AU782061B2 - Honeycomb-structured hollow-block concrete floor - Google Patents

Honeycomb-structured hollow-block concrete floor Download PDF

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Publication number
AU782061B2
AU782061B2 AU39153/01A AU3915301A AU782061B2 AU 782061 B2 AU782061 B2 AU 782061B2 AU 39153/01 A AU39153/01 A AU 39153/01A AU 3915301 A AU3915301 A AU 3915301A AU 782061 B2 AU782061 B2 AU 782061B2
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AU
Australia
Prior art keywords
hollow body
body concrete
hollow
spacers
hollow bodies
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Ceased
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AU39153/01A
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AU3915301A (en
Inventor
Wilhelm Haussler
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BAM AG
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BAM AG
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Filing date
Publication date
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Publication of AU3915301A publication Critical patent/AU3915301A/en
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Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B5/326—Floor structures wholly cast in situ with or without form units or reinforcements with hollow filling elements
    • 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
    • E04B5/48—Special adaptations of floors for incorporating ducts, e.g. for heating or ventilating
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/20—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups of material other than metal or with only additional metal parts, e.g. concrete or plastics spacers with metal binding wires
    • E04C5/203—Circular and spherical spacers
    • 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
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/38—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings for plane ceilings of concrete
    • 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
    • E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
    • E04G15/06—Forms or shutterings for making openings, cavities, slits, or channels for cavities or channels in walls of floors, e.g. for making chimneys
    • E04G15/061—Non-reusable forms

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • Physics & Mathematics (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Bridges Or Land Bridges (AREA)
  • Laminated Bodies (AREA)
  • Panels For Use In Building Construction (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Road Paving Structures (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

The invention relates to a hollow body concrete floor or hollow body concrete slab made from concrete having reinforcements and conical hollow bodies (1) the cross-section of which is essentially round, oval or more than quadrilateral, wherein hollow bodies (1) are arranged between an upper and a lower reinforcement layer (15, 16) at least in sections essentially in the most compact configuration possible, wherein the areas between the upper and the lower reinforcement layers (15, 16) may be provided without hollow bodies (1). The object of the invention is to provide an improvement over conventional hollow body concrete floors. This object is solved in that spacers (8, 9) are arranged between upper reinforcement layer (15) and hollow bodies (1) on the one hand and between lower reinforcement layer (16) and hollow bodies (1) on the other hand, and that vertical reinforcements (17) are inserted in at least some of the interstitial spaces formed in each case by three adjacent hollow bodies (1).

Description

H 2836-PCT cs
DESCRIPTION
The invention relates to a hollow body concrete floor or hollow body concrete slab made from concrete having reinforcements and conical hollow bodies the cross-section of which is essentially round, oval or more than quadrilateral, wherein hollow bodies are arranged between an upper and a lower reinforcement layer at least in sections essentially in the most compact configuration possible, wherein the areas between the upper and the lower reinforcement layers may be provided without hollow bodies.
The use of hollow bodies to make a concrete ribbed floor is known from AT 249964. The hollow bodies described in that that document are essentially quadrilateral hollow bodies having an upwardly tapering cross-section. The hollow bodies are disposed on a lower formwork floor with the aid of spacers and arranged adjacently in rows. Spacing between the hollow bodies is assured by spacers that are inserted afterwards between the hollow bodies arranged in rows. The hollow bodies described can only be used to produce hollow body concrete floors or hollow body concrete slabs that have an oriented bearing structure. Depending on the application, it is possible in this manner to construct floors having parallel ribs or intersecting ribs. It is therefore only possible to produce floors having a bearing structure that is oriented on one or two axes.
Consequently, it is practically impossible to create floors that do not have an essentially rectangular surface with the structure described. A further drawback of the method of floor construction of the prior art consists in that the hollow bodies with the spacers are supported on the lower formwork. If the formwork is removed after the concrete has hardened the spacers are visible from below. Unsightly corrosion marks result therefrom, In the floor constructions described in the Austrian document, the concrete ribs created thereby must be reinforced with a reinforcing steel mesh. This operation is long and labour-intensive.
An improved version of hollow body floors is described in EP 0980936. This document discloses a method for securing hollow bodies having round or hexagonal cross-section in reinforcing cages. The hollow bodies are disposed with the reinforcing cages in a type of honeycomb arrangement on a lower reinforcing layer. The honeycomb arrangement represents the most compact packing arrangement for hexagonal hollow bodies. Hollow bodies are not used in the vicinity of the buttresses. Here, only reinforcing cages without hollow bodies are installed in the hollow body floor to preserve the honeycomb arrangement. A second reinforcing layer is then applied on top of the reinforcing cages. The tensile stresses in the floor are borne by the almost vertical faces of the reinforcing cage construction. Because of its triaxial bearing structure, this o••o• floor construction makes it possible to build floors having any surface area. The 15 disadvantage in this case is the relatively complicated reinforcing cage arrangement.
o It should be noted that the above discussion of background art is included to explain the context of the present invention. It is not to be taken as an admission 20 that any of the material referred to was published, known or part of the common ooooo general knowledge in Australia as at the priority date of any of the claims of this specification.
An object of the present invention is to facilitate the construction of hollow body concrete floors and hollow body concrete slabs.
Viewed from one aspect, the present invention provides a hollow body concrete floor or hollow body concrete slab made from concrete having reinforcements and conical hollow bodies the cross-section of which are each essentially round, oval or have more sides than a quadrilateral, wherein the hollow bodies are W:Speoes.'39153.01(2.5.05).doc -2aarranged between an upper and a lower reinforcement layer at least in selected sections substantially in a most compact configuration possible depending on the cross-section of the hollow bodies, a base of each conical hollow body being open and directed to the lower reinforcement layer, wherein spacers are arranged between the upper reinforcement layer and hollow bodies on the one hand and between the lower reinforcement layer and hollow bodies on the other hand, and wherein vertical reinforcements are inserted in at least some of the interstitial spaces formed by three adjacent hollow bodies.
In accordance with the present invention, spacers are provided both between the upper reinforcing layer and the hollow bodies, and between the lower reinforcing layer and the hollow bodies, and vertical reinforcements are disposed in at least some of the interstitial spaces created by three respectively adjacent hollow bodies. The hollow body concrete floor or hollow body concrete slab produced by this method has a number of critical advantages. Firstly, the need for reinforcing cages is eliminated. The spacing between the upper and the lower i* reinforcing layers is assured by very simply manufactured e *oe• W:\Speoes.391S3.01(2.5.05).doc 3 upper and lower spacing members. The hollow body concrete floor described needs no reinforcement in the form of horizontally aligned concrete ribs. This means that labourintensive weaving of reinforcement rods may be omitted. The use of less concrete leads to a corresponding reduction in the cost and weight of the construction. The reduction in weight is maximised by arranging the hollow bodies so that they are packed together as closely as possible. The tensile and shearing stresses are absorbed by vertical reinforcements that are disposed in certain interstitial spaces formed by three respectively adjacent hollow bodies.
The vertical reinforcements may be simply implanted in the spaces from above. The hollow body concrete floor described may occupy any surface area. This is because the packing of the hollow bodies in the densest possible arrangement means that the bearing structure has no orientation. Their conical conformation enables the hollow bodies to be stacked, so that they can be transported and stored inexpensively. This in turn means that the hollow bodies may be fabricated with very thin walls. The spacers between the upper reinforcing layer and the hollow bodies on one side, and between the lower reinforcing layer and the hollow bodies on the other side, ensure that the reinforcing layer may be positioned highly accurately. The reinforcing layer on top of the upper spacers further serves as a work surface, since it will support foot traffic. It is highly advantageous that the hollow bodies may be placed contiguously without levelling.
In areas where the floor must be of solid construction, plastic or concrete steel rings having the same dimensions as the hollow bodies are installed instead of the hollow bodies, so that adjacent arrangement may continue in these areas also without difficulty. However, reinforcing cages are required in these areas to support foot traffic and to preserve the function of the spacers. The areas are then 4 completely filled with concrete to create a solid concrete section.
In one advantageous configuration of the invention, the hollow bodies and the upper and/or lower spacers are a single unit. This reduces the labour effort at the construction site considerably, since the upper and lower spacers do not need to be laid separately between the reinforcing layers and the hollow bodies. The upper and/or lower spacers may be produced, for example, together with the hollow bodies in a single pouring. The stacking capability of the conical hollow bodies.
In a further advantageous improvement, the upper and/or lower spacers are conformed annularly. The annular upper *and/or lower spacers may be attached, for example, either to the top or the base of the hollow bodies. When conical hollow bodies are used, the upper and/or lower spacers are well adapted to this shape. The annular conformation provides for better loading of the hollow bodies. The top wall of the hollow body is thus not subjected to bending stress.
A particularly advantageous improvement of the invention provides that the upper and/or lower spacers are made from component parts. Since the spacers can be clipped onto the hollow bodies, the thickness of the layer of concrete above and/or below the hollow bodies may be varied according to the selected size of the spacers, so that it is not necessary to use hollow bodies of different dimensions.
It is particularly advantageous if means are provided for attaching the upper and/or lower spacers and/or component parts. This enables the upper and/or lower spacers to be produced independently of the hollow bodies. As a consequence, normal commercially available hollow bodies may be used as receptacles. The upper and/or lower spacers 5 just have to be attached to the receptacles on site. It is conceivable that the upper and/or lower spacers may simply be placed on the hollow bodies.
A particularly advantageous configuration of the invention provides for the attachment of the upper and/or lower -spacers and/or component parts to the hollow body by means of a clip mechanism. For this purpose, openings are furnished in regular intervals around the circumference of the hollow bodies, into which the lateral spacers may be clipped.
The clip mechanism provide for secure attachment and adequate stability. It is advantageous if vertical reinforcement is provided in the form of double-headed anchors. These are inserted in at least some of the interstitial spaces created by at least three adjacent hollow bodies. The double-headed anchors have proven to be effective as vertical reinforcement rods 'They serve to absorb the tensile and shearing stresses. It is particularly advantageous if the double-headed anchors are attached to three respectively adjacent hollow bodies with a three-point bearing.
It is particularly advantageous if hollow bodies having varying average diameters are provided in the hollow body concrete floor or hollow body concrete slab. Smaller hollow bodies make for smaller bearing distances. Thus if hollow bodies having a smaller diameter are used, relatively high floor loads may be borne without the need to make the concrete slab thicker above and/or below the hollow bodies.
It is advantageously provided that the hollow bodies are made from plastic. This reduces the weight of the hollow body concrete floor considerably. Moreover, production costs are low, since plastic hollow bodies may be massproduced. If hollow bodies made from plastic are used, it 6 is possible to use not only conventional concrete receptacles as the hollow bodies, onto which receptacles the upper and/or lower spacers and/or lateral spacers are placed, but also hollow bodies made from plastic, on which the upper and/or lower and/or lateral spacers are conformed directly.
The provision of lateral spacers represents an advantage.
The provision of lateral spacers allows the hollow bodies to be arranged without levelling. If the size of the lateral spacers is varied, the spaces between the hollow bodies may be adjusted to the requirements of the application.
If the lateral spacers constitute a single unit with the hollow body, a significant amount of work at the construction site is eliminated. The hollow bodies with lateral spacers are unloaded from the truck onto the lower reinforcement layers, and then arranged without levelling.
It is advantageous if the spacers may be assembled from separate components. The amount of space required for storage is reduced and transportation facilitated thereby.
In one configuration of the invention, means for attaching the lateral spacers to the hollow bodies are provided. The lateral spacers may be produced independently of the hollow bodies, so that normally available receptacles may be used as the hollow bodies. The hollow bodies are attached to the hollow bodies at the construction site.
The lateral spacers are attached more easily to the hollow bodies if, in accordance with a preferred improvement of the invention the lateral spacers may be secured to the hollow body by means of a clip mechanism, the lateral spacers are only inserted into holes located in the circumference of the hollow bodies.
7 In an advantageous arrangement, the lateral spacers are assembled from separate components. This has benefits for storage, since less storage space is required.
It is particularly practical if the lateral spacers and/or the upper and/or lower spacers are furnished with apertures distributed over the circumference. These serve to allow the concrete to flow through. The apertures ensure secure implantation of the hollow bodies in the hollow body concrete floor because the concrete fills the apertures.
An improvement of the invention provides that at least some hollow bodies are furnished with at least two lateral apertures to allow gases to flow in and escape, and that at least two apertures each of different hollow bodies are connected by pipes. This provisional step during construction enables the hollow bodies located in the hollow body concrete floor to be used as a heating or air conditioning system after the concrete has been laid. For example, a fan may be used to force air through the hollow bodies that are connected to one another by a network of pipes. It is preferable to avoid the arrangement of complicated heating or air conditioning systems under the floor pavement.
It is advantageous if at least some pipes are furnished with butterfly valves. These butterfly valves may be used to regulate the flow of air. This means that directed regulation of the individual cavities is with cold or warm air is possible.
An embodiment of the invention will be described in detail with reference to the drawing.
In the drawing: 8 Fig. 1 is a perspective representation of a hollow body having lateral spacers and lower spacers; Fig. 2 is a perspective representation of the hollow body with clippable lateral spaces as well as upper and lower spacers; Fig. 3 is an representation of the clip mechanism; Fig. 4 is a schematic representation of a hollow body in the adhesive arrangement between concrete and reinforcement; Fig. 5 is a perspective view of a double-headed anchor; Fig. 6 is a representation of a hollow body and reinforcement arrangement; Fig. 7 is a representation of hollow bodies interconnected with pipes.
Fig. 1 shows a hollow body 1 under no load, top wall 2 of which is furnished with ventilation holes 3. Upper spacers 8 are attached to the top face of hollow body 1, lower spacers 9 that are attached to the underside are not visible in Fig. 1. Upper spacers 8 and lower spacers 9 serve to maintain the separation between hollow body 1 and reinforcement layers (not shown). Lateral spacers 5 are attached to the hollow body. Lateral spacers 5 are annular in shape, as are upper spacers 8. Apertures 6 are furnished along the entire circumference of lateral spacers 5 and upper and lower spacers 8, 9. Apertures 6 of upper spacers 8 are located in a concentric cylindrical surface Apertures 6 of lateral spacers 5 are located in a radial annular surface 21. Apertures 6 allow the concrete to flow through. Apertures 6 enable hollow bodies 1 to be incorporated in the concrete significantly more effectively because the concrete flows through apertures 6. Hollow body 1 consists of a conically conformed receptacle made from plastic. This allows hollow bodies 1 to be stacked inside one another.
Fig. 2 also shows hollow body I. It differs from Fig. 1 in that lateral spacers and upper spacers 8 and lower spacers 9 may be clipped onto hollow body 1.
Lateral spacer 7 is also assembled from four component parts, which must be clipped on individually. A similar method of assembling separate components is also conceivable for upper spacers 8 and lower spacers 9. Upper spacers 8 and lower spacers 9 are attached to the hollow body from above and below respectively. In this embodiment, both spacers 8 and 9 are shown as single-piece units.
o e*o.o* Fig. 3 illustrates the principle of a possible clip mechanism 11. Holes 10 are 15 bored in hollow body 1. Upper spacers 8 and lower spacers 9 are inserted into these holes 10 using a clip mechanism 11. Clip mechanism 11 consists of a pin 12, on whose end 13 distal to lateral spacer 7 or lower spacer 9 is attached an elastic wedge which collapses against pin 12 while the clip mechanism is being inserted in hole 10, and expands again when the mechanism is fully inserted, 20 whereby upper and lower as well as lateral spacers are secured.
Fig. 4 shows a hollow body in the adhesive arrangement between concrete and reinforcement. The necessary distance between adjacent hollow bodies is maintained by lateral spacer 7. The hollow bodies are packed as tightly as possible. Upper spacers 8 and lower spacers 9 maintain the distance between upper reinforcement layer 14 and lower reinforcement layer 15. In known hollow body concrete floors, the hollow body would have had to be suspended in wire cages. A further innovation consists in the lateral spacers do not need to be inserted between the hollow W: Spees3153.01o(2.5 06).doc 10 bodies subsequently, which would not allow the hollow bodies to be arranged without levelling. Lateral spacers 7 and spacer 8, 9 are either attached to hollow bodies 1 before they are arranged, or already form an integral part of the unit. This is an exclusive method for saving a great deal of time in arranging the hollow bodies. At the same time, a major fraction of the concrete and steel is eliminated, thereby reducing the weight and the thickness of the floor.
Fig. 5 shows a double-headed anchor 17. This is inserted between adjacent hollow bodies in areas requiring reinforcement against tensile and shearing stresses.
Double-headed anchor 17 absorbs the tensile and shearing stresses, whereas the concrete absorbs the compressive stresses.
Fig. 6 shows a hollow body and reinforcement arrangement.
Hollow bodies 1 with lateral spacers 7 are arranged in the most compact configuration possible. Hollow bodies 1 are situated between two reinforcement layers, the distance from which is maintained by upper and lower spacers 8, 9.
The upper reinforcement also serves as a work surface.
Double-headed anchors 17 are inserted between adjacent hollow bodies 1 in areas requiring reinforcement against tensile and shearing stresses. These are located in the interstitial spaces created by the most tightest possible packing arrangement. In areas 18 where the floor must consist of solid concrete reinforcing cages 19 having the same dimensions as hollow bodies 1 are implemented. The bearing force of the floor shown here is not oriented. This means that floors of any surface shape may be constructed very easily. Before, it was necessary to reinforce the individual ribs of hollow body concrete floors with horizontal reinforcing means. To this end, reinforcing rods had to be woven together. According to the present invention, this can be dispensed with entirely. This 11 represents a considerable reduction in concrete used. The floor is easier to construct and thus also considerably less expensive. The double-headed anchors serve to absorb the tensile and shearing stresses that arise and are inserted from above in the interstitial spaces between the hollow bodies.
Fig. 7 shows hollow bodies 1 having lateral apertures 22.
These lateral apertures 22 are connected by means of pipes 23. Certain pipes are furnished with butterfly valves. In this way, air may be pumped through the hollow bodies in the completed floor that are connected by the pipes. Thus, the floor provides air conditioning and heating. A complicated piping system is not required.
Key to drawings 01 02 03 04 06 07 08 09 S. 10 I* *I 11 12 15 13 14 15 17 18 18 20 19 20 21 22 23 Hollow body Top face Ventilation holes Bottom face Lateral spacers Apertures Lateral spacers Upper spacers Lower spacers Boreholes Clip mechanism Pin End Upper reinforcement layer Lower reinforcement layer Double-headed anchor Solid concrete floor area Reinforcement cages Concentric surface Radial surface Lateral apertures Pipes W:\Species39153.01(2.5.05).doc

Claims (19)

1. A hollow body concrete floor or hollow body concrete slab made from concrete having reinforcements and conical hollow bodies the cross-section of which are each essentially round, oval or have more sides than a quadrilateral, wherein the hollow bodies are arranged between an upper and a lower reinforcement layer at least in selected sections substantially in a most compact configuration possible depending on the cross-section of the hollow bodies, a base of each conical hollow body being open and directed to the lower reinforcement layer, wherein spacers are arranged between the upper reinforcement layer and hollow bodies on the one hand and between the lower o reinforcement layer and hollow bodies on the other hand, and wherein vertical reinforcements are inserted in at least some of the interstitial spaces formed by three adjacent hollow bodies.
2. The hollow body concrete floor or hollow body concrete slab according to claim 1, wherein hollow bodies and upper and/or lower spacers are a single :o :unit. 20
3. The hollow body concrete floor or hollow body concrete slab according to .ooooi S"either of claims 1 or 2, wherein the upper and/or lower spacers are annular.
4. The hollow body concrete floor or hollow body concrete slab according to any of claims 1 to 3, wherein the upper and/or lower spacers are assembled from separate components. The hollow body concrete floor or hollow body concrete slab according to any of claims 1 to 4, wherein means are provided for attaching the upper and/or lower spacers and/or the separate components.
W:Speaes',39153 .01 (2.5.06).do 14
6. The hollow body concrete floor or hollow body concrete slab according to any of claims 1 to 5, wherein the upper and/or lower spacers and/or the separate components are secured to hollow body by means of a clip mechanism.
7. The hollow body concrete floor or hollow body concrete slab according to any of claims 1 to 6, wherein double-headed anchors are provided as vertical reinforcement.
8. The hollow body concrete floor or hollow body concrete slab according to any of claims 1 to 7, wherein hollow bodies having different diameters are provided in the hollow body concrete floor or hollow body concrete slab.
9. The hollow body concrete floor or hollow body concrete slab according to 15 any of claims 1 to 8, wherein hollow bodies are made from plastic.
10. The hollow body concrete floor or hollow body concrete slab according to *o any of claims 1 to 9, wherein lateral spacers are provided. 20
11. The hollow body concrete floor or hollow body concrete slab according to :claim 10, wherein lateral spacers and hollow bodies are a single unit.
12. The hollow body concrete floor or hollow body concrete slab according to either of claims 10 or 11, wherein lateral spacers are assembled from separate components.
13. The hollow body concrete floor or hollow body concrete slab according to any of claims 10 to 12, wherein means are provided for attaching the lateral spacers to hollow body. W:\Spedes\39153.01(2.5.05). oc
14. The hollow body concrete floor or hollow body concrete slab according to any of claims 10 to 13, wherein the lateral spacers are secured to hollow body by means of a clip mechanism.
15. The hollow body concrete floor or hollow body concrete slab according to any of claims 10 to 14, wherein lateral spacers are assembled from separate components.
16. The hollow body concrete floor or hollow body concrete slab according to any of claims 10 to 15, wherein lateral spacers and/or the upper and/or lower spacers are furnished with apertures distributed about their entire circumference. i.
•17. The hollow body concrete floor or hollow body concrete slab according to 15 any of claims 1 to 16, wherein at least some hollow bodies are furnished with at least two lateral apertures to allow gases to flow in and escape, and wherein at least two apertures each of different hollow bodies are interconnected by a pipe. 20
18. The hollow body concrete floor or hollow body concrete slab according to claim 17, wherein at least one pipe is furnished with a butterfly valve.
19. A hollow body concrete floor or hollow body concrete slab substantially as hereinbefore described with reference to the accompanying drawings and any one of the described embodiments. DATED: 10 May 20005 PHILLIPS ORMONDE FITZPATRICK Attorneys for: BAM W ASpaces39153.01(2.&0).doc
AU39153/01A 2000-02-03 2001-02-01 Honeycomb-structured hollow-block concrete floor Ceased AU782061B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10004640A DE10004640A1 (en) 2000-02-03 2000-02-03 Hollow body with spacers
DE10004640 2000-02-03
PCT/DE2001/000399 WO2001057335A1 (en) 2000-02-03 2001-02-01 Honeycomb-structured hollow-block concrete floor

Publications (2)

Publication Number Publication Date
AU3915301A AU3915301A (en) 2001-08-14
AU782061B2 true AU782061B2 (en) 2005-06-30

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AU39153/01A Ceased AU782061B2 (en) 2000-02-03 2001-02-01 Honeycomb-structured hollow-block concrete floor

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US (1) US20030110724A1 (en)
EP (1) EP1252403B9 (en)
AT (1) ATE433525T1 (en)
AU (1) AU782061B2 (en)
BR (1) BR0107372B1 (en)
CA (1) CA2398157C (en)
DE (2) DE10004640A1 (en)
DK (1) DK1252403T5 (en)
ES (1) ES2328010T3 (en)
PT (1) PT1252403E (en)
WO (1) WO2001057335A1 (en)

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CA2398157C (en) 2010-04-13
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DK1252403T3 (en) 2009-10-19
BR0107372B1 (en) 2012-12-11
ES2328010T3 (en) 2009-11-06
DE10004640A1 (en) 2001-08-09
DE50114931D1 (en) 2009-07-23
EP1252403B9 (en) 2009-12-02
ATE433525T1 (en) 2009-06-15
PT1252403E (en) 2009-07-20
BR0107372A (en) 2002-10-01
US20030110724A1 (en) 2003-06-19
AU3915301A (en) 2001-08-14
DK1252403T5 (en) 2010-03-29

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