Standard Penetration Test (SPT)

Standard Penetration Test (SPT) 


Soil Sampling

Macro Core

Macro-Core (MC) tooling is a solid barrel that is pushed into the subsurface for collecting continuous core samples of unconsolidated materials at depth. The Macro-Core soil samples are collected in a Teflon, PVC, or PETG liner of five feet (5-ft.) lengths and can be obtained by splitting the liner or capped to preserve the samples for future analysis.

Advantages

• No cuttings eliminates handling, containing, storing and disposing of potentially hazardous and contaminated cuttings.

• Minimal disturbance to the ground surface. Only a small diameter hole is created

• Minimal physical and chemical disturbance assures a high degree of sample integrity and data quality

• Both probing and sampling is fast

Undisturbed soil samples can be obtained by splitting the liner

Dual Tube

Dual Tube Sampling Systems are efficient methods of collecting continuous soil cores with the added benefit of a cased hole. Dual tube sampling uses two sets of probe rods to collect continuous soil cores. One set of rods is driven into the ground as an outer casing. These rods receive the driving force from the hammer and provide a sealed hole from which soil samples may be recovered without the threat of cross contamination. The second, smaller set of rods are placed inside the outer casing. The smaller rods hold a sample liner in place as the outer casing is driven one sampling interval. The small rods are then retracted to retrieve the filled liner.

Advantages

• Soil sampling inside of a cased hole

• Set monitoring wells through outer casing after collecting soil cores

• Sample from a discrete depth

• Multiple interval sampling

• Excellent performance in harsh probing conditions

RS60

The RS60 sampler retrieves a soil core nearly 2.5 in. (60mm) in diameter and is widely used where large soil cores are needed. A 3.25 in. probe rod serves as the sampler sheath. When “open hole” continuous soil sampling is hindered by slough or probe hole cave in, the RS60 sampler can be used with a closed piston option. This option simply utilizes a center probe rod which holds a piston point inside the cutting shoe preventing any soil from entering the sampler until the piston rod is removed.

SPT hammer

SPT hammer types

SPT hammer efficiency

SPT hammer weight

SPT hammer anvil

SPT hammer calibration

SPT hammer efficiency factors

SPT hammer energy measurements

spt hammer types

automatic spt hammer

spt hammer weight

spt hammer calibration

spt n values

spt energy

spt correction

automatic hammer

Standard Penetration Test

SPT Hammer Calibration

Spt Hammer, Spt Hammer Suppliers and Manufacturers

SPT Hammer Calibration

SPT Automatic Hammmer

Drilling World

Automatic SPT Hammer

SPT: Standard Penetration Test Energy Calibration

Standard penetration test

CME Automatic Hammer Operations Bulletin DSO-99-03

Evaluation of SPT energy for Donut and Safety hammers

SPT Hammer Energy Ratio versus Drop Height

SPT Energy Measurements: Manual vs. Automatic Hammer

Standard Penetration Test (SPT) Correction

Auto Standard Penetration Test (SPT) Hammers

SPT Automatic Drop Hammer: Environmental, Geophysical

Auto Hammer

Energy Efficiency and Rod Length Effect in SPT Drilling

Evaluation of SPT Hammer Energy Variability

NOTES on the STANDARD PENETRATION TEST

UT100 and SPT Hammers

Drilling Supplies

Spt Automatic Trip Hammer, Spt Tools

standard penetration test, SPT

Standard Penetration Testing Tools

Geoprobe Systems

Automatic Spt Hammer

Hydraulic Spt Hammer, Hydraulic Spt Hammer

Calibration

Geotechnical Drilling

Automatic SPT Hammer,SPT Hammer Types manufacturer

Drilling Services,SPT Calibrations

NCDOT SPT HAMMER ENERGY MEASUREMENT

Hydraulic Spt Hammer, Hydraulic Spt Hammer

SPT Hammer Energy Ratio versus Drop Height

SPT hammer, high quality Manufacturers,Suppliers

SPT Automatic Hammer Efficiency Revisited

SPT Hammer, SPT Automatic Trip Hammer

SPT AUTO TRIP HAMMER - KUVAWALA CORE DRILL

Standard Test Method for Standard Penetration Test (SPT soil sampling)

Soil Sampling Tools - Drilling World

SPT Hammer Energy Ratio versus Drop Height

Spt Hammer - Spt Hammer Manufacturers, Suppliers

1.8m - 2.6m Automatic SPT Hammer Standard Penetration

Effect of SPT Hammer Energy Efficiency in the Bearing

Spt Hammer Complete

Evaluation of SPT energy for Donut and Safety hammers

GRL Services SPT Hammer Calibration

DH66 Automatic Drop Hammer

Automatic SPT Hammer,Soil testing engineering

Geotechnical Drilling

Mobile Drill Tooling Catalog UPDATED 2015 Reduced

SPT Hammer Energy Analyser

DH66 Automatic Drop Hammer

Spt Hammer Exporters, Spt Hammer Selling Leads

China SPT Hammer - China Spt Hammer, Drilling Tools

EVALUATION OF THE CONE PENETROMETER TEST FOR SPT .

China Soil Testing Spt Automatic Trip Hammer Complete

SPT Hammer Energy Measurement

SPT Hammer Energy Measurements

STANDARD PENETRATION TEST

Subsurface Exploration Using the Standard Penetration Test and the Cone Penetrometer Test

Subsurface Exploration Using the Standard Penetration Test

Site Exploration, Site Characterization, Subsurface Exploration, Drilling, Standard Penetration Test, Cone Penetrometer

The Standard Penetration Test (SPT) and Cone Penetrometer Test (CPT) have become industry standards for subsurface geotechnical investigations using small diameter (<8-in. [20-cm]) borings and soundings. Both procedures have evolved over a period of 100 and 70 years, respectively, and have been adopted as ASTM standards. Each procedure has certain advantages over the other, but both can elicit incorrect data under particular subsurface conditions that are often overlooked, depending on the experience of field personnel operating or logging the tests. This paper seeks to explain the operative assumptions employed in both procedures, highlight the various corrections that are commonly employed, and warn the reader of common errors in interpretation.

The article concludes by stating that, under most conditions, the joint employment of SPT and CPT together has the greatest potential for characterizing sites correctly.

ASTM D1586 - 11

Standard Test Method for Standard Penetration Test (SPT) and Split-Barrel Sampling of Soils

For more information please contact:

ROSCHEN INC.

ROSCHEN GROUP LIMITED

ROSCHEN HOLDINGS LIMITED

Skype: ROSCHEN.TOOL , ROSCHEN_GROUP

WeChat: +86-137 6419 5009 ; +86-135 8585 5390

WhatsApp: +86-137 6419 5009 ; +86-135 8585 5390

Email: roschen@roschen.com ; roschen@roschen.net