Ams pocket penetrometer soil compressive strength tester. Bearing capacity isnt a measurable soil property, it will vary with footing width, soil unit weight, and soil strength with depth. Soil pocket penetrometer stainless steel, lightweight. It measures the unconfined compressive strength of cohesive soils. Penetrometers are useful for penetration tests on lubricating greases, petroleum waxes, and bitumens and for performing consistency tests on a wide range of food products, cosmetics, pastes, and other solid to semisolid products. Pocket penetrometer, used to determine consistency and approximate unconfined compressive strength of soils. Comparison of basic laboratory test results with more. Recommended when testing extremely low strength cohesive soils. But i would like the supplier to assist with the 1adapter used for measurement in weak soils. Correlation of texas cone penetrometer test values and. The depth of the beginning of the compacted layer and the depth when leaving the compacted layer should be noted. It has a directreading scalein tonssq ft, or kgsq cm, which corresponds to equivalent unconfined.
Information includes how to assemble the instrument, conduct a test, and determine test frequency and location. Figure courtesy of dickey john a penetrometer consists of a 30degree circular stainless steel cone with a driving shaft and a pressure gauge figures 1a and 1b. The soil penetrometer should be used to check if you have a compaction layer. Instruction the red ring on the barrel of the penetrometer is designed to maintain the test reading on the scale for easy reading. Capability of pocket penetrometer to evaluate unconfined. This test method is used to evaluate consistency and approximate unconfined compressive strength of soils by means of using a pocket penetrometer. The ams pocket penetrometer provides accurate measurements of the compressive soil strength. S170 170b pocket penetrometer instruction manual pn s212m page 1 of 2 instructions for use 1.
Pocket penetrometers, soil testing equipment, controls. The cone penetration or cone penetrometer test cpt is a method used to determine the geotechnical engineering properties of soils and delineating soil stratigraphy. Classification of soils for excavations method number. It is a spring operated device used to measure compressive strength by pushing a 0. Use soil penetrometers to measure compressive soil strength or. Geotest e280 pocket penetrometer modified for hot cell use. Divide by 16 to obtain correct unconfined compressive strength when the reading in tons per square foot or kilograms per square centimetre is on the lowload side. For saturated cohesive soils, it is important that readings be taken in fresh samples or cut surfaces. The hand penetrometer is used to determine the approximate unconfined strength of cohesive soils.
The applicable regulation is 29 cfr part 1926, subpart p. To start test, push indicating ring against the body so that. Van huyssteen viticultural and oenlllogical research institute, private bag x5026, 7600 stellenbosch, republic of south africa. Please sign in to your account to see your pricing, which may be different from the price displayed. Unconfined compressive strength represents an important parameter for soil investigation report test results because the values of cohesion and allowable bearing capacity can directly obtained from the relevant test especially if the clayey soil. Pocket penetrometer per una rapida determinazione dolla resistenza al taglio dei terreni di fondazione in condizioni non drenate. Osha lists the device in its 2014 classification of soils for excavations as a piece of equipment required for manual testing.
The soil pocket penetrometer was delivered sealed and working perfectly. A cone penetration test a penetrometer cone a cone penetration test is used to determine geotechnical properties of soils. Ams pocket penetrometer, manufacturers warranty length 1. Hm500 gilson soil pocket penetrometer also called a hand penetrometer is constructed of stainless steel. Field cbr test set and conversion frame for laboratory use. Pdf unconfined compressive strength represents an important parameter for soil investigation report test results because the values of. Lightweight direct reading penetrometer gives instant information for classification of cohesive soils on site or in the lab. Fyi, a pocket penetrometer is a tool for estimating the unconfined copressive strength of a clayey soil. Soil bearing capacity test geotechnical engineering. This standard will be used by field and laboratory. Approximating the shear strength of cohesive soils by the handheld vane shear device astm d8121 duration. Based on this history it has also been called the dutch cone test.
Holding the sleve of the penetrometer, slide the indicator ring towards the sleeve until the ring touches it. When pushing the instrument into the ground, the pin encounters a force of the ground. Uts0075 pocket dial penetrometer is used for evaluating the angle of internal friction j of sandy soils and the cohesion c 2 in clay soils. Most penetrometers available today contain units of tonsft 2 or kgcm 2, and the compressive strength is read directly from the gauge. Interpretation and use of penetrometer data to describe soil compaction in vineyards. Adapter foot is recommended when testing extremely low strength cohesive soils. How to determine soil compressive strength with a pocket.
The pocket penetrometer is specifically used to determine the penetration resistance of top layers measuring depth 5 mm and of samples in the field or in the laboratory. How to use the pocket penetrometer, for soil testing 1. Strength measurements of archive k basin sludge using a. Showing results 12 of 2 matching withdrawn standards under the jurisdiction of d18. The undrained shear strength data include results of pocket penetrometer, unconfined compression test, and uu tests. A penetrometer, or soil compaction tester, has a graded shaft and separate reading scales for each tip. The author wishes to express his thanks and appreciation to miss a.
The penetrometer indicates consistency, shear strength, and approximate unconfined shear strength. Correlating unconfined comptessrvo strength the anole ot internal friction the cohesion c civilab geo toot or 0 315 correlating unconfined compressive strenghts of soils range 014 kgscm or tonssft penetrome r st m 5. It is a simple, lightweight, handheld device made for instant estimates of unconfined compressive strength of cohesive soils. A penetrometer is any device forced into the soil to measure resistance to vertical penetration davidson, 1965. Looking for ams pocket penetrometer, manufacturers warranty length 1 yr. Cpt test consists in a rod attachment into the ground in a predrilling hole with piling speed of about 20 mm s. The pocket penetrometer is now required by osha on most excavation jobs and its use is mandated in the osha manual titled construction standards for excavation. The instrument should not be used for obtaining foundation design data. Pocket penetrometer, manufacturers warranty length 1 yr.
The pocket penetrometer is designed as a lightweight instrument for use by field personnel to check visual classification of soils. The earliest soil penetrometers were fists, thumbs, fingernails, pointed sticks, and metal rods. The cone penetration test has become internationally one of the most widely used and accepted test methods for. Pocket penetrometer geotechnical sampling and testing. Pocket penetrometer easy to read, designed for rugged use by nontechnical field personnel to assess need for shoring of excavation sidewalls. The pocket penetrometer measures the compressive strength of the soil. If you mean pocket penetrometer or pocket vane shear test, there are lots of relationships which yield the soil shear strength based on the results of these tests. Hold the shaft at right angles to the concrete mortar surface.
Then force the shaft onto the mortar to a depth of one inch inches are. The standardized conepenetrometer test cpt involves pushing a 1. Use is required by osha for trenching and excavation inspection. The second wet weight optional for selected tests after conducting the unconfined compression test sample failure was measured. How can we claculate soil bearing capacity from portable. This instrument is used to estimate approximate unconfined compressive strength and the estimation to shear strength of soil cohesive soils can also be classified in terms of consistency using this penetrometer. Interpretation and use of penetrometer data to describe. Using 500 lb increment, take the lowest reading and round down. Although it does not replace laboratory unconfined compressive strength test systems for the determination of. The pocket penetrometer was originally developed for use by field personnel in checking visual classification of soils.
Slowly insert piston until engraved mark is level with soil. Wk27337 new test method for pocket penetrometer test. Pocket soil penetrometer, identification of soils presented by texas unconfined. The pocket penetrometer can quickly verify whether excavation side walls require shoring, based on osha cohesive soils classifications. The texas cone penetrometer tcp is a sounding test similar to the standard penetration test spt and cone penetration test cpt used to determine the in situ soil parameters for foundation design. Pocket penetrometer field measurement equipment eijkelkamp. Choose your test location with care to avoid gravel or other particles that would influence reading. Heavy duty pocket penetrometer, three interchangeable tips. Pocket dial penetrometer utest material testing equipment. A compacted layer will be shown by the gauge indicator increasing upscale and then moving back down scale after passing through the compacted layer.
Soil pocket penetrometer is made of corrosionresistant stainless steel and performs well in field or laboratory testing. A pocket penetrometer is a primative instrument that is. In addition, there are sections on dcp maintenance, correlation of data with pavement design parameters and a description of how construction operations are directly related to subgrade stability. This 614in unit is springoperated, and it is measures strength in tonssq. Pocket penetrometer penetrometer soils soils forney lp. Diagnosing soil compaction using a penetrometer soil. Earth material that is excavated must be properly sloped or supported for construction and safety purposes.
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