EP0285787A1 - Planche d'échafaudage - Google Patents

Planche d'échafaudage Download PDF

Info

Publication number
EP0285787A1
EP0285787A1 EP88102641A EP88102641A EP0285787A1 EP 0285787 A1 EP0285787 A1 EP 0285787A1 EP 88102641 A EP88102641 A EP 88102641A EP 88102641 A EP88102641 A EP 88102641A EP 0285787 A1 EP0285787 A1 EP 0285787A1
Authority
EP
European Patent Office
Prior art keywords
longitudinal
plank
layers
ribs
plate
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.)
Granted
Application number
EP88102641A
Other languages
German (de)
English (en)
Other versions
EP0285787B1 (fr
Inventor
Karl Moser
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT88102641T priority Critical patent/ATE62521T1/de
Publication of EP0285787A1 publication Critical patent/EP0285787A1/fr
Application granted granted Critical
Publication of EP0285787B1 publication Critical patent/EP0285787B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/15—Scaffolds primarily resting on the ground essentially comprising special means for supporting or forming platforms; Platforms
    • E04G1/151—Platforms made of wood, with or without reinforcements

Definitions

  • the invention relates to a scaffold plank according to the preamble of claim 1.
  • Scaffolding planks with a high load-bearing capacity often have a metal frame that is filled or covered with solid wood planks, or consist entirely of metal.
  • Box screeds of this type comprise two plywood cover sheets which are connected to one another by a plurality of longitudinally extending full-length wooden webs, and likewise have a bond by solid wood strips at the two ends. The outer solid wood webs are flush with the long edges of the plywood panels.
  • a disadvantage of this box screed is that its interior is not accessible, so that moisture damage due to water penetration can only be detected with difficulty.
  • the scaffold plank according to the invention consists exclusively of plywood, the layers of which are connected to one another over a large area, for example glued.
  • the scaffold plank has a substantially rectangular, elongated plank plate which, on its lower side in use, has a plurality of reinforcing ribs running parallel to one another in the longitudinal direction.
  • the layer structure of both the screed plate and the reinforcing ribs each comprises a plurality of immediately successive layers of wood, the grain of which is in the longitudinal direction of the screed plate runs.
  • the screed plate for transverse stiffening symmetrically to its layer structure comprises additional wood layers with a fiber direction running in the transverse direction of the screed plate
  • the stiffening ribs expediently consist exclusively of wood layers with a longitudinal fiber direction.
  • the transverse wooden layers of the screed plate ensure sufficient cross strength of the screed plate. Expediently, not only between these transverse wooden layers, but also on both sides outside of these layers, several immediately successive wooden layers with a longitudinal fiber direction are arranged.
  • the symmetrical structure of the screed plate prevents warping. At the same time, extraordinarily high load values can be achieved, for which considerably thicker planks were required with conventional wooden scaffolding planks, or scaffolding planks made of metal had to be used.
  • the reinforcing ribs expediently engage in complementarily shaped longitudinal grooves on the underside of the plank plate.
  • the reinforcing ribs preferably carry a plurality of ribs which run alongside one another in the longitudinal direction and engage in assigned longitudinal grooves in the screed plate.
  • the longitudinal ribs increase the shear and tensile strength of the connection.
  • the longitudinal grooves only penetrate the longitudinal wooden layers located outside the lowest, transverse wooden layer, in order not to impair the transverse load-bearing properties of the plank board.
  • the longitudinal ribs are arranged symmetrically with respect to the layer structure of the reinforcing ribs, in particular if the transverse as well sectional shape of the longitudinal ribs is symmetrical to the layer structure. In this way, forces introduced via the longitudinal ribs can be distributed particularly evenly over the reinforcing rib. This applies in particular when the longitudinal ribs have a trapezoidal shape in cross-section and especially when the flank surfaces of the longitudinal ribs are each formed by a single layer of wood.
  • the reinforcing ribs run at a distance from the longitudinal edge of the screed plate.
  • the protrusion of the screed plate ensures sufficient strength of the connection area and also protects the reinforcement rib from an obliquely impact, such as might occur if the scaffold plank is thrown during assembly or disassembly of the scaffold or falls from a greater height.
  • the scaffold plank shown in Fig. 1 comprises a substantially rectangular, elongated screed plate 1, which carries on its narrow sides fittings 3 for the usual attachment to scaffold ladders or the like.
  • One of the fittings 3 is only indicated by a dashed line in FIG. 1 for better clarification of the overall structure of the scaffold plank.
  • the reinforcing ribs 7 all run at a distance from the longitudinal edges 5 of the screed plate 1, so that they are protected from transverse impacts by the resulting overhang 9.
  • the reinforcing ribs 7 extend essentially over the entire length of the screed plate 1 and are firmly connected to the screed plate 1 over their entire length.
  • the reinforcing ribs 7 can have a constant cross section over their entire length or can be provided with a reinforcing cross section towards the longitudinal center. If the shape of the fittings 3 requires, the longitudinal ribs can end before these fittings or they can be anchored in the fittings.
  • the plank board 1 consists of a symmetrically constructed plywood board.
  • the plywood panel comprises two layers of wood 11, the fibers of which extend in the plane of the panel and extend transversely to the longitudinal direction of the plank panel 1. Between the layers 11 there are several, here three, immediately successive wooden layers 13, the fibers of which extend in the plane of the board in the longitudinal direction of the plank board 1.
  • the lower layer 11 is covered by two immediately successive layers of wood 17, the fibers of which extend in the plane of the board and extend in the longitudinal direction of the plank board 1.
  • the symmetrical layer structure ensures a very high tensile load in the longitudinal direction and sufficient transverse load. The symmetrical structure prevents the plate from being warped.
  • the reinforcing ribs 7 also consist of a layer Wood with a plurality of layers 19, the fibers of which run exclusively approximately parallel to the plane of the plank 1 in the longitudinal direction thereof.
  • the layers 19 follow one another directly and extend perpendicular to the plane of the screed plate 1.
  • Symmetrical to the layer structure of the reinforcing ribs 7, the reinforcing ribs 7 are provided with a plurality of longitudinal ribs 21 running alongside one another in the longitudinal direction of the screed plate 1.
  • the longitudinal ribs 21 have a trapezoidal shape, as seen in cross section, and engage in complementary longitudinal grooves 23, in the layers 17 of the screed plate 1 covering the lower layer 11.
  • the longitudinal ribs 21 are arranged so that their cross-sectional shape is symmetrical with the layer structure of the reinforcing ribs 7 and in particular the groove flanks each intersect a single one of the layers 19.
  • the depth of the longitudinal grooves 23 is chosen so that the longitudinal grooves extend substantially to the lower layer 11, but do not weaken this layer.
  • each of the reinforcing ribs 7 consists of eleven layers 19 immediately following one another and comprises three longitudinal ribs 21 which each extend over three of the layers 19 and are separated from one another by a layer.
  • the width of the projection 9 is substantially equal to the thickness of the layer structure of the reinforcing ribs 7.
  • the individual layers of the screed plate 1 and the reinforcing ribs 7 have a thickness of 3 mm, for example, so that the total thickness of the screed plate is approximately 27 mm and the thickness of the reinforcing ribs is approximately 33 mm.
  • the height of the reinforcing ribs can be, for example, 40 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Gloves (AREA)
  • Ladders (AREA)
  • Road Paving Structures (AREA)
EP88102641A 1987-04-02 1988-02-23 Planche d'échafaudage Expired - Lifetime EP0285787B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88102641T ATE62521T1 (de) 1987-04-02 1988-02-23 Geruestbohle.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8704891U 1987-04-02
DE8704891U DE8704891U1 (de) 1987-04-02 1987-04-02 Gerüstbohle

Publications (2)

Publication Number Publication Date
EP0285787A1 true EP0285787A1 (fr) 1988-10-12
EP0285787B1 EP0285787B1 (fr) 1991-04-10

Family

ID=6806616

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88102641A Expired - Lifetime EP0285787B1 (fr) 1987-04-02 1988-02-23 Planche d'échafaudage

Country Status (3)

Country Link
EP (1) EP0285787B1 (fr)
AT (1) ATE62521T1 (fr)
DE (2) DE8704891U1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2710933A1 (fr) * 1993-10-05 1995-04-14 Mathis Paul Henri Elément de construction universel en bois.
DE19713464A1 (de) * 1996-04-09 1997-11-06 Klaus Dipl Ing Buerger Belagbohle für Baugerüste aus Schichtholz
US6202789B1 (en) 1995-10-31 2001-03-20 Joseph Honein Composite scaffolding plank including natural wooden and laminated wooden boards and method of forming same
US6318499B1 (en) 1995-10-31 2001-11-20 Joseph Honein Composite scaffolding plank including natural wooden and laminated wooden boards and methods of forming same
US7431129B2 (en) 1995-10-31 2008-10-07 Joseph Honein Composite scaffolding plank and method of forming same

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8800566U1 (de) * 1988-01-19 1988-03-17 Moser, Karl, 8890 Aichach Konstruktionseinheit für ein Gebäude
DE8800567U1 (de) * 1988-01-19 1988-03-17 Moser, Karl, 8890 Aichach Tragplatte
DE19739787C2 (de) * 1997-09-10 1999-09-02 Klafs Saunabau Blockbohlen-Sauna
FR2780092B1 (fr) * 1998-06-18 2000-10-13 Hubert Marc Rouchon Chevalet, echelle arboricole triangulaire munie d'un pied

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1071921A (fr) * 1952-12-09 1954-09-07 Perfectionnements aux constructions planes
GB961344A (en) * 1960-12-09 1964-06-17 Josef Wolff Improvements in or relating to wooden beams, particularly of i-section
AT329257B (de) * 1971-01-26 1976-05-10 Oesterr Doka Schalung Holzplatte
DE2943530A1 (de) * 1979-10-27 1981-05-07 Asko-Upo Oy, Lathi Kastenelement aus sperrholz
GB2106561A (en) * 1981-09-21 1983-04-13 Oesterr Doka Schalung Wooden girder

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7540187U (de) * 1975-12-17 1976-05-26 Aluminium-Walzwerke Singen Gmbh, 7700 Singen Geruestbohle in verbundbauweise
DE3444666A1 (de) * 1984-12-07 1986-06-12 Hünnebeck GmbH, 4030 Ratingen Hohlkastentafel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1071921A (fr) * 1952-12-09 1954-09-07 Perfectionnements aux constructions planes
GB961344A (en) * 1960-12-09 1964-06-17 Josef Wolff Improvements in or relating to wooden beams, particularly of i-section
AT329257B (de) * 1971-01-26 1976-05-10 Oesterr Doka Schalung Holzplatte
DE2943530A1 (de) * 1979-10-27 1981-05-07 Asko-Upo Oy, Lathi Kastenelement aus sperrholz
GB2106561A (en) * 1981-09-21 1983-04-13 Oesterr Doka Schalung Wooden girder

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2710933A1 (fr) * 1993-10-05 1995-04-14 Mathis Paul Henri Elément de construction universel en bois.
US6202789B1 (en) 1995-10-31 2001-03-20 Joseph Honein Composite scaffolding plank including natural wooden and laminated wooden boards and method of forming same
US6318499B1 (en) 1995-10-31 2001-11-20 Joseph Honein Composite scaffolding plank including natural wooden and laminated wooden boards and methods of forming same
US7431129B2 (en) 1995-10-31 2008-10-07 Joseph Honein Composite scaffolding plank and method of forming same
DE19713464A1 (de) * 1996-04-09 1997-11-06 Klaus Dipl Ing Buerger Belagbohle für Baugerüste aus Schichtholz
DE19713464C2 (de) * 1996-04-09 1999-10-21 Klaus Buerger Belagbohle für Baugerüste aus Schichtholz

Also Published As

Publication number Publication date
EP0285787B1 (fr) 1991-04-10
ATE62521T1 (de) 1991-04-15
DE8704891U1 (de) 1987-05-27
DE3862333D1 (de) 1991-05-16

Similar Documents

Publication Publication Date Title
DE10101202A1 (de) Pakettplatte
EP3247842B1 (fr) Poutres de coffrage et construction de coffrage
EP0285787B1 (fr) Planche d'échafaudage
DE3229262C2 (de) Plattenförmiges Bauelement aus Holz
DE3017332A1 (de) Bauelement, insbesondere dachbauelement
CH670671A5 (fr)
WO1998000617A2 (fr) Systeme d'element de construction pour plafonds, parois, toitures ou similaires
AT401791B (de) Verbundplatte mit wenigstens einer deckschicht aus holz
DE3028103A1 (de) Holztraeger
DE1909457C3 (de) Betonschalung
DE3417321A1 (de) Plattenfoermiges bauelement zur universellen herstellung von demontierbaren boeden aller art
DE29517458U1 (de) Gerüstbohle
AT401544B (de) Gerüstbrett
AT503224A2 (de) Holzbautafel
EP0209895B1 (fr) Panneau de plancher pour faux planchers surélevés
EP2989263A1 (fr) Structure de plafond et bâtiment en bois
DE2649576A1 (de) Schwalbenschwanzverbindung bzw. lasttragender bauteil mit selbstklemmvernutung
AT501630A1 (de) Bohle und wandelement
DE29501817U1 (de) Holz-Fußboden
DE949524C (de) Tragfaehiges Grossbauelement
EP1148181B1 (fr) Poutre en bois
DE889689C (de) Hoelzerne, vor allem als Fussbodenbelag zu verwendende mehrschichtige Diele
AT386639B (de) Rechteckige, insb. quadratische boden- oder paneelplatte aus holz
WO2021121610A1 (fr) Panneau composite et structure de construction comportant au moins un panneau composite
DE2432265A1 (de) Freitragende treppe

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT CH DE FR LI

17P Request for examination filed

Effective date: 19890203

17Q First examination report despatched

Effective date: 19900622

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE FR LI

REF Corresponds to:

Ref document number: 62521

Country of ref document: AT

Date of ref document: 19910415

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3862333

Country of ref document: DE

Date of ref document: 19910516

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19981116

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19981214

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19990119

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19990129

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000223

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000229

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000229

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001201

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST