Apr 29, 2017 plate load test is taken by enhancing the property of soil by stone foundation in the site of jabalpur jain mandir near tilwara ghat gaushala. Plate load test equipment, procedure, calculation advantages of plate load test. Our service includes test methodology and planning advice, onsite testing, analysis and reporting. Effects of in situ conditions, test procedure and calculation method. In shallow foundation design, the plate load test can be used to determine the stresssettlement relationship, the bearing capacity, and failure modes of shallow. However, static load test requires high cost and testing period. Plate load test is a test carried out at the site to determine the allowable bearing capacity of the soil. The reinforcement shall be cut and head levelled with plaster of paris. A bearing plate with a hole shall be placed on the head for the jack to rest. Using plateman, our approach guarantees a safe, accurate and timely service with fully auditable test results that are completed to ukas standards. The plate load test basically consists of loading a steel plate placed at the foundation level and recording the settlements corresponding to each load increment. The test involves pressing a steel bearing plate into the surface to be measured with a hydraulic jack.
A pit is excavated in the ground at which foundation is to be laid. Static plate load tester supports the following standards. In this video i have talked about the plate load test which is used to find the bearing capacity and the settlement of the foundation. Computational test results of the static load plate test and of the dynamic load plate test are set in contrast to an effort to demonstrate the differences and the common features of the outcomes. Astm e283511 2015 standard test method for measuring deflections using a portable impulse plate load test device, tp bfstb partb 8. The dynamic plate loading test using the lightweight deflectometer lwd has been developed as a test procedure for the determination of the dynamic deformation modulus evd of soils and unbound fill materials 12, 9. Use a pressure gage for the jack so that the pressure. Hoy, texas highway department this paper covers the general principles of pile load testing, including objectives of pile testing, importance of planning, various types and methods. The plateman is a battery powered, wireless, auto logging test system complete with reporting software. This study evaluates the use of plate load test in ascertaining elastic modulus, e s of a site in calabar, niger delta, nigeria. It basically consists of loading a steel plate of known diameter and recording the settlements corresponding to each load increment.
This is a field test which determines the coefficient of elastic uniform compression cu or modulus of subgrade reaction ks. Plate load test plate load test procedure and limitation. Dynamic plate load test lwd zfg3000 mounting youtube. High strain dynamic testing high strain dynamic testing encompasses dynamic pile monitoring and dynamic load testing. Making the assumption that the plate settlement is the same of an elastic halfspace, until the limit pressure is reached, the stressstrain modulus, es, can be expressed from results of a plate load test in terms of the ratio of bearing pressure to plate settlement, as stated in eq. Pile driving monitoring consists of using a pda to perform real time evaluation of case method capacity, energy transfer, driving stresses and pile integrity for every blow. The test shall be carried out in general accordance with bs 77. Plate load testing geotechnical instrument testing services. Cyclic plate load test free download as powerpoint presentation. Use an automatic load maintaining pump with manual supplement to control load application.
The design and application of large diameter open end pipe piles ldoepps is of significant interest to designers. The activity of plate bearing test is performed in order to determine the bearing capacity of soil underneath that is likely to take the anticipated load of temporary or a. Plate bearing test plate bearing test is an important field test for determining the bearing capacity of the foundation. Appropriate subsoil deformation measurements are carried out after three load tests. Dynamic plate load test via bluetooth dynamic load plate test according astm e283511. Advantages of the dynamic plate load testing with the light weight. In this a compressive stress is applied to the soil pavement layer through rigid plates of relatively large size and the deflections are measured for various stress values. Plt plate load test plate load test is a field test which is commonly adopted to determine the bearing capacity and settlement of soil under a given condition of loading. To calculate safe bearing capacity suitable factor of safety is applied. Plate bearing test is carried out in the field to serve this purpose. A particular soil needs to have an ideal or optimum amount of moisture to achieve maximum density. The size of pit is generally 5 times the size of the.
In this test a square or circular rigid plate of standard dimension generally 300 mm2 for square or 300 mm dia for circular is placed. Pdf comparison between dynamic and static pile load testing. 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 know and speak the laws that govern them. Investigation of the dynamic plate loading test with the. The static plate load tester hmp pdg hmp magdeburger. Plate load test is a field test for determining the ultimate bearing capacity of soil and the likely settlement under a given load. Astm e2835 112015 standard test method for measuring deflections using a portable impulse plate load test. Plate load test for calculation of bearing capacity and. Pile head the pile head shall be chipped off till sound concrete is met wherever applicable.
However, there are differences in the, number of loading cycles, maximum loading, load increment and steps, loading time for each step, and the way to determine the modulus. Aug, 2015 plate load test best ppt useful search 1. Static and dynamic load testing of large diameter pipe. Many times it happens that the area available for testing is very small so it very difficult to go for standard plate load test as it requires a large space. All bsi british standards available online in electronic and print formats. In this video i have talked about the plate load test which is used to find the bearing capacity and the settlement of the. Plate bearing test plate load testing site testing. This test is used to measure settlement of soil, earthworks, ground, pile mats, crane pads and other. This test methodology also interprets the first loading. The plate bearing test is carried out in accordance with bs 77 part 9.
California bearing ratio cbr, plate load test plt, modulus of elasticity e, modulus of subgrade reaction k. Pdf evaluation of soil bearing capacity by plate load test qasim. Comprehensive correlations to direct test methods are available. Plate load testing is usually used for the verification of the bearing capacity of the land of the substrate, of the foundation layer and the base layer of the flooring, although it is not uncommon to its use to investigate the bearing capacity of the soil surface or to the state compaction of granular materials and road surfaces the load test consists in transmitting to the soil to be. If the prepared soil surface has any hollows or voids, they will be filled with dry sand or crusher dust to prepare a level surface on which to bed the plate. The foundation of soil is considered safe when the factor of safety against shear failure. Cyclic plate load test elasticity physics beam structure. Din 1834, bs77 static plate load test can be utilized in earthworks and foundation engineering, as well as road construction in order to determine load settlement lines and by this to evaluate the deformability and the load capacity of the soil. Eb 15025 page 1 of 55 geotechnical control procedure. The test load is gradually increased till the plate starts to sink at a rapid rate. Plate load test settlement of foundation soil mechanics youtube. James fisher testing services jfts offers a complete plate load testing service. So, plate load test is helpful for the selection and design the foundation.
A laboratory study of cyclic plate load test on lime and rice husk. This is important not only for durability, but will save money because less compaction effort is needed to achieve the desired results. The load test included in the standard is also used to find modulus subgrade reaction useful in the design of raft. If a plate load tests is used to evaluate settlement and bearing capacity. The area depicts a coastal plain environment with typical sandy and. The measurement is carried out under static load which allows us to specify geotechnical parameters of the subsoil. Therefore, pile design has been mainly based on empirical equations and soil. This plate load test consists of a reaction or dead load and a hydraulic jack with dial gauges. Astm d1194 94 standard test method for bearing capacity of.
The dynamic load pile test, which is a simple quality control test offering a considerable savings of time and cost and requires less space, can be used for predicting pile capacity and pile. Marine clay, rha, lime, omc, mdd, fsc, cyclic plate load test. Apparatus used in plate load test the procedure of doing plate bearing test different graphs obtained during plate load test corrections of. Federation of piling specialists handbook on pile load testing. Dynamic load testing dlt introduction dynamic load testing can be an attractive cost effective alternative to traditional full scale static load testing. No studies have used the plate load test to evaluate reinforced. This method is useful to solve the design problems for. A pit 5 times the size of plate is excavated at the proposed depth of foundation to build the set up for plate load test. Purchase your copy of astm e2835 112015 as a pdf download or hard copy directly from the official bsi shop. Dimension effect on plate load test results avestia. This test method covers a procedure for running a repetitive static plate load test on. Plate load test for calculation of bearing capacity and settlement. Interpretation translation of arvor geotechniqueportance des platesformes, chapter 3.
Hmp lfg4 the dynamic plate load test by means of the light. Plate bearing test also known as plate load test or static loading test, is an insitu load bearing test of soil. Can one use the dynamic cone penetrometer to predict the. The test is an empirical test which gives an indication of the shear strength of a soil. Federation of piling specialists handbook on pile load testing 10 foreword this handbook was published in march 2006 by the federation of piling specialists fps to provide guidance on the principles and practical issues that relate to load testing of bearing piles, and thereby to assist informed decisions about testing. To calculate safe bearing capacity suitable factor of. Plate load test is done at site to determine the ultimate bearing capacity of soil and settlement of foundation under the loads for clayey and sandy soils. The plateman brings the standard plate load test up to date at last, with benefits for both users and clients in terms of rapid testing, instant results and accurate measurements. In highway formations the subgrade layer, where acts as a pavement foundation should be well designed. Many innovative foundation techniques have been devised as a. Introduction plate load tests are important field tests for geotechnical engineering practice.
Static and dynamic load testing of large diameter pipe piles by ben white, p. The static plate load test can be utilized in earthworks and foundation engineering, as well as road construction in order to determine load settlement lines and by this to evaluate the deformability and the load capacity of the soil. Also sometimes it is not possible to provide the required. A circular plate having a maximum diameter of 300 600mm shall be used. Astm e2835 112015 standard test method for measuring. The test load is gradually increased till the plate starts to settle at a rapid rate. During the test, records including plots of load vs. The light weight deflectometer lwd, also known as the light falling weight deflectometer, light drop weight tester, and dynamic plate load test, is a hand portable device that was developed in germany to measure the soil in situ lwd dynamic modulus. Jun 16, 2017 plate load test geotechnical how to do plate load testing,st kaise kare, plate loa duration. The procedure of the static plate load test is standar dized in din 184. Tne blast simulator was used to generate the dynamic load, ap lied during the p. A seating load of 70 gmcm 2 is applied and released after some. The test procedure of plate load test is as follows.
Typically, this modulus is used to evaluate the subsoil degree of compaction. Results from the test can be used as design parameter or used to confirm the design assumption. The entire analysis allows to establish density of the backfill layers and capacity when determining initial modulus, elastic modulus and subgrade reaction modulus. Instead of costly, time consuming proof loading using kentledge or anchor piles, the technique uses a heavy falling weight such as a piling hammer to impart a short duration.
Static and dynamic plate load tests are often used for bearing capacity evaluation of shallow foundations moraes et al. By means of the light weight deflectometer hmp lfg you are able to purposefully manage and control your compaction works and to improve. Light weight deflectometer with 500 test memory and printer. Static plate load tester construction materials testing.
The modulus of subgrade reaction is an often misunderstood and misused concept for the thickness design of slabsonground. Light weight deflectometer for dynamic plate load test using cable or bluetooth technology. The test consists o f subjecting the soil to a pulse load applied via a diskshaped steel plate. Soil plate load test for load settlement, deformability. Light weight deflectometer light weight deflectometer buy for best price. Our plate load test equipment is designed around a hydraulic cylinder and load cell to mobilise 250kn. This standard covers plate load test method for determination of ultimate bearing capacity of soil in place which assumes that soil strata is reasonably uniform. Other procedure used to determine allowable stress was the method. Standard test method for repetitive static plate load tests.
Plate load test of soil highway engineering lec11 part3. Tests were undertaken on various cbr materials and the bearing capacity bearing value measured at 2. Plate load test is a field test, which is performed to determine the ultimate bearing capacity of soil and the probable settlement under a given load. Capwap analysis is made on the pda data after the test is complete. The subsurface layers of the subsoil to a thickness of about 0,5 m can be examined by this type of dynamic plate. Vibratory plate compactors above left this wacker vp40a plate compactor only weighs 170 lbs, but only exerts a dynamic contact force of 5 to 7 psi, using 63 hz frequency lower left this bomag plate compactor weighs 726 lbs and exerts a compactive force of psi, at 62 hz frequency.
Test the compaction with the dynamic plate load test by using the falling weight deflectometer hmp lfg is fast and cost saving, easy, reliable and precise. Comparisons of rapid load test, dynamic load test and. Computational validation of static and dynamic plate load. Plate load test settlement of foundation soil mechanics. Retaining walls types, design, stability retaining walls types, design, stability retaining walls may be defined as a wall.
The plate load test see figure 1 and 2 can be used to measure the modulus of subgrade reaction for in situ material. The dynamic plate test, also known as light weight deflectometer lwd is an innovative field test designed to determine the dynamic deformation modulus evd stiffness values of soils and unbound fill materials such as capping and type 1 subbase. Standard test method for repetitive static plate load tests of soils and flexible pavement components, for use in evaluation and design of airport and highway pavements1 this standard is issued under the. Dynamic plate load test astm e283511 with bluetooth lwd.
For the first series of tests those with surcharge, the base mate. In fact, the value of ev1 characterizes the deformability of an embankment in its actual state. Plate load test determine bearing capacity of soils. This test is very popular for selection and design of shallow foundation. Plate load testing is usually used for the verification of the bearing capacity of the land of the substrate, of the foundation layer and the base layer of the flooring, although it is not uncommon to its use to investigate the bearing capacity of the soil surface or to the state compaction of granular materials and road surfaces. The dynamic plate load test performed \\ith the aid of the light dropweight tester is test procedure in which the soil receives an impact of maximum force fs transmitted through the fall of drop weight onto circular load plate of radius r which is assumed to rigid. Plate bearing tests for design of flexible and rigid pavements.
Plate load test astm pdf d1195 09 standard test method for repetitive static plate load tests of soils and flexible. Proctor test astm d155791 the proctor, or modified proctor test, determines the maximum. Conversion between static and dynamic load bearing capacity. To evaluate the subgrade strength is important during construction and design stage. Mackintosh probe test to be carried out at load test location center of plate at testing leve l before the test for calibration purpose.
See how the device is getting ready for the measurement of the pavement compaction. So this test is called a plate load test on undisturbed soil sample. The test consists o f subjecting the soil to a pulse load applied via a diskshaped steel plate that. The test is performed on a prepared ground surface. Dynamic plate testing just one of the construction testing. Compaction factor test workability of concrete compaction factor test is designed in such a way that it can be used only in laboratory but. Plate load test is one of the quick, direct and economic methods for soil bearing capacity determination. The great value of this test is that it is comparatively easy to perform and. Reaction for the load on the plate was supplied by means of the test truck operated by the bureau of materials and tests of the indiana highway department see figure 1. Pile load tests including quick load test method, conventional methods, and interpretations frank m.