How to Properly Set Up the SPT: A Step-by-Step Field Guide | EP.10

Описание: The SPT starts before the first hammer blow. 📝 Master the critical setup checklist for accurate, reliable N-values.

We have the right tools and a clean borehole—now it's time for the most critical pre-test procedure. This lesson is the final "pre-flight checklist" you must perform before you begin driving the sampler. Getting these steps wrong will make your N-value meaningless.

Dr. Manafi provides a detailed, step-by-step walkthrough of the borehole and sampler setup sequence. You will learn the correct—and gentle—way to lower the sampler, why you must never drop it, and how to verify that the bottom of your hole is stable and clean. We cover the final equipment assembly and the proper method for marking the drill rods to ensure accurate blow count measurements.

In this video, you will learn:
• ✅ The Correct Lowering Technique: Why you must gently lower the sampler and never let it drop onto the soil.
• ✅ Critical Depth Checks: How to record and compare the "cleanout depth" and "sampling start depth" to ensure borehole stability.
• ✅ Final Assembly: The proper procedure for connecting the anvil and hammer and resting the full weight on the borehole bottom.
• ✅ Marking the Rods: How to mark the drill rods in three 0.15 m increments for precise visual tracking of the N-value.

Mastering this setup procedure is the only way to guarantee that your test begins on undisturbed soil, ensuring the integrity and reliability of your SPT data.

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ABOUT YOUR INSTRUCTOR:
This course is led by Dr. Manafi (PhD, P.Eng., M.Phil., M.Sc.), an experienced geotechnical engineering consultant and educator. His courses are designed to bridge the gap between academic theory and real-world field practice.

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DISCLAIMER: The information provided in this video is for educational purposes only and is not a substitute for professional, site-specific engineering advice or design.

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