US1698081A - Metallic floor joist - Google Patents

Metallic floor joist Download PDF

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Publication number
US1698081A
US1698081A US144062A US14406226A US1698081A US 1698081 A US1698081 A US 1698081A US 144062 A US144062 A US 144062A US 14406226 A US14406226 A US 14406226A US 1698081 A US1698081 A US 1698081A
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US
United States
Prior art keywords
expanded
floor joist
bar
portions
metallic floor
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
US144062A
Inventor
Herbert K Baker
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Individual
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Individual
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Publication date
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Priority to US144062A priority Critical patent/US1698081A/en
Application granted granted Critical
Publication of US1698081A publication Critical patent/US1698081A/en
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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
    • E04C3/08—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
    • E04C3/083—Honeycomb girders; Girders with apertured solid web
    • 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
    • E04C2003/0434—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 open cross-section free of enclosed cavities
    • 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
    • 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
    • E04C2003/046—L- or T-shaped
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49616—Structural member making
    • Y10T29/49623—Static structure, e.g., a building component
    • Y10T29/49625—Openwork, e.g., a truss, joist, frame, lattice-type or box beam

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Floor Finish (AREA)
  • Rod-Shaped Construction Members (AREA)

Description

jam. 8, 1929. 1,6%,03
H. K. BAKER METALLIC FLOOR JOIST Filed Oct. 25, 1926 V HI I wil HI llll} IH R Ill Patented Jan. 8, 1929.
UNITED STATES PATENT OFFIQE.
HERBERT K. BAKER, OF DETROIT, MICHIGAN.
METALLIC FLOOR J'OIST.
Application filed October 25, 1926. Serial No. 144,062.
vention to obtain a construction of advan-' tageous design which may be manufactured at relatively low cast and to this end the invention consists in the construction as hereinafter set forth.
In the drawings; Figure 1 is a side elevation of the beam or structural member which forms an element of my improved construction..
Figure 2 is a cross section thereof.
Figures 3 and 4 are similar views to 1 and 2, showing the expanded member.
Figures 5 and 6 are similar views showing the expanded member combined with the lower chord member to form the completed joist.
Figure 7 is a perspective view of a portion of this member,
Figure 8 is a perspective view of a supplementary member used in connection with the main member.
Figure 9 is an enlarged cross section on line 99 of Figure 5.
My improved construction comprises essentially a main member A formed of a rolled structural shape preferably an I-beam in which the lower head of the I is less in width than the upper head. This member is first slitted preferably in a plane below the neutral axis, the slits B being distributed along the length of the bar and separated from each other by unslit portions C. The bar is then expanded by the use of any suitable machine or apparatus (not shown) to stretch out the portion D below the slit and to form thereof two oppositely inclined portions D and D A lower chord member E prc t'erably formed of a flat bar is then secured to each of the points D preferably by welding and a flat bar F is welded or otherwise secured to the under side of the end portion of the bar A extending beyond the first slit.
The construction as described can be cheaply manufactured as the operations of slitting and expanding the main member are easily performed. Also on account of the fact that the area of the wall is quite limited the members E and F may be easily mounted with the main member A. When completed the expanded portions D, D ,.lD form the webbing of the truss, the upper chord member of which is formed by the portion of the bar A above the slits and the lower chord member by the bar E. The bar F by reinfqrclng the end portion of the main member, provides additional strength for said portion between the supporting wall and the first bend of the truss.
lVhat I claim as my invention is:
1. A metallic floor joist comprising a member formed of a rolled structural shape having unequal head portions and an intermediate web portion, the latter having a series of longitudinal slits therein separated by unslit portions, the portions below the slit being expanded to form oppositely inclined portions, and a lower chord member formed of a straight bar rigidly connected to the lowermost points of each of said expanded portions.
2. A metallic floor joist comprising a main member formed of a rolled I-beam having the lower head thereof less in width than the upper head, said beam having the web portion thereof longitudinally slit in aplane below the neutral axis to form a series of bars, said bars being expanded to form portions on opposite sides of the center thereof oppositely inclined, a lower chord member formed of a straight bar rigidly connected to the lowermost points of said expanded bars, and a reinforcing member secured to the lower head of the I-beam in thc'port-ion of said main member extending beyond the end of the first of said slits. v
3. A metallic floor joist comprising a member formed of a rolled structural shape having opposite head portions and an intermediate web portion. said web portion having a series of longitudinal slits therein separated by unslit portions, the portion of said bar above said slits forming a complete straight chord member and the portion below said slits being expanded to form oppositely inclined members of a web system, and straight bar rigidly attached to the lowermost points of said expanded portion constituting the other chord of the truss.
In testimony whereof I afiix my signature.
HERBERT K. BAKER.
US144062A 1926-10-25 1926-10-25 Metallic floor joist Expired - Lifetime US1698081A (en)

Priority Applications (1)

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US144062A US1698081A (en) 1926-10-25 1926-10-25 Metallic floor joist

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2546232A (en) * 1946-07-15 1951-03-27 Fairbanks Morse & Co Vehicle underframe and fabrication of members thereof
US5592848A (en) * 1991-06-03 1997-01-14 Bodnar; Ernest R. Method of simultaneously forming a pair of sheet metal structural members
US6122888A (en) * 1991-06-03 2000-09-26 Rotary Press Systems Inc. Construction panel and method of constructing a level portion of a building
US20070175149A1 (en) * 2006-01-17 2007-08-02 Bodnar Ernest R Stud with lengthwise indented ribs and method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2546232A (en) * 1946-07-15 1951-03-27 Fairbanks Morse & Co Vehicle underframe and fabrication of members thereof
US5592848A (en) * 1991-06-03 1997-01-14 Bodnar; Ernest R. Method of simultaneously forming a pair of sheet metal structural members
US6122888A (en) * 1991-06-03 2000-09-26 Rotary Press Systems Inc. Construction panel and method of constructing a level portion of a building
US20070175149A1 (en) * 2006-01-17 2007-08-02 Bodnar Ernest R Stud with lengthwise indented ribs and method

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