ANSI ASCE 45-16 46-16 AND 47-16-2017 Standard Guidelines for the Design Installation and Operation and Maintenance of Urban Stormwater Systems.pdf

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1、ASCE STANDARDANSI/ASCE/EWRI45-1646-1647-16Standard Guidelines for the Design, Installation, and Operation and Maintenance of Urban Stormwater SystemsTHREE COMPLETE STANDARDSStandard Guidelines for the Design of Urban Stormwater Systems ANSI/ASCE/EWRI 45-16Standard Guidelines for the Installation of

2、Urban Stormwater Systems ANSI/ASCE/EWRI 46-16Standard Guidelines for the Operation and Maintenance of Urban Stormwater Systems ANSI/ASCE/EWRI 47-16ASCE STANDARD ANSI/ASCE/EWRI45-1646-1647-16Standard Guidelines for theDesign, Installation, andOperation and Maintenanceof Urban Stormwater SystemsThree

3、Complete StandardsStandard Guidelines for the Designof Urban Stormwater SystemsANSI/ASCE/EWRI 45-16Standard Guidelines for the Installationof Urban Stormwater SystemsANSI/ASCE/EWRI 46-16Standard Guidelines for the Operation andMaintenance of Urban Stormwater SystemsANSI/ASCE/EWRI 47-16PUBLISHED BY T

4、HE AMERICAN SOCIETY OF CIVIL ENGINEERSLibrary of Congress Cataloging-in-Publication DataNames: American Society of Civil Engineers, editor.Title: ASCE standard, ANSI/ASCE/EWRI, 45-16, 46-16, 47-16 : standard guidelines for thedesign of urban stormwater systems.Other titles: Standard guidelines for t

5、he design of urban stormwater systemsDescription: Reston, Virginia : American Society of Civil Engineers, 2017 | Includesbibliographical references and index.Identiers: LCCN 2016058532 | ISBN 9780784413319 (soft cover : alk. paper) | ISBN9780784480199 (PDF)Subjects: LCSH: Storm sewersStandardsUnited

6、 States.Classication: LCC TD665 .A79 2017 | DDC 628/.212021873dc23 LC record available athttps:/lccn.loc.gov/2016058532Published by American Society of Civil Engineers1801 Alexander Bell DriveReston, Virginia, 20191-4382www.asce.org/bookstore | ascelibrary.orgThis standard was developed by a consens

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14、Errata, if any, can be found at https:/doi.org/10.1061/9780784413319.Copyright 2017 by the American Society of Civil Engineers.All Rights Reserved.ISBN 978-0-7844-1331-9 (soft cover)ISBN 978-0-7844-8019-9 (PDF)Manufactured in the United States of America.24 23 22 21 20 19 18 17 1 2 3 4 5ASCE STANDAR

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17、ittees which are available at www.asce.org.Errata, addenda, supplements, and interpretations, if any, forthis standard can also be found at www.asce.org.This standard has been prepared in accordance with recog-nized engineering principles and should not be used without theusers competent knowledge f

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19、or risk of infringement is entirely their ownresponsibility.A complete list of currently available standards is available inthe ASCE Library (http:/ascelibrary.org/page/books/s-standards).iiiThis page intentionally left blankCONTENTSSTANDARD GUIDELINES FOR THE DESIGN OF URBAN STORMWATER SYSTEMS,ANSI

20、/ASCE/EWRI 45-16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1STANDARD GUIDELINES FOR THE INSTALLATION OF URBAN STORMWATER SYSTEMS,ANSI/ASCE/EWRI 46-16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

21、. . . . . . 61STANDARD GUIDELINES FOR THE OPERATION AND MAINTENANCE OF URBAN STORMWATER SYSTEMS,ANSI/ASCE/EWRI 47-16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85INDEX . 99Standard Guidelines for the Design, Installation, and Operation and M

22、aintenance of Urban Stormwater Systems vThis page intentionally left blankASCE STANDARD ANSI/ASCE/EWRI45-16Standard Guidelines for theDesign of Urban StormwaterSystemsThis page intentionally left blankCONTENTSPREFACE . viiACKNOWLEDGMENTS . ix1 SCOPE 11.1 Applicable Standards . . . . . . . . . . . .

23、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

24、 . . . . . 32.2 Terms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 SITE ANALYSIS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53.1 Basic Requirements . . . . . . . . . . . .

25、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53.1.1 Topography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53.1.2 Geography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53.1.3 Wa

26、ter Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53.1.4 Geology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53.1.5 Water Source. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

27、. . . . . . . . . . . . 53.1.6 Soil Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53.1.6.1 Soil Classication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53.1.6.2 Hydraulic Conductivity and Permeability. . . . . . . .

28、 . . . . . . . . . . . . . . . . . 53.1.6.3 Strata and Layers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63.1.6.4 Soil/Water Chemistry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63.1.6.5 Temperature . . . . . . . . . . . . . . . . . . . . . .

29、 . . . . . . . . . . . . . . . . . . 63.1.6.6 Soil Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63.1.7 Environmental Factors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63.1.7.1 Water Quality . . . . . . . . . . . . . .

30、. . . . . . . . . . . . . . . . . . . . . . . . . 63.1.7.2 Flooding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63.1.7.3 Wetlands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63.1.7.4 Principal or Primary Aquifers . . . .

31、 . . . . . . . . . . . . . . . . . . . . . . . . . . . 63.1.7.5 Hydrology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63.1.8 Physical Constraints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63.1.9 Land Use. . . . . . . . .

32、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63.1.10 Zoning Regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63.1.11 Other Governmental Regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

33、4 HYDROLOGY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74.1 Quantity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74.1.1 Design Points and Return Periods. . . . . . . . . . .

34、 . . . . . . . . . . . . . . . . . . . . . . . . 74.1.2 Runoff Determination Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74.1.2.1 Statistical Methods. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74.1.2.2 Regional Methods . . . . . . . .

35、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74.1.2.3 Transfer Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74.1.2.4 Rainfall Runoff Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84.1.3 Design Rainfall . . . . . . . . . .

36、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84.1.4 Rainfall Abstraction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84.1.5 Runoff Hydrographs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84.1.6 Rat

37、ional Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84.1.6.1 Assumptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84.1.6.2 Runoff Coefcient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

38、. 84.1.7 Time of Concentration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94.1.7.1 Sheet Flow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94.1.7.2 Shallow Concentrated Flow . . . . . . . . . . . . . . . . . . . . . . . . . .

39、. . . . . . 104.1.7.3 Open Channel Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Standard Guidelines for the Design of Urban Stormwater Systems iii4.1.8 Hydrograph . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104.1.9 Cal

40、ibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104.1.10 Historical Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114.2 Water Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

41、 . . . . . . . . . . . . . . . . . . 114.2.1 Pollutant Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114.2.2 Water Quality Impacts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114.3 Rainfall Runoff Computer Models .

42、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115 NONSTRUCTURAL CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135.1 Floodplains. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

43、. . . . 135.2 Wetlands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135.3 Forests and Riparian Buffers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135.4 Stream Bank Assessment . . . . . . . . . . . .

44、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135.5 Site Planning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136 SYSTEM CONFIGURATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

45、. 156.1 Collection System Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156.1.1 Pipes or Conduits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156.1.2 Inlet Structures. . . . . . . . . . . . . . . . . . . . . .

46、. . . . . . . . . . . . . . . . . . . . . . . 156.1.3 Drainage Ways. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156.1.4 Streets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156.1.5 Flow Controls . . . .

47、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156.1.6 Retention/Detention Facilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156.1.6.1 Wetlands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

48、56.1.6.2 Impoundments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156.2 Special Structures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166.2.1 Pumping Stations . . . . . . . . . . . . . . . . . . . . . . . . . . .

49、. . . . . . . . . . . . . . . . 166.2.2 Vaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166.2.3 Manholes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166.2.4 Cleanouts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166.2.5 Equipment Access Shafts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166.3 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .