Weir sand-bypassing systems

Author: J. Richard Weggel,Coastal Engineering Research Center (U.S.)

Publisher: N.A


Category: Science

Page: 63

View: 2249

This report presents a method for designing weir sand-bypassing systems. Jetties are generally shore-normal structures built at tidal inlets to fix the location of the inlet and associated navigation channel. In a weir-jetty system one or both jetties is constructed with a low weir section across which sediment can move into a deposition basin. The sediment caught in the excavated deposition basin is periodically dredged and bypassed to downdrift beaches to preclude serious erosion of those beaches. The design of a weir bypassing system requires knowledge of the wave and sand transport conditions at a site and involves locating and proportioning the jetties, weir section, deposition basin, and navigation channel, as well as selecting and designing the desired updrift and downdrift beach configuration. Methods of data analysis and interpretation for weir-system design are presented along with guidance on proportioning the various components of a weir bypassing system.

Weir Sand-Bypassing Systems (Classic Reprint)

Author: J. Richard Weggel

Publisher: Forgotten Books

ISBN: 9781528119542

Category: Technology & Engineering

Page: 72

View: 5280

Excerpt from Weir Sand-Bypassing Systems Definition sketch of flow across weir with aerated Conditions of weir flow at various times during a tidal Definition sketch of flow across weir with submerged Discharge over weir as a function of time during a tidal Discharge over weir as a function of time during a tidal Beach profile adjacent to weir Time variation of overtopping water level at weir as a function of Time variation of incident and transmitted wave Time variation of incident and transmitted wave Conceptual layout of Bogue Banks. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Special Report

Author: Coastal Engineering Research Center (U.S.)

Publisher: N.A


Category: Coasts

Page: N.A

View: 8452

Physical modelling in coastal engineering

Proceedings of an international conference, Newark, Delaware, August 1981

Author: R.A. Dalrymple

Publisher: Routledge

ISBN: 1351424637

Category: Technology & Engineering

Page: 288

View: 6444

Coastal engineering is a field which has grown in importance over the last forty years as mankind has utilised and become dependent on the coastlines of the world to a greater extent. The activities in the field include the study of wave dynamics, shoreline erosion and protection, harbor and breakwater design, dredging technology, estuary mechanics and storm surge calculations, as well as offshore structural design. In all of these areas the level of actvity is high and the state of art has imporved dramatically since the 1940's. An important aspect of all these areas of research is the use of model studies. This volume consists of a number of papers which cover various aspects of physical modelling in coastal engineering, including the generation of waves in the laboratory, the modelling of sediment transport and the application to various engineering problems. The intent is to provide the reader with an overview of the research actvities of indviduals who represent major laboratories in their countries: to include Denmark, Scotland, Canada, the People's Republic of China, England, the Netherlands and the U.S.

R & D Abstracts

Author: Technology Reports Centre (Great Britain)

Publisher: N.A


Category: Reference

Page: N.A

View: 5748

Proceedings of Coastal Structures '83

A Specialty Conference on the Design, Construction, Maintenance, and Performance of Coastal Structures, March 9-11, 1983, Arlington, Virginia

Author: J. Richard Weggel

Publisher: Amer Society of Civil Engineers

ISBN: 9780872623538

Category: Technology & Engineering

Page: 1012

View: 4712

EIS Cumulative

Author: N.A

Publisher: N.A


Category: Environmental impact statements

Page: N.A

View: 6043

Healing Appalachia

Sustainable Living Through Appropriate Technology

Author: Albert J. Fritsch,Paul Gallimore

Publisher: University Press of Kentucky

ISBN: 9780813191775

Category: Architecture

Page: 435

View: 3632

Healing Appalachia is the first book to apply "appropriate technology," or the simplest level of technology that can effectively achieve the desired result, specifically to the Appalachian region. The authors examine thirty low-cost, people-friendly, and environmentally benign appropriate technologies that are concerned with such issues as food preservation, land use, shelter, and transportation. They pay close attention to the practicality of each technique according to affordability, ease of use, and ecological soundness. Details on construction and maintenance and resources for locating further information are included, making this an essential volume for everyone who cares about the future of Appalachia.

PMP® Exam Practice Test and Study Guide, Ninth Edition

Author: J. LeRoy Ward, PMP, PgMP,Ginger Levin

Publisher: CRC Press

ISBN: 1138000620

Category: Business & Economics

Page: 536

View: 1541

PMP® Exam: Practice Test and Study Guide, Ninth Edition uses self-study to help readers increase their chances of passing the PMP certification exam the first time. This spiral-bound edition includes 40 multiple-choice practice questions in each of the ten knowledge areas and in the professional and social responsibilities domain. It presents a 200-question practice test that simulates the actual PMP exam, fully referenced answers keyed to the five project management process groups, and a study matrix to help readers key in on areas that require further study.

Fluid Mechanics

Author: Frank Mangrom White,Rhim Yoon Chul

Publisher: N.A

ISBN: 9789814720175

Category: Fluid mechanics

Page: 773

View: 5193

Im freien Fall -

Vom Versagen der Märkte zur Neuordnung der Weltwirtschaft

Author: Joseph Stiglitz

Publisher: Siedler Verlag

ISBN: 3641040701

Category: Business & Economics

Page: 512

View: 4632

Das Plädoyer des Nobelpreisträgers für eine neue globale Wirtschaftspolitik Der freie Fall der Weltwirtschaft begann im Herbst 2008 mit dem Zusammenbruch der Investment-Bank Lehman Brothers. Die Finanz- und Wirtschaftskrise, die wir seither erleben, ist die schlimmste seit den 1930er Jahren. In seinem neuen Buch fragt Wirtschaftsnobelpreisträger Joseph Stiglitz, wie es dazu kommen konnte – und erklärt, wie wir solche Katastrophen in Zukunft verhindern können. Mit der Wirtschaftskrise hat sich die jahrzehntelang herrschende Wirtschaftsdoktrin selbst entzaubert: Falsche Anreize, entfesselte Märkte und eine ungerechte Verteilung des Reichtums haben die Welt an den Rand des Abgrunds geführt. Für Joseph Stiglitz ist klar: Ein »Weiter so« kann es nicht geben. Statt mit hektischen Rettungsmaßnahmen die eigene, nationale Wirtschaft zu retten und danach wieder zur Tagesordnung überzugehen, müssen wir diesen kritischen Moment nutzen, um eine neue globale Wirtschafts- und Finanzpolitik zu schaffen. Joseph Stiglitz beschreibt in seinem neuen Buch, wie solch eine krisenfeste und gerechtere Wirtschaftsordnung aussehen könnte. Neben einer besseren Regulierung der Finanzmärkte und einer aktiveren Rolle des Staates in der Wirtschaft, müssen wir vor allem dafür Sorge tragen, weltweit Arbeitsplätze zu sichern und den Wohlstand gerechter zu verteilen.