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 and health practices and determine the applica-bility of regulatory limitations prior to use.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 direction of air flow.2.1.3 flat ovalcr
6、oss 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 smoothly curved type of offset. The in
7、sidecurve 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 changes the size but not thecross-section ty
8、pe 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 providemore uniform velocity and distribution
9、 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 transitionfitting that changes the cross-section typeo
10、f 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 vaned turna fitting containing vanes th
11、at 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 Out indicates the length of the strai
12、ght portion ofa vaned turn on the “air out-flow” side.BDistance from the intersection of the center lines of abranch and the main duct to the end of the main duct.CYDistance between centers of a Y branch.DDepth of a part.DBDepth of a branch.1This practice is under the jurisdiction of ASTM Committee
13、F25 on Ships andMarine Technology and is the direct responsibility of Subcommittee F25.11 onMachinery and Piping Systems.Current edition approved Oct. 1, 2013. Published October 2013. Originallyapproved in 1986. Last previous edition approved in 2007 as F1005 - 91(2007).DOI: 10.1520/F1005-91R13.2Dra
14、wing: Naval Sea Systems Command (NAVSEA) NAVSHIPS S3801-385260 Vanes Channels Ventilation Vane, available from Commander, PortsmouthNaval Shipyard, Naval Engineering Drawing Support Activity, Code 202.2,Portsmouth, NH 03804-5000.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West
15、Conshohocken, PA 19428-2959. United States1DIADiameter 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 turn.LLength of a part.LBLength of a branch from the en
16、d 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 first splitter at V extension.RV2Radius of second splitt
17、er 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.R3Radius of third splitter.S1Distance of first splitte
18、r 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 offset. Normally TR is equal to the width (of arectan
19、gular 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 a transition or reducer toward the right alongthe X a
20、xis, 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 toward the bottom ofthe Y axis, looking down from above
21、.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 parameters shall be used to defineventilation ductwork shap
22、es.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 aredescribed by Figs. 1-41. The shapes have been divided
23、 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.4.1.1.5 Reducer.4.1.1.6 Transition and bellmouth.4.1.1.7 Branch.4.1.2 Each sketch is identified by the standard name andindicates the design parameters needed for fabrication
24、.TABLE 1 HVAC Standard Nomenclature and Numbering System1. Straight:1.1 Straight-round1.2 Straight-flat oval1.3 Straight-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 split
25、ters2.4.1 Offset-ogee-without splitters2.4.2 Offset-ogee-with splitters2.5.1 Offset-rectangular reducing-withoutsplitters2.5.2 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
26、.2 Elbow-rectangular-with splitters3.4.1 Elbow-rectangular reducing-withoutsplitters3.4.2 Elbow-rectangular reducing-with 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-f
27、lat oval5.3 Reducer-rectangular6. Transition and Bellmouth:6.1 Transition-flat oval to round6.2 Transition-rectangular to 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.
28、 Branch:7.1.1 Branch-round-on equal diameter round7.1.2 Branch-round-on larger diameter round7.1.3 Branch-round-on round 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 re
29、ctangular straight7.2.2 Branch-rectangular-on rectangular reducerF1005 91 (2013)24.2 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 NumberThe primary numbers 1 through 7correspond to the seve
30、n 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,is used when further differentiation is required. A sum
31、mary 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 1.3Straight-RectangularFIG. 4 Shape 2.1Offset-RoundF1005
32、 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 Shape 2.4.1Offset-Ogee-Without SplittersFIG. 10 Shape 2.
33、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 Oval-Long AxisFIG. 15 Shape 3.2.2Elbow-Flat Oval-Short A
34、xisFIG. 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-tersFIG. 20 Shape 3.5.1Elbow-Rectangular Transition-Witho
35、utSplittersF1005 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 bottom, or both, of this shape may be slanted.FIG. 23 Shap
36、e 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 both, of this shape may be slanted.FIG. 26 Shape 6.1T
37、ransition-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-Rectangular to Flat OvalF1005 91 (2013)14NOTE 1Top or bottom,
38、 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. 32 Shape 6.6.2Bellmouth-RectangularFIG. 33 Shape 7.1.
39、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 7.1.5Branch-Round-On Rectangular ReducerF1005 91 (2013)1
40、7NOTE 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 the validity of any patent rights asserted in connect
41、ion 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 standard is subject to revision at any time by the responsibl
42、e 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 Headquarters. Your comments will receive careful cons
43、ideration 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.This standard is copyrighted by ASTM International, 100 B
44、arr 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), 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 ASTM website (www.astm.org/COPYRIGHT/).FIG. 40 Shape 7.2.1Branch-Rectangular-On RectangularStraightFIG. 41 Shape 7.2.2Branch-Rectangular-On Rectangular Re-ducerF1005 91 (2013)19
