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  • Users: PEinc
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  1. PEinc

    US Dept. of Labor (OSHA) PDF reports of construction accident incidents

    See selected PDF incident reports for the past several years, including the Florida (FIU) Pedestrian Bridge collapse. https://www.osha.gov/construction/engineering www.PeirceEngineering.com
  2. PEinc

    AASHTO LRFD Design for Sheet Pile Cofferdams with Water Pressure (WA)

    Has anyone designed sheet pile cofferdams per AASHTO using LRFD where the major lateral load is water pressure? The load factor for water pressure is 1.0 whereas the load factor for earth pressure is 1.35 to 1.5. If the major load on the sheet piling is water pressure, the sheeting and...
  3. PEinc

    Weldability test for early to mid-1920's steel

    thread725-167138 unclesyd, In the referenced thread, you stated, "A quick test to see if it is readily weldable is to make a one side fillet weld,7018 electrode, a 1/4" 2"x2" tab in an inconspicuous place and try to forcibly remove it. Try first in the hard direction, hitting one time on the...
  4. PEinc

    Let's get this party started!

    Hello? Hello? Anybody here? What do we do now? www.PeirceEngineering.com
  5. PEinc

    Soil properties for BioBio Riverbed, Concepcion, Chile?

    I am involved in some preliminary, pile foundation design in the BioBio River in Concepcion, Chile. At this time, there has not been a geotechnical investigation or report. This will be done as soon as (if?) the project is a go. Does anyone have any soils and seismic information for the river...
  6. PEinc

    Park Bench Design Live Load?

    I can't seem to find anything on minimum design loads for fixed, wood slat, park benches. Does anyone know if there is a minimum uniform load or minimum concentrated load for bench design? I searched these forums, the internet, ASCE 7-98, and IBC with no success so far. Design load...
  7. PEinc

    Ralph B. Peck 1912-2008

    In case some of you haven't seen this in the Geotechnical Engineering Other Topics Forum: Ralph B. Peck 1912 – 2008 Ralph B. Peck, Professor Emeritus of Foundation Engineering at the University of Illinois at Urbana-Champaign died of congestive heart failure on February 18, 2008, at his home...
  8. PEinc

    Ralph B. Peck 1912-2008

    Ralph B. Peck 1912 – 2008 Ralph B. Peck, Professor Emeritus of Foundation Engineering at the University of Illinois at Urbana-Champaign died of congestive heart failure on February 18, 2008, at his home in Albuquerque, New Mexico. He was born in Winnipeg, Canada, to his American parents...
  9. PEinc

    Closed End Pipe Piles w/ Concrete Fill @ Top End Only

    My client is driving 100' long, closed end, pipe piles, approx. 24" diameter for a wharf. The plans call for the upper portion (about 20') of the pile to be concreted. Does anyone have any good reasons why or why shou;dn't the pile should be totally dewatered inside and below the concrete...
  10. PEinc

    Problem Reinstalling Ver. 11

    I bought a new computer. I installed MathCad 11 on the new computer and had to do a manual activation. The program now runs but when I try to open a data file, the program does not look for a .mcd file. Instead, the program looks for a "FeatureSaveAsFilters" file. I have none and can't find...
  11. PEinc

    Invitation to Group

    Not sure who invited me or even why, but thank you. I appreciate it and hope I can contribute. Where do I send my dues?
  12. PEinc

    Pile Hammer Size / Driving Criteria

    I was taught to size a pile driving hammer so that the pile reaches the desired capacity at approximately 10 to 12 blows per inch. (I know that some agencies require all piles to be driven to refusal at 20 blows per inch). Lately, it seems that people are driving piles to capacity with larger...
  13. PEinc

    Driven Pipe Pile Splice Weld

    Any thoughts, comments, words of wisdom, warnings, etc. about using a B-U4b weld to splice a driven pipe pile where R = 0, f = 0, and it is not possible to get access for back gouging or making the square weld?
  14. PEinc

    ASTM A252 Grade 3 Welding Process

    Can anyone give me a reference for or tell me the welding process required for field splicing ASTM A252 Grade 3 steel pipe? Are there any special welder qualifications required? Any special welding electrode required? Any pre-heat, etc.?
  15. PEinc

    Setting long reinforcing cage for drilled shaft

    Can anyone guide me to a source of information or make recommendations on the handling of long, heavy, double, reinforcing cages for drilled shafts? The cages are about 130 feet long and weigh about 700 pounds per foot. The cages have double circular rings of vertical #18 bars with #7 spirals...
  16. PEinc

    Open End Pipe Pile Plug Length

    Does anyone have any information on or a reference for the minimum length of soil plug in order for the entire pile tip area (including the plug) to be used in calculating the point bearing capacity of the pipe pile? The open end pipe pile will be driven through soft organic silt, through a...

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