US3714752A - Reinforcing and supporting saddle for c-shaped sheet-metal beams - Google Patents

Reinforcing and supporting saddle for c-shaped sheet-metal beams Download PDF

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Publication number
US3714752A
US3714752A US00075393A US3714752DA US3714752A US 3714752 A US3714752 A US 3714752A US 00075393 A US00075393 A US 00075393A US 3714752D A US3714752D A US 3714752DA US 3714752 A US3714752 A US 3714752A
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US
United States
Prior art keywords
saddle
flange
web
lip
reinforcing
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US00075393A
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English (en)
Inventor
G Ratliff
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United States Steel Corp
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Steel Corp
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Publication date
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Publication of US3714752A publication Critical patent/US3714752A/en
Assigned to USX CORPORATION, A CORP. OF DE reassignment USX CORPORATION, A CORP. OF DE MERGER (SEE DOCUMENT FOR DETAILS). Assignors: UNITED STATES STEEL CORPORATION (MERGED INTO)
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Expired - Lifetime legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B7/00—Roofs; Roof construction with regard to insulation
    • E04B7/02—Roofs; Roof construction with regard to insulation with plane sloping surfaces, e.g. saddle roofs
    • E04B7/022—Roofs; Roof construction with regard to insulation with plane sloping surfaces, e.g. saddle roofs consisting of a plurality of parallel similar trusses or portal frames
    • E04B7/024—Roofs; Roof construction with regard to insulation with plane sloping surfaces, e.g. saddle roofs consisting of a plurality of parallel similar trusses or portal frames the trusses or frames supporting load-bearing purlins, e.g. braced purlins
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/58—Connections for building structures in general of bar-shaped building elements
    • E04B1/5806—Connections for building structures in general of bar-shaped building elements with a cross-section having an open profile

Definitions

  • the saddle has a channel shape with a horizontal base or web and flanges extending upwardly from opposite edges thereof, the web providing a support for the bottom flange of the C- shaped beam on the upper surface of the l-beam or supporting wall, and the flanges being effective to reinforce the C-shaped beam against bending.
  • One of the saddle flanges engages the web of the C-shaped beam to reinforce it against bending, and the other of the saddle flanges is employed to hold -the bottom flange of the beam against movement out of supporting engagement with the web of the saddle.
  • FIG 2 FIG. 3
  • PATENTEDFEB 6 I973 SHEET 3 OF 3 l/VVE/VTUR GEORGE 0. RATL/FF JR REINFORCING AND SUPPORTING SADDLE FOR C-SI'IAPED SHEET-METAL BEAMS This invention relates, as indicated, to a saddle for reinforcing and supporting the central portion of a C- shaped sheet-metal beam.
  • C-shaped sheet-metal beams of a type fabricated by rolling from galvanized steel strip, have been proposed for use as joists and other purposes in residential building construction.
  • opposite ends of such beams are supported on the laterally spaced walls of a building in a manner similar to the support for the ends of 2 X lO inch wooden planks commonly used as joists for this purpose.
  • the center portions of the joists are commonly supported on an I-beam or other supporting structure, such as the upper end of an intermediate partition wall.
  • a support of this type at the center of the joist limits the load which can be carried by C-shaped beams, since the load concentration at this point will result in failure of the central portion of the beams.
  • One of the objects of this invention is to increase the load carrying capacity of the central portions of C- shaped sheet-metal beams at the points where they are supported on a transversely extending I-beam orthe upper edge of an intermediate wall.
  • a further object of the invention is to provide a saddle for mounting the central portion of C-shaped joists on an I-beam or other support, the saddle having provisions for reinforcing the C-shaped beam and for increasing its load carrying capacity.
  • a further object of the invention is to provide a reinforcing and supporting saddle of the character described which has a channel shape with a horizontal web for supporting the bottom flange of a C-shaped beam on a transversely extending and upwardly facing narrow supporting surface, a flange along one edge thereof for reinforcing the web of the C-shaped beam,
  • Another object of the invention is to provide a saddle of the type described above which can be fabricated readily by rolling galvanized steel strip, and can be assembled on the center portion of a C-shaped beam by workmen with a minimum of effort and without the necessity of special tools for this purpose.
  • FIG. I is a fragmentary perspective view illustrating the manner in which the sheet-metal saddles of this invention are employed to support and reinforce the central portions of C-shaped joists in a floor of a residential building;
  • FIG. 2 is an enlarged sectional view taken in the plane of the line II-II of FIG. 1;
  • FIG. 3 is a side elevational view looking from the right of FIG. 2;
  • FIG. 4 is an enlarged perspective view of the saddle shown in the preceding figures
  • FIG. 5 is a transverse sectional view showing diagrammatically the manner in which the saddle of FIG. 4 is assembled on a joist to be supported thereby;
  • FIGS. 6 and 6a are diagrammatic views which illustrate the way C-shaped sheet-metal beams bend when subjected to loads sufficient to cause their failure;
  • FIG. 7 is a fragmentary perspective view of a modifi cation of the invention.
  • FIGS. 8 and 9 are enlarged perspective views respectively of a fragmentary portion of the structure shown in FIG. 7, and of a spring clip which is used to connect a joist with the saddle on which it is supported;
  • FIG. 10 is an enlarged fragmentary sectional view taken substantially along the line X-X of FIG. 7.
  • the saddle of this invention is designated as a whole by the numeral 1 FIGS. 1-5 of in the drawings, which show the manner in which it is used to reinforce and joists in the floor of a residential building, but it will be understood such showing is by way of example only and that the use of the saddles l to support similar C- shaped beams for other purposes, such as the rafters of a roof, is contemplated within the principles of this invention.
  • the beams 3 When used as joists in a floor construction as shown in FIG. I, the beams 3 are mounted in parallel positions with the opposite ends of each respectively supported on the upper ends of the spaced walls 6 (FIG. I) of a building.
  • the upwardly facing surface 4 may be the upper surface of a steel I-beam 5 as shown in FIG. 1, or the upper end of a partition wall between and parallel .to the walls 6 (FIG. I).
  • Stiffeners 7, in the form of metal brackets as illustrated, or wooden nailerblocks, are inserted in the ends of the joists 3 as a reinforcement and to facilitate attachment of the joists 3" to boxing planks (not shown) about the perimeter of the I C-Beam3
  • the beams 3 are preferably fabricated by rolling from galvanized steel strip, and are formed with a C- shaped contour-as shown in the drawingsEach of the beams 3 is a channel that has a C-shape which is formed by a web 9 (FIGS.
  • the saddles 1 are also fabricated by rolling from galvanized steel strip. Each is formed in the shape of a channel which includes a longitudinally extending web 13 (FIGS. 2, 4, with parallel flanges 14 and 15 (FIGS. 2-5) projecting upwardly along opposite edges thereof.
  • the flange 14 is a short flange and has a uniform height along itsentire length.
  • a lip or hook 16 (FIGS. 2, 4, 5) is turned angularly inwardly and downwardly from the upper edge of the flange 14 for hooking engagement over the upper edge of one of the beam lips 12 in a manner to be described.
  • the flange 15 is a longer flange which has a vertical dimension at its center 17 (FIGS. 3, 4) that is a substantial portion, approximately half, of the width of the web 9 of joist 3 for a purposeto be described.
  • the length of the central portion 17 between the points 18 (FIGS. 3, 4) is approximately that of the width of the upper surface 4 of the beam 5.
  • From the points 18, the upper edges 19 (FIGS. 3, 4) of the flange 15 slope downwardly to the ends 20 (FIGS. 3, 4) of the saddle 1, the ends 20 being-spaced outwardly'with respect to the opposite edges 21 (FIGS. 3, 4) of the supporting surface 4.
  • Tabs 22 (FIGS.
  • tabs 24 are'similarly struck from the material of the web 13 (of the saddle 1) and extend downwardly with respect to opposite edges 21 of the beam 5 as best shown in FIG. 3.
  • the tabs 24 are bent about the opposite edges 21 of the upper flange of the beam 5 to the positions shown in dotted lines in which they operate to hold the saddle 1 in a centered position with respect to the supporting surface 4.
  • the facing inner surfaces 25 and 26 (FIG. 5) of the flanges 14 and 15 of saddle are spaced apart a distance corresponding to the spacing between the oppositely facing outer surfaces 27 and 28 respectively on the lip 12 and. web 9 of the beam 3 so that the lower'flange 1 1 of the beam 3 will have a tight tit-in thesaddle 1 when assembled therein in the position shown in FIG. 2.
  • assembly of the saddle 1 on a beam 3 is effected by hooking the lip 16 on thesaddle 1 over the lip 12 on the lower flange ll of the beam 3 as shown diagrammatically in FIG. 5. After this has been done, the beam 3 is lowered to engage the saddle 1 with the surface 4 so that the weight of the beam 3 tends to rotate the saddle l in a clockwise direction about the upper edge 29 of the lip 12. After this has been done, assembly of the saddle 1 on the beam 3 is readily completed by applying a downward force to the upper flange 10, of the beam 3 which may be done by striking it sharply with a rubber mallet, to complete movement of the saddle 1 to the position shown in FIG. 2 of the drawings.
  • the inner surface 26 of the flange 15 will snugly engage the outer surface 28 of the web 9 so that the flange 15 will reinforce the web 9 against bending when the beam 3 is subjected to heavy loads.
  • the surfaces 27 and 25 have tight engagement with each other, and the upper edge 29 of the lip.12 is tightly engaged in the comer of the hook 16 so that the hook 16 operates through the lip 12 to hold the lower flange 11 of the beam 3 against movement out of engagement with the upper surface 30 of the saddle web 13.
  • FIGS. 6 and 6a illustrate the manner in which a beam 3 will distort and fail when subjected to loads beyond its capacity.
  • the web 9 will bend initially as shown in dotted lines in FIG. 6, and the bottom flange 11 will flex upwardly, with a rotating action about the corner 31 between web 9 and flange 11 of beam 3 (FIG. 6) to the position also shown in dotted lines in which a substantial portion of the lower flange 1 1 is out of supporting engagement with the surface 4 (not shown in FIG. 6).
  • each of the springclips 35 has a V-shape which is formed by a pair of arms 36 and 37 which diverge angularly upwardly from an integral connection 38 (FIGS. 8-10) at the bottoms thereof.
  • the arm v3:6 has a ledge 39 (FIGS. 8-10) at its upper end for hooking engagement over the upper edge 29 of the lower lip 12, and the arm 37 has a similar ledge 40 (FIGS. 8-10) which engages in an opening 41 (FIGS. 7, 9, 10) in the saddle short flange 14 with a snap action to hold the clip 35 against upward movement.
  • the openings 41 are provided at intervals along the length of the saddle flange 14 corresponding to the locations of the clips 25.
  • the arm 36 and its ledge 39 are effective through thebeam lip 12 of the beam 3 to hold the lower flange 11 of the beam 3 against moving out of engagement with the inner surface 30 on the web 13 of the saddle 1.
  • the web 13 of the saddle 1 has a width slightly greater than the width of the lower flange 11 of the beam 3 to provide a space 42 between the beam lip 12 and the saddle flange 14, as best shown in FIG. 10, to provide for insertion of the clip 35 to its operative position therebetween.
  • the beams 3' When used as joists in the construction of residential flooring, the beams 3'preferably have a size of about 7% X 2 inches. They may be rolled from galvanized steel having a thickness of, for example, either 10, 12, 14, 18 or gage, according to the load to be carried thereby, 20 gage being preferred for the average residential construction.
  • the saddles 1, in such case, are rolled from galvanized steel having a thickness of about 2 gage points heavier. For example, 1 6 gage steel is preferred for saddles 1 that are used with joists 3 that are fabricated from galvanized steel having a thickness of 18 gage.
  • the saddles 1 furnish a reinforcing support for the central portions 2 (FIG. 1) of the joists 3 on the upwardly facing and transversely extending surface 4 of an l-beam 5 or other supporting structure.
  • the saddle 1 When mounted in position as shown in the drawings, the saddle 1 extends longitudinally of the joists 3 and has the bottom surface 16 (FIG. 3) of its base or web 13 in supporting engagement with the upwardly facing surface 4 of the beam 5, the upper surface 30 of its web 13 being in supporting engagement with the bottom flange ll of the C-shaped joists 3.
  • a C-shaped beam having substantially parallel spaced beam flanges, a beam web connecting said beam flanges and a beam lip on one beam flange of said beam flanges;
  • a saddle having a saddle web, a saddle lip flange on one end of said saddle web, a reinforcing saddle flange on the other end of said saddle web and a saddle hook means on the free end of said saddle lipflange;
  • said saddle being operable so that said saddle hook means engages said free end of beam lip so that when relative pivotal movement occurs between said saddle and said free end of said beam:
  • the inner surface of said saddle web engages the outer surface of said one beam flange substantially along the registering said inner surface of said saddle web and said outer surface of said one beam flange to hold said beam lip against upward movement to said saddle web;
  • said inner surface of said reinforcing saddle flange engages the outer surface of said beam web substantially along the length of said reinforcing saddle flange in supporting engagement of said beam web to prevent bending of said beam web under heavy loads;
  • said saddle and said beam carried thereby having said saddle web mounted transversely to said upwardly facing surface of said structural support member;
  • said saddle having ends spaced outwardly with respect to the opposite edges of said upwardly facing surface of said structural support member to reinforce a central portion of said beam.
  • said saddle lip flange being provided with an opening

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Joining Of Building Structures In Genera (AREA)
US00075393A 1970-09-25 1970-09-25 Reinforcing and supporting saddle for c-shaped sheet-metal beams Expired - Lifetime US3714752A (en)

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Application Number Priority Date Filing Date Title
US7539370A 1970-09-25 1970-09-25

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US (1) US3714752A (enrdf_load_stackoverflow)
BE (1) BE772953A (enrdf_load_stackoverflow)
BR (1) BR7106301D0 (enrdf_load_stackoverflow)
CA (1) CA945333A (enrdf_load_stackoverflow)
DE (1) DE2147845A1 (enrdf_load_stackoverflow)
FR (1) FR2107974B1 (enrdf_load_stackoverflow)
GB (1) GB1375711A (enrdf_load_stackoverflow)
IT (1) IT939876B (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3902298A (en) * 1973-12-20 1975-09-02 United States Steel Corp Saddle clip for mounting and reinforceably supporting C-shape metal beams
US3934387A (en) * 1973-08-30 1976-01-27 Wolfgang Moeller Unitary clip device for joining removable ceiling tile to hanger member
US5069830A (en) * 1990-02-20 1991-12-03 Norton Company Non-welded support plate or bed limiter for packed towers and method of making same
EP0979908A2 (en) 1998-08-12 2000-02-16 Armstrong World Industries, Inc. Ceiling panel
US6244010B1 (en) * 1999-05-21 2001-06-12 Scott E. Sluiter Snap-in lateral truss brace
US20210395993A1 (en) * 2020-06-19 2021-12-23 Fred A. Wagner, III Modular decking system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3376344D1 (en) * 1982-12-03 1988-05-26 Ward Building Systems Ltd Roof, wall or floor structure
GB2232427A (en) * 1989-04-11 1990-12-12 Kh Stramit Corp Ltd Purlin support

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US397447A (en) * 1889-02-05 Manufacture of clips for connecting tie-bars with switch-rails
US1073082A (en) * 1910-09-28 1913-09-16 George H Barbour Metallic clip-fastening.
US1360774A (en) * 1920-01-14 1920-11-30 Mooney Dermot Joseph Metal construction
GB368131A (en) * 1931-04-29 1932-03-03 Manufax Ltd Improvements in or relating to girder or like structures for use in the making of models or like small articles
US3177988A (en) * 1960-04-20 1965-04-13 Victory Metal Mfg Company Refrigerator cabinet construction
US3553915A (en) * 1968-08-28 1971-01-12 Modulex Inc Apparatus and method for attaching wall panels to studs, and partition construction formed thereby

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US397447A (en) * 1889-02-05 Manufacture of clips for connecting tie-bars with switch-rails
US1073082A (en) * 1910-09-28 1913-09-16 George H Barbour Metallic clip-fastening.
US1360774A (en) * 1920-01-14 1920-11-30 Mooney Dermot Joseph Metal construction
GB368131A (en) * 1931-04-29 1932-03-03 Manufax Ltd Improvements in or relating to girder or like structures for use in the making of models or like small articles
US3177988A (en) * 1960-04-20 1965-04-13 Victory Metal Mfg Company Refrigerator cabinet construction
US3553915A (en) * 1968-08-28 1971-01-12 Modulex Inc Apparatus and method for attaching wall panels to studs, and partition construction formed thereby

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3934387A (en) * 1973-08-30 1976-01-27 Wolfgang Moeller Unitary clip device for joining removable ceiling tile to hanger member
US3902298A (en) * 1973-12-20 1975-09-02 United States Steel Corp Saddle clip for mounting and reinforceably supporting C-shape metal beams
US5069830A (en) * 1990-02-20 1991-12-03 Norton Company Non-welded support plate or bed limiter for packed towers and method of making same
EP0979908A2 (en) 1998-08-12 2000-02-16 Armstrong World Industries, Inc. Ceiling panel
US6244010B1 (en) * 1999-05-21 2001-06-12 Scott E. Sluiter Snap-in lateral truss brace
US20210395993A1 (en) * 2020-06-19 2021-12-23 Fred A. Wagner, III Modular decking system

Also Published As

Publication number Publication date
DE2147845A1 (de) 1972-03-30
BR7106301D0 (pt) 1973-04-26
CA945333A (en) 1974-04-16
BE772953A (fr) 1972-03-22
GB1375711A (enrdf_load_stackoverflow) 1974-11-27
FR2107974A1 (enrdf_load_stackoverflow) 1972-05-12
FR2107974B1 (enrdf_load_stackoverflow) 1975-07-18
IT939876B (it) 1973-02-10

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STCF Information on status: patent grant

Free format text: PATENTED FILE - (OLD CASE ADDED FOR FILE TRACKING PURPOSES)

AS Assignment

Owner name: USX CORPORATION, A CORP. OF DE, STATELESS

Free format text: MERGER;ASSIGNOR:UNITED STATES STEEL CORPORATION (MERGED INTO);REEL/FRAME:005060/0960

Effective date: 19880112