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Dissertations / Theses on the topic 'Drilled shafts'

Author: Grafiati

Published: 4 June 2021

Last updated: 8 February 2022

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1

Yamin, Moh'd. "LANDSLIDE STABILIZATION USING A SINGLE ROW OF ROCK-SOCKETED DRILLED SHAFTS AND ANALYSIS OF LATERALLY LOADED DRILLED SHAFTS USING SHAFT DEFLECTION DATA." University of Akron / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=akron1196960547.

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2

Shelman, Aaron Trask. "Seismic design of drilled shafts in clay." [Ames, Iowa : Iowa State University], 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1473259.

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3

Yang, Ke. "ANALYSIS OF LATERALLY LOADED DRILLED SHAFTS IN ROCK." University of Akron / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=akron1133907777.

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4

Karch, Daniel E. "Integrity Testing of Drilled Shafts Using Thermal Profiling." Ohio University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou151548754623562.

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5

Zhang, Lianyang 1964. "Analyis [sic] and design of drilled shafts in rock." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/9505.

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Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1999.<br>Includes bibliographical references (p. 713-732).<br>Drilled shafts are widely used to transfer heavy structural loads (both axial and lateral) through the overburden soil to the underlying rock mass. It is important to consider the effect of discontinuities when designing drilled shafts in rock. This thesis develops (1) a new design method for axially loaded rock-socketed shafts; (b) new design methods for laterally loaded rock-socketed shafts; and (c) a method for assessing the three

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6

To, Albert C. (Albert Chi Fu) 1975. "Lateral load capacity of drilled shafts in jointed rock." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/40018.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1999.<br>Includes bibliographical references (p. 263).<br>Large vertical (axial) and lateral loads often act on the heads of drilled shafts in jointed rock. In current design practice, the p-y curve method used in design of laterally loaded drilled shafts in soil is adopted in the design of such shafts in jointed rock. The p-y curve method treats the soil as a continuum. The continuum model is not applicable to jointed rock, in which the joints form blocks. A new discontinuum model was developed

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7

Mullins, Miles Patrick. "Automated Device to Measure Slurry Properties in Drilled Shafts." Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/6333.

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Slurry is the fluid within a drilled excavation that is introduced when an excavation is deeper than the water table or where additional stability is needed for loose sandy dry soils. Although construction practices vary greatly throughout the country and the world, slurry levels should be maintained above the existing ground water level by a suitable margin. The most widely used slurry type is mineral slurry formed by mixing dry clay powder with water; either bentonite or attapulgite powder may be used (attapulgite being used in saline water conditions). Regardless of whether the slurry mater

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8

Caliari, De Lima Lucas. "Construction Effects on the Side Shear of Drilled Shafts." Scholar Commons, 2017. http://scholarcommons.usf.edu/etd/7004.

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Design methods for side shear of drilled shafts, including the resistance factors that should be applied, do not account for any specific construction procedure. Instead, design often relies on analysis of case studies which include all construction methods used in each geomaterial type (e.g. clays, sands and rocks), or on parametric analysis. Nonetheless, literature suggests that different construction procedures result in varying side shear. This research investigated 2 types of construction: (1) slurry stabilization in sandy soils using bentonite and polymer products tha

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9

Kim, Sang-Ho. "Prediction of end bearing for drilled shafts and suggestion for design guidelines of end bearing for drilled shaft in Florida limestone." [Gainesville, Fla.] : University of Florida, 2003. http://purl.fcla.edu/fcla/etd/UFE0001446.

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10

Erfani, Joorabchi Arash. "Landslide Stabilization Using Drilled Shafts in Static and Dynamic Conditions." University of Akron / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=akron1306105465.

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11

Zhang, Lianyang 1964. "Analysis and design of axially loaded drilled shafts socketed into rock." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/10493.

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12

Li, Lin. "Reliability Based Design for Slope Stabilization Using Drilled Shafts and Anchors." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1415117410.

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13

Harris, Dean E. "Axial behavior of drilled shaft foundations in the piedmont residuum." Thesis, Georgia Institute of Technology, 1993. http://hdl.handle.net/1853/20686.

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14

Al, Bodour Wassel. "Development of Design and Analysis Method for Slope Stabilization Using Drilled Shafts." University of Akron / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=akron1267041620.

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15

Ahlberg, Eric Reid. "Interaction between soil and full scale drilled shafts under cyclic lateral loads." Diss., Restricted to subscribing institutions, 2008. http://proquest.umi.com/pqdweb?did=1481677151&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.

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16

Mobley, Sarah J. "Effects of Support Fluid Type on Concrete Integrity and Durability in Drilled Shafts." Scholar Commons, 2019. https://scholarcommons.usf.edu/etd/7859.

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Until recently, concrete flow in tremie-placed drilled shafts has been mischaracterized as rising uniformly with laitance formation occurring only at the top of the rising concrete in the shaft. In actuality, concrete first fills a portion of the reinforcement cage to a sufficient height to promote radial flow into the cover region. Depending on support fluid type, the radial flow can produce laitance-filled creases/channels projecting the reinforcing cage configuration to the side of shaft surface. The flow pattern (and creases) can affect filter cake thickness, cover quality and propensity f

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17

Allen, Warren. "Time Dependent Effect of Drilling Slurries on Side Shear Resistance of Drilled Shafts." Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/6453.

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Drilled shafts are cylindrical deep foundations constructed by casting fluid concrete into an excavated hole. These elements rely largely on side shear resistance generated by their substantial diameters and lengths to effectively transfer loads. Therefore, an exceptional concrete to soil interface is essential for proper performance of these structures. The FDOT preferred stabilization fluid, bentonite slurry, has been proven to degrade this interface with increased exposure time due to filter cake formation. For this reason, slurry exposure time has been limited to 36 hours by FDOT. Alternat

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18

Helmers, Matthew J. "Use of Ultimate Load Theories for Design of Drilled Shaft Sound Wall Foundations." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/36856.

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A study was performed to investigate the factors that affect the accuracy of the procedures used by the Virginia Department of Transportation for design of drilled shaft sound wall foundations. Field load tests were performed on eight inch and nine inch diameter drilled shafts, and the results were compared to theoretical solutions for ultimate lateral load capacity. Standard Penetration Tests were run in the field and laboratory strength tests were performed on the soils from the test sites. It was found that published correlations between blow count and friction angle for

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19

Jha, Pravin. "ANALYSIS OF THE EFFECTS OF HEAVILY LOADED MAT FOUNDATION ON ADJACENT DRILLED SHAFT FOUNDATION." OpenSIUC, 2015. https://opensiuc.lib.siu.edu/dissertations/1121.

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Construction of heavily loaded shallow foundations adjacent to deep foundation is generally avoided in common geotechnical engineering practice to minimize additional loads on deep foundations. However, with the growing trend of urbanization leading to a demand of new construction, it is not always possible to avoid such situation where a heavily loaded shallow foundation will be right next to the infrastructure resting on deep foundations. When this situation cannot be avoided, influence of soil pressures and deformations in soil, created by shallow foundation on adjacent deep foundation, mus

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20

Niraula, Lila Dhar. "Development of modified t-z curves for large diameter piles/drilled shafts in limestone for fb-pier." [Gainesville, Fla.] : University of Florida, 2004. http://purl.fcla.edu/fcla/etd/UFE0006988.

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21

McCall, Amy Jean Taylor. "Full-Scale-Lateral-Load Test of a 1.2 m Diameter Drilled Shaft in Sand." BYU ScholarsArchive, 2006. https://scholarsarchive.byu.edu/etd/403.

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The soil-structure interaction models associated with laterally loaded deep foundations have typically been based on load tests involving relatively small diameter foundations. The lateral soil resistance for larger diameter foundations has been assumed to increase linearly with diameter; however, few, if any load tests have been performed to confirm this relationship. To better understand the lateral resistance of large diameter deep foundations in sand, a series of full scale, cyclic, lateral load tests were performed on two 1.2 m diameter drilled shafts and a 0.324 m diameter steel pipe pil

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22

Hu, Zhihong. "Determining the optimum depth of drilled shafts subject to combined torsion and lateral loads in saturated sand from centrifuge testing." [Gainesville, Fla.] : University of Florida, 2003. http://purl.fcla.edu/fcla/etd/UFE0002722.

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23

Hollenbaugh, Joseph Erick. "Full-Scale Testing of Blast-Induced Liquefaction Downdrag on Auger-Cast Piles in Sand." BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/5494.

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Deep foundations like auger-cast piles and drilled shafts frequently extend through liquefiable sand layers and bear on non-liquefiable layers at depth. When liquefaction occurs, the skin friction on the shaft decreases to zero, and then increases again as the pore water pressure dissipates and the layer begins to settle, or compact. As the effective stress increases and the liquefiable layer settles, along with the overlaying layers, negative skin from the soil acts on the shaft. To investigate the loss of skin friction and the development of negative skin friction, soil-induced load was meas

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24

Mobley, Sarah Jo. "Electrochemical Methods to Characterize Drilled Shaft Deficiencies." Scholar Commons, 2017. http://scholarcommons.usf.edu/etd/6626.

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In recent years drilled shafts have become the preferred foundation method for marine bridges. Typically, the drilled shaft is selected over traditional driven piles due to soil strata encountered, construction economy, increased lateral stiffness requirements, and/or vibration control considerations. The most critical component in drilled shaft construction is borehole stabilization. Wall sloughing or groundwater inclusion can have devastating effects on the strength of the finished shaft however recent research has shown that the materials, more specifically the slurry, used to accomplish st

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25

Jeyaraj, Jesudoss Asirvatham. "Numerical Modeling of Concrete Flow in Drilled Shaft." Scholar Commons, 2018. https://scholarcommons.usf.edu/etd/7528.

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Drilled shafts are cylindrical, cast-in-place concrete deep foundation elements. Their construction involves drilled excavation of soil or rock using large diameter augers, and placement of the necessary reinforcing steel in the excavation followed by concreting. Where a high water table is encountered, drilling slurry is used to support the excavation walls and concreting is tremie-placed. Even though the history of drilled shaft construction goes back to the 1950s, the occurrence of anomalies persists in the form of soil inclusions, reduction in shaft cross-sectional area and exposure of rei

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26

Deese, Gregory Gene. "Slurry sand content and concrete interaction in drilled shaft construction." [Tampa, Fla.] : University of South Florida, 2004. http://purl.fcla.edu/fcla/etd/SFE0000500.

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27

Bowen, Justin. "The Effects of Drilling Slurry on Reinforcement in Drilled Shaft Construction." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4804.

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Drilled shafts are cast-in-place concrete, deep foundation elements that require high levels of quality control to ensure the borehole does not become unstable either during excavation or during concreting. Bentonite slurry is a popular choice among state DOT officials nationwide to maintain borehole stability as it has a long history with reasonable load carrying performance. However, specifications developed to replicate successful shaft construction are largely based on empirical data. Further, as slurry construction is a blind process, the final as-built shaft is rarely visually inspected

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28

Dachelet, Darren O'Brien Schindler Anton K. "The effectiveness of self-consolidating concrete (SCC) for drilled shaft construction." Auburn, Ala, 2008. http://repo.lib.auburn.edu/EtdRoot/2008/SUMMER/Civil_Engineering/Thesis/Dachelet_Darren_26.pdf.

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29

Hajali, Masood. "A Model for Continuous Measurement of Drilled Shaft Diameter During Construction." FIU Digital Commons, 2013. http://digitalcommons.fiu.edu/etd/881.

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Non-Destructive Testing (NDT) of deep foundations has become an integral part of the industry’s standard manufacturing processes. It is not unusual for the evaluation of the integrity of the concrete to include the measurement of ultrasonic wave speeds. Numerous methods have been proposed that use the propagation speed of ultrasonic waves to check the integrity of concrete for drilled shaft foundations. All such methods evaluate the integrity of the concrete inside the cage and between the access tubes. The integrity of the concrete outside the cage remains to be considered to determine the lo

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30

Sharo, Abdulla Ahmad. "Pressuremeter Applications in Laterally Loaded Drilled Shaft Socketed into Transversely Isotropic Rock." University of Akron / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=akron1251399675.

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31

Hagerman, Daniel J. "Evaluating the Effect of Temporary Casing on Drilled Shaft Rock Socket Capacity." Scholar Commons, 2017. http://scholarcommons.usf.edu/etd/6853.

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The purpose of this study was to determine the effect on side shear resistance in limestone when temporary casing is used. Due to testing in actual limestone being an unrealistic goal, simulated limestone mixes were prepared and cast into 6 – 42 in. diameter beds. Limestone throughout Florida can be quite varied (e.g. 50-5000 psi) but where stronger limestone is not likely to be penetrated by casing installation. Therefore, target unconfined compressive strengths of the study specimens ranged between 60 psi to 850 psi. A simulated limestone material was developed based on over 200 cylinders ca

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32

Bowles, Seth I. "Statnamic Lateral Load Testing and Analysis of a Drilled Shaft in Liquefied Sand." BYU ScholarsArchive, 2005. https://scholarsarchive.byu.edu/etd/723.

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Three progressively larger statnamic lateral load tests were performed on a 2.59 m diameter drilled shaft foundation after the surrounding soil was liquefied using down-hole explosive charges. An attempt to develop p-y curves from strain data along the pile was made. Due to low quality and lack of strain data, p-y curves along the test shaft could not be reliably determined. Therefore, the statnamic load tests were analyzed using a ten degree-of-freedom model of the pile-soil system to determine the equivalent static load-deflection curve for each test. The equivalent static load-deflection cu

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33

Taylor, Amy Jean. "Full-scale-lateral-load test of a 1.2 m diameter drilled shaft in sand /." Diss., CLICK HERE for online access, 2006. http://contentdm.lib.byu.edu/ETD/image/etd1263.pdf.

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34

Bailey, Joseph Donald Schindler Anton K. Brown Dan A. "An evaluation of the use of self-consolidating concrete (SCC) for drilled shaft applications." Auburn, Ala., 2005. http://hdl.handle.net/10415/1278.

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35

Winters, Danny. "Selected Topics in Foundation Design, Quality Assurance, and Remediation." Scholar Commons, 2014. https://scholarcommons.usf.edu/etd/5153.

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There are over 602,000 bridges in the United States, of which 12.5% are classified as functionally obsolete and 11.2% are structurally deficient. The functionally obsolete bridges will require expansion or replacement to increase the service capacity of the bridge. The structurally deficient bridges will either need remediation of the load carrying elements which are damaged or deteriorated or will need to be replaced completely. Replacement of the bridges means new construction; new construction means better design and quality assurance to meet the 100+ year service life requirement in place

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36

Lowry, Sonia L. "Analysis of statnamic load test data using a load shed distribution model." [Tampa, Fla.] : University of South Florida, 2005. http://purl.fcla.edu/fcla/etd/SFE0001238.

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37

Johnson, Kevin Russell. "Advancements in Thermal Integrity Profiling Data Analysis." Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/6520.

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Thermal Integrity Profiling (TIP) is a relatively new non-destructive test method for evaluating the post-construction quality of drilled shafts. Therein anomalies in a shaft are indicated by variations in its thermal profile when measured during the curing stages of the concrete. A considerable benefit with this method is in the ability to detect anomalies both inside and outside the reinforcement cage, as well as provide a measure of lateral cage alignment. Similarly remarkable, early developments showed that the shape of a temperature profile (with depth) matched closely with the shape of t

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38

Pauly, Nicole M. "Thermal Conductivity of Soils from the Analysis of Boring Logs." Scholar Commons, 2010. http://scholarcommons.usf.edu/etd/3614.

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Recent interest in "greener" geothermal heating and cooling systems as well as developments in the quality assurance of cast-in-place concrete foundations has heightened the need for properly assessing thermal properties of soils. Therein, the ability of a soil to diffuse or absorb heat is dependent on the surrounding conditions (e.g. mineralogy, saturation, density, and insitu temperature). Prior to this work, the primary thermal properties (conductivity and heat capacity) had no correlation to commonly used soil exploration methods and therefore formed the focus of this thesis. Algorithms we

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39

Yeasting, Kyle Douglas. "The Evaluation of Hybrid Slurry Resulting from the Introduction of Additives to Mineral Slurries." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3415.

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Drilled shaft construction often requires the use of drill slurry to maintain borehole stability during excavation and concreting. While drill slurry may be composed of fluids ranging from air to petroleum, drilled shaft construction typically makes use of water based drilling fluids. Although clean water may be utilized as a drilling fluid, a premixed slurry consisting of water, minerals, and/or polymers is more commonly used. Florida Department of Transportation (FDOT) specifications require the use of mineral slurry for all primary structures. The slurry resists the intrusion of groundw

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40

Anderson, Byron Keith. "Thermal Integrity Profiling Instrumentation Development." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/2987.

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Abstract This thesis has shown that the development of the instrumentation necessary to provide in-situ thermal imaging for the determination of homogeneity of concrete is theoretically sound. Drilled shafts are large diameter underground cast-in-place columns that necessarily rely on sound integrity to properly withstand imposed loadings. As a by-product of the most common construction techniques, the entire process is often completely blind whereby the excavation and concreting processes are conducted beneath the surface of the water table (or slurry level). This results in an inability to i

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41

Shatnawi, Ehab Salem. "Development of P-Y Criterion for Anisotropic Rock and Cohesive Intermediate Geomaterials." University of Akron / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=akron1216311932.

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42

GRÖNKVIST, EMIL. "New bore pipe connection for Slotborer." Thesis, KTH, Maskinkonstruktion (Inst.), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-192185.

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Slotborer är benämningen på en ny maskinprototyp som skall användas för att i gruvor borra och utvinna platina. För att erhålla ett visst borrdjup skarvas borrpipor vilket åstadkoms med en gängkoppling. Detta arbete har haft som syfte att utveckla en ny koppling för dessa pipor då konstruktionen med gängor har visat sig vara problematisk. Ett antal koncept genererades varefter det mest lovande, enligt diskussion med kund och Pughs beslutsmatriser, valdes för vidareutveckling. Detta valda koncept var en typ av bajonettkoppling som förfinades och det gjordes en 3D CAD-modell samt mer detaljerade

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43

Stokes, Michael Jeffrey. "Advancements in rapid load test data regression." [Tampa, Fla] : University of South Florida, 2006. http://purl.fcla.edu/usf/dc/et/SFE0001929.

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44

Teixeira, Cornélio Zampier. "Capacidade de carga de sapatas, estacas de pequeno diâmetro e tubulões curtos em função do SPT: um estudo em solos residuais de Gnaisses para a região Sul de Minas." Universidade de São Paulo, 1997. http://www.teses.usp.br/teses/disponiveis/18/18132/tde-10052018-104421/.

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Esta Tese aborda, de modo original e pioneiro, importantes aspectos da Engenharia de Fundações do Sul de Minas: a) sistematização de conhecimentos sobre a Geologia regional; b) identificação e caracterização da prática de fundações; c) definição (com a formação de um banco de dados) dos perfis mais representativos do subsolo de suas principais cidades; d) estudo dos parâmetros físicos, químicos e geomecânicos de um solo típico; e) implantação de campo experimental de fundações da Universidade Federal de Lavras, com a realização de provas de carga. Grande ênfase foi dada aos itens (a), (c) e (e

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45

Zouhar, Martin. "Novostavba administrativní budovy v Blansku." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227269.

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The solution of the diploma thesis is the office block in Blansko. Building is suggested for using as insurance company. This building is located in a particular territory which had precisely limited the possibilities of the construction. There are three aboveground floors. The building is designed like reinforced concrete frame with complete masonry type THERM. The building is built on drilled piles that are connected fundamental grate. The facade is made as ceramic aired facade. The building has a flat roof with classical succession layer and is stabilized by gravel. The building is designed

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46

Lee, Yun-Shiuan, and 李昀宣. "Evaluation of Lateral Interpretation Criteria for Drilled Shafts." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/86141559096578717464.

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碩士<br>中原大學<br>土木工程研究所<br>96<br>This paper is a critical evaluation of lateral interpretation capacity for the drilled shafts under lateral loading. A wide variety of lateral load test data are used and these data are divided into drained and undrained databases. Each database is further divided into flexible and rigid shafts according to their shaft-soil relative rigidity. The geotechnical and load test parameters were evaluated using updated methods that can properly reflect the field condition under load test. Representative interpretation criteria are applied to these load test data to esta

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47

Chuang, Bo-Yi, and 莊伯誼. "Axial Behavior of Drilled Shafts in Mutilayer Soils." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/56480088065582690659.

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碩士<br>國立暨南國際大學<br>土木工程學系<br>98<br>Drilled shafts have been the preferred foundation system for infrastructure and buildings over the past decades. Ground profile with multiple layers is often encountered in several metropolises around the world. Analysis and design of drilled shafts in this type of strata should consider resistances contributed from different geomaterial types. A load test database of drilled shafts in this type of ground profile was compiled for study of three analysis models and development of reliability based design (RBD) equations. The proposed RBD format utilizes multip

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48

Hung, Yu-Ting, and 洪于婷. "Analysis of Soil Slope Stabilized by Drilled Shafts." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/75274052986506434905.

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碩士<br>國立臺灣科技大學<br>營建工程系<br>98<br>The mountains accounted for 75% of land area of Taiwan, so slope failure occurs frequently. Therefore, we must do our best to analyze the stability of slope and to choose the slope protection measure so that we can ensure people’s safety against accidents and financial losses. This research conducts a series analysis on hypothetical cased that are developed according to a colluvium soil slope case along a highway in northeastern Taiwan. First, the potential slip surface is searched using the commonly used slope stability program STEDwin 2.64. Then, the computer

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49

HSUEH, CHAO-KUANG, and 薛朝光. "Nonlinear Behavior of the Drilled Shafts Subjected to Lateral Loading." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/68018915522272695526.

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博士<br>國立海洋大學<br>河海工程學系<br>92<br>The response of drilled shafts, which are composed of steel and concrete, subjected to laterally loading is highly nonlinear due to the effects of nonlinearity in shaft and soil materials, geometric properties and pile-soil interaction. The response of group drilled shafts is more complicated when the effects of cap restraint and pile-soil-cap interaction become significant. The main purpose of this study is to investigate and explore the importance of the above-mentioned effects on lateral performance of drilled shafts. Based on the in-situ arrangement, designe

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50

Burkett, Terry Bryce. "Resistance analysis of axially loaded drilled shafts socketed in shale." 2013. http://hdl.handle.net/2152/21935.

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An investigation into the load-settlement behavior of two drilled shafts, founded in shale, is presented. The motivation for this research is to advance the understanding on how drilled shafts react under loading in stiff clays and shales. The objectives of the study are to measure the strengths within the subsurface material at the test site, estimate the unit side shear and unit end bearing of the shale-shaft interaction by running two axial load tests, and compare the results to the current design methods that are used to predict the axial capacity of drilled shafts. A comprehensive field i

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