US2574667A - Structural support for roofs and floors - Google Patents

Structural support for roofs and floors Download PDF

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Publication number
US2574667A
US2574667A US750029A US75002947A US2574667A US 2574667 A US2574667 A US 2574667A US 750029 A US750029 A US 750029A US 75002947 A US75002947 A US 75002947A US 2574667 A US2574667 A US 2574667A
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US
United States
Prior art keywords
web
roofs
floors
sub
rail
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Expired - Lifetime
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US750029A
Inventor
Everett C Shuman
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OI Glass Inc
Original Assignee
Owens Illinois Glass Co
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Publication date
Application filed by Owens Illinois Glass Co filed Critical Owens Illinois Glass Co
Priority to US750029A priority Critical patent/US2574667A/en
Application granted granted Critical
Publication of US2574667A publication Critical patent/US2574667A/en
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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
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/17—Floor structures partly formed in situ
    • E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
    • E04B5/29—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated the prefabricated parts of the beams consisting wholly of metal
    • 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
    • E04C2003/0421—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 comprising one single unitary part
    • 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
    • E04C2003/0443—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

Definitions

  • a feature of the present invention consists in providing a sub-purlin which, while of adequate strength and rigidity, is of such light weight per unit of length that mechanical handling is not necessary for usual applications.
  • a further object of the invention is to provide a structural member of the character indicated made of sheet metal and of a form adapted to be shaped from standard metal sheets.
  • a further object is to obtain an efficient distribution of the steel or sheet material having a high section modulus per unit of weight, combined with a low height.
  • a further object of the invention is to provide a sub-purlin adapted to be handled with ease, which will not crush in mechanical handling and which will not roll.
  • a further object is to provide a tile supporting structure which projects a comparatively short distance above the base or loading surface, thereby obtaining low thermal conductivity above the loading surface.
  • a further object attained by such construction consists in reducing to a minimum the tendency for moisture condensation in a high humidity.
  • a further object of the invention is to provide a supporting structure of the character indicated which is shaped and designed to serve as a conduit.
  • a further object of the invention is to provide a structure of the character indicated formed of sheet metal shaped to provide a web of double thickness having the web members welded at intervals in order to increase the rigidity of the structure and fortify it against bending or buckling when subjected to loading and lateral strains.
  • Fig. 1 is a cross-sectional elevation of a portion of a structure embodying my invention.
  • Fig. 2 is a part-sectional end elevation, parts being'broken away, of a modified form of rail or sub-purlin.
  • the structure 9 may be the same as illustrated and described in my co-pending application, S. N. 742,291, filed April 18, 1947, Structural Supporting Members for Roofs and Floors, now
  • sub-purlins II maybe supported in the usual manner by purlins as shown for example, in said co-pending application.
  • the body of the sub-purlin or rail I I as shown in Fig. 1, is in the form of a tube, rectangular in cross section, being substantially square with the corners I2 slightly rounded. It comprise a horizontal base I3, vertical sides I4, and a top including substantially horizontal supporting members I5 providing loading surfaces on which the ends of the tiles rest.
  • the sub-purlin may be formed of standard plates of sheet metal rolled or bent into the shape illustrated.
  • top members I5 Projecting upwardly from the top members I5 and extending lengthwise of the rail, are web portions I6 having their inner faces abutting to form a double ply anchorage web.
  • the web is formed along its upper edge with outwardly and downwardly turned marginal flange portions H.
  • the sub-purlins may be of usual or any desired length and at intervals along the web I6, the two web members are rigidly and securely united as by spot welding I B.
  • the tiles I0 which may be made of calcium silicate or other light-Weight material, may be arranged in rows between the rails and are directly supported on the top or flange portions I5.
  • the adjacent ends of the tiles are spaced a short distance apart with spaces between the web I6 and the ends of the tiles.
  • the space between the tiles is filled with grout 20 or a slurry of cementitious material which sets or hardens to form a rigid structure.
  • the material 2!] which is of low thermal conductivity provides good heat insulation and counteracts the tendency to moisture condensation due to temperature differential between the metal structure and the atmosphere at the surface of the tile.
  • the web I6 with its flange or hook portion I! being embedded in the material 20, provides an anchor by which the tiles are securely held against being lifted out of place by wind storms or other forces.
  • the body of the rail or sub-purlin, being hollow, is adapted to serve as a conduit for drainage or other purposes.
  • Fig. 2 illustrates a modified form of the subpurlin in which the rectangular body is of substantially less depth than width, the side walls ll being of substantially less height than the width of the base I3.
  • the upper marginal portions H of the web [6 are formed by bending such marginal portions downward and then back on themselves.
  • a rail adapted to form a sub-'pu'rlinin .a building structure said rail consisting of a single sheet of metal bent to form a rectangular hollow body comprising a horizontal bottom, vertical sides and a horizontal top, the top consisting of sections formed by bending the sheet naterial inwardly at the upper edges of said sides, the rail including a web extending lengthwise thereof midway between said sid s and formed by bending the sheet material upwardly at the middle of said top, the web consisting of fiat vertical sections having their inner faces in contact throughout to provide a two-ply web, the rail including upper marginal portions extended outwardly from the upper edges of said flat vertical sections to form an anchor.
  • a rail adapted to form a sub-purlin in a building structure consisting of a single sheet of metal comprising an intermediate portion bent to form a tubular body substantially rectangular in cross section and comprising a flat horizontal bottom, vertical sides and horirectangular in cross section and comprising a 1 flat horizontal bottom, vertical sides and horizontal top portions inturned from the sides, and integral web portions extending vertically upward from the inner edges of said inturned portions and having their inner faces in contact to form a two-ply web and terminating in outwardly turned marginal portions extending along the upper edge of the web and projecting outwardly beyond the web, the plies of said web being spotwelded together at intervals along the web.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Floor Finish (AREA)

Description

Nov. 13, 1951 E. c. SHUMAN 2,574,667
STRUCTURAL SUPPORT FOR ROOFS AND FLOORS Filed May 23, 1947 Patented Nov. 13, 1951 UNITED STATES .PATENT OFFICE STRUCTURAL SUPPORT FOR ROOFS AND FLOORS Everett 0. Shuman, Haddonfield, N. J., assignor to Owens-Illinois Glass Company, a corporation of Ohio Application May 23, 1947, Serial No. 750,029
ing materials. The usual supporting bars or members commercially used for such purpose are heavy, uneconomical and otherwise unsuited for such structures. A feature of the present invention consists in providing a sub-purlin which, while of adequate strength and rigidity, is of such light weight per unit of length that mechanical handling is not necessary for usual applications.
A further object of the invention is to provide a structural member of the character indicated made of sheet metal and of a form adapted to be shaped from standard metal sheets.
A further object is to obtain an efficient distribution of the steel or sheet material having a high section modulus per unit of weight, combined with a low height.
A further object of the invention is to provide a sub-purlin adapted to be handled with ease, which will not crush in mechanical handling and which will not roll.
A further object is to provide a tile supporting structure which projects a comparatively short distance above the base or loading surface, thereby obtaining low thermal conductivity above the loading surface.
A further object attained by such construction consists in reducing to a minimum the tendency for moisture condensation in a high humidity.
A further object of the invention is to provide a supporting structure of the character indicated which is shaped and designed to serve as a conduit.
A further object of the invention is to provide a structure of the character indicated formed of sheet metal shaped to provide a web of double thickness having the web members welded at intervals in order to increase the rigidity of the structure and fortify it against bending or buckling when subjected to loading and lateral strains.
Other objects of the invention will appear hereinafter.
Referring to the accompanying drawings:
Fig. 1 is a cross-sectional elevation of a portion of a structure embodying my invention; and
4 Claims. (01. 189-34) Fig. 2 is a part-sectional end elevation, parts being'broken away, of a modified form of rail or sub-purlin.
Referring to Fig. 1, I have shown a structure 9 built of tiles It! supported on rails or sub-purlins II. The structure 9 may be the same as illustrated and described in my co-pending application, S. N. 742,291, filed April 18, 1947, Structural Supporting Members for Roofs and Floors, now
abandoned.
In the present invention, the sub-purlins II maybe supported in the usual manner by purlins as shown for example, in said co-pending application.
The body of the sub-purlin or rail I I as shown in Fig. 1, is in the form of a tube, rectangular in cross section, being substantially square with the corners I2 slightly rounded. It comprise a horizontal base I3, vertical sides I4, and a top including substantially horizontal supporting members I5 providing loading surfaces on which the ends of the tiles rest. The sub-purlin may be formed of standard plates of sheet metal rolled or bent into the shape illustrated.
Projecting upwardly from the top members I5 and extending lengthwise of the rail, are web portions I6 having their inner faces abutting to form a double ply anchorage web. The web is formed along its upper edge with outwardly and downwardly turned marginal flange portions H. The sub-purlins may be of usual or any desired length and at intervals along the web I6, the two web members are rigidly and securely united as by spot welding I B.
The tiles I0, which may be made of calcium silicate or other light-Weight material, may be arranged in rows between the rails and are directly supported on the top or flange portions I5. The adjacent ends of the tiles are spaced a short distance apart with spaces between the web I6 and the ends of the tiles. The space between the tiles is filled with grout 20 or a slurry of cementitious material which sets or hardens to form a rigid structure. The material 2!] which is of low thermal conductivity provides good heat insulation and counteracts the tendency to moisture condensation due to temperature differential between the metal structure and the atmosphere at the surface of the tile. The web I6 with its flange or hook portion I! being embedded in the material 20, provides an anchor by which the tiles are securely held against being lifted out of place by wind storms or other forces. The body of the rail or sub-purlin, being hollow, is adapted to serve as a conduit for drainage or other purposes.
Fig. 2 illustrates a modified form of the subpurlin in which the rectangular body is of substantially less depth than width, the side walls ll being of substantially less height than the width of the base I3. The upper marginal portions H of the web [6 are formed by bending such marginal portions downward and then back on themselves.
Modification may be resorted to within the spirit and scope of my invention.
I claim:
1. A rail adapted to form a sub-'pu'rlinin .a building structure, said rail consisting of a single sheet of metal bent to form a rectangular hollow body comprising a horizontal bottom, vertical sides and a horizontal top, the top consisting of sections formed by bending the sheet naterial inwardly at the upper edges of said sides, the rail including a web extending lengthwise thereof midway between said sid s and formed by bending the sheet material upwardly at the middle of said top, the web consisting of fiat vertical sections having their inner faces in contact throughout to provide a two-ply web, the rail including upper marginal portions extended outwardly from the upper edges of said flat vertical sections to form an anchor.
2. The rail defined in claim 1 wherein .the plies of said web are spot-welded together at intervals along the web.
3. A rail adapted to form a sub-purlin in a building structure, said rail consisting of a single sheet of metal comprising an intermediate portion bent to form a tubular body substantially rectangular in cross section and comprising a flat horizontal bottom, vertical sides and horirectangular in cross section and comprising a 1 flat horizontal bottom, vertical sides and horizontal top portions inturned from the sides, and integral web portions extending vertically upward from the inner edges of said inturned portions and having their inner faces in contact to form a two-ply web and terminating in outwardly turned marginal portions extending along the upper edge of the web and projecting outwardly beyond the web, the plies of said web being spotwelded together at intervals along the web.
EVERETT C. SHUMAN.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 1,865,131 Olsen June 28, 1932 1,947,401 Birdsey Feb. 13, 19:34 1,971,160 Lenke Aug. 21, 1934 2,309,420 Taylor Jan. 26, 1943
US750029A 1947-05-23 1947-05-23 Structural support for roofs and floors Expired - Lifetime US2574667A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3054481A (en) * 1959-02-25 1962-09-18 Metal Buildings Inc Prefabricated building
FR2162151A1 (en) * 1971-12-03 1973-07-13 British Steel Corp
US4729201A (en) * 1982-08-13 1988-03-08 Hambro Structural Systems Ltd. Double top chord
US5651225A (en) * 1995-10-31 1997-07-29 Leeks; Allan T. Device and method for joining and supporting pieces of sheet material

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1865131A (en) * 1928-01-06 1932-06-28 Anders C Olsen Metallic ceiling construction
US1947401A (en) * 1928-11-26 1934-02-13 United States Gypsum Co Floor and ceiling construction
US1971160A (en) * 1932-06-20 1934-08-21 Julius J Ohlis Skylight construction
US2309420A (en) * 1941-04-11 1943-01-26 Francis M Taylor Furring bracket

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1865131A (en) * 1928-01-06 1932-06-28 Anders C Olsen Metallic ceiling construction
US1947401A (en) * 1928-11-26 1934-02-13 United States Gypsum Co Floor and ceiling construction
US1971160A (en) * 1932-06-20 1934-08-21 Julius J Ohlis Skylight construction
US2309420A (en) * 1941-04-11 1943-01-26 Francis M Taylor Furring bracket

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3054481A (en) * 1959-02-25 1962-09-18 Metal Buildings Inc Prefabricated building
FR2162151A1 (en) * 1971-12-03 1973-07-13 British Steel Corp
US4729201A (en) * 1982-08-13 1988-03-08 Hambro Structural Systems Ltd. Double top chord
US5651225A (en) * 1995-10-31 1997-07-29 Leeks; Allan T. Device and method for joining and supporting pieces of sheet material

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