ASME B31.9 2020

$98.04

ASME B31.9 – 2020 Building Services Piping

Published By	Publication Date	Number of Pages
ASME	2020	86

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Description

ASME has been defining piping safety since 1922. ASME B31.9 contains rules for the piping in industrial, institutional, commercial, and public buildings, and multi-unit residences, which does not require the range of sizes, pressures, and temperatures covered in B31.1. ASME B31.9 prescribes requirements for the design, materials, fabrication, installation, inspection, examination, and testing of piping systems for building services. It includes piping systems in the building or within the property limits. It joins with ASME’s many other safety standards governing the building and construction industry, including the A17 series on elevators and escalators; the B30 series on cranes, hoists and lifts; and the A112 series on plumbing. B31.9 also serves as a companion to ASME’s other B31 codes on piping systems. Together, they remain essential references for anyone engaged with piping. Key changes to this revision include the addition of allowable stresses for (austenitic) stainless steels to TableI-1, and revisions to references in Mandatory Appendix III. Careful application of these B31 codes will help users to comply with applicable regulations within their jurisdictions, while achieving the operational, cost and safety benefits to be gained from the many industry best-practices detailed within these volumes. Intended for designers, owners, regulators, inspectors, and manufacturers of industrial, institutional, commercial, and public building pipelines.

PDF Catalog

PDF Pages	PDF Title
4	CONTENTS
7	FOREWORD
8	ASME B31 COMMITTEE ROSTER
10	CORRESPONDENCE WITH THE B31 COMMITTEE
12	INTRODUCTION
14	ASME B31.9-2020 SUMMARY OF CHANGES
16	Chapter I Scope and Definitions 900 GENERAL 900.1 Scope
17	Figures Figure 900.1.2 Code Jurisdictional Limits for Piping — Drum-Type Boilers
18	900.2 Terms and Definitions
22	900.3 Nomenclature
24	Chapter II Design PART 1 CONDITIONS AND CRITERIA 901 DESIGN CONDITIONS 901.1 General 901.2 Pressure 901.3 Temperature 901.4 Ambient Influences 901.5 Dynamic Effects 901.6 Thermal Expansion and Contraction Loads 902 DESIGN CRITERIA 902.1 General 902.2 Pressure–Temperature Design Criteria for Piping Components
25	902.3 Allowable Stresses and Other Stress Limits
26	902.4 Allowances PART 2 PRESSURE DESIGN OF PIPING COMPONENTS 903 CRITERIA FOR PRESSURE DESIGN OF PIPING COMPONENTS 904 PRESSURE DESIGN OF COMPONENTS 904.1 Straight Pipe Tables Table 902.4.3 Joint Factors, E
27	904.2 Curved and Mitered Segments of Pipe Figure 904.2.2 Nomenclature for Miter Joints Table 904.2.1 Pipe Thickness for Bends
28	904.3 Branch Connections 904.4 Closures
29	904.5 Pressure Design of Flanges and Blanks 904.6 Reducers 904.7 Pressure Design of Other Pressure-Containing Components PART 3 SELECTION AND LIMITATION OF COMPONENTS 905 PIPE 905.1 General 905.2 Specific Limitations
30	906 FITTINGS, BENDS, AND INTERSECTIONS 906.1 Fittings 906.2 Bends and Miter Joints 906.3 Limitations on Fittings 906.4 Thermowells 907 VALVES 907.1 General 907.2 Marking 908 FLANGES, BLANKS, GASKETS, AND BOLTING 908.1 General 908.2 Flange Facings 908.3 Gaskets 908.4 Bolting PART 4 SELECTION AND LIMITATION OF JOINTS 910 PIPING JOINTS 911 WELDED JOINTS 911.1 Metallic Pipe
31	911.2 Nonmetallic Pipe 912 FLANGED JOINTS 913 MECHANICAL AND PROPRIETARY JOINTS 913.1 Limitations on Mechanical and Proprietary Joints 914 THREADED JOINTS 914.1 Acceptable Types 914.2 Limitations on Threaded Joints 915 FLARED, FLARELESS, AND COMPRESSION JOINTS 916 BELL AND SPIGOT JOINTS 916.1 Caulked or Leaded Joints 916.2 Push-Type Elastomer Gasket 917 BRAZED AND SOLDERED JOINTS 917.1 General 917.2 Brazed Joints
32	917.3 Soldered Joints PART 5 EXPANSION, FLEXIBILITY, AND SUPPORT 919 EXPANSION AND FLEXIBILITY 919.1 General 919.2 Concepts 919.3 Properties for Analysis Table 917.3 Rated Internal Working Pressures, psig, of Joints Made With Copper Water Tube and Solder Joint Fittings
33	Table 919.3.1 Moduli of Elasticity and Thermal Expansion Coefficients
35	919.4 Analysis, Metallic Piping 919.5 Movements 919.6 Cold Spring 919.7 Reactions 920 LOADS ON PIPE-SUPPORTING ELEMENTS 920.1 General
36	920.2 Test Loads 921 DESIGN OF PIPE-SUPPORTING ELEMENTS 921.1 General 921.2 Fixtures
37	Figure 921.1.3-1 Support Spans for Standard Wall Steel Pipe
38	Figure 921.1.3-2 Support Spans for Copper and Thermoplastic Pipe
39	921.3 Structural Attachments 921.4 Supplemental Steel Table 921.2.2 Capacities of Threaded ASTM A36 Steel Rods
40	921.5 Attachments to Concrete 921.6 Supporting Structures PART 6 SYSTEMS 922 DESIGN REQUIREMENTS PERTAINING TO SPECIFIC PIPING SYSTEMS 922.1 Pressure-Reducing Systems 922.2 Steam Trap Piping 922.3 Fuel Oil Piping
42	Chapter III Materials 923 MATERIALS — GENERAL REQUIREMENTS 923.1 Materials and Specifications 923.2 Limitations on Specific Metals 923.3 Limitations on Specific Nonmetals
43	923.4 Coatings and Linings 923.5 Deterioration in Service
44	Chapter IV Component Requirements and Standard Practices 926 DIMENSIONS AND RATINGS OF COMPONENTS 926.1 Standard Piping Components 926.2 Standard Practices 926.3 Nonstandard Piping Components 926.4 Abbreviations
45	Table 926.1 Component Standards and Specifications
50	Table 926.2 Standard Practices
51	Chapter V Fabrication, Assembly, and Erection 927 WELDED FABRICATION OF METALS 927.1 General 927.2 Materials 927.3 Preparation 927.4 Rules for Welding
52	Figure 927.4.3-1 Fillet Weld Size
53	Figure 927.4.3-2 Minimum Weld Size, Setback, and Depth of Insertion for Slip-On and Socket Weld Flanges Figure 927.4.3-3 Minimum Welding Dimensions for Socket-Welding Components Other Than Flanges
54	927.5 Qualification 927.6 Qualification Requirements Figure 927.4.5-1 Acceptable Welds for Flat Heads Figure 927.4.5-2 Unacceptable Welds for Flat Heads
55	Figure 927.4.6-1 Typical Weld Branch Connections Figure 927.4.6-2 Typical Weld Details
56	Figure 927.4.6-3 Integrally Reinforced Branch Connection Fitting
57	928 BRAZING AND SOLDERING OF METALS 928.1 Brazing 928.2 Soldering 929 BENDING 929.1 General 930 FORMING 930.1 General 930.2 Mechanically Formed Extruded Outlets in Copper Tube 931 HEAT TREATMENT
58	934 FABRICATION OF NONMETALS 934.1 Joining Thermoplastic Piping 934.2 Reinforced Thermosetting Resin Piping Joints 934.3 Repair of Defective Work
59	935 ASSEMBLY 935.1 General 935.2 Bolting Procedure 935.3 Bell and Spigot Joints 935.4 Threaded Piping 935.5 Flare Joints 935.6 Ferrule Bite Joints 935.7 Compression Joints 935.8 Other Mechanical and Proprietary Joints 935.9 Borosilicate Glass Piping 935.10 Equipment Connections 935.11 Cold Spring
60	935.12 Valve Installation 935.13 Repair of Defective Work
61	Chapter VI Inspection, Examination, and Testing 936 INSPECTION AND EXAMINATION 936.1 General 936.2 Required Inspection 936.3 Responsibility for Examination 936.4 Methods of Examination 936.5 Type and Extent of Required Examination 936.6 Acceptance Criteria
62	937 LEAK TESTING 937.1 General 937.2 Preparation for Testing
63	937.3 Hydrostatic Testing 937.4 Pneumatic Testing 937.5 Initial Service Leak Test
64	MANDATORY APPENDIX I STRESS TABLES
65	Table I-1 Allowable Stresses
70	Table I-2 Hydrostatic Design Stresses (HDS) and Recommended Temperature Limits for Thermoplastic Pipe
71	Table I-3 Design Stress Values for Contact Molded (Hand-Lay-Up) Pipe Made From Reinforced Thermosetting Resins
72	Table I-4 Hydrostatic Design Basis Stress for Machine-Made Thermosetting Resin Pipe
73	Table II-1 Allowable Pressures for Nonmetallic, Nonplastic Pressure Piping MANDATORY APPENDIX II ALLOWABLE PRESSURES FOR NONMETALLIC, NONPLASTIC PRESSURE PIPING
74	MANDATORY APPENDIX III REFERENCE STANDARDS
77	MANDATORY APPENDIX IV PREPARATION OF TECHNICAL INQUIRIES
78	NONMANDATORY APPENDIX A NONMANDATORY QUALITY SYSTEM PROGRAM
79	NONMANDATORY APPENDIX B SEISMIC DESIGN AND RETROFIT OF PIPING SYSTEMS B-1 PURPOSE
80	Table B-3.2.1 Seismic Design Requirements, Applicable Sections B-2 MATERIALS B-3 DESIGN
81	Table B-3.3.1 Maximum Span, ft, Between Lateral Seismic Restraints for Steel Pipe With a Yield Stress of 35 ksi, in Water Service at 70°F
82	B-4 INTERACTIONS B-5 DOCUMENTATION B-6 MAINTENANCE B-7 REFERENCES