Classifications

• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
  • E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
  • E04B2/76—Removable non-load-bearing partitions; Partitions with a free upper edge with framework or posts of metal
  • E04B2/78—Removable non-load-bearing partitions; Partitions with a free upper edge with framework or posts of metal characterised by special cross-section of the frame members as far as important for securing wall panels to a framework with or without the help of cover-strips
  • E04B2/7854—Removable non-load-bearing partitions; Partitions with a free upper edge with framework or posts of metal characterised by special cross-section of the frame members as far as important for securing wall panels to a framework with or without the help of cover-strips of open profile
• • 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
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
  • E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
  • E04B2/76—Removable non-load-bearing partitions; Partitions with a free upper edge with framework or posts of metal
  • E04B2/78—Removable non-load-bearing partitions; Partitions with a free upper edge with framework or posts of metal characterised by special cross-section of the frame members as far as important for securing wall panels to a framework with or without the help of cover-strips
  • E04B2/7854—Removable non-load-bearing partitions; Partitions with a free upper edge with framework or posts of metal characterised by special cross-section of the frame members as far as important for securing wall panels to a framework with or without the help of cover-strips of open profile
  • E04B2/7881—Removable non-load-bearing partitions; Partitions with a free upper edge with framework or posts of metal characterised by special cross-section of the frame members as far as important for securing wall panels to a framework with or without the help of cover-strips of open profile of substantially S - or Z - section; having a shape or cross-section adapted for gripping or overlapping panels by means of at least partially complementary shaped parallel elements
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
  • E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
  • E04B2/76—Removable non-load-bearing partitions; Partitions with a free upper edge with framework or posts of metal
  • E04B2/78—Removable non-load-bearing partitions; Partitions with a free upper edge with framework or posts of metal characterised by special cross-section of the frame members as far as important for securing wall panels to a framework with or without the help of cover-strips
  • E04B2/7854—Removable non-load-bearing partitions; Partitions with a free upper edge with framework or posts of metal characterised by special cross-section of the frame members as far as important for securing wall panels to a framework with or without the help of cover-strips of open profile
  • E04B2/789—Removable non-load-bearing partitions; Partitions with a free upper edge with framework or posts of metal characterised by special cross-section of the frame members as far as important for securing wall panels to a framework with or without the help of cover-strips of open profile of substantially U- or C- section
• • 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
  • E04C2003/0434—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
  • E04C2003/0473—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
  • E04C2003/0404—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
  • E04C2003/0482—Z- or S-shaped

Definitions

• the invention relates to structural elements of the type comprising a web extending between a pair of flanges.
• Such structural elements are generally of roll formed steel section.
• the thickness of the section may be increased to improve structural properties.
• a structural element comprising a web and at least one flange extending from the web, the element comprising a plurality of curved stiffening ribs extending along the longitudinal length of the element, the ribs being formed in the structural element at regions of structural importance of the element without substantially reducing the wall thickness, the pitch of the ribs being from 2 to 8 times the wall thickness of the structural element.
• the pitch of the ribs is from 3 to 7 times the wall thickness of the structural element.
• the pitch of the ribs is from 3mm to 8mm.
• the pitch of the ribs is from 3.8mm to 7.8mm.
• the depth of the ribs is from 1.5 to 3 times the wall thickness of the structural element.
• the bend radius of the ribs is from 0.5 to 3 times the wall thickness of the structural element.
• the bend radius of the ribs is substantially equal to the wall thickness of the structural element.
• the rib has a bottom radius which subtends an arc of between 20° and 128°. Preferably the radius subtends an arc of between 70° and 100°.
• the structural element comprises a pair of flanges and the web extends between the flanges.
• the ribs are provided in the or each flange of the structural element.
• ribs are provided on the web of the structural element.
• the ribs are provided adjacent a corner portion between the web and at least one of the flanges.
• the ribs are provided adjacent corner portions between the web and the flanges.
• the flanges extend from the web in the same direction.
• the flanges extend from the web in opposite directions.
• the web is substantially straight.
• the web has one or more bends therein.
• Fig. 1 is a cross sectional view of a structural element according to the invention
• Fig. la is an enlarged view of a rib detail of the structural element
• Fig. lb is an enlarged view showing a detail of a single rib.
• Fig. 2 is a cross sectional view of another structural element
• Fig. 3 is a cross sectional view of a further structural element.
• Fig. 4 is a cross sectional view of another structural element according to the invention.
• the structural element 1 has a generally C-profile comprising a web 2 extending between a pair of flanges 3, 4 which in this case extend generally at right angles to the web 2 from the same side of the web.
• the areas of particular structural importance are the portions 5, 6 of the web and flanges adjacent to the junction between the web and the flanges.
• material is gathered into these structurally important areas of an otherwise thin component. This is achieved by forming a plurality of small ribs 10 to absorb the material in these structurally important areas 5, 6.
• the ribs 10 are on a pitch which is approximately the same as a typical self drilling, self tapping fastener to prevent skating of the fastener, on fixing.
• the pitch p of the ribs is from 2 to 8 times, most preferably from 3 to 7 times the wall thickness (t) of the structural element.
• the ribs 10 are of a depth x of between 1.5t and 3.0t.
• the bend radius r of the ribs is from 0.5 to 3 times the wall thickness t, most preferably approximately equal to the wall thickness.
• the typical size of fixings used for cladding is between 4.8mm and 6.5mm.
• the pitch p of the ribs should preferably be between 0.8d and 1.2d, where d is the fastener diameter.
• the pitch p should be from about 3 to about 8mm, preferably from 3.8mm to 7.8mm.
• each rib is symmetrical about a longitudinal axis and has lead-in portions defined by arcs and a bottom with a radius which subtends an arc of between 20° and 128°, most preferably 70° to 100°.
• Small ribs of this type may be used in the locality of fixing bolts with a benefit to the bearing capacity of the connection by virtue of the increased area of metal contact with the bolt.
• Such localities comprise the web of the structural element, the bolts being used to fix the web to a cleat.
• the material which would produce a wide flange with the attendant problems described above is condensed into a narrower flange using a plurality of small ribs formed in the flange. A similar effect is achieved in the web.
• FIG. 2 there is illustrated another structural element 20 which is similar to that described with reference to Fig. 1 and like parts are assigned the same reference numerals.
• the web has an indent 21 and the section is of sigma shape.
• FIG. 3 another structural element 30 of zed section is illustrated in which the flanges extend on opposite sides of the web.
• FIG. 4 Another structural element 40 similar to the element of Fig. 3 is illustrated in Fig. 4.
• the web in this case has an indent 41.
• the material of the structural elements is generally galvanised steel.
• the sections may be of a range of different shapes and sizes.
• small ribs could be provided in structurally significant regions of any suitable thin gauge components.
• the invention may be applied to profiled metal sheet decking of the type described in WO 00/04250A. Such ribs could be applied to the flanges of such decking to enhance the deflecting and bending capacity of the decking.

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• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Metal Rolling (AREA)
• Road Paving Structures (AREA)
• Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
• Rod-Shaped Construction Members (AREA)

Applications Claiming Priority (3)

Publications (1)

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ID=29415747

Family Applications (1)

Country Status (6)

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Family Cites Families (4)

• 2003
  • 2003-05-12 PL PL372443A patent/PL209714B1/pl not_active IP Right Cessation
  • 2003-05-12 EP EP03749976A patent/EP1504162A1/en not_active Withdrawn
  • 2003-05-12 IE IE20030355A patent/IE20030355A1/en not_active IP Right Cessation
  • 2003-05-12 GB GB0424637A patent/GB2403742B/en not_active Expired - Lifetime
  • 2003-05-12 AU AU2003266856A patent/AU2003266856A1/en not_active Abandoned
  • 2003-05-12 WO PCT/IE2003/000067 patent/WO2003095758A1/en not_active Ceased

Non-Patent Citations (2)

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