1、Designation: F2021 11F2021 17 An American National StandardStandard Guide forDesign and Installation of Plastic Siphonic Roof DrainageSystems1This standard is issued under the fixed designation F2021; the number immediately following the designation indicates the year oforiginal adoption or, in the
2、case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This guide covers design and installation considerations for plastic siphonic roof drai
3、n systems for industrial, commercial,public, and residential buildings. Requirements for materials, pipe, and fittings are included.1.2 The interchangeability of pipe and fittings made by different manufacturers is not addressed in this guide. Transition fittingsfor joining pipe and fittings of diff
4、erent manufacturers is provided for in the referenced pipe and fitting specification.1.3 In referee decisions, the SI units shall be used for metric-sized pipe and inch-pound units for pipe sized in the IPS system(ANSI B36.10). In all cases, the values given in parentheses are for information only.1
5、.4 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Tra
6、de (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2D696 Test Method for Coefficient of Linear Thermal Expansion of Plastics Between 30C and 30C with a Vitreous SilicaDilatometerD1600 Terminology for Abbreviated Terms Relating to PlasticsD1785 Specification for Poly(Vinyl Chloride) (PVC) P
7、lastic Pipe, Schedules 40, 80, and 120D2661 Specification for Acrylonitrile-Butadiene-Styrene (ABS) Schedule 40 Plastic Drain, Waste, and Vent Pipe and FittingsD2665 Specification for Poly(Vinyl Chloride) (PVC) Plastic Drain, Waste, and Vent Pipe and FittingsD2751 Specification for Acrylonitrile-But
8、adiene-Styrene (ABS) Sewer Pipe and Fittings (Withdrawn 2014)3D2949 Specification for 3.25-in. Outside Diameter Poly(Vinyl Chloride) (PVC) Plastic Drain, Waste, and Vent Pipe and FittingsD3034 Specification for Type PSM Poly(Vinyl Chloride) (PVC) Sewer Pipe and FittingsD3350 Specification for Polyet
9、hylene Plastics Pipe and Fittings MaterialsE84 Test Method for Surface Burning Characteristics of Building MaterialsE814 Test Method for Fire Tests of Penetration Firestop SystemsE1966 Test Method for Fire-Resistive Joint SystemsE2393 Practice for On-Site Inspection of Installed Fire Resistive Joint
10、 Systems and Perimeter Fire BarriersF412 Terminology Relating to Plastic Piping SystemsF628 Specification for Acrylonitrile-Butadiene-Styrene (ABS) Schedule 40 Plastic Drain, Waste, and Vent Pipe With a CellularCoreF714 Specification for Polyethylene (PE) Plastic Pipe (DR-PR) Based on Outside Diamet
11、erF891 Specification for Coextruded Poly(Vinyl Chloride) (PVC) Plastic Pipe With a Cellular CoreF1901 Specification for Polyethylene (PE) Pipe and Fittings for Roof Drain Systems2.2 ANSI/ASME Standards:3A112.20.2 Qualification of Installers of Firestop Systems and Devices for Piping SystemsA112.6.4
12、Roof, Deck and Balcony Drains1 This guide is under the jurisdiction of ASTM Committee F17 on Plastic Piping Systems and is the direct responsibility of Subcommittee F17.63 on DWV.Current edition approved Aug. 1, 2011Nov. 1, 2017. Published September 2011November 2017. Originally approved in 2000. La
13、st previous edition approved in 20062011as F2021 06.F2021 11. DOI: 10.1520/F2021-11.10.1520/F2021-17.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Do
14、cument Summary page on the ASTM website.3 Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http:/www.ansi.org.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes ha
15、ve been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official do
16、cument.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1A112.6.9 Siphonic Roof DrainsB36.10 Standard Dimensions of Steel Pipe (IPS)2.3 ANSI/UL Standard:UL-1479 (see Test
17、Method E814)32.4 Other References:International Building Code (IBC)4International Plumbing Code (IPC)4Uniform Plumbing Code (UPC)5NFPA 5000 Building Code63. Terminology3.1 DefinitionsTerms and abbreviations as described in Terminologies F412 and D1600, respectively, shall apply in this guide.General
18、 terminology pertaining to roof drains as described in ANSI/ASME A112.6.4 and ASME A112.6.9 shall also apply in thisguide.3.2 Definitions of Terms Specific to This Standard:3.2.1 crown, nthe elevation of the top of a pipe inner wall.3.2.2 drain, nany pipe which carries rain water, waste water or wat
19、erborne wastes in a building drainage system.3.2.3 drainage system, nincludes all the piping within public or private premises, which conveys sewage, rain water, or otherliquid wastes to a legal point of disposal. It does not include the mains of public sewer treatment or disposal plants.3.2.4 sipho
20、nic roof drain, na roof drain with a fixed device allowing water to enter without the ingress of air that sustains anegative differential fluid head within the pipe system thereby inducing flow without pipe gradient (pitch).4. Significance and Use4.1 The information provided in this standard guide i
21、s intended for use by designers and specifiers of siphonic roof drainagesystems and their related components. Specifically, this guide addresses the use and limitations of plastic pipe and fittings insiphonic roof drainage systems where internal operating pressures are typically sub-atmospheric.5. P
22、rocedure5.1 GeneralRefer to the governing plumbing code (for example, IPC, UPC) to determine if plastic pipe and fittings arepermitted for building roof drainage systems in the project jurisdiction. When permitted, select the appropriate material as listedin the plumbing code that is approved for ro
23、of drainage applications. Use of plastic pipe materials not approved by the governingcode must be approved by the local authority having jurisdiction. Regardless of material approval, use plastic pipe materials onlywhen not prohibited by fire resistance requirements of the governing building code (t
24、hat is, NFPA5000, IBC, UPC). Pipe materialsmust also meet the fire resistive requirements as specified in the building code and as determined by Test Method E84.5.1.1 Specific types of PVC pipe appropriate for siphonic roof drainage systems include, but are not limited to: SpecificationsD2665, D2949
25、, and D3034. When pipe diameters of 212-in. (64-mm) must be specified, Specification D1785 plain end pressurepipe mayshall be used as it shares the same manufacturing standards as Specification D2665.5.1.2 Specific types of ABS pipe include but are not limited to: D2661and D2751.5.1.3 Specific types
26、 of PE pipe include but are not limited to: D3350, F714, and F1901.5.2 Pipe Wall Thickness and CompositionRefer to the governing plumbing code for the pipe wall thicknesses specified forapproved pipe materials. Cellular-core plastic pipe (for example, Specifications F628 and F891) shouldshall be avo
27、ided unless therespective pipe product manufacturer can certify by testing that the pipe product can withstand full vacuum internally withoutcollapse. Generally, solid Solid wall plastic pipe of wall thickness of Schedule 40 or greater (including the equivalent SDRthickness) is adequate for siphonic
28、 roof drain system sub-atmospheric pressure regimes. Pipe wall thicknesses less than Schedule40 shouldshall not be specified.5.3 Hangers, Supports and BracingRefer to the governing plumbing code for pipe support requirements. If local codes do notaddress pipe support, support plastic pipe every four
29、 feet on center and at every change in direction. Brace plastic pipe with lateralrestraints every thirty feet on center and at every change in direction for hanger rods longer than 18 inches.5.4 Thermal Displacement and Expansion Fittings:5.4.1 The normal mode of thermal transition in siphonic roof
30、drainage systems is typically from room temperature to aminimum of about 40F (4.4C) minimum resulting in an overall contraction of plastic piping in siphonic roof drainage systems.4 Available from International Code Council (ICC), 500 New Jersey Ave., NW, 6th Floor, Washington, DC 20001, http:/www.i
31、ccsafe.org.5 Available from International Association of Plumbing and Mechanical Officials, 4755 E. Philadelphia St., Ontario, CA 91761, http:/www.iapmo.org.6 Available from National Fire Protection Association (NFPA), 1 Batterymarch Park, Quincy, MA 02169-7471, http:/www.nfpa.org.F2021 172This occu
32、rs generally when the warm pipe in a heated building is filled with a cold rain. Therefore, a total temperature differenceof 50F (28C)(10C) shall be assumed in calculating overall changes in pipe length due to thermal contraction.5.4.2 Obtain the rate of thermal expansion from pipe manufacturer data
33、 as determined by Test Method D696. In the absenceof manufacturer data, use the following rates as expressed in ft/ft/F (cm/cm/C). ABS: 5.7 10-5 (10.3 10-5); PVC: 3.0 10-5 (5.2 10-5); HDPE: 10.0 10-5 (18.0 10-5).5.4.3 Specify appropriate telescopic expansion fittings to account for pipe thermal disp
34、lacement. This is particularly importantfor pipe sections that pass through fire rated walls where movement can pull apart fire stopping assemblies. Such telescopingexpansion joints must be able to withstand negative internal pressure without air infiltration. Expansion joints used in pump suctionap
35、plications are recommended5.5 Fire Stopping:5.5.1 Plastic piping passing through fire rated walls and floors must be fire stopped with appropriate and approved fire stoppingassemblies as tested and certified under Test Method E814 (ANSI/UL 1479). Other fire resistive joint systems must be installeda
36、nd inspected in accordance with Test Method E1966 and Practice E2393. Fire stop assemblies should be installed by qualifiedpersonnel as specified in ANSI/ASME A112.20.2.5.5.2 Penetrations at fire rated penetrations should be treated as anchor points for the pipe system when determining theplacement
37、of expansion joints to prevent thermal displacement at these locations.5.6 Connection to Roof DrainsRefer to ANSI/ASME A112.6.9 for information related to the method(s) of connection ofpiping to siphonic roof drain outlets. In general, a A threaded connection is preferred by means of an appropriate
38、thread by socketadaptor coupling.5.7 Roughness Value:5.7.1 Energy loss calculations for siphonic roof drainage systems shouldshall be based on the absolute roughness value for thespecified pipe material. Evaluation of system performance for both the “new” and the “aged” condition of the pipe inner w
39、all isrecommended.5.7.2 For the “new” pipe condition, use an absolute roughness value of 0.000005 ft (0.00152 mm) is recommended.mm).5.7.3 For the “aged” pipe condition use an absolute roughness value of 0.00002 ft (0.0061 mm) is recommended.mm).5.8 Reducers and Increasers:5.8.1 The increase or redu
40、ction of pipe diameter in vertical orientations mayshall be provided by either concentric or eccentricreducer fittings.5.8.2 The increase of pipe diameter in horizontal orientations shouldshall be provided with eccentric reducer fittings with the“flat” side of the fitting oriented with the crown of
41、the pipe (that is, match crowns).5.9 Inspection:5.9.1 Verify the pipe and fitting specification(s) of the installed pipe to ensure the specified pipe product and wall thickness havebeen installed.5.9.2 Ensure piping has been supported and braced as specified by the designer.5.9.3 Verify that specifi
42、ed expansion fittings and fire stopping assemblies have been installed.5.9.4 Verify that piping has been connected to all roof drains.6. Test Methods6.1 GeneralThere are no operational test methods used for installed siphonic roof drainage systems. Only pipe integritytesting by hydrostatic pressure
43、is necessary.6.2 Hydrostatic System Testing:6.2.1 At a minimum, pressure test the drainage system piping in accordance with the procedure(s) in the governing plumbingcode for drainage systems.6.2.2 The designer mayshall specify a pressure test method more stringent than the plumbing code minimum as
44、operatingpressures necessitate.6.2.3 Do not use compressed air for the pressure testing of plastic piping systems.7. Keywords7.1 ABS; DWV; pipe fittings; plastic pipe; polyethylene; polyvinylchloride; siphonic roof drainageF2021 173SUMMARY OF CHANGESCommittee F17 has identified the location of selec
45、ted changes to this standard since the last issue(F202106)11) that may impact the use of this standard. (Approved August 1, 2011.)(1) SectionsSection 2.12, 5.1.2 anddeleted D2751 5.1.3 were edited to remove references to expired standards.reference, standardwas withdrawn in 2014.(2) 5.1.1, removed p
46、assive language and changed may to shall(3) 5.1.2, reworded and deleted D2751 reference.(4) 5.2, removed passive language, changed should to shall, and remove Generally,.(5) 5.4.1, reworded and rounded F to C conversion to whole values per D618.(6) 5.6, reworded.(7) 5.7.2, reworded.(8) 5.7.3, reword
47、ed.(9) 5.8.1, removed passive language and changed may to shall.(10) 5.8.2, removed passive language and changed should to shall.(11) 6.2.2, removed passive language and changed may to shall.ASTM International takes no position respecting the validity of any patent rights asserted in connection with
48、 any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible techni
49、cal committee and must be reviewed every five years andif not revised, either reapproved or withdrawn.Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address
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