EP0851069B1 - A profiled sheet-metal roofing element for buildings - Google Patents

A profiled sheet-metal roofing element for buildings Download PDF

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Publication number
EP0851069B1
EP0851069B1 EP19970121054 EP97121054A EP0851069B1 EP 0851069 B1 EP0851069 B1 EP 0851069B1 EP 19970121054 EP19970121054 EP 19970121054 EP 97121054 A EP97121054 A EP 97121054A EP 0851069 B1 EP0851069 B1 EP 0851069B1
Authority
EP
European Patent Office
Prior art keywords
rib
sheet
vertical
metal element
metal
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
EP19970121054
Other languages
German (de)
French (fr)
Other versions
EP0851069A3 (en
EP0851069A2 (en
Inventor
Lodovico Benedicti
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.)
BENEDICTI, LUDOVICO
Original Assignee
Lodovico Benedicti
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 Lodovico Benedicti filed Critical Lodovico Benedicti
Publication of EP0851069A2 publication Critical patent/EP0851069A2/en
Publication of EP0851069A3 publication Critical patent/EP0851069A3/en
Application granted granted Critical
Publication of EP0851069B1 publication Critical patent/EP0851069B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
    • E04D3/36—Connecting; Fastening
    • E04D3/361—Connecting; Fastening by specially-profiled marginal portions of the slabs or sheets
    • E04D3/363—Connecting; Fastening by specially-profiled marginal portions of the slabs or sheets with snap action
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
    • E04D3/24—Roof covering by making use of flat or curved slabs or stiff sheets with special cross-section, e.g. with corrugations on both sides, with ribs, flanges, or the like
    • E04D3/30—Roof covering by making use of flat or curved slabs or stiff sheets with special cross-section, e.g. with corrugations on both sides, with ribs, flanges, or the like of metal

Definitions

  • the present invention relates to a profiled sheet-metal roofing element for buildings.
  • a profiled sheet-metal roofing element for buildings known from Italian utility model No. 209011 has:
  • the first inverted U-shaped rib has, in cross-section, two inclined sides which diverge downwardly from its upper surface.
  • This shape involves the risk that, in the event of substantial vertical loads being applied to the roofing (for example, due to a large depth of snow or to its being trodden on) this rib tends to open out until its vertical flange is disengaged from the retaining tooth of the adjacent sheet-metal element, thus prejudicing the stability of the roofing.
  • the subject of the present invention is a profiled sheet-metal element of the type specified above, the main characteristic of which lies in the fact that the first, inverted U-shaped rib has, in cross-section, an upper, substantially arcuate portion and a lower portion comprising two flat sides inclined to the vertical so as to converge downwardly, the lower edges of said two flat sides lying both at a level which corresponds to the level of the main central flat portion of said sheet-metal element.
  • the element 1 has, at one end, a transverse rib 3 having, in section, a substantially inverted U-shaped profile with an upper substantially arcuate portion.
  • This upper portion has a convex top portion 4 and two side walls 5 also having convex profiles and connected to the top portion 4 by two short substantially vertical portions 6.
  • Two flat side walls 7 extending downwardly from the lower ends of the convex side walls 5 are inclined to the vertical so as to converge downwardly.
  • the inclination of the walls 7 to a vertical plane may be, for example, of the order of 15°.
  • the rib 3 At the base of the inclined wall 7 which is situated on the outer side of the element 1, the rib 3 has a portion 8 which is bent horizontally towards the interior of the rib 3 and an end flange 9 which is bent vertically.
  • the sheet-metal element 1 In the vicinity of its opposite end to the rib 3, the sheet-metal element 1 has an engagement rib 10 which is not as high as the rib 3.
  • the engagement rib 10 comprises a shank constituted by two vertical portions 11 and an enlarged head 12 facing the interior of the element 1 to form a retaining tooth.
  • the sheet-metal element 1 has an end portion 13 which extends beyond the engagement rib 10.
  • the end portion 13 of the sheet-metal element 1 is fixed by means of screws 14 or equivalent fixing means, to the purlins 15 on which the roofing bears.
  • the hollow rib 3 of an adjacent sheet-metal element is then engaged on the engagement rib 10 of the element 1 so as to engage its vertical flange 9 against the lower surface of the engagement tooth 12.
  • the joint thus formed between two successive sheet-metal elements involves no risk of disengagement, even under the effect of large vertical loads applied to the roofing.
  • the rib 3 tends to close up under the effect of such loads, so that the lower surface of the retaining tooth 12 of the rib 10 fixed to the battens supporting the roofing is clamped more tightly.
  • the curved profile of the upper portion of the rib 3 ensures better distribution of vertical loads applied and the central portion 4 connected to the two curved side portions 5 by the short vertical portions 6 achieves a guiding effect in the profiling of the sheet-metal element, as well as constituting a stiffening.

Description

  • The present invention relates to a profiled sheet-metal roofing element for buildings.
  • A profiled sheet-metal roofing element for buildings known from Italian utility model No. 209011 has:
    • a first, inverted U-shaped transverse rib which extends on one of the end edges, the outer edge of the rib being bent inwardly to form a vertical flange,
    • a second transverse rib which is situated adjacent the other end edge and is not as high as the first rib, the second rib comprising a vertical shank and a head in the form of an inwardly-facing retaining tooth, projecting towards the first rib, the portion of sheet metal disposed between the second rib and the other end edge of the sheet-metal element being intended to house means for fixing to the support structure of the roofing, the fixing means being covered, in conditions of use, by the first rib of the adjacent element which engages the second rib forming a fixed joint with its vertical flange disposed under the projection of the retaining tooth, and
    • a main central and substantially flat portion extending between the first rib and the second rib.
  • In the profiled sheet-metal element according to the utility model cited above, the first inverted U-shaped rib has, in cross-section, two inclined sides which diverge downwardly from its upper surface.
  • This shape involves the risk that, in the event of substantial vertical loads being applied to the roofing (for example, due to a large depth of snow or to its being trodden on) this rib tends to open out until its vertical flange is disengaged from the retaining tooth of the adjacent sheet-metal element, thus prejudicing the stability of the roofing.
  • In order to prevent this problem, the subject of the present invention is a profiled sheet-metal element of the type specified above, the main characteristic of which lies in the fact that the first, inverted U-shaped rib has, in cross-section, an upper, substantially arcuate portion and a lower portion comprising two flat sides inclined to the vertical so as to converge downwardly, the lower edges of said two flat sides lying both at a level which corresponds to the level of the main central flat portion of said sheet-metal element.
  • Because of this shape, vertical loads applied to the rib tend to close the rib up (rather than opening it out), clamping its vertical flange more tightly against the lower surface of the retaining tooth of the adjacent sheet-metal element.
  • Further characteristics of the invention will become clear from the following description given with reference to the appended drawings, provided purely by way of non-limiting example, in which:
  • Figure 1 is a side view of a profiled sheet-metal roofing element for buildings according to the present invention, and
  • Figure 2 shows a joint between two elements of the type shown in Figure 1, on an enlarged scale and in longitudinal section.
  • A profiled sheet-metal roofing element for buildings, having quadrangular ribs 2 disposed at intervals, is indicated 1.
  • The element 1 has, at one end, a transverse rib 3 having, in section, a substantially inverted U-shaped profile with an upper substantially arcuate portion.
  • This upper portion has a convex top portion 4 and two side walls 5 also having convex profiles and connected to the top portion 4 by two short substantially vertical portions 6.
  • Two flat side walls 7 extending downwardly from the lower ends of the convex side walls 5 are inclined to the vertical so as to converge downwardly. The inclination of the walls 7 to a vertical plane may be, for example, of the order of 15°.
  • At the base of the inclined wall 7 which is situated on the outer side of the element 1, the rib 3 has a portion 8 which is bent horizontally towards the interior of the rib 3 and an end flange 9 which is bent vertically.
  • In the vicinity of its opposite end to the rib 3, the sheet-metal element 1 has an engagement rib 10 which is not as high as the rib 3.
  • The engagement rib 10 comprises a shank constituted by two vertical portions 11 and an enlarged head 12 facing the interior of the element 1 to form a retaining tooth.
  • The sheet-metal element 1 has an end portion 13 which extends beyond the engagement rib 10.
  • As shown in Figure 2, the end portion 13 of the sheet-metal element 1 is fixed by means of screws 14 or equivalent fixing means, to the purlins 15 on which the roofing bears.
  • The hollow rib 3 of an adjacent sheet-metal element is then engaged on the engagement rib 10 of the element 1 so as to engage its vertical flange 9 against the lower surface of the engagement tooth 12.
  • The joint thus formed between two successive sheet-metal elements involves no risk of disengagement, even under the effect of large vertical loads applied to the roofing.
  • In fact, by virtue of the downward convergence of its lower side walls 7, the rib 3 tends to close up under the effect of such loads, so that the lower surface of the retaining tooth 12 of the rib 10 fixed to the battens supporting the roofing is clamped more tightly.
  • The curved profile of the upper portion of the rib 3 ensures better distribution of vertical loads applied and the central portion 4 connected to the two curved side portions 5 by the short vertical portions 6 achieves a guiding effect in the profiling of the sheet-metal element, as well as constituting a stiffening.

Claims (3)

  1. A profiled sheet-metal roofing element (1) for buildings comprising:
    a first, inverted U-shaped transverse rib (3) which extends on one of the end edges, the outer edge of the rib being bent inwardly to form a vertical flange (9),
    a second transverse rib (10) which is situated adjacent the other end edge and is not as high as the first rib (3), the second rib (10) comprising a vertical shank (11) and a head (12) in the form of an inwardly-facing retaining tooth, projecting towards the first rib (3), a portion of sheet metal disposed between the second rib (10) and the other end edge of the sheet-metal element being intended to house means for fixing to the support structure of the roofing, the fixing means (14) being covered, in conditions of use, by the first rib (3) of the adjacent element which engages the second rib (10) forming a fixed joint with its vertical flange (9) disposed under the projection of the retaining tooth, and
    a main central and substantially flat portion extending between the first rib (3) and the second rib (10),
    characterized in that the first, inverted U-shaped rib (3) has, in cross-section, an upper substantially arcuate portion (4, 5, 6) and a lower portion comprising two flat sides (7) inclined to the vertical so as to converge downwardly; the lower edges of said two flat sides (7) lying both at a level which corresponds to the level of the main central flat portion of said sheet-metal element (1).
  2. A sheet-metal element according to Claim 1, characterized in that the two flat sides (7) are inclined at an angle of the order of 15° to the vertical.
  3. A sheet-metal element according to Claim 1, characterized in that the upper portion of the first rib (3) comprises a convex top portion (4) and two convex side walls (5) connected to the top portion (4) by means of two short substantially vertical portions (6).
EP19970121054 1996-12-23 1997-12-01 A profiled sheet-metal roofing element for buildings Expired - Lifetime EP0851069B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO960262U 1996-12-23
IT96TO000262 IT239877Y1 (en) 1996-12-23 1996-12-23 CORRUGATED SHEET ELEMENT FOR THE COVERING OF BUILDINGS

Publications (3)

Publication Number Publication Date
EP0851069A2 EP0851069A2 (en) 1998-07-01
EP0851069A3 EP0851069A3 (en) 1999-06-16
EP0851069B1 true EP0851069B1 (en) 2003-02-19

Family

ID=11414531

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970121054 Expired - Lifetime EP0851069B1 (en) 1996-12-23 1997-12-01 A profiled sheet-metal roofing element for buildings

Country Status (4)

Country Link
EP (1) EP0851069B1 (en)
DE (1) DE69719162T2 (en)
ES (1) ES2192247T3 (en)
IT (1) IT239877Y1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202004021674U1 (en) * 2004-10-23 2010-06-10 Kreusel, Ulrich Cover for an area of balconies, floors, roofs or facades
FR2931497B1 (en) * 2008-05-20 2010-04-30 Arcelormittal Construction France METALLIC PROFILE

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1321562A (en) * 1962-02-08 1963-03-22 Assembly of plates by their ribbed side edges
DE8907783U1 (en) * 1989-06-26 1989-11-02 Pradel, Hartmund, 8226 Altenmarkt, De
US5519974A (en) * 1994-08-19 1996-05-28 Crown Partnership Standing seam roofing panel

Also Published As

Publication number Publication date
ITTO960262U1 (en) 1998-06-23
EP0851069A3 (en) 1999-06-16
DE69719162D1 (en) 2003-03-27
ES2192247T3 (en) 2003-10-01
IT239877Y1 (en) 2001-03-13
DE69719162T2 (en) 2003-10-09
EP0851069A2 (en) 1998-07-01

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