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  1. Geotech_Pavement

    Cantilever Caisson wall Embedment Depth Based on Deflection and Moment Diagrams

    Hi Everyone I need help to decide the embedment of caissons retaining a 17 ft wall. These 2.5 ft diameter caissons spaced 8ft on center. I have attached the schematic showing the wall and the deflection and moment diagrams with depth. The upper 6 ft consists of highly expansive clay and I am...
  2. Geotech_Pavement

    Best Approach to Model Displacement of Caisson with Stepped Retaining Walls

    Hi everyone, I’m working on evaluating the displacement of the top of a caisson foundation that is part of a permanent shoring system designed by a structural engineer using Enercalc software. As the geotechnical engineer, our role was to provide the structural engineer with equivalent active...
  3. Geotech_Pavement

    Asphalt Pavement Reconstruction Options

    Here is information on the current road condition: 0.6 mile arterial road (north bound only) with PCI of 35. The road is 32 years old. Options are full reconstruction and full depth reclamation Field investigation has not been performed yet. Here is what I was thinking to do for...
  4. Geotech_Pavement

    Landfill Liner Slope Stability (Static & Seismic)

    Is anyone familiar with adhesion and interface friction shear strength properties obtained from interface shear tests (large scale sandwich tests using soils and geosynthetics) ? We use these interface shear strength properties for landfill liner-soil slope stability. I want to know if it is...
  5. Geotech_Pavement

    Geo-Structural Shoring Design

    Hi. Is there anyone here who does or has done before both geotechnical (investigation report, recommendations, pressure distribution, passive resistance, etc)and the structural aspects (draw the force diagram and design the structural member)for shoring design ? I am a geotechnical engineer...
  6. Geotech_Pavement

    Increasing in Bearing Capacity with Depth and Width (Cookies Cutter Geotech Report Recommendations)

    Hello All I am trying to become more proficient in writing geotechnical reports and providing recommendations but sometimes get frustrated by things that just don't make logical sense in the industry. I am from Southern California and all reports I have seen (from other companies) have a...
  7. Geotech_Pavement

    Construction Field Inspection Data Reporting Software

    Hi. Hope everyone is doing well. I wanted to see what the materials testing/geotechnical companies that do a large amount of construction field inspections use for reporting data (pictures, field dailies, test data, etc.) For dailies we ask the inspectors/technicians to fill out an electronic...
  8. Geotech_Pavement

    Tiltmeter Equipment

    I need recommendations for tiltmeter brand to purchase or rent. It looks like all the tiltmeters are now wireless with cloud capabilities for data transfer. I know the major brands are DGSI, GEOKON, RST. It seems the major rental company is Geo-Instruments. What is your thought on other lesser...
  9. Geotech_Pavement

    Timesheet/Time Tracking and Invoice Software

    We are a geotechnical/civil/construction inspections company . We have about 20 employees. It is 8 engineers and 12 field lab and field personnel. The one's in the lab/field do not do project management and only need simple time sheet entry and expense sheet entry. We have about 6 project...
  10. Geotech_Pavement

    Who is Responsible for Damage to Utilities during Geotechnical Drilling ?

    Hello We are a geotechnical firm in southern california (orange county) and as you know many times we work for an A/E firm that hires us. I have a question regarding the standard procedures for utility clearance for geotechnical and environmental drilling. We usually place the two statement...
  11. Geotech_Pavement

    Re-use of existing Base for New Pavement Section

    We have designed a new (re-construction) flexible pavement section (AC over AB) for an existing parking lot and now the project is going for bidding. The existing section is 4" AC over 4" AB. The bidding contractors want to know if they can re-use the existing AB and place new AC over it. Is...
  12. Geotech_Pavement

    Resilient Modulus Testing (AASHTO T 307-99) for Subgrade of Pavements

    Hello Everyone I want know which states/transportation agencies/counties/cities require the use of Resilent Modulus Lab testing of subgrade soils for pavement design. Caltrans recently adopted the mechanistic-emperical method which requires use of the resilient modulus parameter. Caltrans is...

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