ASME A112.6.9 2022

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ASME A112.6.9-2022/CSA B79.9:22 Siphonic roof drains

Published By	Publication Date	Number of Pages
ASME	2022

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Description

This Standard specifies minimum requirements for the design, installation, examination, and testing of siphonic roof drains. It includes definitions of terms and parameters involved in the design of siphonic drainage systems.

PDF Catalog

PDF Pages	PDF Title
1	ASME A112.6.9-2022/CSA B79.9:22, Siphonic roof drains
3	Standards Update Service
10	ASME A112 Standards Committee on Plumbing Materials and Equipment
14	ASME A112.6.9 Project Team on Roof Drains
15	CSA Technical Committee on Drains and Interceptors
19	ASME/CSA Harmonization Task Group on Drains
21	Preface
23	1 Scope 1.1 Inclusions 1.2 Exclusions 1.2.1 Applicability of roof drain standards 1.2.2 Conventional roof drains 1.3 Intent of this Standard 1.4 Terminology
24	1.5 Units of measure 1.5.1 General 1.5.2 U.S. gallons 1.6 Alternatives 2 Reference publications
25	3 Definitions and abbreviations 3.1 Definitions 3.2 Abbreviations 3.3 Symbols
26	4 Materials 5 Design and testing 5.1 General 5.1.1 Conventional drain adaptation 5.1.2 Verification 5.2 Design of siphonic drains 5.2.1 Design principles 5.2.2 Materials and components 5.2.3 Flow path 5.3 Testing of siphonic roof drains 5.3.1 Applicability
27	5.3.2 Test purpose 5.3.3 Performance characteristics 5.3.4 Head elevation 5.4 Single resistance value (loss coefficient) determination 5.4.1 Test apparatus 5.4.2 Water supply 5.4.3 Flow rate measurement
28	5.4.4 Water depth measurement 5.4.5 Roof drain installation 5.4.6 Standpipe discharge configuration 5.4.7 Standpipe pressure measurement 5.4.8 Flow rate determination procedure 5.4.9 Number of readings 5.4.10 Calculations
30	5.4.11 Drain accessories 5.5 Water depth versus flow test stability, and speed of prime 5.5.1 Steady-state condition 5.5.2 Test apparatus description 5.5.3 Standpipe diameter
31	5.5.4 The fully primed flow rate 5.5.5 Maximum flow 5.5.6 Head elevation versus flow 6 Markings 6.1 Marking requirements 6.2 Additional markings 6.3 Permanent markings 6.4 Publication of single resistance value
34	Annex A (informative)Prefabricated vertical geocomposite drains and plastic siphonic roof drains