US3517474A - Flanged structural assembly - Google Patents

Flanged structural assembly Download PDF

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Publication number
US3517474A
US3517474A US723654A US3517474DA US3517474A US 3517474 A US3517474 A US 3517474A US 723654 A US723654 A US 723654A US 3517474D A US3517474D A US 3517474DA US 3517474 A US3517474 A US 3517474A
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US
United States
Prior art keywords
core
flanges
deformations
girder
girders
Prior art date
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
Application number
US723654A
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English (en)
Inventor
Andre Lanternier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
De Wendel et Cie SA
Original Assignee
De Wendel et Cie SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by De Wendel et Cie SA filed Critical De Wendel et Cie SA
Application granted granted Critical
Publication of US3517474A publication Critical patent/US3517474A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C3/06—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web
    • E04C3/07—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web at least partly of bent or otherwise deformed strip- or sheet-like material
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0408—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section
    • E04C2003/0413—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section being built up from several parts
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0426—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section
    • E04C2003/043—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section the hollow cross-section comprising at least one enclosed cavity
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0426—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section
    • E04C2003/0439—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section the cross-section comprising open parts and hollow parts
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0443—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
    • E04C2003/0452—H- or I-shaped
    • E04C2003/0456—H- or I-shaped hollow flanged, i.e. "dogbone" metal beams

Definitions

  • the total moment of inertia of such a girder is equal to the sum of the moment of inertia of its flange and the product of the cross section of the metal sheet by the distance between the centre of gravity of the flange and the centre of gravity of the girder itself.
  • I moment of inertia of the girder assembly
  • D distance between the center of gravity of the flanges and that of the girders.
  • V shape for these flanges is in most cases of utilization, inferior from the mechanical behaviour point of view to a rectangular or square shape.
  • the present invention thus provides girders with tubular wings or flanges and with a planar core or one stiffened by various deformations, girders whose wings are folded on themselves, characterized by the fact that this folding is carried out in such a way that the cross section of said wings be rectangular or trapezoidal and that the two folded sections converge after a second bending toward the inside of the wing until contact with the back of the upper side of the wing, the core being welded to the two folded sections and preferably along the bend.
  • the invention is also concerned with a girder whose resistance is increased by stiffening the core through alternate deformations, characterized by the fact that these deformations are discontinuous and do not occupy the entire height of the core in such a way that there remains in the general plane of said core small metal tongues which become lodged between the folds of the flanges and are welded thereto.
  • the rectangular cross section of the flanges increases as evident from the above given formula the total moment of inertia of the girder relative to that of girders made from the same materials but whose cross section is in the shape of a V as above described in the prior art.
  • FIG. 1 is a perspective view of a girder according to the invention.
  • FIG. 2 is a view of a girder according to the invention with a profiled core in broken away section.
  • FIG. 3 is a view taken along line x-x of the support of awing or flange along a V-shaped deformation of the core.
  • FIG. 4 is a view of the cross section of a sheet for forming the V-shaped core.
  • FIG. 1 the two wings or tubular flanges referenced A and B having a'cross section in a generally rectangular or trapezoidal shape which may be cold drawn along all or part of their surface and whose edges are rounded.
  • the two flanges 1 and 2 have folded edges: 3, 4, 5 and 6 bent at an obtuse angle and converge in the middle of planar surfaces 7 and 8.
  • the cold forming process causes first a very substantial increase in the elastic limit and permits consequently the support of greater stresses by smaller thicknesses of girder; it has been shown that in these latter breakage was no longer to be feared.
  • FIG. 2 There is seen in FIG. 2 a girder according to the invention whose core 9 has been preferably cold shaped in order to have the profile of a broken plane from place to place in the form of a V, for example at 12 and 13.
  • Such a core is obtained (FIG. 4) from a sheet 14 by folding along lines '15, 16, -17.
  • Structural assembly comprising at least one elongated member with a main portion arranged in a single plane and having side flanges with folded edges extending therefrom in a plane parallel to said first-mentioned plane, said edges having their convergent extremities bent toward the middle of the upper surface of said member at an angle defining a channel between said extremities; a core member arranged in a plane perpendicular to said first-mentioned plane, the lower end of said member being received by said channel and a weld between each of said extremities and said core member, said core being positioned so as to bear on the back of an upper face of one of said flanges, thereby to increase the resistance thereof to cutting stresses.
  • Structural assembly comprising at least one elongated member with a main portion arranged in a single plane and having side flanges with folded edges extending therefrom in a plane parallel to said first-mentioned plane, said edges having their convergent extremities bent toward the middle of the upper surface of said member at an angle defining a channel between said extremities; a core member arranged in a plane perpendicular to said first-mentioned plane, the lower end of said member being received by said channel and a weld between each of said extremities and said core member, said core having alternate deformations and small metal tongues fitting between ends of said flange and welded thereto.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
US723654A 1967-06-16 1968-04-24 Flanged structural assembly Expired - Lifetime US3517474A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR110643A FR1534075A (fr) 1967-06-16 1967-06-16 Poutrelles à ailes ou membrures tubulaires

Publications (1)

Publication Number Publication Date
US3517474A true US3517474A (en) 1970-06-30

Family

ID=8633169

Family Applications (1)

Application Number Title Priority Date Filing Date
US723654A Expired - Lifetime US3517474A (en) 1967-06-16 1968-04-24 Flanged structural assembly

Country Status (7)

Country Link
US (1) US3517474A (en:Method)
AT (1) AT282155B (en:Method)
BE (1) BE716667A (en:Method)
CH (1) CH470553A (en:Method)
FR (1) FR1534075A (en:Method)
GB (1) GB1218258A (en:Method)
NL (1) NL6808251A (en:Method)

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3624694A (en) * 1969-12-04 1971-11-30 Futuristic Building Products I Reinforced stud construction
US4002000A (en) * 1975-06-30 1977-01-11 Palmer-Shile Company Beam construction and method of manufacture
US4019302A (en) * 1973-04-03 1977-04-26 Meyer Leon J Metal flange web connection
US4047355A (en) * 1976-05-03 1977-09-13 Studco, Inc. Shaftwall
US4455806A (en) * 1978-06-12 1984-06-26 Rice Donald W Structural building member
US4669243A (en) * 1985-11-06 1987-06-02 Truswal Systems Corporation Fire protective system and method for a support structure
US4713919A (en) * 1986-09-05 1987-12-22 National Rolling Mills Inc. Laser welded ceiling grid members
US4798037A (en) * 1983-08-19 1989-01-17 Mabey Hire Co., Limited Steel soldier
US4991364A (en) * 1989-06-26 1991-02-12 Spacemaker Limited Greenhouse attachment
JPH03502223A (ja) * 1988-11-18 1991-05-23 チューブ・テクノロジー・ピィ・ティ・ワィ・リミテッド 構造部材及びその製造方法
AU626030B2 (en) * 1988-07-27 1992-07-23 Smorgon Steel Litesteel Products Pty Ltd Structural member and process for forming same
US5163225A (en) * 1988-07-25 1992-11-17 Tube Technology Pty Ltd. Process for forming a structural member utilizing high frequency electrical induction or resistance welding
US5403986A (en) * 1990-09-28 1995-04-04 Tube Technology Pty. Ltd. Structural member and method of making by cold rolling followed by induction or resistance welding
US5485706A (en) * 1992-03-27 1996-01-23 National Gypsum Company Offset forming of structural components
US5501053A (en) * 1990-09-28 1996-03-26 Tube Technology Pty., Ltd. Interengageable structural members
US5644883A (en) * 1993-02-25 1997-07-08 National Gypsum Company Multiple use corner clip
US5724784A (en) * 1992-03-27 1998-03-10 National Gypsum Company Shaft wall and horizontal metal stud therefor
US5740644A (en) * 1995-02-08 1998-04-21 National Gypsum Company Wall with horizontal metal stud and reinforcement channel therefor
US5749192A (en) * 1993-02-25 1998-05-12 National Gypsum Company Corner clips for horizonal framing
US6363682B1 (en) * 1999-06-22 2002-04-02 Eric W. Cowley Lumber structural enhancer
US6519908B1 (en) 2000-06-27 2003-02-18 Nci Building Systems, L.P. Structural member for use in the construction of buildings
US20040065045A1 (en) * 2002-10-02 2004-04-08 Yuan-Kuan Chen Metal tubes for guardrail
US6748941B1 (en) 2002-08-27 2004-06-15 Stephen Ross Foam fireplace construction
US6807787B1 (en) 2003-02-05 2004-10-26 Stephen Ross System for joining foam components
US20050017232A1 (en) * 2002-10-02 2005-01-27 Yuan-Kuan Chen Metal tubes for guardrail
US20050023514A1 (en) * 2002-05-07 2005-02-03 Gibbs Edward L. Internally welded barrier
US20050108979A1 (en) * 2003-11-26 2005-05-26 Yttrup Peter J. Pole reinforcing structures
US20050199864A1 (en) * 2004-03-15 2005-09-15 Gibbs Edward L. Terrain-adjustable barrier
US20060150571A1 (en) * 2005-01-11 2006-07-13 Zahner L W Iii I-beam with curved flanges
US20070194564A1 (en) * 2006-02-17 2007-08-23 Garceau Bernard F Trailer and method of assembly
US20080028720A1 (en) * 2003-06-23 2008-02-07 Smorgon Steel Litesteel Products Pty Ltd An Improved Beam
US9021759B2 (en) * 2012-06-13 2015-05-05 Usg Interiors, Llc Serpentine insert for open web grid
CN113216507A (zh) * 2017-03-31 2021-08-06 超帧(英国)有限公司 模块化隔板
US11280091B2 (en) * 2016-05-20 2022-03-22 Trilogy Structural, Llc Structural joists and methods to manufacture the same
US11761231B1 (en) 2004-03-15 2023-09-19 Ameristar Perimeter Security Usa Inc. Rail with brackets

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2549933B1 (fr) * 1983-07-27 1986-06-20 Donn France Sa Poutre profilee en forme d'i, attaches et assemblages pour de telles poutres

Citations (6)

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NL69106C (en:Method) *
US426558A (en) * 1890-04-29 George w
US1488095A (en) * 1921-06-16 1924-03-25 Superior Steel Door And Trim C Metal door
US3167851A (en) * 1962-01-23 1965-02-02 J H Carruthers & Company Ltd Method of making box-section structural elements
CH414118A (de) * 1964-02-12 1966-05-31 Vest Aage Träger und Verfahren zu seiner Herstellung
US3342007A (en) * 1964-08-03 1967-09-19 Anthes Imp Ltd Structural member

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL69106C (en:Method) *
US426558A (en) * 1890-04-29 George w
US1488095A (en) * 1921-06-16 1924-03-25 Superior Steel Door And Trim C Metal door
US3167851A (en) * 1962-01-23 1965-02-02 J H Carruthers & Company Ltd Method of making box-section structural elements
CH414118A (de) * 1964-02-12 1966-05-31 Vest Aage Träger und Verfahren zu seiner Herstellung
US3342007A (en) * 1964-08-03 1967-09-19 Anthes Imp Ltd Structural member

Cited By (67)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3624694A (en) * 1969-12-04 1971-11-30 Futuristic Building Products I Reinforced stud construction
US4019302A (en) * 1973-04-03 1977-04-26 Meyer Leon J Metal flange web connection
US4002000A (en) * 1975-06-30 1977-01-11 Palmer-Shile Company Beam construction and method of manufacture
US4047355A (en) * 1976-05-03 1977-09-13 Studco, Inc. Shaftwall
US4455806A (en) * 1978-06-12 1984-06-26 Rice Donald W Structural building member
US4798037A (en) * 1983-08-19 1989-01-17 Mabey Hire Co., Limited Steel soldier
US4669243A (en) * 1985-11-06 1987-06-02 Truswal Systems Corporation Fire protective system and method for a support structure
US4713919A (en) * 1986-09-05 1987-12-22 National Rolling Mills Inc. Laser welded ceiling grid members
US5373679A (en) * 1988-07-25 1994-12-20 Tube Technology Pty Ltd Structural member and process for forming same
US5163225A (en) * 1988-07-25 1992-11-17 Tube Technology Pty Ltd. Process for forming a structural member utilizing high frequency electrical induction or resistance welding
AU626030B2 (en) * 1988-07-27 1992-07-23 Smorgon Steel Litesteel Products Pty Ltd Structural member and process for forming same
JPH03502223A (ja) * 1988-11-18 1991-05-23 チューブ・テクノロジー・ピィ・ティ・ワィ・リミテッド 構造部材及びその製造方法
JP2506471B2 (ja) 1988-11-18 1996-06-12 チューブ・テクノロジー・ピィ・ティ・ワィ・リミテッド 構造部材及びその製造方法
US4991364A (en) * 1989-06-26 1991-02-12 Spacemaker Limited Greenhouse attachment
US5403986A (en) * 1990-09-28 1995-04-04 Tube Technology Pty. Ltd. Structural member and method of making by cold rolling followed by induction or resistance welding
US5501053A (en) * 1990-09-28 1996-03-26 Tube Technology Pty., Ltd. Interengageable structural members
US5485706A (en) * 1992-03-27 1996-01-23 National Gypsum Company Offset forming of structural components
US5724784A (en) * 1992-03-27 1998-03-10 National Gypsum Company Shaft wall and horizontal metal stud therefor
US5644883A (en) * 1993-02-25 1997-07-08 National Gypsum Company Multiple use corner clip
US5749192A (en) * 1993-02-25 1998-05-12 National Gypsum Company Corner clips for horizonal framing
US5740644A (en) * 1995-02-08 1998-04-21 National Gypsum Company Wall with horizontal metal stud and reinforcement channel therefor
US6363682B1 (en) * 1999-06-22 2002-04-02 Eric W. Cowley Lumber structural enhancer
US20050108975A1 (en) * 2000-06-27 2005-05-26 Eric Masterson Structural member for use in the construction of buildings
US7546714B2 (en) 2000-06-27 2009-06-16 Nci Group, Inc. Building joist with saddle support at ends thereof
US7086208B2 (en) 2000-06-27 2006-08-08 Nci Building Systems, L.P. Structural member for use in the construction of buildings
US20070245675A1 (en) * 2000-06-27 2007-10-25 Nci Buildings Systems, L.P. Structural member for use in the construction of buildings
US6519908B1 (en) 2000-06-27 2003-02-18 Nci Building Systems, L.P. Structural member for use in the construction of buildings
US6874294B2 (en) 2000-06-27 2005-04-05 Nci Building Systems, L.P. Structural member for use in the construction of buildings
US7071439B2 (en) 2002-05-07 2006-07-04 Edward L. Gibbs Method for barrier assembly
US20050023515A1 (en) * 2002-05-07 2005-02-03 Gibbs Edward L. Barrier formed by resistance projection welding
US20050040382A1 (en) * 2002-05-07 2005-02-24 Gibbs Edward L. Method for barrier assembly
US20050092978A1 (en) * 2002-05-07 2005-05-05 Gibbs Edward L. Welded barrier system
US7282659B1 (en) 2002-05-07 2007-10-16 Edward L. Gibbs Panel assembly apparatus
US20050023514A1 (en) * 2002-05-07 2005-02-03 Gibbs Edward L. Internally welded barrier
US7159853B2 (en) 2002-05-07 2007-01-09 Edward L. Gibbs Welded barrier system
US6748941B1 (en) 2002-08-27 2004-06-15 Stephen Ross Foam fireplace construction
US20040065045A1 (en) * 2002-10-02 2004-04-08 Yuan-Kuan Chen Metal tubes for guardrail
US7017320B2 (en) * 2002-10-02 2006-03-28 Yuan-Kuan Chen Metal tubes for guardrail
US6796101B2 (en) * 2002-10-02 2004-09-28 Yuan-Kuan Chen Metal tubes for guardrail
US20050017232A1 (en) * 2002-10-02 2005-01-27 Yuan-Kuan Chen Metal tubes for guardrail
US6807787B1 (en) 2003-02-05 2004-10-26 Stephen Ross System for joining foam components
US8181423B2 (en) 2003-06-23 2012-05-22 Smorgon Steel Litesteel Products Pty Ltd. Beam
US20100005758A1 (en) * 2003-06-23 2010-01-14 Smorgon Steel Litesteel Products Pty Ltd Beam
US20110162320A1 (en) * 2003-06-23 2011-07-07 Smorgon Steel Litesteel Products Pty Ltd Beam
US20080028720A1 (en) * 2003-06-23 2008-02-07 Smorgon Steel Litesteel Products Pty Ltd An Improved Beam
US20050108979A1 (en) * 2003-11-26 2005-05-26 Yttrup Peter J. Pole reinforcing structures
US20050199864A1 (en) * 2004-03-15 2005-09-15 Gibbs Edward L. Terrain-adjustable barrier
US8523150B2 (en) 2004-03-15 2013-09-03 Edward L. Gibbs Fence with tiltable picket
US11761231B1 (en) 2004-03-15 2023-09-19 Ameristar Perimeter Security Usa Inc. Rail with brackets
US7621510B2 (en) 2004-03-15 2009-11-24 Edward L. Gibbs Terrain-adjustable barrier
US11060320B1 (en) 2004-03-15 2021-07-13 Ameristar Perimeter Security Usa Inc. Barrier with tab-containing rails
US10538939B1 (en) 2004-03-15 2020-01-21 Ameristar Perimeter Security Usa Inc. Barrier for sloped terrains
US20100288988A2 (en) * 2004-03-15 2010-11-18 Edward Gibbs Fence with tiltable picket
US7896318B1 (en) 2004-03-15 2011-03-01 Edward L. Gibbs Terrain-conforming barrier
US20050205854A1 (en) * 2004-03-15 2005-09-22 Edward Gibbs Fence with tiltable picket
US7980534B1 (en) 2004-03-15 2011-07-19 Edward L. Gibbs Rackable barrier system
US9840854B1 (en) 2004-03-15 2017-12-12 Ameristar Perimeter Security Usa Inc. Terrain-conformable barrier
US7434366B2 (en) * 2005-01-11 2008-10-14 A. Zahner Company I-beam with curved flanges
US20060150571A1 (en) * 2005-01-11 2006-07-13 Zahner L W Iii I-beam with curved flanges
US7784243B2 (en) * 2005-01-11 2010-08-31 A. Zahner Company I-beam with curved flanges
US20080196356A1 (en) * 2005-01-11 2008-08-21 A. Zahner Company I-beam with curved flanges
US20070194564A1 (en) * 2006-02-17 2007-08-23 Garceau Bernard F Trailer and method of assembly
US9021759B2 (en) * 2012-06-13 2015-05-05 Usg Interiors, Llc Serpentine insert for open web grid
US11280091B2 (en) * 2016-05-20 2022-03-22 Trilogy Structural, Llc Structural joists and methods to manufacture the same
US20220282485A1 (en) * 2016-05-20 2022-09-08 Trilogy Structural, Llc Structural joists and methods to manufacture the same
US12084860B2 (en) * 2016-05-20 2024-09-10 Trilogy Structural, Llc Structural joists and methods to manufacture the same
CN113216507A (zh) * 2017-03-31 2021-08-06 超帧(英国)有限公司 模块化隔板

Also Published As

Publication number Publication date
AT282155B (de) 1970-06-25
NL6808251A (en:Method) 1968-12-17
GB1218258A (en) 1971-01-06
DE1759538A1 (de) 1971-09-23
BE716667A (en:Method) 1968-12-02
FR1534075A (fr) 1968-07-26
CH470553A (fr) 1969-03-31

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