This paper presents a new practical method of defining the parameters of P-Y curves for single piles under lateral loading in sand on the basis of the Standard Penetration Test (SPT) derived from a thorough analysis of a worldwide database of pile loading tests in sandy soils, which presents a contribution to the use of the SPT in the design of laterally loaded piles.
A simple and cost effective version of pressuremeter (PMT) has been developed in Pakistan at the University of Engineering and Technology, Lahore. This PMT called ‘Akbar Pressuremeter (APMT)’ has been used as prebored as well as full displacement pressuremeter. In-situ testing using APMT, Standard Penetration Test (SPT) and Cone Penetrometer (CPT) was carried out at three different sites. The sites comprised very soft to medium stiff clays,stiff to very stiff clays and loose to medium dense sands. Un-disturbed sampling using Shelby tubes was also carried out to determine soil strength parameters in the laboratory. An attempt has been made to develop mathematical correlations of PMT data with SPT, CPT and laboratory tests data. Plausibility analysis of the mathematical correlations has also been carried out.
Assessment of soil liquefaction potential to preclude associated ground failure is important for ensuring safety of NPP foundations. Among different types of in-situ test based methods for assessment of liquefaction potential, standard penetration test (SPT) based empirical method is well established and hence a preferred choice. USNRC (2003) provides guidance for Liquefaction Hazard Assessment (LHA) by empirical method, primarily based on studies by Youd et al. (2001). This work utilizes the database of earthquake induced liquefaction for earthquakes up to year 1981.
Hence, this paper attempts to make an interpretation by a combination of geoelectrical and geotechnical standard penetration test (SPT) blow counts known as N value, for a natural slope safety assessment. According to Bowles (1996), SPTtest that was developed around 1927, is a foremost method for evaluating the geotechnical characteristics of overburden materials and had widely being practice all around the world. According to Oh (2007), soil stiffness can be analyzed directly and effectively based on SPTtest. Thus, this study compares the SPT ( N value) and the geoelectrical data to interprate the geoelectrical data trend and its relationship with the slope geomaterials condition. According to Friedel et al., (2006), soil parameters determined in grain size analysis could replicate the variety of resistivities obtained on the site very well. Geotechnical classification test such as grain size distributions, fine grained lithological units type and characteristics, water content and consistency limits should be carried out in relation to landslide behavior (Ali, 2011). Thus, this study also presents some of the geotechnical laboratory data such as particle size distribution and water content data conducted at certain selected depth of the borehole soil sample.
The procedure widely used in the world for evaluating soil liquefaction resistance is termed as the „„simpliﬁed procedure.‟‟ This simpliﬁed procedure was originally developed by Seed and Idriss (1971) using blow counts from the standard penetration test (SPT) correlated with a parameter called the cyclic stress ratio that represents the cyclic loading on the soil. Since 1971, this procedure has been revised and updated (Seed 979; Seed and Idriss 1982; Seed et al. 1983, 1985; Youd et al. 1997). In the mid-1980s, a parallel procedure based on the cone penetration test (CPT) was introduced by Robertson and Campanella (1985), which also has been revised and updated (Seed and de Alba 1986; Stark and Olson 1995; Olsen 1997; Robertson and Wride 1998).The purpose of this paper is to present relation between liquefaction potential and (N 1 ) 60CS
The modeling advantage of ANNs is the ability to capture the nonlinear and complex relationship between the bearing capacity and the factors affecting it without having to assume a priori formula of what could be this relationship. Many authors have described the structure and operation of ANNs ; . Although some ANN models are not significantly different from a number of standard statistical models, they are extremely valuable as they provide a flexible way of implementing them. Model complexity can be varied simply by altering the transfer functions or network structure. Traditional empirical approaches for predicting bearing capacity of piles are used: ; ; ,  and others. As a result, the use of ANNs models may overcome the limitations of the traditional methods. In this paper, ANNs are used to predict the ultimate bearing capacity of piles base on standard penetration test (SPT) data. The aims of the paper
________________________________________________________________________________________________________ Abstract— Construction of pavements evolved and undergone many changes with regards to mix design methods and mix characterization over the years. The Marshall mix design method is currently used in Malaysia to construct hot mix asphalt (HMA) pavements. In this study, the Superpave mix design method was employed to design the HMA mix. Further investigations to evaluate the rutting performance of asphaltic mixtures using both mix design methods were conducted. Rutting is one of the most common pavement distresses in tropical climatic condition. This test was conducted on eight different types of HMA mixtures consisting of two different aggregate gradation of maximum nominal aggregate size of 12.5 and 9.5 mm. The binder used in the HMA mixture is of penetration grade 80-100 and 60-70. The Simple Performance Test (SPT) was used to evaluate rutting on both Superpave and Marshall mixes. Results showed that the Superpave mixtures are more rut resistant compared to Marshall mixtures. This is especially true for Superpave mixtures using binder penetration 60-70. The SPT provides a full characterization of the mix over a broad range of temperatures and loading frequencies, hence this test is highly recommended for evaluation of rutting performance in tropical climatic condition.
Standard penetration resistance test (SPT) has long been an industry standard for site investigation in the geotechnical field. The purpose of conducting SPT is to obtain the standard penetration resistance, commonly called the N value, which is the recorded blow count needed to advance through a 150 mm interval of soil. The N value provides engineers with a rough measure of the density of the soil and is used in many empirical geotechnical engineering formulas. However, a lot of construction project has started employing geophysical investigation as part of their site investigation process. Geophysical investigation such as electrical resistivity survey has a few advantages over more traditional site investigation methods like SPT such as non-destructive mapping technique, the ability to perform temporal monitoring of a particular site, various scales application, acquirement of detailed measurement over a large area with low cost and large sensitivity of the measurement .
sample with a nearly redshift independent selection function, have multi-wavelength follow-up imaging data from the X-ray to near-IR, and currently form the most homogeneous massive high-redshift cluster sample known. We identify 44 member galaxies, along with 25 field galaxies, among the five clusters, and describe the full set of observations and data products from Magellan/LDSS3 multi-object spectroscopy of these cluster fields. We briefly describe the analysis pipeline, and present ensemble analyses of cluster member galaxies that demonstrate the reliability of the measured redshifts. We report z = 1.259,1.288, 1.316, 1.401 and 1.474 for the five clusters from a combination of absorption-line (Ca II H&K doublet - λλ3968,3934Å) and emission-line ([OII] λλ3727,3729Å) spectral features. Moreover, the calculated velocity dispersions yield dynamical cluster masses in good agreement with SZ masses for these clusters. We discuss the velocity and spatial distributions of passive and [OII]-emitting galaxies in these clusters, showing that they are consistent with velocity segregation and biases observed in lower redshift SPT clusters. We identify modest [OII] emission and pronounced CN and Hδ absorption in a stacked spectrum of 28 passive galaxies with Ca II H&K-derived redshifts. This work increases the number of spectroscopically-confirmed SZ-selected galaxy clusters at z > 1.25 from three to eight,
Below are the major job knowledge areas (topics) covered on the 2774 Test Technician Test. Listed next to each knowledge category is the number of items on the exam that will measure that topic. You can use this information to guide your studying. Some exams also contain additional pretest items. Pretest items will appear just like all of the other items on your exam, but they will not affect your score. They are an essential part of ensuring the 2774 Test Technician Test remains relevant to successful performance of the job.
Psychologists believe that anxiety is a drive whose reason is not fully known. Anxiety is a general term for several disorders that cause nervousness, fear, apprehension, and worrying. It is a general phenomenon and does not lead to any special target. Anxiety is usually accompanied by danger expectations (Corsini, 1999). Generally speaking, anxiety is an unknown phenomenon. Anxiety is like a wave; at first, it springs up in an individual, then it will be intensified and it will gradually reach its peak and then it will decrease and finally disappear (Lefrancois, 1991,1995). People often experience a general state of worry or fear before confronting something challenging such as a test, examination, recital, or interview. These feelings are easily justified and considered normal. Anxiety is considered a problem when symptoms interfere with a person's ability to sleep or otherwise function. Generally speaking, anxiety occurs when a reaction is out of proportion with what might be normally expected in a situation
In this study, we demonstrate a role for the amino and carboxyl tails of histone H2A in telomeric silencing, a property not shared by histone H2B (Thompson et al. 1994). This represents the first evidence for the par- ticipation of histone H2A in TPE. Most of these hta1tpe alleles share a common set of phenotypes in several cellular processes (Table 2). First, all hta1tpe alleles sup- press the lys2-128 ␦ mutation. This Spt ⫺ phenotype is likely to be mediated through alterations in chromatin structure. The T125A allele confers a 2000-fold increase in the Spt ⫺ phenotype relative to wild-type cells. In con- trast, the T125AS128A allele conferred only a 7-fold increase relative to wild-type cells, although the S128A allele alone generated a wild-type phenotype. These data suggest that the mutant S128A has a strong influ- ence on the T125A phenotype and therefore clearly Figure 8.—Plasmid repair defects of hta1tpe alleles. SacI- participates in this process.
laboratory test, to generate the properties of index properties and engineering properties of soil. In-situ tests commonly performed are DCPT (Dutch Cone Penetrometer Test) and drilling accompanied by SPT (Standard Penetration Test). The soil samples from the site were taken and brought to a laboratory to do geo-lab (for testing). The results of laboratory tests produce soil parameter values which are required in the design and analysis stage for the planning stage of foundation.
With the exception of images from Magellan/Megacam (McLeod et al. 2006), all optical images were reduced with the PHOTPIPE pipeline (Rest et al. 2005; Garg et al. 2007; Miknaitis et al. 2007). Megacam images were reduced using the Smithsonian Astrophysical Observatory Megacam reduc- tion pipeline. The PHOTPIPE reduction process as applied to SPT clusters is explained in High et al. (2010) and the Megacam pipeline in High et al. (2012). All reductions include the stan- dard CCD image processing steps of masking bad or saturated pixels, applying crosstalk and overscan corrections, debiasing, flat-fielding, correcting for scattered light via illumination cor- rections, and—where necessary in the redder bands—defring- ing. Cosmic rays are also removed from the Megacam images. Images are coadded using the SWarp algorithm (Bertin et al. 2002), and astrometry is tied to the Two Micron All Sky Survey (2MASS) catalog (Skrutskie et al. 2006).
population for patients with congenital anomalies. In addition, for patients with mental retardation and developmental delay, this technology greatly improves diagnosis. The increased detection rate not only improves patient care but is cost effective. Once the patient receives a definitive genetic diagnosis no additional testing is needed, and key family members also are risk can be identified and evaluated. This test is performed based on clinical signs and symptoms.
Abstract. SPT-3G, the third generation camera on the South Pole Telescope (SPT), was deployed in the 2016-2017 Austral summer season. The SPT is a 10-meter telescope located at the geographic South Pole and designed for obser- vations in the millimeter-wave and submillimeter-wave regions of the electro- magnetic spectrum. The SPT is primarily used to study the cosmic microwave background (CMB). The upgraded camera produces an order of magnitude more data than the previous generations of SPT cameras. The telescope is ex- pected to collect a petabyte (PB) of data over course of five years, which is a significantly larger data volume than any other CMB telescope in operation. The increase in data rate required radical changes to the SPT computing model both at the South Pole and University of Chicago. This paper will describe the overall integration of distributed storage and compute resources into a common interface, deployment of on-site data reduction and storage infrastructure, and the usage of the Open Science Grid (OSG) by the SPT collaboration.