Vane shear test is a useful method of measuring the shear strength. Graduates shall demonstrate sound knowledge in analysis, design, laboratory investigations and construction aspects of civil engineering infrastructure, along with good foundation in mathematics, basic sciences and. Cive 353 geotechnical engineering i instructions for preparing laboratory reports 2006 page 1 of 2 department of civil engineering this guide sets expectation levels for the laboratory reports. Feb 18, 2016 in the direct shear test, the shear stresses and displacements are nonuniformly distributed within the soil specimen. Procedure for performing direct shear and sliding friction testing using a portable direct shear device introduction this procedure is under the jurisdiction of the materials engineering and research laboratory, code 8668180, technical service center, denver, colorado.
Manual control for both vertical and horizontal motion of the sheartrac ii load frame is achieved with keypads and easytouse menus. Laboratory vane shear test is 2720part 301980 reaffirmed2007 theory. Procedure for performing direct shear and sliding friction testing. Diy videos welcome to lowesvideo recommended for you. Large direct shear machines test the shear resistance between a geosynthetic or geosynthetic clay liner gcl and the contact surface of a large soil sample according to test methods in astm d5321 and astm d6243. Wall framing basics how to frame a wall and door duration. Department of civil engineering geotechnical engineering lab. An experimental and numerical investigations of the direct shear test have been performed under constant vertical stress q const and constant sample volume h const. Pdf soil mechanics ii lab manual jayashree sengupta. Now in its ninth edition, soil mechanics laboratory manual covers the essential properties of soils and their behavior under stress and strain and provides clear, stepbystep explanations for conducting typical soil tests. Why does internal angle of friction vary an annular ring figure 4, subjected to a constant normal stress, is confined laterally, and ultimately caused to rapture on a plane of relative motion.
Measurement of shear strength direct shear shear box test triaxial tests including ucs, uu, cu, cd tests vane shear torsional shear in situ tests direct shear test pros a quick and inexpensive test to obtain the shear strength parameters of both fine and coarse grained soils either in undisturbed or remolded state ease of sample preparation. As such, an appropriate height cannot be defined for the calculation of shear. The manual follows the astm standards published in the 2006 annual book. Young bureau of reclamation denver office denver co 80225 12. The concept of direct shear is simple and mostly recommended for granular soils, sometimes on soils containing some. Experimental and numerical analysis of direct shear test. This test is also useful to study friction between two materials, one material in lower half of box and another material in the upper half. The shear strength is expressed as where c effective cohesion. To facilitate the remoulding purpose, a soil sample may be compacted at optimum moisture content in a compaction mould. Students should be present in the labs for the total scheduled duration. The test is performed by deforming a specimen at a controlled strain rate on or near a single shear plane determined by the configuration of the apparatus.
Feb 09, 2015 ce 326 webcast on the direct shear test. Standard test method for direct shear test of soils under consolidated drained conditions1 this standard is issued under the. Direct shear test equipment soil mechanics karolwarner. For any soil cohesion c and angle of internal friction o are two important engineering properties, which indicate the. The water content is the ratio, expressed as a percentage, of the mass of pore or. Geotechnical engineering laboratory class 6 shear strength direct shear test sources. Preface this laboratory soil testing manual provides a detailed guide of fourteen common laboratory soil tests. Ce 344 geotechnical engineering sessionali lab manual. Place moist porous inserts over the exposed ends of the specimen in the shear box. Laboratory vane shear college of engineering, pune.
Direct shear test of soils under consolidated drained conditions soils odot test methods. An automatic test hole log is prepared and lab test. Direct shear test an overview sciencedirect topics. This edition completely replacesy 201the 9 labofebruarratory manual of test procedures. Unconsolidated, undrained triaxial compression test 49 14. Direct shear test 70 14 of soil by vane 75 15 standard penetration test 77. May 10, 2016 ce 326 mod 12 9a direct shear test duration. Direct shear testing is covered in astm standard d3080, standard method for direct shear test on soils under consolidated drained conditions. Routine rock test procedure described in this manual.
Civ e 353 geotechnical engineering i direct shear test 2006 page 3 of 5 department of civil engineering 8. Lab manual mainly deals with the common and standard laboratory tests on. When conducting the direct shear test, typically three or more tests are ran to make up a series and are combined to determine. Laboratory testing 200d1 design manual chapter 200 geotechnical design originally issued. This instruction manual guides the students to conduct the test as per. When conducting the direct shear test, typically three or more tests are ran to make up a series and are combined to determine strength properties such as mohr strength envelopes. Engineering practice requires that professionals use a. Engineering manual preamble this manual provides guidance to administrative, engineering, and technical staff. Direct shear test of soils under consolidated drained. Department of civil engineering geotechnical engineering. In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to.
Will be explained in the lab direct shear equipment the shear box align the box under the normal load cell adjust the displacement lvdt secure the shear box apply the normal load in the computer software give the displacement limit to failure specify the rate of horizontal shear application. The test results are applicable to assessing strength in a field situation where complete consolidation has occurred under the existing normal stress. Procedure for performing direct shear and sliding friction. A professional and complete report is expected for each exercise. Iit gandhinagar, soil mechanics lab page1 indian institute of technology gandhinagar department of civil engineering soil mechanics laboratory direct shear test is2720part1986reaffirmed2002 theory concept. Making and curing concrete test specimens in the lab weight per gallon determination of paints. In this article, our main focus will be on direct shear test. Manual control for both vertical and horizontal motion of the sheartrac ii load frame is. The test may now be conducted by applying horizontal shear load to failure or to 20. Vane shear test is a simple and quick test, which can be performed either in laboratory or in the field. Indian institute of technology gandhinagar department of. T peshawar the list of experiments can be seen in table of contents under the supervision of sir engr.
During the direct shear test, there is a rotation of the principal stress, which may or may not model field conditions. Introduction the test is carried out on either undisturbed samples or remoulded samples. This lab manual was prepared with the help of astm and. If you continue browsing the site, you agree to the use of cookies on this website. Aug 27, 2016 direct shear of soil according to astm d 3080 slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. This marketleading text also offers careful explanations of laboratory procedures in order to help reduce errors and improve safety. This test is performed to find shear strength of a given generally very soft soil specimen. Geotechnical engineering lab vi semester page 1 gcem approved by aicte new delhi, affiliated to vtu belgaum department of civil engineering geotechnical engineering lab lab manual 10cvl67 20162017 prepared by. Direct shear test iitgn event calendar iit gandhinagar. Class 6 shear strength direct shear test geotechnical. The laboratory vane shear test for the measurement of shear strength of cohesive soils, is useful for soils of low shear strength less than 0.
Brazilian test, direct shear, stiffness ultrasonics, elastic modulus, and durability slaking. To determine the specific gravity of a coarse grained soil sample by pycnometer method. The objective of this test is to find the shear strength of soil. The computer and monitor are used for displaying test results in real time, and for editing test results and producing a report after the test has been completed. During the determination of soil shear strength in a laboratory by different test methods soil is loaded in a different way.
This constitutes cmncx 1 to em 11 lo21906, 30 nov 70 daeneceg department of the army em iiio2i906 u. General configuration of the direct shear device a cross section through a typical direct shear device is shown in fig. Performing organization name and address same 1 lo. Strength of materials lab manual pdf sm lab manual pdf.
To determine the shearing strength of the soil using the direct shear apparatus. The shear strength of soil is usually determined experimentally by one of the following methods. Iit gandhinagar, soil mechanics lab page1 indian institute of technology gandhinagar department of civil engineering soil mechanics laboratory direct shear test is2720part1986 reaffirmed2002 theory concept. Standard test method for direct shear test of soils under. Posted in ge lab tests, geotechnical engineering, material testing guide, soil. This lab manual is designed and written in a clear and straightforward manner, which will make lab teaching and understanding easier. This test is performed to determine the water moisture content of soils.
This manual has the current versions of our laboratory test procedures. Direct shear test of soils under consolidated drained conditions 55 9. Laterally confined compression test, also known as the triaxial compression test. Laboratory testing and interpretation of rock properties. Moreover, failure may not occur on the weak plane since. Strength of materials lab manual pdf sm lab manual pdf file please download the strength of materi. In the direct shear test, the shear stresses and displacements are nonuniformly distributed within the soil specimen. Krishna reddy, uic 6 experiment 1 water content determination purpose. Direct shear test objective to determine the shearing strength of the soil using the direct shear apparatus. This test gives the undrained strength of the soil, in undisturbed as well as remoulded conditions both.
Direct shear test or box shear test is used to determine the shear strength of the soil. Direct shear test equipment from karolwarner is used to measure shear strength properties in samples of undisturbed or remolded soil. Geocomp is a provider of the sheartracii direct shear apparatus for soil testing configured to run direct shear, residual shear, direct simple shear, cyclic direct, simple shear, and incremental consolidation testing. Vane shear test is a cheaper and quicker method of measuring the shear strength of clay, as compared to very elaborate triaxial shear test or direct shear test. The direct shear test includes the testing of a square prism of soil that is laterally restrained and sheared along a mechanically involved horizontal plane while being subjected to pressure applied along a plane normal to the shearing plane. Direct shear test lab manual soil mechanics stress mechanics. However, if a test was identical to an aashto, ast, or mftp procedure it was not m duplicated in this manual. Engineering properties of soils based on laboratory testing prof. Direct shear tests used in soilgeomembrane interface friction. Download soil mechanics laboratory manual by braja m.
Vane shear test is a useful method of measuring the shear strength of soft clay. Engineering properties of soils based on laboratory testing r. Direct shear test lab manual free download as pdf file. A indian standard light compaction test b indian standard heavy compaction test 33 10. In many engineering problems such as design of foundation, retaining walls, slab bridges, pipes, sheet piling, the value of the angle of internal friction and cohesion of the soil involved are required for the design. Geotechnical engineering lab instruction manual 1 1. Direct shear tests used in soilgeomembrane interface friction studies august 1994 6. Direct shear test objevtives to determine the shear strength parameters for a given soil using the direct shear test. In order to investigate the possible effects of two main factors stress level and wetting on a rockfill material, a number of mediumscale direct shear tests have been conducted with different. Civ e 353 geotechnical engineering i direct shear test. Soil mechanics laboratory manual spiral bound braja.
The test can be conducted in field as well as in laboratory. Direct shear test of soils under consolidated drained conditions. Laboratory testing and interpretation of rock properties 2012 instructor. The upper part of the shear box should be raised such that a gap of about 1 mm is left between the two parts of the box. Introduction to geotechnical engineering 53,823 views. The following tests was performed by the students of civil engineering department u. As thinner specimens are used in shear box, they facilitate drainage of pore water from a saturated sample in less time. Consolidation test determination of compression index and coefficient of consolidation.
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