Soil Testing Procedure for Soil Survey. Part 1. Theoretical Background And
Total Page：16
File Type：pdf, Size：1020Kb
Load more
Recommended publications
-
Geologically Hazardous Area Assessment
Geologically Hazardous Area Assessment Guemes Channel Trail Extension Anacortes, Washington for Herrigstad Engineering, PS May 16, 2014 Earth Science + Technology Geologically Hazardous Area Assessment Guemes Channel Trail Extension Anacortes, Washington for Herrigstad Engineering, PS May 16, 2014 600 Dupont Street Bellingham, Washington 98225 360.647.1510 Table of Contents INTRODUCTION AND SCOPE ........................................................................................................................ 1 DESIGNATION OF GEOLOGIC HAZARD AREAS AT THE SITE ..................................................................... 1 SITE CONDITIONS .......................................................................................................................................... 2 Surface Conditions ................................................................................................................................. 2 Geology ................................................................................................................................................... 3 Subsurface Explorations ........................................................................................................................ 4 Subsurface Conditions .......................................................................................................................... 4 Soil Conditions ................................................................................................................................. 4 Groundwater -
Hydrometer and Viscosity Cup Guide
Hydrometers Do Work What Is Specific Gravity? Specific gravity of any solid or liquid substance is its weight compared with the weight of an equal bulk of pure water at 62 degrees F at sea level. Gases use an equal volume of pure air at 32 degrees F. There are three methods of determining the specific gravity of liquids: Hydrometer In which the specific gravity of the liquid tested is read as the scale division marking the liquid level on the stem. Bottle Method In which the specific gravity is the weight of liquid (slip) in a full bottle divided by the weight of water in a full bottle. Displacement Method In which specific gravity is the weight of liquid displaced by a body divided by the weight of an equal volume of water displaced by the same body. The first two methods are practical. The faster, easier method uses a hydrometer designed specifically for slip (see right). There are many different hydrometers. Slip should range between 1.78 to 1.75, the latter being the maximum amount of water in the body and the former the lesser amount. How To Get An Accurate Reading 1. Store hydrometer in water. This keeps slip from drying on the surface. A cut off two liter soft drink bottle is ideal. Remove and gently “squeegee” off excess water. 2. Immerse in freshly agitated slip to the stem readings. 3. Lift up, “squeegee” off excess slip. Hydrometer is now “wet coated” with slip, not with water, which would give a false reading. 4. Immerse bulb half way into slip before releasing. -
How to Read a Hydrometer
Triple Scale Beer & Wine Hydrometer • Please Note: Always handle your hydrometer with care and DO NOT BOIL Why Use a Hydrometer – A Hydrometer is an instrument used Example formula: 1.073 was the Original Gravity reading and 1.012 How to Read to measure the progress of fermentation and determine alcohol per- is the Final Gravity reading.: 1.073-1.012=.06 x 131 = 7.99% Alc. By Vol centage. How to Determine Alcohol Percentage for Wine – For A Hydrometer Hydrometer Theory – A Hydrometer measures the density of a Wine, your final reading is often below zero. In wine, nearly all the liquid in relation to water. In beer or wine making we are measuring sugar is converted to alcohol – because alcohol is lighter than wa- how much sugar is in solution. The more sugar that is in solution, ter, your reading at the end of a wine fermentation is often negative. the higher the hydrometer will float. As sugar is turned into alcohol When the reading is negative, you have to add this back to your first during the fermentation, the hydrometer will slowly sink lower in the reading. Here is an example for these situations: .990 solution. When fermentation is finished, the hydrometer will stop Example Using Potential Alcohol Scale for Wine: sinking. Original Reading: 12.5 Potential alcohol 1.000 Three Scales – What are they used for? – Each of our Fer- Final Reading: -.7 Potential alcohol mentap hydrometers comes with three scales. The Specific Gravity - - - - - - - - - scale is most often used in brewing. The Brix scale is most often used 1.010 (12.5+.7)=13.2 % alcohol by volume in winemaking. -
Enhancement of Shaft Capacity of Cast-In- Place Piles Using a Hook System
Enhancement of Shaft Capacity of Cast-in- Place Piles using a Hook System by Ghazi Abou El Hosn A thesis submitted to the Faculty of Graduate and Postdoctoral Affairs in partial fulfillment of the requirements for the degree of: Master of Applied Science in Civil Engineering Carleton University, Ottawa, Ontario ©2015 Ghazi Abou El Hosn * Abstract This research investigates an innovative approach to improve the shaft bearing capacity of cast- in-place pile foundations by utilizing passive inclusions (Hooks) that will be mobilized if movement occurs in pile system. An extensive experimental program was developed to study the shaft bearing capacity of cast-in-place piles with and without hook system in soft clay and sand. First phase of the experiment was developed to investigate the effect of passive inclusion on pile- soil interface shear strength behaviour, employing a modified direct shear test apparatus. The interface strength obtained for pile-soil specimens was found to significantly increase when passive inclusions were implemented. Apparent residual friction angle for concrete-sand interface increased from 22 to 29.5 when two hook elements were used at the pile-soil interface. The pile-clay apparent adhesion was also increased from 19 kPa to 34 kPa. A series of pile-load testing at field were performed on cast-in-place in soft clay to investigate the effect of passive inclusions on pile bearing capacity. The pile-load tests were conducted at Gloucester test site. Four model piles were cast with steel cages along with hooks (P1- no hook, P2-7 hooks, P3- 5 hooks and P4- 5 hooks) installed on the exterior side of the steel cages prior to filling the hole with concrete. -
T.C. Selçuk Ünġversġtesġ Fen Bġlġmlerġ Enstġtüsü Tuzlu
T.C. SELÇUK ÜNĠVERSĠTESĠ FEN BĠLĠMLERĠ ENSTĠTÜSÜ TUZLU TOPRAKLARDA KATALAZ ENZĠMĠNĠN AKTĠVĠTESĠ VE KĠNETĠĞĠ Emine YILDIRIM YÜKSEK LĠSANS TEZĠ TOPRAK BĠLĠMĠ VE BĠTKĠ BESLEME ANABĠLĠM DALI KONYA, 2010 ÖZET YÜKSEK LĠSANS TEZĠ TUZLU TOPRAKLARDA KATALAZ ENZĠMĠNĠN AKTĠVĠTESĠ VE KĠNETĠĞĠ Emine YILDIRIM Selçuk Üniversitesi Fen Bilimleri Enstitüsü Toprak Bilimi ve Bitki Besleme Anabilim Dalı DanıĢman: Yrd. Doç. Dr. Fariz MĠKAĠLSOY 2010, Sayfa: 72 Jüri: Yrd. Doç. Dr. Fariz MĠKAĠLSOY Prof. Dr. Nizamettin ÇĠFTÇĠ Doç. Dr. Refik UYANÖZ Bu araĢtırmada, Tuz gölü çevresi tarım dıĢı arazilerden alınan 3 toprak örneğinde çalıĢılmıĢtır. Gazometrik metod kullanılarak katalaz enziminin aktivitesi tayin edilerek kinetik parametreleri hesaplanmıĢtır. Fiziksel, kimyasal özellikleri ve % tuz oranı farklı toprakların katalaz enzim analizi 20+1 oC laboratuar koĢullarında değiĢik substrat konsantrasyonlarda (% 3, % 6, % 9, % 12, % 15, % 18, %2 1, % 24, % 27, % 30 H2O2) yürütülmüĢtür. Bu analizde ürün olarak açığa çıkan O2‟nin zamana göre değiĢimi (20, 40, 60, 80,….300 sn) kararlı hale gelmesine kadar devam edilmiĢtir. Katalaz enzim aktivitesi (υ) ve kinetik parametreleri (υ0, Vmax ve Km) her toprak için ayrı ayrı yapılmıĢtır. Sonuçlara göre, tuz konsantrasyonu yüksek toprakta katalaz enziminin kinetik parametresi olan Km‟nin değeri yüksek bulunmuĢtur. Vmax değeri ise en düĢük olarak bulunmuĢtur. Ayrıca reaksiyon hızının % 24 substrat konsantrasyonunda artıĢ gösterdiği ve daha sonra değiĢmediği tesbit edildi. Bu metod toprakta katalaz enzim aktivitesinin tesbitinde kullanılabilir. Anahtar Kelimeler: Toprak, enzim aktivitesi, katalaz, kinetik parametreler, tuz i ABSTRACT MASTER THESĠS ACTIVITY AND KINETICS OF CATALASE ENZYME IN SALINE SOILS Emine YILDIRIM Selçuk University Graduate School of Natural and Applied Sciences Department of Soil Science and Plant Nutrition Supervisor: Yrd. Doç. -
Soil Testing in Missouri a Guide for Conducting Soil Tests in Missouri
Soil Testing In Missouri A Guide for Conducting Soil Tests in Missouri University Extension Division of Plant Sciences, College of Agriculture, Food and Natural Resources University of Missouri Revised 1/2012 EC923 Soil Testing In Missouri A Guide for Conducting Soil Tests in Missouri Manjula V. Nathan John A. Stecker Yichang Sun 2 Preface Missouri Agricultural Experiment Station Bulletin 734, An Explanation of Theory and Methods of Soil Testing by E. R. Graham (1) was published in 1959. It served for years as a guide. In 1977 Extension Circular 923, Soil Testing in Missouri, was published to replace Station Bulletin 734. Changes in soil testing methods that occurred since 1977 necessitated the first revision of EC923 in 1983. That revision replaced the procedures used in the county labs. This second revision adds several procedures for nutrient analyses not previously conducted by the laboratory. It also revises a couple of previously used analyses (soil organic matter and extractable zinc). Acknowledgement is extended to John Garrett and T. R. Fisher, co-authors of the 1977 edition of EC923 and to J. R. Brown and R.R. Rodriguez, co-authors of the 1983 edition. 3 Contents Introduction……………………………………………………………….….. 5 Sampling………………………………………………………………...……. 7 Sample Submission and Preparation…………….…………………..…..……… 7 Extraction and Measurement……………………………………………..……… 7 pH and Acidity Determination……………………...………………………..…. 8 Evaluation of Soil Tests…………………………………………………………. 9 Procedures………….……………………...……………………………....……. 10 Organic Matter Loss on Ignition……………...…...…...……………………… 11 Potassium Calcium, Magnesium and Sodium Ammonium Acetate Extraction…………………….….……………………………………….… 13 Phosphorus Bray I and Bray II Methods…………...…………………….…….... 16 Soil pH in Water (pHw) ……….………………………………………………. 20 Soil pH in a Dilute Salt Solution (pHs) ………………………….…………….... 22 Neutralizable Acidity (NA) New Woodruff Buffer Method………...…………… 24 Zinc, Iron, Manganese and Copper DPTA Extraction …….….……………..... -
5. Soil, Plant Tissue and Manure Analysis
5. Soil, Plant Tissue and Manure Analysis Profitable crop production depends on applying enough nutrients to each Soil analysis field to meet the requirements of Handling and preparation the crop while taking full advantage When samples arrive for testing, of the nutrients already present in the laboratory: the soil. Since soils vary widely in their fertility levels, and crops in • checks submission forms and their nutrient demand, so does the samples to make sure they match amount of nutrients required. • ensures client name, sample IDs and requests are clear Soil and plant analysis are tools used • attaches the ID to the samples and to predict the optimum nutrient submission forms application rates for a specific crop in • prepares samples for the drying a specific field. oven by opening the boxes or bags and placing them on drying racks Soil tests help: • places samples in the oven at • determine fertilizer requirements 35°C until dry (1–5 days) (nitrate • determine soil pH and samples should be analyzed lime requirements without drying) • diagnose crop production problems • grinds dry samples to pass through • determine suitability for a 2 mm sieve, removing stones and biosolids application crop residue • determine suitability for • moves samples to the lab where specific herbicides sub-samples are analyzed Plant tissue tests help: What’s reported in a soil test Commercial soil-testing laboratories • determine fertilizer requirements offer different soil testing/analytical for perennial fruit crops packages. How the laboratory reports • diagnose nutrient deficiencies the results will also differ between • diagnose nutrient toxicities labs. It is important to select an • validate fertilizer programs analytical package that meets your requirements. -
Land Suitability Evaluation Using Gis for Vegetable Crops in Kathmandu Valley /Nepal
LAND SUITABILITY EVALUATION USING GIS FOR VEGETABLE CROPS IN KATHMANDU VALLEY /NEPAL Dissertation zur Erlangung des akademischen Grades Doctor rerum agriculturarum (Dr.rer.agr.) eingereicht an der Landwirtschaftlich-Gärtnerischen Fakultät der Humboldt-Universität zu Berlin von M.Sc. Nabarath Baniya geboren am 01.12.1969 in Kathmandu, Nepal dem Präsident der Humboldt-Universität zu Berlin Prof. Dr. Christoph Markschies Dekan der Landwirtschaftlich-Gärtnerischen Fakultät Prof. Dr. Dr. N.c. Otto Kaufmann Gutachter: Prof. Dr. sc Drs. h. c. Michael H. Böhme Dr. rer. agr. Michael La Rosa Perez Berlin, 13. Oktober 2008 Dedication To my parents, Udaya Bahadur Baniya and Til Kumari Baniya, who would have appreciated seeing it if they were still alive. II ACKNOWLEDGEMENT I wish to express my gratitude to all those who have given me assistance, help and support during the completion of my PhD in Faculty of Agriculture and Horticulture, Institute of Horticultural Sciences, Humboldt University of Berlin. I acknowledge a deep sense of gratitude to Prof. Dr. Michael Böhme my supervisor, who had always spread his helping hands during my PhD study periods, and given me guidance, valuable suggestion, critical comments and kindness during and completion of present work. His innovative research ideas kind patient and effective guidance throughout my work need not to be exaggerated. This thesis would never be accomplished in this shape without his selfless contributions in various aspects. I am very happy to state that I got to learn a lot from his experience in field of horticulture science. I gratefully acknowledge Dr. rer. agr. Michael La Rosa Perez, LGF, WISOLA, for guiding me on analytical aspect of the present dissertation. -
An Introduction SOIL CLASSIFICATION
Ngogo Mn. Ge:140 @2019 SOIL CLASSIFICATION An Introduction SAUT; Geography Dept Ngogo Mn. Ge:140 @2019 Introduction • Classification of soil is the separation of soil into classes or groups each having similar characteristics and potentially similar behaviour. • The criteria for grouping soils depend on the purposes of classification. • Soil is not uniformly distributed. Properties of soil vary due to several soil forming factors. properties vary very widely. Soil types are many. To identify, understand, and manage soils, soil scientists have developed a set of soil classification or taxonomy systems. SAUT; Geography Dept Ngogo Mn. Ge:140 @2019 Methods of Soil Classification Systems • Systems which use the properties of the soils are called TAXONOMIC SYSTEMS OF CLASSIFICATION. • Systems that employ soil usage are called CAPABILITY CLASSIFICATION. • Though these systems are considered to be subjective or utilitarian system of classification. • International soil classification are primarily for use by soil specialists. SAUT; Geography Dept Ngogo Mn. Ge:140 @2019 Soil Classification Used in the Tropics I. The FAO/UNESCO soil map of the world (FAO/UNESCO, 1977) II. The New Comprehensive Classification System or US Soil Taxonomy Classification (Soil-Survey Staff, 1975) III. The French Classification System (Aubert (1964) SAUT; Geography Dept Ngogo Mn. Ge:140 @2019 FAO Soil Classification System • In 1977 FAO/UNESCO published the first soil map with a uniform classification throughout. • The World Soil Map is not based on any one system, but rather, a collection of national soil maps influenced by US System. • In the FAO system, the soils that occur in a particular region and exhibit a certain relationship to one another are grouped in association or “ major soil Units” SAUT; Geography Dept Ngogo Mn. -
Mapping and Analysis of the Rio Chama Landslide and Evaluation of Regional Landslide Susceptibility, Archuleta County, Colorado
MAPPING AND ANALYSIS OF THE RIO CHAMA LANDSLIDE AND EVALUATION OF REGIONAL LANDSLIDE SUSCEPTIBILITY, ARCHULETA COUNTY, COLORADO by Cole D. Rosenbaum A thesis submitted to the Faculty and the Board of Trustees of the Colorado School of Mines in partial fulfillment of the requirements for the degree of Masters of Science (Geological Engineering). Golden, Colorado Date_______ Signed: _______________________ Cole D. Rosenbaum Signed: _______________________ Dr. Wendy Zhou Thesis Advisor Signed: _______________________ Dr. Paul Santi Thesis Advisor Golden, Colorado Date_______ Signed: _______________________ Dr. M. Stephen Enders Professor and Interim Head Department of Geology and Geological Engineering ii ABSTRACT Recent landslides, such as the West Salt Creek landslide in Colorado and the Oso landslide in Washington, have brought to light the need for more extensive landslide evaluations in order to prevent disasters in the U.S.. The goal of this research is to characterize and map the Rio Chama landslide, evaluate conditions at failure, predict future behavior, and apply these findings to create a regional susceptibility model for similar failures. Based on the classification scheme proposed by Cruden and Varnes (1996), the Rio Chama landslide is an active multiple rotational debris slide and flow complex with observed activity since 1952, located near the headwaters of the Rio Chama River in south-central Colorado. Site reconnaissance was conducted in 2015 and 2016 and coupled with laboratory testing of samples and limit equilibrium stability analysis. A hierarchical heuristic model using an analytic hierarchy process was applied to evaluate the susceptibility of the region to failures similar to the Rio Chama landslide. Weights were assigned to parameters based on their influence on landslide susceptibility, and weighted parameters were combined to produce a regional susceptibility map. -
Test Method and Discussion for the Particle Size Analysis of Soils by Hydrometer Method
TEST METHOD AND DISCUSSION FOR THE PARTICLE SIZE ANALYSIS OF SOILS BY HYDROMETER METHOD GEOTECHNICAL TEST METHOD GTM-13 Revision #2 AUGUST 2015 GEOTECHNICAL TEST METHOD: TEST METHOD AND DISCUSSION FOR THE PARTICLE SIZE ANALYSIS OF SOILS BY HYDROMETER METHOD GTM-13 Revision #2 STATE OF NEW YORK DEPARTMENT OF TRANSPORTATION GEOTECHNICAL ENGINEERING BUREAU AUGUST 2015 EB 15-025 Page 1 of 32 TABLE OF CONTENTS PART 1: TEST METHOD FOR THE PARTICLE SIZE ANALYSIS OF SOILS BY HYDROMETER METHOD .............................................................................3 1. Scope ........................................................................................................................3 2. Apparatus and Supplies ............................................................................................3 3. Preparation of the Dispersing Agent ........................................................................4 4. Sample Preparation and Test Procedure ..................................................................4 5. Calculations..............................................................................................................7 6. Quick Reference Guide ..........................................................................................12 APPENDIX ....................................................................................................................................14 A. Determination of the Composite Correction for Hydrometer Readings ................14 B. Temperature Correction Value (Mt) ......................................................................15 -
Classification of Soil Magnetic Susceptibility and Prediction of Metal Detector Performance – Case Study of Angola
Classification of soil magnetic susceptibility and prediction of metal detector performance – case study of Angola Holger Preetz*a, Sven Altfelderb, Volker Henningsb, Jan Igela aLeibniz Institute for Applied Geophysics, Stilleweg 2, D-30655 Hannover, Germany bFederal Institute for Geosciences and Natural Resources, Stilleweg 2, D-30655 Hannover, Germany Abstract Soil magnetic properties can seriously impede the performance of metal detectors used in landmine clearance operations. For a proper planning of clearance operations pre-existing information on soil magnetic susceptibility can be helpful. In this study we briefly introduce a classification system to assess soil magnetic susceptibilities from geoscientific maps. The classification system is based on susceptibility measurements conducted on archived lateritic soil samples from 15 tropical countries. The system is applied to a soil map of Angola, resulting in a map that depicts soil magnetic susceptibilities as a worst case scenario. An additional layer depicting the surveyed mine affected communities in Angola is added to the map, which demonstrates that a large number of those are located in areas where soil is expected to impede metal detector performance severely. Keywords: Angola, soils, soil classification, magnetic susceptibility, metal detector, landmine detection 1. INTRODUCTION Angola is one of more than 75 countries worldwide affected by landmines and/or unexploded ordnance (UXO). Many of these countries are located in the tropics and Angola belongs to the most contaminated places1. The country suffered from a long lasting civil war which began with its independence from Portugal in 1975 and ended in 2002. It is estimated that 500,000 to 1 million landmines remain as a legacy of the armed conflict and still represent a deadly hazard to large parts of the civil population.