Rock-Cut Hiding Complexes from the Roman Period in Israel1
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Resurrection from Bunkers and Data Centers Adam Fish and Bradley L
Resurrection from Bunkers and Data Centers Adam Fish and Bradley L. Garrett Abstract Bunkers are imposing physical objects that reveal surprising insights into how humans attempt to control time. This brief article investigates how concepts of time are structured through the architectural form by comparing two types: bunkers built to preserve human life and bunkers built to preserve data, or data centers. Though these two bunkers differ in what they seek to protect, each hinges on resurrection. In other words, the success of the bunker requires the emergence of its contents (people and/or data) at some point in the future. Where emergence is premature or never takes place, the temporality of the bunker is interrupted, rendering its materiality moot; unplanned interruptions may have serious consequences for life and death. Introduction: Materiality → Temporality ‘If our planet remains a self-sustaining environment, how nice for everyone and how bloody unlikely,’ she said. ‘Either way, the subterrane is where the advanced model realizes itself. This is not submission to a set of difficult circumstances. This is simply where the human endeavor has found what it needs.’ -Don Delillo (2016: 339) The bunker is a securitized storage space that bodies, objects, and materialized information enter in defense against anticipated threat. The mountain or cliff cave was humanity’s prehistoric bunker - a geological gift of sanctuary - where our ancestors lived, stored food, and buried their dead. Bunker development, from excavation and underground construction, co-evolved with agricultural sedentarism to protect grain, living people, and stored riches, with these bunkers always outliving their harboured artifacts, and the people who built them. -
Fire Service Features of Buildings and Fire Protection Systems
Fire Service Features of Buildings and Fire Protection Systems OSHA 3256-09R 2015 Occupational Safety and Health Act of 1970 “To assure safe and healthful working conditions for working men and women; by authorizing enforcement of the standards developed under the Act; by assisting and encouraging the States in their efforts to assure safe and healthful working conditions; by providing for research, information, education, and training in the field of occupational safety and health.” This publication provides a general overview of a particular standards- related topic. This publication does not alter or determine compliance responsibilities which are set forth in OSHA standards and the Occupational Safety and Health Act. Moreover, because interpretations and enforcement policy may change over time, for additional guidance on OSHA compliance requirements the reader should consult current administrative interpretations and decisions by the Occupational Safety and Health Review Commission and the courts. Material contained in this publication is in the public domain and may be reproduced, fully or partially, without permission. Source credit is requested but not required. This information will be made available to sensory-impaired individuals upon request. Voice phone: (202) 693-1999; teletypewriter (TTY) number: 1-877-889-5627. This guidance document is not a standard or regulation, and it creates no new legal obligations. It contains recommendations as well as descriptions of mandatory safety and health standards. The recommendations are advisory in nature, informational in content, and are intended to assist employers in providing a safe and healthful workplace. The Occupational Safety and Health Act requires employers to comply with safety and health standards and regulations promulgated by OSHA or by a state with an OSHA-approved state plan. -
Tunnel from Wikipedia, the Free Encyclopedia This Article Is About Underground Passages
Tunnel From Wikipedia, the free encyclopedia This article is about underground passages. For other uses, see Tunnel (disambiguation). "Underpass" redirects here. For the John Foxx song, see Underpass (song). Entrance to a road tunnel inGuanajuato, Mexico. Utility tunnel for heating pipes between Rigshospitalet and Amagerværket in Copenhagen,Denmark Tunnel on the Taipei Metro inTaiwan Southern portal of the 421 m long (1,381 ft) Chirk canal tunnel A tunnel is an underground or underwater passageway, dug through the surrounding soil/earth/rock and enclosed except for entrance and exit, commonly at each end. A pipeline is not a tunnel, though some recent tunnels have used immersed tube construction techniques rather than traditional tunnel boring methods. A tunnel may be for foot or vehicular road traffic, for rail traffic, or for a canal. The central portions of a rapid transit network are usually in tunnel. Some tunnels are aqueducts to supply water for consumption or for hydroelectric stations or are sewers. Utility tunnels are used for routing steam, chilled water, electrical power or telecommunication cables, as well as connecting buildings for convenient passage of people and equipment. Secret tunnels are built for military purposes, or by civilians for smuggling of weapons, contraband, or people. Special tunnels, such aswildlife crossings, are built to allow wildlife to cross human-made barriers safely. Contents [hide] 1 Terminology 2 History o 2.1 Clay-kicking 3 Geotechnical investigation and design o 3.1 Choice of tunnels vs. -
Power Substation Construction and Ventilation System Co-Designed Using Particle Swarm Optimization
energies Article Power Substation Construction and Ventilation System Co-Designed Using Particle Swarm Optimization Jau-Woei Perng 1, Yi-Chang Kuo 1,2,* , Yao-Tsung Chang 2 and Hsi-Hsiang Chang 2 1 Department of Mechanical and Electro-Mechanical Engineering, National Sun Yat-sen University, Kaohsiung 80424, Taiwan; [email protected] 2 Taiwan Power Company Southern Region Construction Office, Kaohsiung 81166, Taiwan; [email protected] (Y.-T.C.); [email protected] (H.-H.C.) * Correspondence: [email protected]; Tel.: +886-3676901 Received: 19 February 2020; Accepted: 21 April 2020; Published: 6 May 2020 Abstract: This study discusses a numerical study that was developed to optimize the ventilation system in a power substation prior to its installation. We established a multiobjective particle swarm optimizer to identify the best approach for simultaneously improving, first, the ventilation performance considering the most appropriate inlet size and outlet openings and second, the reduction of the synthetic noise of the ventilation and power consumption from the exhaust fan equipment and its operation. The study used building information modeling to construct indoor and outdoor models of the substation building and verified the overall performance using ANSYS FLUENT 18.0 software to simulate the air velocity and air temperature distribution within the building. Results show that the exhaust fan of the B1F cable finishing room and the 23 kV gas insulated switchgear (GIS) room optimize the reduction of horsepower by approximately 1 Hp and 0.5 Hp. The combined noise is reduced by 4 dBA and 2 dBA; the exhaust fan runs for 30 min, and the two equipment rooms can cool down by 2.9 ◦C and 1.7 ◦C, respectively. -
Underground Mining Methods and Equipment - S
CIVIL ENGINEERING – Vol. II - Underground Mining Methods and Equipment - S. Okubo and J. Yamatomi UNDERGROUND MINING METHODS AND EQUIPMENT S. Okubo and J. Yamatomi University of Tokyo, Japan Keywords: Mining method, underground mining, room-and-pillar mining, sublevel stoping, cut-and-fill, longwall mining, sublevel caving, block caving, backfill, support, ventilation, mining machinery, excavation, cutting, drilling, loading, hauling Contents 1. Underground Mining Methods 1.1. Classification of Underground Mining Methods 1.2. Underground Operations in General 1.3. Room-and-pillar Mining 1.4. Sublevel Stoping 1.5. Cut-and-fill Stoping 1.6. Longwall Mining 1.7. Sublevel Caving 1.8. Block Caving 2. Underground Mining Machinery Glossary Bibliography Biographical Sketches Summary The first section gives an overview of underground mining methods and practices as used commonly in underground mines, including classification of underground mining methods and brief explanations of the techniques of room-and-pillar mining, sublevel stoping, cut-and-fill, longwall mining, sublevel caving, and block caving. The second section describes underground mining equipment, with particular focus on excavation machinery such as boomheaders, coal cutters, continuous miners and shearers. 1. UndergroundUNESCO Mining Methods – EOLSS 1.1. Classification of Underground Mining Methods Mineral productionSAMPLE in which all extracting operations CHAPTERS are conducted beneath the ground surface is termed underground mining. Underground mining methods are usually employed when the depth of the deposit and/or the waste to ore ratio (stripping ratio) are too great to commence a surface operation. Once the economic feasibility has been verified, the most appropriate mining methods must be selected according to the natural/geological conditions and spatial/geometric characteristics of mineral deposits. -
Reasonable Paths of Construction Ventilation for Large-Scale Underground Cavern Groups in Winter and Summer
sustainability Article Reasonable Paths of Construction Ventilation for Large-Scale Underground Cavern Groups in Winter and Summer Jianchun Sun 1, Heng Zhang 1,2,*, Muyan Huang 3, Qianyang Chen 1 and Shougen Chen 1 1 Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, School of civil Engineering, Southwest Jiaotong University, Chengdu 610031, China; [email protected] (J.S.); [email protected] (Q.C.); [email protected] (S.C.) 2 School of Engineering, University of Warwick, Coventry CV4 7AL, UK 3 Institute of Foreign Languages, Sichuan Technology and Business University, Meishan 620000, China; [email protected] * Correspondence: [email protected]; Tel.: +86-028-8763-4386 Received: 19 September 2018; Accepted: 15 October 2018; Published: 18 October 2018 Abstract: Forced ventilation or newly built vertical shafts are mainly used to solve ventilation problems in large underground cavern groups. However, it is impossible to increase air supply due to the size restriction of the construction roadway, resulting in ventilation deterioration. Based on construction of the Jinzhou underground oil storage project, we proposed both a summer ventilation scheme and winter ventilation scheme, after upper layer excavation of the cavern is completed and connected with the shaft. A three-dimensional numerical model validated with field test data was performed to investigate air velocity and CO concentration. Fan position optimization and the influence of temperature difference on natural ventilation were discussed. The results show that CO concentration in the working area of the cavern can basically drop to a safe value of 30 mg/m3 in air inlet and exhaust schemes after 10 min of ventilation. -
ATP 3-21.51 Subterranean Operations
ATP 3-21.51 Subterranean Operations 129(0%(5 2019 DISTRIBUTION RESTRICTION: Approved for public release; distribution is unlimited. This publication supersedes ATP 3-21.51, dated 21 February 2018. Headquarters, Department of the Army This publication is available at the Army Publishing Directorate site (https://armypubs.army.mil), and the Central Army Registry site (https://atiam.train.army.mil/catalog/dashboard) *ATP 3-21.51 Army Techniques Publication Headquarters No. 3-21.51 Department of the Army Washington, DC, 1RYHPEHr 2019 Subterranean Operations Contents Page PREFACE..................................................................................................................... v INTRODUCTION ........................................................................................................ vii Chapter 1 SUBTERRANEAN ENVIRONMENT ......................................................................... 1-1 Attributes of a Subterranean System ........................................................................ 1-1 Functionality of Subterranean Structures .................................................................. 1-1 Subterranean Threats, Hazards, and Risks .............................................................. 1-2 Denial and Deception ................................................................................................ 1-6 Categories of Subterranean Systems ....................................................................... 1-9 Construction of Subterranean Spaces and Structures ........................................... -
The Complex History of a Sandstone-Hosted Cave in the State Of
Frank, et al. The complex history of a sandstone-hosted cave in the state of... THE COMPLEX HISTORY OF A SANDSTONE-HOSTED CAVE IN THE STATE OF SANTA CATARINA, BRAZIL LA COMPLEJA HISTORIA DE UNA CUEVA ALOJADA EN PIEDRA ARENISCA EN EL ESTADO DE SANTA CATARINA, BRASIL Heinrich Theodor Frank (1), Lizete Dias de Oliveira (1), Fabrício Nazzari Vicroski (2), Rogério Breier (3), Natália Gauer Pasqualon (1), Thiago Araújo (1), Francisco Sekiguchi de Carvalho Buchmann (4), Milene Fornari (5), Leonardo Gonçalves de Lima (1), Renato Pereira Lopes (6) & Felipe Caron (7). (1) Universidade Federal do Rio Grande do Sul, Porto Alegre-RS. (2) Universidade de Passo Fundo, Passo Fundo-RS. (3) Universidade do Vale do Rio dos Sinos, São Leopoldo-RS. (4) Universidade Estadual Paulista, Santos-SP. (5) Universidade de São Paulo, São Paulo-SP. (6) Universidade Federal do Rio Grande, Rio Grande-RS. (7) Universidade Federal do Pampa, Caçapava do Sul-RS. Contatos: [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]. Abstract The cave known as "Toca do Tatu" ("armadillo shelter") (28º46'21.2''S, 49º53'45.9''W) is located in the municipality of Timbé do Sul, in the state of Santa Catarina (Brazil) and is 48.5 m long, with two almost parallel tunnels that converge to a larger space within the cave. The general morphology of the cave and locally abundant claw scratches on the walls show that the cave was created as a shelter probably dug by ground sloths during the Cenozoic. -
Lettre D'information De La SFES #126
Lettre d'information de la SFES #126 - Mai 2012 Si vous disposez d'information qui mériterait de paraître dans la lettre d'information n'hésitez pas à nous en faire part. --- PUBLICATIONS --- SUBTERRANEA Le n° (mars 2012) de la revue trimestrielle de la SFES vient de paraitre. Au sommaire: Editorial L.Stevens Le souterrain de "Marchiol" au Temple-sur-Lot (Lot-et-Garonne) - J.-F. Garnier Le souterrain de Hangenbieten (Bas-Rhin) - B. Ferrari et O. Thiel Lers caves de Villette à Gainville (Eure-et-Loir) - J.-L. Camuset Galeries drainantes et aqueduc de la chartreuse de Bonpas (Caumont-sur-Durance - Vaucluse) JH. Mouraret Ce numéro peut être commandé au prix de 8 euros + 3,00 € de frais de port auprès de Monsieur Marcel Barbotte 5, Petite Rue 76220 BEAUVOIR EN LYONS marcel.barbotte[at]wanadoo.fr Joindre le chèque (à l'ordre de la SFES) à la commande DER ERDSTALL Le n°38 (2012) de la revue de nos collègues allemands de Der Erdstall vient de paraitre. On notera notamment au sommaire les articles suivants: - Abschlussbericht zu zu den Ausgrabungen eines unterirdischen Gangs mit Wasserbecken unter der Dorfkirkche von Homberg-Altmuthshausen, Schwalm-Eder-Kreis - C. Meiborg - ... Die Erde bewarht die Leiber auf, die unterirdischen Kammern die Seelen... Der Erdstall und das slawische Gräberfeld von Niederwünsch - E. Müller - Unterirdischen Gängen in den südniederrheinischen Lössregionen - D. Ahlborn - Die Heidbühlhöhle von Bernmatingen in Bodemseekreis - P. Forster Pour plus d'information: www.erdstall.de SUBTERRANEA BRITANNICA Le numéro d'avril 2012 (issue 29) de nos collèue d'Outre-manche vient de paraitre. Au sommaire notamment: - Visits to tessin and prora. -
Drilled Shaft Construction at Crownpoint, New Mexico
DRILLED SHAFT CONSTRUCTION AT CROWNPOINT, NEW MEXICO by Hassell E. Hunter Senior Staff Engineer Production Engineering Services Conoco Inc., Houston, Texas ABSTRACT The Wyoming Mineral-Conoco Crownpoint Project represents the rirst time that big bole drilling has been exclusively used to develop totally a privately financed mine below a depth of 1000 feet. Three shafts, one ten feet in diameter and two six feet in diameter, were successfully drilled to depths of 22431, 2188' and 2188' respectively and cased with hydrostatic designed steel casing. The largest shaft is to be used to handle muck and water from station excavation and enlargement of the other two shafts. A reverse circulation system with potassium chloride base mud was used for drilling. The mud was cleaned by settling in steel lined tanks With assistance by cyclone type separators. Deviation was monitored by gyroscopic surveying at 30 foot intervals and did not exceed 16 inches off plumb. Casing was designed to withstand hydrostatic pressures with a 1.5 safety factor to the large shaft and 1.25 safety. factor for the smaller Shafts. All casing welds were x-ray tested prior to lowering the casing in the hole. Cementing the annular space completed the operation. The total time to mobilize, drill and move off the three shafts was 363 days. The drilling operation was completed ahead of schedule and under budget. INTRODUCTION The Crownpoint Project is a joint venture between Wyoming Mineral Corporation and Conoco Inc. The operator of the Crownpoint Project is Conoco Inc. Reference hereafter to the Crownpoint Project is intended to mean the joint venture in this paper. -
An Integrated Approach to Climate Adaptation at the Chicago Transit Authority
An Integrated Approach to Climate Adaptation at the Chicago Transit Authority AUGUST 2013 FTA Report No. 0070 Federal Transit Administration PREPARED BY Chicago Transit Authority TranSystems COVER PHOTO Courtesy of AAA Engineering DISCLAIMER This document is disseminated under the sponsorship of the U.S. Department of Transportation in the interest of information exchange. The United States Government assumes no liability for its contents or use thereof. The United States Government does not endorse products of manufacturers. Trade or manufacturers’ names appear herein solely because they are considered essential to the objective of this report. An Integrated Approach to Climate Adaptation at the Chicago Transit Authority AUGUST 2013 FTA Report No. 0070 PREPARED BY Chicago Transit Authority TranSystems SPONSORED BY Federal Transit Administration Office of Research, Demonstration and Innovation U.S. Department of Transportation 1200 New Jersey Avenue, SE Washington, DC 20590 AVAILABLE ONLINE http://www.fta.dot.gov/research Metric Conversion Table SYMBOL WHEN YOU KNOW MULTIPLY BY TO FIND SYMBOL LENGTH in inches 25.4 millimeters mm ft feet 0.305 meters m yd yards 0.914 meters m mi miles 1.61 kilometers km VOLUME fl oz fluid ounces 29.57 milliliters mL gal gallons 3.785 liter L ft3 cubic feet 0.028 cubic meters m3 yd3 cubic yards 0.765 cubic meters m3 NOTE: volumes greater than 1000 L shall be shown in m3 MASS oz ounces 28.35 grams g lb pounds 0.454 kilograms kg megagrams T short tons (2000 lb) 0.907 Mg (or “t”) (or “metric ton”) TEMPERATURE (exact degrees) o 5 (F-32)/9 o F Fahrenheit Celsius C or (F-32)/1.8 FEDERAL TRANSIT ADMINISTRATION ii REPORT DOCUMENTATION PAGE Form Approved OMB No. -
Chapter 3: Construction Methods and Activities
Chapter 3: Construction Methods and Activities 3.1 INTRODUCTION This chapter describes the construction methods and activities for the Hudson Tunnel Project’s Preferred Alternative. The Preferred Alternative has two overarching components: (1) the construction of a new trans-Hudson tunnel (the Hudson River Tunnel) and associated surface and rail system improvements; and (2) the rehabilitation of the existing North River Tunnel. To ensure that the passenger rail system continues to operate at existing service levels during construction, the new tunnel would be constructed and put into operation before the rehabilitation of the North River Tunnel occurs. The Project Sponsor that will advance the Project through final design and construction, including compliance with mitigation measures, has not yet been identified. The Project Sponsor may include one or more of the Port Authority of New York & New Jersey (PANYNJ), the National Railroad Passenger Corporation (Amtrak), New Jersey Transit Corporation (NJ TRANSIT), and/or another entity that has not yet been determined. This chapter provides an overview of the likely construction methods that would be used for the Preferred Alternative, a discussion of locations where construction would occur, and a description of the potential sequencing and schedule for construction. For the new Hudson River Tunnel, this includes construction of surface tracks in New Jersey from Secaucus to the new tunnel portal in North Bergen; a new tunnel consisting of two tracks in two separate tubes beneath the Palisades, the Hudson River, and the waterfront area in Manhattan; and track modifications near Penn Station New York (PSNY) in Manhattan; and construction of ventilation shafts and fan plants in both Hoboken and Manhattan.1 The rehabilitation of the North River Tunnel includes conventional demolition and construction methods to replace tunnel elements and rail systems.