifications that address hot weather concreting practices only mention that concrete should be placed in accordance with ACI 305, or mention a maximum concrete placement temperature of 90 degrees Fahrenheit.…

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Cold Weather Concreting Guidelines

October 5, 2013

Cold weather can have some serious, and irreversible, adverse effects on concrete: Inadequate strength gain associated with low concrete temperature Delayed initial set Fluctuations in workability Concrete damage due to freezing at early ages And cold weather for concrete is not really all that cold. Problems can occur at temperatures as warm as 50 F.…

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NPDES & Construction Sites

October 4, 2013

Confusion reigns supreme as the construction industry grapples with new Georgia EPD regulations governing storm water discharges from construction sites. EPD has a general permit for 5- to 250-acre sites, which owners and developers can take advantage of, as long as the requirements of the permit are met. First and foremost, a Notice of Intent…

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If I Had a Hammer…

October 3, 2013

Automatic standard penetrometer hammers are becoming more common in the North Georgia area. These hammers undoubtedly provide more consistent test results than the older, cathead and rope manual hammers, and in time should become the norm for standard penetration testing. However, the manual hammers have proven to be reliable when used by properly trained and…

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Seismic Refraction Survey

October 2, 2013

Some people love it, some hate it, most barely understand it. Seismic refraction survey is a method that is often used to determine excavation characteristics. You’ll notice that the term “rock” was omitted in the previous sentence. That’s because seismic refraction really doesn’t know the difference between materials like soil, water, rock, plastic, or concrete.…

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Breaking New Ground in North Carolina

January 9, 2011

Geo-Hydro is excited to announce the opening of our new office in Greensboro, North Carolina. The new office will allow us to extend our services to the North Carolina region. With the opening of this office, Geo-Hydro will now have five locations. Heading the new Greensboro location will be Chris Busch. Chris, a native of…

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Structural System Costs and IBC 2000

October 1, 2002

Under the currently-adopted International Building Code (2000), seismic design requirements for Georgia have become more stringent, and consequently, in most cases, structures will be more expensive. The change is due to the adoption of Maximum Considered Earthquake (MCE) maps having a longer return period. The previous code (Standard Building Code 1994) used MCE maps having…

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