1、Designation: F1005 91 (Reapproved 2013) An American National StandardStandard Practice forHVAC Duct Shapes; Identification and Description of DesignConfiguration1This standard is issued under the fixed designation F1005; the number immediately following the designation indicates the year oforiginal
2、adoption or, in the 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. Scope1.1 This practice covers the identification of design configu-rations an
3、d descriptive nomenclature for sheetmetal HVACductwork shapes frequently used in shipbuilding. This practicealso covers parametric dimensions of these shapes. (See Table1.)1.2 This practice does not cover the location of seams orjoints within a shape or the method of joining shapes together.1.3 Sinc
4、e this practice is not measurement sensitive, it isapplicable whether inch-pound or SI metric dimensions areused.1.4 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate sa
5、fety, health and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of
6、 International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Terminology2.1 Definitions of Terms Specific to This Standard:2.1.1 branchportion of a duct system connection to amain duct.2.1.2 elbowa fitting used to change d
7、irection of air flow.2.1.3 flat ovalcross section that has flat sides and semicir-cular ends.2.1.4 long axis of flat oval curved so that the flat sides of theflat oval remain in a plane.2.1.5 offsetfitting that changes the location of the ductwith the line of the duct remaining parallel.2.1.6 ogeea
8、smoothly curved type of offset. The insidecurve of each end is tangent to the outside curve of the otherend.2.1.7 radius cornercross section that is generallyrectangular, but with the corners softened to a radius.2.1.8 rectangularrectangular or square cross section.2.1.9 reducera fitting that change
9、s the size but not thecross-section type of duct.2.1.10 roundcircular cross section.2.1.11 short axis of flat ovalcurved so that the flat sides ofthe flat oval correspond to the curve.2.1.12 splitterinternal part of some elbows and offsets;sometimes required in diverging transitions. Used to provide
10、more uniform velocity and distribution of air flow. The numberand location of splitters is determined by calculation or from anomograph.2.1.13 straightduct that remains constant in cross sectionand size throughout its length.2.1.14 throatwrapper around the inside of a fitting.2.1.15 transitionfittin
11、g that changes the cross-section typeof the duct.2.1.16 vaneinternal part of vaned turns. Used to providemore uniform velocity of air flow. Configuration, number, andlocation of vanes is determined from drawing, NAVSHIPS No.S3801-385260.2The direction of airflow must be marked onvaned turns.2.1.17 v
12、aned turna fitting containing vanes that is used tochange the direction of air flow.2.2 Variables Specific to This Standard:AAngle. Included angle of an elbow, branch, vaned turn,or slant-top fitting.AIAir In indicates the length of the straight portion of avaned turn in the “air in-flow” side.AOAir
13、 Out indicates the length of the straight portion ofa vaned turn on the “air out-flow” side.1This practice is under the jurisdiction of ASTM Committee F25 on Ships andMarine Technology and is the direct responsibility of Subcommittee F25.11 onMachinery and Piping Systems.Current edition approved Oct
14、. 1, 2013. Published October 2013. Originallyapproved in 1986. Last previous edition approved in 2007 as F1005 91 (2007).DOI: 10.1520/F1005-91R13.2Drawing: Naval Sea Systems Command (NAVSEA) NAVSHIPS S3801-385260 Vanes Channels Ventilation Vane, available from Commander, PortsmouthNaval Shipyard, Na
15、val Engineering Drawing Support Activity, Code 202.2,Portsmouth, NH 03804-5000.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standa
16、rdization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.1BDistance from the intersection of the center lines of abranch and the main duct to the en
17、d of the main duct.CYDistance between centers of a Y branch.DDepth of a part.DBDepth of a branch.DIADiameter of a part.DIABDiameter of a branch.DIA1Major diameter of a part.DIA2Minor diameter of a part.D1Major depth of a part.D2Minor depth of a part.FFlat section that softens the corner of a vaned t
18、urn.LLength of a part.LBLength of a branch from the end of the branch to thepoint where the centerline of the branch intersects the center-line of the main duct.1.1Major length of a Y branch.1.2Minor length of a Y branch.OOffset in one direction.RRadius of a bellmouth.RCRadius corner.RV1Radius of fi
19、rst splitter at V extension.RV2Radius of second splitter at V extension.RV3Radius of third splitter at V extension.RZ1Radius of first splitter at Z extension.RZ2Radius of second splitter at Z extension.RZ3Radius of third splitter at Z extension.R1Radius of first splitter.R2Radius of second splitter.
20、R3Radius of third splitter.S1Distance of first splitter from the outside curve of anogee offset.S2Distance of second splitter from the outside curve ofan ogee offset.S3Distance of third splitter from the outside curve of anogee offset.TRThroat radius is the radius of the inside surface of anelbow or
21、 offset. Normally TR is equal to the width (of arectangular elbow).TR1Major throat radius of a reducing offset.TR2Minor throat radius of a reducing offset.VExtension on one end of a part, opposite from Z.WWidth of a part.WBWidth of a branch.W1Major width of a part.W2Minor width of a part.X+Offset of
22、 a transition or reducer toward the right alongthe X axis, looking down from above.XOffset of a transition or reducer toward the left alongthe X axis, looking down from above.Y+Offset of a transition or reducer toward the top of theY axis, looking down from above.YOffset of a transition or reducer t
23、oward the bottom ofthe Y axis, looking down from above.ZExtension on one end of a part, opposite from V.3. Significance and Use3.1 Standard nomenclature shall be used to facilitate com-munication between designers, suppliers, and users of HVACventilation ductwork components.3.2 Standard design param
24、eters shall be used to defineventilation ductwork shapes.3.3 Standard variables for design parameters (see 2.2) areuseful in writing CAD/CAM software for automatic fabricationof ventilation ductwork shapes.4. Description of HVAC Standard Shapes4.1 The HVAC standard shapes covered by this practice ar
25、edescribed by Figs. 1-41. The shapes have been divided intoseven categories by function.4.1.1 HVAC Duct Categories:4.1.1.1 Straight.4.1.1.2 Offset.4.1.1.3 Elbow.4.1.1.4 Vaned turn.TABLE 1 HVAC Standard Nomenclature and Numbering System1. Straight:1.1 Straight-round1.2 Straight-flat oval1.3 Straight-
26、rectangular2. Offset:2.1 Offset-round2.2.1 Offset-flat oval-long axis2.2.2 Offset-flat oval-short axis2.3.1 Offset-rectangular-without splitters2.3.2 Offset-rectangular-with splitters2.4.1 Offset-ogee-without splitters2.4.2 Offset-ogee-with splitters2.5.1 Offset-rectangular reducing-withoutsplitters
27、2.5.2 Offset-rectangular reducing-with splitters3. Elbow:3.1 Elbow-round3.2.1 Elbow-flat oval-long axis3.2.2 Elbow-flat oval-short axis3.3.1 Elbow-rectangular-without splitters3.3.2 Elbow-rectangular-with splitters3.4.1 Elbow-rectangular reducing-withoutsplitters3.4.2 Elbow-rectangular reducing-with
28、 splitters3.5.1 Elbow-rectangular transition-withoutsplitters3.5.2 Elbow-rectangular transition-with splitters4. Vaned Turn:4.1 Vaned turn5. Reducer:5.1 Reducer-round5.2 Reducer-flat oval5.3 Reducer-rectangular6. Transition and Bellmouth:6.1 Transition-flat oval to round6.2 Transition-rectangular to
29、 round6.3 Transition-rectangular to flat oval6.4 Transition-rectangular to radius corner6.5 Transition-radius corner to flat oval6.6.1 Bellmouth-round6.6.2 Bellmouth-rectangular7. Branch:7.1.1 Branch-round-on equal diameter round7.1.2 Branch-round-on larger diameter round7.1.3 Branch-round-on round
30、reducer7.1.4 Branch-round-on rectangular straight7.1.5 Branch-round-on rectangular reducer7.1.6 Branch-round “Y”7.1.7 Branch-rectangular to round-“Y”7.2.1 Branch-rectangular-on rectangular straight7.2.2 Branch-rectangular-on rectangular reducerF1005 91 (2013)24.1.1.5 Reducer.4.1.1.6 Transition and b
31、ellmouth.4.1.1.7 Branch.4.1.2 Each sketch is identified by the standard name andindicates the design parameters needed for fabrication.4.2 The HVAC standard shapes are also identified bynumber for convenient reference. A modified decimal number-ing system is used for this purpose.4.2.1 Primary Numbe
32、rThe primary numbers 1 through 7correspond to the seven categories of shapes.4.2.2 Secondary NumberThe secondary number desig-nates a predominant characteristic, such as cross section thatdifferentiates a shape from other shapes in the category.4.2.3 Ternary NumberThe ternary number, when required,i
33、s used when further differentiation is required. A summary ofthis system is presented in Table 1.5. Keywords5.1 air conditioning; heating; HVAC duct configuration;HVAC ducts; HVAC duct shapes; ventilationFIG. 1 Shape 1.1Straight-RoundFIG. 2 Shape 1.2Straight-Flat Oval.F1005 91 (2013)3FIG. 3 Shape 1.
34、3Straight-RectangularFIG. 4 Shape 2.1Offset-RoundF1005 91 (2013)4FIG. 5 Shape 2.2.1Offset-Flat Oval-Long AxisFIG. 6 Shape 2.2.2Offset-Flat Oval-Short AxisF1005 91 (2013)5FIG. 7 Shape 2.3.1Offset-Rectangular-Without SplittersFIG. 8 Shape 2.3.2Offset-Rectangular-With SplittersF1005 91 (2013)6FIG. 9 Sh
35、ape 2.4.1Offset-Ogee-Without SplittersFIG. 10 Shape 2.4.2Offset-Ogee With SplittersF1005 91 (2013)7FIG. 11 Shape 2.5.1Offset-Rectangular Reducing-Without SplittersFIG. 12 Shape 2.5.2Offset-Rectangular Reducing-With SplittersF1005 91 (2013)8FIG. 13 Shape 3.1Elbow-RoundFIG. 14 Shape 3.2.1Elbow-Flat Ov
36、al-Long AxisFIG. 15 Shape 3.2.2Elbow-Flat Oval-Short AxisFIG. 16 Shape 3.3.1Elbow-Rectangular-Without SplittersFIG. 17 Shape 3.3.2Elbow-Rectangular-With SplittersF1005 91 (2013)9FIG. 18 Shape 3.4.1Elbow-Rectangular Reducing-WithoutSplittersFIG. 19 Shape 3.4.2Elbow-Rectangular Reducing-With Split-ter
37、sFIG. 20 Shape 3.5.1Elbow-Rectangular Transition-WithoutSplittersF1005 91 (2013)10FIG. 21 Shape 3.5.2Elbow-Rectangular Transition-With SplittersNOTE 1Detail of vane fabrication and installation given by drawing, NAVSHIPS No. S3801-385260.2FIG. 22 Shape 4.1Vaned TurnF1005 91 (2013)11NOTE 1Top or bott
38、om, or both, of this shape may be slanted.FIG. 23 Shape 5.1Reducer-RoundNOTE 1Top or bottom, or both, of this shape may be slanted.FIG. 24 Shape 5.2Reducer-Flat OvalF1005 91 (2013)12NOTE 1Top or bottom, or both, of this shape may be slanted.FIG. 25 Shape 5.3Reducer-RectangularNOTE 1Top or bottom, or
39、 both, of this shape may be slanted.FIG. 26 Shape 6.1Transition-Flat Oval to RoundF1005 91 (2013)13NOTE 1Top or bottom, or both, of this shape may be slanted.FIG. 27 Shape 6.2Transition-Rectangular to RoundNOTE 1Top or bottom, or both, of this shape may be slanted.FIG. 28 Shape 6.3Transition-Rectang
40、ular to Flat OvalF1005 91 (2013)14NOTE 1Top or bottom, or both, of this shape may be slanted.FIG. 29 Shape 6.4Transition-Rectangular to Radius CornerNOTE 1Top or bottom, or both, of this shape may be slanted.FIG. 30 Shape 6.5Transition-Radius Corner to Flat OvalFIG. 31 Shape 6.6.1Bellmouth-RoundFIG.
41、 32 Shape 6.6.2Bellmouth-RectangularFIG. 33 Shape 7.1.1Branch-Round-On Equal Diameter RoundF1005 91 (2013)15FIG. 34 Shape 7.1.2Branch-Round-On Larger Diameter RoundFIG. 35 Shape 7.1.3Branch-Round-On Round ReducerF1005 91 (2013)16FIG. 36 Shape 7.1.4Branch-Round-On Rectangular StraightFIG. 37 Shape 7.
42、1.5Branch-Round-On Rectangular ReducerF1005 91 (2013)17NOTE 1V extensions may be added to the branches.FIG. 38 Shape 7.1.6Branch-Round-”Y”NOTE 1V extensions may be added to the branches.FIG. 39 Shape 7.1.7Branch-Rectangular to Round “Y”F1005 91 (2013)18ASTM International takes no position respecting
43、 the validity of any patent rights asserted in connection with 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 standar
44、d is subject to revision at any time by the responsible technical 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
45、 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 shown below.Thi
46、s standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax),
47、 or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 40 Shape 7.2.1Branch-Rectangular-On RectangularStraightFIG. 41 Shape 7.2.2Branch-Rectangular-On Rectangular Re-ducerF1005 91 (2013)19
