EP0451161A1 - Fond ignifuge en poutres de bois - Google Patents

Fond ignifuge en poutres de bois

Info

Publication number
EP0451161A1
EP0451161A1 EP19900900016 EP90900016A EP0451161A1 EP 0451161 A1 EP0451161 A1 EP 0451161A1 EP 19900900016 EP19900900016 EP 19900900016 EP 90900016 A EP90900016 A EP 90900016A EP 0451161 A1 EP0451161 A1 EP 0451161A1
Authority
EP
European Patent Office
Prior art keywords
wooden
fire
wooden beam
shaped body
blanket according
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.)
Withdrawn
Application number
EP19900900016
Other languages
German (de)
English (en)
Inventor
Ingo Ritsch
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
Priority claimed from AT289A external-priority patent/AT390984B/de
Priority claimed from AT188189A external-priority patent/AT393148B/de
Application filed by Individual filed Critical Individual
Publication of EP0451161A1 publication Critical patent/EP0451161A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
    • E04B5/12—Load-carrying floor structures formed substantially of prefabricated units with wooden beams
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92—Protection against other undesired influences or dangers
    • E04B1/94—Protection against other undesired influences or dangers against fire
    • E04B1/941—Building elements specially adapted therefor
    • 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
    • E04B5/26—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated with filling members between the beams

Definitions

  • the invention relates to a ceiling made of wooden beams and moldings arranged between them and made of at least fire-retardant material.
  • Such a blanket can be found, for example, in DE-PS 86 024.
  • cross beams are fastened between the wooden beams, which serve as a support for several shaped blocks laid parallel to the wooden beams, which essentially represent I-beams, the height of which is less than that of the wooden beams, and are made of a porous fired material hen.
  • the disturbing upper side web is broken away from each shaped stone to be applied to a vertical side of a wooden beam, while the lower web extends below the wooden beam approximately to the middle.
  • the height of the upper and lower webs is offset to such an extent that the webs of molded blocks lined up next to one another can overlap to an adjustable extent, so that inaccuracies in the spacing between the wooden beams can compensate.
  • a hollow body ceiling is known from AT-PS 173 374, which is composed of hollow stones which are trapezoidal in cross section and which have a longitudinal groove on the larger base area.
  • Carrier-forming hollow blocks with a longitudinal groove filled with reinforced concrete lie on the supports with the larger base area facing downwards, and the interstices are filled with hollow blocks whose larger base surface points upwards, so that they are inclined with their inclined surfaces Lateral surfaces lie in a snug fit on the oblique side surfaces of the carriers.
  • a heat-insulating blanket is shown in AT-PS 367 135.
  • beams which are not made of wood are encompassed laterally by approximately C-shaped insulating bodies, the interspaces being covered by insulating plates.
  • the bearing surface of the insulating plate on the insulating bodies or the supporting surface of the insulating body for the insulating plate is chamfered, so that when the insulating plate is loaded, a tilting moment is exerted that the lower legs of the insulating body encompassing the carrier against one another presses to avoid a joint that breaks the thermal insulation.
  • the invention has now set itself the task of making a ceiling of the type mentioned fire-retardant in the simplest possible manner, so that it preferably satisfies at least fire resistance class F 90 of ⁇ NORM B 3800, with ordinary wooden beams made from untreated item pine wood (especially spruce ) can be used.
  • each molded body rests on the top of at least one wooden beam and has at least one vertical side surface which shields a vertical side of the wooden beam against lateral burn-off at least above its statically required height.
  • the lateral burn-up is avoided and the ⁇ NORM B 3800 can be fulfilled without the wooden beam having to be widened beyond the statically required extent.
  • the underside of the wooden beams can be accessible to the fire if the static safety surcharge is higher than the burn-off depth.
  • fire protection class F 90 this is the case, for example, from a total beam height of around 14 to 15 cm.
  • a preferred embodiment provides that the molded body has an upper, of this tl ch has protruding support rib.
  • the amount of Auflage ⁇ 'ppe is dependent on the fire-retardant material for the manufacture of the moldings. If they are fired from clay, for example, so that the shaped bodies are formed by hollow bricks, or made from expanded clay, the shielding side surface of the shaped body extends over at least three quarters, preferably four fifths, of its height.
  • the support rib has a height of 6 cm in particular when it is produced from the materials mentioned, which corresponds to the remaining quarter or fifth.
  • each molded body forms a filler body provided with two supports, with each wooden beam and the Shaped body en gap with a maximum width of 1 cm is provided.
  • this gap width due to a lack of adequate air access, there is no lateral burning of the wooden beam, which means a significant advantage, since inaccuracies of the wooden beam and the fillings do not cause any disadvantages and, on the other hand, the laying of the with the filler can be used very easily.
  • each molded body has a shielding side surface, which is pressed against the vertical side of the wooden beam at least above its statically required height.
  • the support rib is formed by the shorter leg and the longer leg shields the vertical side of the wooden beam.
  • the shaped bodies can be braced in any manner.
  • variable-length clamping devices A very simple solution for the pressing or tensioning of the molded body results from the fact that each molded body at its
  • Contact surface on the opposite side has a wedge surface, and interacts with an insert body made of non-combustible material and having a counter wedge and arranged between the shaped bodies and adjacent wooden beams.
  • the insert bodies can have a triangular or trapezoidal cross-sectional shape and are inserted from above between the moldings placed on them.
  • each shaped body has a rib engaging under the wooden beam, and that each wooden beam is completely enclosed by two shaped bodies. This means that there is no need to oversize the height if this would only be necessary due to the lower erosion.
  • Wooden beams are not always g of accurately quaderförmi, but may also warped geringyogg g, so that moldings with a continuous conditions' ppe to the vertical sides at least partially leave a freely large gap, which may optionallylocked ⁇ a, a lateral burn-off the sufficient air access to the Side faces allowed. In these cases, in particular, the desired fire retardancy can nevertheless be achieved if an at least fire-retardant leveling compound is filled.
  • support lugs spaced apart from one another are provided for the support of the moldings. These can be formed, for example, by breaking out parts of the support rib which has corresponding predetermined breaking points.
  • Each rib below the wooden beam also serves as the lower formwork for the filled leveling compound. If the moldings are pressed against the wooden beam, the load-bearing capacity of the holder is not an essential criterion in the choice of material and manufacture of the moldings, since their load remains relatively low due to the pressure on the vertical side of the wooden beam. The selection of the material can then be made primarily from the point of view of maximum fire retardancy.
  • FIG. 1 shows a section through a first embodiment of a wooden beam ceiling according to the invention
  • FIG. 2 shows a section through a second embodiment
  • FIG. 3 shows a section through a third embodiment
  • Fig. 4 shows a section through a fourth embodiment
  • Fig. 5 shows a section through a fifth embodiment of a Ho Izba l kendecke.
  • a ceiling has wooden beams 1 as longitudinal beams, which rest on end supports at the usual center distances of, for example, 60 cm.
  • Shaped bodies 4 made of non-combustible material, in particular made of cement-bonded expanded clay or fired clay, fill the spaces between the beams and are placed on the top sides 3 of the wooden beams 1.
  • Vertical side surfaces 11 of the shaped bodies 4 cover the mutually facing distributions 2 of the wooden beams 1 at least over their statically required height a.
  • each molded body 4 represents a filler body for the spaces between the beams, and has two upper, laterally projecting supports 5 which rest on the upper side 3 of two wooden beams 1.
  • a gap 14 with a maximum width of 1 cm can remain between the vertical side surfaces 11 of the shaped bodies 4 and the vertical sides 2 of the wooden beams 1, as a result of which the shaped bodies 4 can be laid quickly and easily.
  • the part a corresponding to the statically required height a cannot burn, despite the gaps 14, since the air passage and thus the oxygen access to the vertical sides 2 are prevented due to the overlying supports 5.
  • the desired fire resistance time results from the overdimensioning of the height of the wooden beam 1 above the statically required value a, which is necessary due to the static safety, so that a lower layer 10 of the wooden beam can be exposed and burn.
  • a gap 13 can also remain between the planks 5, since the wooden beam 1 does not burn off on the upper side 3 due to lack of air passage and oxygen supply.
  • the molded bodies 4 can also be made higher than the minimum height a to be covered and, if necessary, also be flush with the underside of the wooden beams 1. This further increases the fire resistance time.
  • each shaped body 4 In the embodiment of FIG. 2 is approximately L-shaped form-body 4 will be used of non-combustible material, the shorter leg ⁇ , the upper, laterally projecting Pad 'ppe 5 forms.
  • the moldings 4 are placed with their support ⁇ ' ppt 5 symmetrically on the top 3 of the wooden beam 1, so that they shield the top 3 of the wooden beam 1 and its two verti 2 fire-retardant.
  • the outside of the longer leg of each shaped body 4, which is directed towards the neighboring lobe, has a wedge surface 6, the wedge surfaces 6 of two shaped bodies 4 lying opposite one another converging downward.
  • Trapezoidal insert bodies 7 made of non-combustible material with mating wedge surfaces are inserted into the interspace between the molded bodies 4 of adjacent wooden beams 1 and, due to the wedge effect, press the molded bodies 4 against the vertical sides 2 of the wooden beams 1. As a result, the oxygen supply to the vertical channels 2 is also prevented.
  • the underside of each wooden beam 1 is exposed, so that the lower layer 10 can also burn off here. At least a part of the lower layer 10 of the wooden beams 1 could protrude downwards over the shaped bodies 4 according to FIG. 1.
  • each of the L-shaped Shaped body 4 additionally provided with a lower rib 8 which extends parallel to the support rib 5 and engages under the wooden beam 1. This is thus completely enveloped by two molded bodies 4.
  • This version is particularly suitable for ceilings with a narrow span, where the static safety margin is less than the level required for a fire resistance class. As a result, an oversizing of the height of the wooden beams 1 is not necessary.
  • support lugs 16 spaced apart from one another are provided instead of support ribs.
  • the wooden beam 1 is drawn with an exaggerated curvature of the vertical sides 3, which would cause the maximum width of the gap 14 to be exceeded or would not allow the molded bodies 4 to rest completely.
  • the fire-retardant effect is achieved by a fire-retardant leveling compound 9 filled into the support lugs 16. If, as indicated by dashed lines, shaped bodies 4 similar to FIG. 3 are used, then a covering on the underside for the compensating mass 9 is provided by the ribs 8. In order to achieve a larger entry gap, parts of the molded body 4 can have a hollow cavity 12.
  • Fig. 5 shows an embodiment in which the moldings 4 lie like a saddle on the upper sides 3 of the wooden beams 1.
  • the stockings are replaced in this embodiment by a bridge area 15.
  • the shaped bodies 4 touch one another in the middle of each interstice between the bars or, as shown, can be formed in a graduated manner.
  • the maximally 1 cm wide gaps 14 prevent the lateral erosion, so that even in this embodiment a lower area 10 of each wooden beam 1 can be exposed, the erosion thereof does not reach the statically required part of the wooden beam 1 within the desired fire resistance time.
  • the length of the molded body 4 and the insert body 7 can be chosen as desired. They can extend the entire length of the blanket, or several
  • Shaped body 4 and insert body 7 may be arranged one behind the other. In the latter case, it is expedient to assign the insert bodies 7 to the molded bodies 4 offset in length in each case.
  • a floor construction of any type is arranged on the shaped bodies 4, which is not shown in the figures.
  • Edge beams of a ceiling field are also covered on the outside with shaped bodies 4, these being then braced against the wall according to FIGS. 2 to 4, so that the outer vertical face 2 of the edge beams is also shielded from fire.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)

Abstract

Afin de rendre ignifuge un plafond en poutres de bois constitué de corps moulés (4) en un matériau ignifuge qui reposent sur les poutres de bois (1), les faces latérales verticales (11) des corps moulés protègent les faces verticales (2) des poutres de bois (1) contre une combustion latérale au moins sur leur hauteur statique requise (a). Chaque poutre de bois (1) est ainsi entourée au moins de trois côtés par les corps moulés (4), qui la protègent ainsi du feu.
EP19900900016 1989-01-02 1990-01-02 Fond ignifuge en poutres de bois Withdrawn EP0451161A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT2/89 1989-01-02
AT289A AT390984B (de) 1989-01-02 1989-01-02 Decke
AT188189A AT393148B (de) 1989-08-04 1989-08-04 Decke
AT1881/89 1989-08-04

Publications (1)

Publication Number Publication Date
EP0451161A1 true EP0451161A1 (fr) 1991-10-16

Family

ID=25591047

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900900016 Withdrawn EP0451161A1 (fr) 1989-01-02 1990-01-02 Fond ignifuge en poutres de bois

Country Status (2)

Country Link
EP (1) EP0451161A1 (fr)
WO (1) WO1990007616A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9300034A (nl) * 1993-01-07 1994-08-01 Hendrika Everdina Lambert Geb Kanaalplatensysteem voor plafond, wand, vloer, spouw en spouwmuren, daken en afscheidingen.
AT411540B (de) * 2002-10-15 2004-02-25 Aumayer Anton Ziegeldecke
DE202005021310U1 (de) * 2005-12-02 2007-08-23 HELIKA (GbR)(vertretungsberechtigter Gesellschafter Herr Karl Weinmann, Blumenstr. 9, 72813 St. Johann) Deckenelement

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR529448A (fr) * 1921-11-28
FR18527E (fr) * 1912-12-18 1914-05-13 Signal Gmbh Récepteur pour signaux acoustiques sous-marins
US1362399A (en) * 1917-07-31 1920-12-14 Lewis K Davis Building construction
DE606522C (de) * 1933-06-01 1934-12-04 Elmar Schmitz In ein bestehendes Gebaeude eingebaute feuersichere Decke
EP0218375B1 (fr) * 1985-09-10 1992-06-03 Pre-Formed Components Limited Protection contre le feu pour planchers et plafonds

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9007616A1 *

Also Published As

Publication number Publication date
WO1990007616A1 (fr) 1990-07-12

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