WO2003057931A3 - Cold-formed steel joists - Google Patents

Cold-formed steel joists Download PDF

Info

Publication number
WO2003057931A3
WO2003057931A3 PCT/US2003/000267 US0300267W WO03057931A3 WO 2003057931 A3 WO2003057931 A3 WO 2003057931A3 US 0300267 W US0300267 W US 0300267W WO 03057931 A3 WO03057931 A3 WO 03057931A3
Authority
WO
WIPO (PCT)
Prior art keywords
base
chord
joist
cold
chords
Prior art date
Application number
PCT/US2003/000267
Other languages
French (fr)
Other versions
WO2003057931A2 (en
Inventor
Maury Golovin
Patrick Toney
Original Assignee
Watson Dennis P
Maury Golovin
Patrick Toney
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 Watson Dennis P, Maury Golovin, Patrick Toney filed Critical Watson Dennis P
Priority to US10/500,833 priority Critical patent/US20060053732A1/en
Priority to AU2003206400A priority patent/AU2003206400A1/en
Publication of WO2003057931A2 publication Critical patent/WO2003057931A2/en
Publication of WO2003057931A3 publication Critical patent/WO2003057931A3/en

Links

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
    • E04C3/08—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with apertured web, e.g. with a web consisting of bar-like components; Honeycomb girders
    • E04C3/09—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with apertured web, e.g. with a web consisting of bar-like components; Honeycomb girders 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
    • E04C2003/0443—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
    • E04C2003/0473—U- or C-shaped
    • 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
    • E04C2003/0486—Truss like structures composed of separate truss elements
    • 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
    • E04C2003/0486—Truss like structures composed of separate truss elements
    • E04C2003/0491—Truss like structures composed of separate truss elements the truss elements being located in one single surface or in several parallel surfaces

Abstract

A metallic joist (100) comprising cold-formed top and bottom chords (200), and cold-­formed metallic truss web members (300) arranged in a vertical and diagonal fashion shop welded to the chords. End connections, or seats (1000) are each shop welded to the top chord (200) and to one of the webs (300). Each seat (1000) comprises a pair of vertical metallic planes that act as shear plates, welded to and extending outwardly and upwardly of the end portion of the top chord of the joist, and portions extending horizontally either side of the chord and punched with holes for easy field bolting to beams or other supporting elements. Each of the chords (200) comprises a planar base (205) and a pair of legs (210). Each leg (210) comprises a chamfered portion (210a) extending downward and outward from one edge of the base at an acute angle, about 45 degree, for stiffening the longitudinal edges of the base (205) to accommodate axial and moment forces. An upper vertical portion (210b), perpendicular to the base, extends downward from a lower end of the chamfered portion to provide a planar width of material to accommodate axial and moment forces. An inwardly recessed portion (210c) parallel to the base extends towards the chord's center line from a lower end of the upper vertical portion; and an attachment portion (210d) perpendicular to the base, extends downward from an inner end of the inwardly recessed portion. The inventive chord imparts the joist of the present invention with enough strength and stiffness to span up to 100-foot lengths.
PCT/US2003/000267 2002-01-07 2003-01-07 Cold-formed steel joists WO2003057931A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US10/500,833 US20060053732A1 (en) 2002-01-07 2003-01-07 Cold-formed steel joists
AU2003206400A AU2003206400A1 (en) 2002-01-07 2003-01-07 Cold-formed steel joists

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US34481902P 2002-01-07 2002-01-07
US60/344,819 2002-01-07

Publications (2)

Publication Number Publication Date
WO2003057931A2 WO2003057931A2 (en) 2003-07-17
WO2003057931A3 true WO2003057931A3 (en) 2003-12-18

Family

ID=23352183

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/000267 WO2003057931A2 (en) 2002-01-07 2003-01-07 Cold-formed steel joists

Country Status (3)

Country Link
US (1) US20060053732A1 (en)
AU (1) AU2003206400A1 (en)
WO (1) WO2003057931A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8950151B2 (en) 2008-09-08 2015-02-10 Ispan Systems Lp Adjustable floor to wall connectors for use with bottom chord and web bearing joists

Families Citing this family (21)

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US7587877B2 (en) 2003-10-28 2009-09-15 Best Joist Inc Cold-formed steel joists
US10252376B2 (en) * 2009-03-03 2019-04-09 U-Haul International, Inc. Welded lap joint with corrosive-protective structure
US20100223877A1 (en) * 2009-03-03 2010-09-09 The Board Of Regents Of Oklahoma State University Roof truss system for long span and wide spacing with one-sided assembly
US9975577B2 (en) 2009-07-22 2018-05-22 Ispan Systems Lp Roll formed steel beam
US10065403B2 (en) 2009-11-23 2018-09-04 Cyvek, Inc. Microfluidic assay assemblies and methods of manufacture
US9759718B2 (en) 2009-11-23 2017-09-12 Cyvek, Inc. PDMS membrane-confined nucleic acid and antibody/antigen-functionalized microlength tube capture elements, and systems employing them, and methods of their use
US9500645B2 (en) 2009-11-23 2016-11-22 Cyvek, Inc. Micro-tube particles for microfluidic assays and methods of manufacture
US9700889B2 (en) 2009-11-23 2017-07-11 Cyvek, Inc. Methods and systems for manufacture of microarray assay systems, conducting microfluidic assays, and monitoring and scanning to obtain microfluidic assay results
US9216412B2 (en) * 2009-11-23 2015-12-22 Cyvek, Inc. Microfluidic devices and methods of manufacture and use
US10022696B2 (en) 2009-11-23 2018-07-17 Cyvek, Inc. Microfluidic assay systems employing micro-particles and methods of manufacture
US8943776B2 (en) 2012-09-28 2015-02-03 Ispan Systems Lp Composite steel joist
US8919071B2 (en) * 2012-12-19 2014-12-30 Patco, Llc Truss configuration
US9670676B2 (en) * 2014-03-24 2017-06-06 Universal Forest Products, Inc. Truss
CA2992313C (en) * 2015-07-13 2023-08-01 9306-1695 Quebec Inc. Composite i-truss
US10228367B2 (en) 2015-12-01 2019-03-12 ProteinSimple Segmented multi-use automated assay cartridge
BR102017026394B1 (en) * 2017-12-07 2022-08-02 Carlos Alberto De Almeida Borges SHIELD REINFORCEMENT
CA3004659A1 (en) * 2018-05-11 2019-11-11 Thomas Chizek Structural support system
CA3050000A1 (en) 2019-07-16 2021-01-16 Invent To Build Inc. Concrete fillable steel joist
CN113152792A (en) * 2021-02-04 2021-07-23 西安建筑科技大学 Anti-cutting steel truss
US11499315B1 (en) * 2021-06-10 2022-11-15 Harsoyo Lukito Connectors for use in truss system
CN114211150B (en) * 2021-12-30 2023-06-27 武船重型工程股份有限公司 Node welding method for double-layer truss bridge

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8950151B2 (en) 2008-09-08 2015-02-10 Ispan Systems Lp Adjustable floor to wall connectors for use with bottom chord and web bearing joists

Also Published As

Publication number Publication date
US20060053732A1 (en) 2006-03-16
AU2003206400A8 (en) 2003-07-24
WO2003057931A2 (en) 2003-07-17
AU2003206400A1 (en) 2003-07-24

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