CA2085995A1 - Floor covering - Google Patents
Floor coveringInfo
- Publication number
- CA2085995A1 CA2085995A1 CA002085995A CA2085995A CA2085995A1 CA 2085995 A1 CA2085995 A1 CA 2085995A1 CA 002085995 A CA002085995 A CA 002085995A CA 2085995 A CA2085995 A CA 2085995A CA 2085995 A1 CA2085995 A1 CA 2085995A1
- Authority
- CA
- Canada
- Prior art keywords
- floor covering
- upper plate
- welding seam
- area
- strip
- 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.)
- Abandoned
Links
- 239000002184 metal Substances 0.000 claims abstract description 14
- 238000003466 welding Methods 0.000 claims description 48
- 238000007789 sealing Methods 0.000 claims description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000012806 monitoring device Methods 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 abstract description 2
- 230000035515 penetration Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 4
- 230000008646 thermal stress Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 1
- 150000008280 chlorinated hydrocarbons Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/06—Flooring or floor layers composed of a number of similar elements of metal, whether or not in combination with other material
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
Abstract
ABSTRACT
The invention concerns a floor covering intended for industrial halls, especially large-area warehouses, which will withstand the load imposed by vehicles, machines and stored goods and provides a certain protection against the undesirable penetration of environmentally damaging fluids into the ground (5). It consists of several covering components (11) which can be welded together having an upper plate(1), a lower plate(2) and gap (8) between them, the width of which is determined by a layer of expanded metal (3), for the connection of a leakage monitoring device(27).
The invention concerns a floor covering intended for industrial halls, especially large-area warehouses, which will withstand the load imposed by vehicles, machines and stored goods and provides a certain protection against the undesirable penetration of environmentally damaging fluids into the ground (5). It consists of several covering components (11) which can be welded together having an upper plate(1), a lower plate(2) and gap (8) between them, the width of which is determined by a layer of expanded metal (3), for the connection of a leakage monitoring device(27).
Description
A FLOOR COVERING
Description The invention relates to a floor covering for industrial buildings/ in particular for large-arPa warehous~s, which can be placed onto a preformed ba~e p~eferably consisting of concrete.
The contamination o~ ground water and the danger to drinking water resulting therefrom due to chemicals, in particular due to chlorinated hydrocarbons, ha~ become extensively known within the last year~. The storing of such chemicals requires particularly careful precau-tionary and monitoring measures, because damages due to leakage or accidents occur here often as experience has shown. In order to guarantee a safe protection against the undesired appearance of environmentally damaging fluids in the ground, a floor covering has already been suggested ~EP-A2~269 871), whi h has a strip consisting ;~`
of:a steel plate and fastenable on a preformed base ~ .
consisting, Por example, o~ concrete by means of mechan- ~ -ical fastening means, at least one lower plate welded on : the strip in an overlapping arrangement, and at least two:upper plates separated from the lower plate by an inherently~stable spacing layer ~orming air-tight gaps. ~.
The lower~and upper plates consi~t preferably of steel, `
while the spacing layer~consists preferably of an ~
~:
- ~ ' ' ' ' ' . ~ I . . , expanded metal capable of withstanding heavy loads, however, permitting gas to go through in the direction of the gap. The gaps can be evacuated and can be connected to a leakage monitoring device through a measuring line.
As a mechanical fastening means for anchorage of the strip on the preformed base, screw and peg connections have been used, which, spaced from one another, extend into preformed blind holes in the base. Ik has now been proven that the welding operations, which must be carried out in the area of the strip, can result in high temperatures also in the area of the screw/peg connec-tions due to heat conduction. These high temperatures result in the peg material becoming brittle. Further-more, thermal stress occurs due to temperature fluctua-tions and local overheating because of the different thermal expansion of the layer material and of the base, which thermal stress must be absorbed by the mechanical fastening elements. ~ue to the embrittlement of the peg material and the thermal stress, there exists the dangar that individual fastening elements are destroyed and the floor covering is lifted up, which can result in ground unevennesses. Furthermore, the unevennesses in the surface of the ground, which unevennesses are caused by the overlapping upper plates, are felt as being disadvantageous.
The basic purpose of the invention is therefore to improve the known floor covering of the above-disclosed type in such a manner that ground unevennesses due to construction and manufacture are avoided.
To attain this purpose the invention suggests that each peg having a length of less than 2/3 of the depth of the blind hole extends with its lower edge to the base of the blind hole, and that the screw shank, which is screwed with its tip from above into the peg, freely extends through the blind hole in the area between the opening of the blind hole and the upper edge of the peg ; ' - : ' :
: :- :. : - . .
: `
.~ .
~ .
2i~
leaving an annular yap. With these measures, it is achieved that the heat, which is produced during the welding operation in the area of the strip, does not result in any nonpermissible temperature increase in the pegs consisting of peg steel or plastic so that an embrittlement of the peg material is avoided.
Furthermore, the part of the screw shank which freely extends through the blind hole leaving the annular gap, guarantees that shifts in the floor covering due to thermal expansion effects does result in a small elastic deformation of the screw shank, howevex, does not result in compulsive forces in the fastening area, which could lead to the lifting of the strip o~f from the base.
The peg length chosen for this purpose is advan-tageously less than half the depth of the blind hole, while the screw shank extends with approximately 3/4 to 1/2, preferably approximately 2/3 of its length freely through the blind hole and is screwed at the side o~ the tip with approximately 1/4 to 1/2, preferably 1/3 of its length, into the peg. In order to keep the fastening elements also during high temperature fluctuations essentially free of transverse forces, a radial annular gap width of approximately 1 to 3 mm should be maintained. The head screws equipped with a flat head are during the fastening operation advantagaously completely countersunk in the holes of the strip, which holes are designed as sink holes, so that the lower plates can for welding be placed flush with the surface onto the strip.
The strip has advantageously two rows o~ holes arranged spaced from and parallel to one another for fastening to the base so that two lower plates each overlapping one of the rows of holes from opposite sides can be welded together in the area of a welding gap arranged approximately in the middle between the rows of holes by a common welding seam on the strip and at the joint.
., ; ' ' ' .` ~
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As an alternative to this or as an advantageous development of the invention it i5 suggested for a floor covering, in which one of the upper plates is welded, in the area of a longitudinal edge by a first sealing welding seam which bridges the gap and divides same into two air-tight separated parts, to the lower plate, and the second upper plate in the area of a longitudinal edge to the first upper plate by a second sealing welding seam, which is parallel to the first one, that the second sealing welding seam is directly adjacent to the first sealing welding ssam which is in the longi-tudinal edge area of the first upper plate, and bridges a welding gap separating the second upper plate from the first upper plate. The first welding seam has thereby advantageously a cross-sectional shape widening wedge-shaped toward the lower plate and gripping under the lower edges of the two upper plates, while the second welding seam can have a cross-sectional shape widening wedge-shaped toward the upper edge of the aligned upper plates. A combination welding seam is created in this manner which forms at the height of the lower edge of the aligned upper plates a cross-sectional constriction creating a form-locking and distance maintaining connec-tion. These measures achieve a step-~ree smooth cover surface which is immune to longitudinal and transverse forces due to the form locking feature in the area of the combination welding seam.
An improvement in this respect is achieved such that the longitudinal side edge of the first uppar plate, which edge is on the side of the welding seam, has an inclinsd downwardly extending chamfer, while the longi-tudinal side of the second upper plate, which side is on the side of the welding seam, can have an inclined upwardly extending chamfer.
In order to be able to transmit the transverse forces occurring during the welding operation evenly onto the two rows of fastening elements, it is :'-. ; . ~
, .
'. '' ' :.
., .' ' `
Description The invention relates to a floor covering for industrial buildings/ in particular for large-arPa warehous~s, which can be placed onto a preformed ba~e p~eferably consisting of concrete.
The contamination o~ ground water and the danger to drinking water resulting therefrom due to chemicals, in particular due to chlorinated hydrocarbons, ha~ become extensively known within the last year~. The storing of such chemicals requires particularly careful precau-tionary and monitoring measures, because damages due to leakage or accidents occur here often as experience has shown. In order to guarantee a safe protection against the undesired appearance of environmentally damaging fluids in the ground, a floor covering has already been suggested ~EP-A2~269 871), whi h has a strip consisting ;~`
of:a steel plate and fastenable on a preformed base ~ .
consisting, Por example, o~ concrete by means of mechan- ~ -ical fastening means, at least one lower plate welded on : the strip in an overlapping arrangement, and at least two:upper plates separated from the lower plate by an inherently~stable spacing layer ~orming air-tight gaps. ~.
The lower~and upper plates consi~t preferably of steel, `
while the spacing layer~consists preferably of an ~
~:
- ~ ' ' ' ' ' . ~ I . . , expanded metal capable of withstanding heavy loads, however, permitting gas to go through in the direction of the gap. The gaps can be evacuated and can be connected to a leakage monitoring device through a measuring line.
As a mechanical fastening means for anchorage of the strip on the preformed base, screw and peg connections have been used, which, spaced from one another, extend into preformed blind holes in the base. Ik has now been proven that the welding operations, which must be carried out in the area of the strip, can result in high temperatures also in the area of the screw/peg connec-tions due to heat conduction. These high temperatures result in the peg material becoming brittle. Further-more, thermal stress occurs due to temperature fluctua-tions and local overheating because of the different thermal expansion of the layer material and of the base, which thermal stress must be absorbed by the mechanical fastening elements. ~ue to the embrittlement of the peg material and the thermal stress, there exists the dangar that individual fastening elements are destroyed and the floor covering is lifted up, which can result in ground unevennesses. Furthermore, the unevennesses in the surface of the ground, which unevennesses are caused by the overlapping upper plates, are felt as being disadvantageous.
The basic purpose of the invention is therefore to improve the known floor covering of the above-disclosed type in such a manner that ground unevennesses due to construction and manufacture are avoided.
To attain this purpose the invention suggests that each peg having a length of less than 2/3 of the depth of the blind hole extends with its lower edge to the base of the blind hole, and that the screw shank, which is screwed with its tip from above into the peg, freely extends through the blind hole in the area between the opening of the blind hole and the upper edge of the peg ; ' - : ' :
: :- :. : - . .
: `
.~ .
~ .
2i~
leaving an annular yap. With these measures, it is achieved that the heat, which is produced during the welding operation in the area of the strip, does not result in any nonpermissible temperature increase in the pegs consisting of peg steel or plastic so that an embrittlement of the peg material is avoided.
Furthermore, the part of the screw shank which freely extends through the blind hole leaving the annular gap, guarantees that shifts in the floor covering due to thermal expansion effects does result in a small elastic deformation of the screw shank, howevex, does not result in compulsive forces in the fastening area, which could lead to the lifting of the strip o~f from the base.
The peg length chosen for this purpose is advan-tageously less than half the depth of the blind hole, while the screw shank extends with approximately 3/4 to 1/2, preferably approximately 2/3 of its length freely through the blind hole and is screwed at the side o~ the tip with approximately 1/4 to 1/2, preferably 1/3 of its length, into the peg. In order to keep the fastening elements also during high temperature fluctuations essentially free of transverse forces, a radial annular gap width of approximately 1 to 3 mm should be maintained. The head screws equipped with a flat head are during the fastening operation advantagaously completely countersunk in the holes of the strip, which holes are designed as sink holes, so that the lower plates can for welding be placed flush with the surface onto the strip.
The strip has advantageously two rows o~ holes arranged spaced from and parallel to one another for fastening to the base so that two lower plates each overlapping one of the rows of holes from opposite sides can be welded together in the area of a welding gap arranged approximately in the middle between the rows of holes by a common welding seam on the strip and at the joint.
., ; ' ' ' .` ~
~ ~ 8 r~
As an alternative to this or as an advantageous development of the invention it i5 suggested for a floor covering, in which one of the upper plates is welded, in the area of a longitudinal edge by a first sealing welding seam which bridges the gap and divides same into two air-tight separated parts, to the lower plate, and the second upper plate in the area of a longitudinal edge to the first upper plate by a second sealing welding seam, which is parallel to the first one, that the second sealing welding seam is directly adjacent to the first sealing welding ssam which is in the longi-tudinal edge area of the first upper plate, and bridges a welding gap separating the second upper plate from the first upper plate. The first welding seam has thereby advantageously a cross-sectional shape widening wedge-shaped toward the lower plate and gripping under the lower edges of the two upper plates, while the second welding seam can have a cross-sectional shape widening wedge-shaped toward the upper edge of the aligned upper plates. A combination welding seam is created in this manner which forms at the height of the lower edge of the aligned upper plates a cross-sectional constriction creating a form-locking and distance maintaining connec-tion. These measures achieve a step-~ree smooth cover surface which is immune to longitudinal and transverse forces due to the form locking feature in the area of the combination welding seam.
An improvement in this respect is achieved such that the longitudinal side edge of the first uppar plate, which edge is on the side of the welding seam, has an inclinsd downwardly extending chamfer, while the longi-tudinal side of the second upper plate, which side is on the side of the welding seam, can have an inclined upwardly extending chamfer.
In order to be able to transmit the transverse forces occurring during the welding operation evenly onto the two rows of fastening elements, it is :'-. ; . ~
, .
'. '' ' :.
., .' ' `
2 ~
advantageous when the two seallng welding seams, which are on the side of the upper plate, are placed in the area between the rows of holes of the strip and are aligned parallel with respect to these rows. The sealing welding seams, which are on the side of the upper plate, are advantageously additionally arranged laterally offset with respect to the welding seam on the side of the lower plates/holding plate and are aligned parallel to the welding seam.
lo The invention will be discussed in greater detail hereinafter in connection with one exemplary embodiment schematically illustrated in the drawings, in which Figure 1 is a perspective view of a floor covering composed of several cove~ing components, Figure 2 is a vertical cross-sectional illustration of a portion of the floor covering of Figure 1 with a joint between two fitting elements~
The floor covering consists of several covering components 11 connected with one another at joint areas, which components 11 have an upper plate 1 and a lower plate 2, between which a spacing layer 3 is arranged.
The upper and lower plates l, 2 consist advantageously o~ a thick-wall steel plate, while the spacing layer 3 consists of an expanded metal. ~he expanded metal 3 has a web-like, three-dimensional structure with a high transverse carrying capability. Due to openings and metal deformations, the expanded metal 3 is air-permeable so that a continuous gap 8 is created between the two plates 1 and 2, which gap can be either evacuated or filled with gas. The floor covering can be welded with its lower plates 2 to strips 4 of steel, which strips are arranged spaced from one another and can be fastened by means of screws 6 and pegs 7 to khe pre~ormed concrete base 5. The evacuatable gap 8 can be connected to a leakage monitoring device 17 through a measuring line 16.
: ~ . , ; ; : , , : ., . : .. .. - :- - . :
. . ' ',, ' ,, ~ ' '', , .. . . .
, ' , !, ' ' . ' ' ' ~8~
Figure 2 shows how two adjacent covering components 11 of the floor covering are connected at their joint areas and are fastened on the base 5. The fastening screws 6 penetrate through the strip 4 through holes 20 arranged in two rows aligned parallel to one anothex. A
center path 2Z remains and which does not have any holes 20 which could later cause leakage. The screws 6 extend with their shank 24 into blind holes 26 and are there screwed with the tip 28 of the shank into the relatively short pegs 7 completely inserted into the blind hole.
The head portion of the shank extends freely through the blind hole 26 leaving an annular gap 30. The approxi-mately 50 mm long screw extends in the illustrated exemplary embodiment with approximately one third of its bottom threaded shank 24 above the approximately 30 mm long peg 7. Its flat head 32 is countersunk in the hole 20.
The lower plates 2 of the two covering components 11 are welded together at a joint and are welded by the same welding seam 34 in the area of the center path 22 of the strip 4. The space between the two strips 4 is filled with a layer 36 of, for example, bituminous felt, plastic or cement mortar so that a flat base results for the lower plates 2.
The layer 3 o~ expanded metal illustrated on the left in Figure 2 is first placed onto the lower plates 2 connected in this manner to the strips 4 and the base 5 The upper plate 1 shown on the left is thereafter applied and is sealingly welded at its inclined cut longitudinal edge 38 by a sealing welding seam 14 bridging the gap formed by the layer 3 of expanded metal to the lower plate 2 existing therebelow. The respec-tive expanded metal layer 3 is thereby simultaneously also welded thereto. The welding seam 14 ~ormed in this manner has a downwardly widening cross-sectional shape which is approximately triangular or wedge-shaped in cross section. The layer 3 o~ expanded metal shown on - , . .
, : .
- :~,: '' . .
" . ..
-20B~99~
the right in Figure 2 is then placed onto the lower plate 2, after which the right upper plate 1 is placed in such a manner onto the respective layer of expanded metal that a welding gap of approximately 5 mm is formed between its inclined upwardly cut longitudinal edge 40 and the longitudinal edge 38 of the left upper plate 1, which longitudinal edge 38 is covered up by the welding seam 14. The two upper plates 1 are thereafter welded together by a sealing welding seam 10 connected on the one side to the welding seam 14 and on the other side to the longitudinal edge 40. Two gaps 8, the width of which is determined by the wall thickness of the layers 3 of expanded metal, are created in this manner, which gaps 8 can be evacuated at the other three edges of the covering components 11 during corresponding sealing weldings. The gaps 8 are separated from one another by a vacuum and can be connec~ed with one another for the purpose of monitoring leakage and searching for leakage.
U-shaped pipe sections 12 are used for the connection, which pipe sections can be connected to adjacent connecting pieces of two covering components 11.
- . ~ . , ~ . . .
advantageous when the two seallng welding seams, which are on the side of the upper plate, are placed in the area between the rows of holes of the strip and are aligned parallel with respect to these rows. The sealing welding seams, which are on the side of the upper plate, are advantageously additionally arranged laterally offset with respect to the welding seam on the side of the lower plates/holding plate and are aligned parallel to the welding seam.
lo The invention will be discussed in greater detail hereinafter in connection with one exemplary embodiment schematically illustrated in the drawings, in which Figure 1 is a perspective view of a floor covering composed of several cove~ing components, Figure 2 is a vertical cross-sectional illustration of a portion of the floor covering of Figure 1 with a joint between two fitting elements~
The floor covering consists of several covering components 11 connected with one another at joint areas, which components 11 have an upper plate 1 and a lower plate 2, between which a spacing layer 3 is arranged.
The upper and lower plates l, 2 consist advantageously o~ a thick-wall steel plate, while the spacing layer 3 consists of an expanded metal. ~he expanded metal 3 has a web-like, three-dimensional structure with a high transverse carrying capability. Due to openings and metal deformations, the expanded metal 3 is air-permeable so that a continuous gap 8 is created between the two plates 1 and 2, which gap can be either evacuated or filled with gas. The floor covering can be welded with its lower plates 2 to strips 4 of steel, which strips are arranged spaced from one another and can be fastened by means of screws 6 and pegs 7 to khe pre~ormed concrete base 5. The evacuatable gap 8 can be connected to a leakage monitoring device 17 through a measuring line 16.
: ~ . , ; ; : , , : ., . : .. .. - :- - . :
. . ' ',, ' ,, ~ ' '', , .. . . .
, ' , !, ' ' . ' ' ' ~8~
Figure 2 shows how two adjacent covering components 11 of the floor covering are connected at their joint areas and are fastened on the base 5. The fastening screws 6 penetrate through the strip 4 through holes 20 arranged in two rows aligned parallel to one anothex. A
center path 2Z remains and which does not have any holes 20 which could later cause leakage. The screws 6 extend with their shank 24 into blind holes 26 and are there screwed with the tip 28 of the shank into the relatively short pegs 7 completely inserted into the blind hole.
The head portion of the shank extends freely through the blind hole 26 leaving an annular gap 30. The approxi-mately 50 mm long screw extends in the illustrated exemplary embodiment with approximately one third of its bottom threaded shank 24 above the approximately 30 mm long peg 7. Its flat head 32 is countersunk in the hole 20.
The lower plates 2 of the two covering components 11 are welded together at a joint and are welded by the same welding seam 34 in the area of the center path 22 of the strip 4. The space between the two strips 4 is filled with a layer 36 of, for example, bituminous felt, plastic or cement mortar so that a flat base results for the lower plates 2.
The layer 3 o~ expanded metal illustrated on the left in Figure 2 is first placed onto the lower plates 2 connected in this manner to the strips 4 and the base 5 The upper plate 1 shown on the left is thereafter applied and is sealingly welded at its inclined cut longitudinal edge 38 by a sealing welding seam 14 bridging the gap formed by the layer 3 of expanded metal to the lower plate 2 existing therebelow. The respec-tive expanded metal layer 3 is thereby simultaneously also welded thereto. The welding seam 14 ~ormed in this manner has a downwardly widening cross-sectional shape which is approximately triangular or wedge-shaped in cross section. The layer 3 o~ expanded metal shown on - , . .
, : .
- :~,: '' . .
" . ..
-20B~99~
the right in Figure 2 is then placed onto the lower plate 2, after which the right upper plate 1 is placed in such a manner onto the respective layer of expanded metal that a welding gap of approximately 5 mm is formed between its inclined upwardly cut longitudinal edge 40 and the longitudinal edge 38 of the left upper plate 1, which longitudinal edge 38 is covered up by the welding seam 14. The two upper plates 1 are thereafter welded together by a sealing welding seam 10 connected on the one side to the welding seam 14 and on the other side to the longitudinal edge 40. Two gaps 8, the width of which is determined by the wall thickness of the layers 3 of expanded metal, are created in this manner, which gaps 8 can be evacuated at the other three edges of the covering components 11 during corresponding sealing weldings. The gaps 8 are separated from one another by a vacuum and can be connec~ed with one another for the purpose of monitoring leakage and searching for leakage.
U-shaped pipe sections 12 are used for the connection, which pipe sections can be connected to adjacent connecting pieces of two covering components 11.
- . ~ . , ~ . . .
Claims (15)
1. A floor covering for industrial buildings, in particular for large-area warehouses comprising a strip (4) consisting of steel plate and fastenable on a premanufactured base preferably consisting of concrete by means of mechanical fastening means, and at least one lower plate (2) welded to the strip (4), with the mechanical fastening means being pegs (7) arranged in blind holes (26) of the base (5) and head screws (6) extending into from above with their shank (24) through holes (20) in the strip (4) the blind holes (26) and screwed into the pegs (7), characterized in that each peg (7) reaching to the base of the blind hole has a length of less than half of the depth of the blind hole, and that the screw shank (24), which with its tip (28) is screwed from above into the peg, freely extends with 3/4 to 1/2, preferably approximately 2/3 of its length through the blind hole (26) in the area between the blind-hole opening and the upper edge of the peg creating an annular gap (30).
2. The floor covering according to Claim 1, characterized in that the screw shank (24) is screwed with its tip with approximately 1/4 to 1/2, preferably 1/3 of its length into the peg (7).
3. The floor covering according to Claim 1 or 2, characterized in that the annular gap (30) has a radial width of 1 to 3 mm.
4. The floor covering according to one of the Claims 1 to 3, characterized in that the screw shank (24) in its free area can be elastically deformed transversely with respect to the annular gap (30) under the action of transverse forces.
5. The floor covering according to one of the Claims 1 to 4, characterized in that the flat head (32) screws (6) can be completely countersunk into the holes (20) of the strip (4), which holes are constructed as a countersunk hole.
6. The floor covering according to one of the Claims 1 to 5, characterized in that the strip (4) has two rows of holes arranged spaced from and parallel to one another for passage by the head screws, and that two lower plates (2) each overlapping from opposite sides one of the rows (20) of holes are welded together in the area of a welding gap formed approximately in the middle between the rows of holes by a common welding seam (34) on the strip (4) and at the joint.
7. The floor covering according to one of the Claims 1 to 6, with in addition at least two upper plates being provided, which upper plates are separated from the lower plate by an inherently stable spacing layer (3) preferably of an expanded metal forming air-tight gaps, with the first upper plate (1) being welded in the area of a longitudinal edge by a first sealing welding seam (14) bridging the gap (8) and dividing said gap into two parts separated air tight from one another to the lower plate, and the second upper plate (1) being welded in the area of a longitudinal edge (40) to the first upper plate (1) by a sealing welding seam (10), which is parallel to the first one, characterized in that the second sealing welding seam (10) adjoins directly the first sealing welding seam (14) provided in the area of the longitudinal edge (30) of the first upper plate (1) and bridges a welding gap separating the second upper plate (1) from the first upper plate (1).
8. The floor covering for industrial buildings, in particular for large-area warehouses, for placement onto a preformed base (5) preferably consisting of concrete, comprising at least one strip (4) fastened on the base (5) and at least one lower plate (2) welded to the strip in an overlapping arrangement, with in addition at least two upper plates being provided, which upper plates are separated from the lower plates by an inherently stable spacing layer (3) preferably of an expanded metal forming air-tight gaps, with the first upper plate (1) being welded in the area of a longitudinal edge by a first sealing welding seam (14) bridging the gap (8) and dividing same into two parts separated air-tight from one another to the lower plate, and the second upper plate (1) being welded in the area of a longitudinal edge (40) to the first upper plate (1) by a second sealing welding seam (10), which is parallel to the first one, characterized in that the second sealing welding seam (10) is directly adjacent to the first sealing welding seam (14) provided in the area of the longitudinal edge (38) of the first upper plate (1) and bridges a welding gap separating the second upper plate (1) from the first upper plate (1).
9. The floor covering according to Claim 7 or 8, characterized in that the first sealing welding seam (14) has a cross-sectional shape enlarging wedge-shaped toward the lower plate and gripping under the lower edges of the two upper plates (1).
10. The floor covering according to one of the Claims 7 to 9, characterized in that the second sealing welding seam (10) has a cross-sectional shape enlarging wedge-shaped toward the upper edge of the upper plates (1), which are aligned with one another.
11. The floor covering according to one of the Claims 7 to 10, characterized in that the first and second sealing welding seams (14, 10), which are connected with one another to one common sealing welding seam, form a cross-sectional constriction at the level of the lower edges of the upper plates (1), which lower edges are aligned with one another.
12. The floor covering according to one of the Claims 7 to 11, characterized in that the longitudinal edge (38) of the first upper plate (1) has an inclined downwardly extending chamfer.
13. The floor covering according to one of the Claims 7 to 12, characterized in that the longitudinal edge (38) of the second upper plate (1) has an inclined upwardly extending chamfer.
14. The floor covering according to one of the Claims 7 to 13, characterized in that the two sealing welding seams (14, 10) on the side of the upper plate are arranged in the area between the rows (20) of holes of the strip (4) and are aligned parallel to these rows.
15. The floor covering according to one of the Claims 7 to 14, characterized in that the sealing welding seams (14, 10) on the side of the upper plate are arranged laterally offset with respect to the welding seam (34) on the side of the lower plate/strip and are aligned parallel to these seams.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4019947.9 | 1990-06-22 | ||
| DE4019947 | 1990-06-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2085995A1 true CA2085995A1 (en) | 1991-12-23 |
Family
ID=6408897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002085995A Abandoned CA2085995A1 (en) | 1990-06-22 | 1991-06-05 | Floor covering |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA2085995A1 (en) |
| WO (1) | WO1992000431A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20015622U1 (en) * | 2000-09-09 | 2000-12-14 | Vießmann, Hans, Dr. Dr., 95030 Hof | Floor covering, in particular for walk-in and drive-in cooling and freshness cells |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL216506A (en) * | 1940-10-03 | |||
| DE2447232A1 (en) * | 1974-10-03 | 1976-04-08 | Biriz Oemer Acar Dipl Bau Ing | Coil spring anchoring plug - is wound or left handed to suit screw thread |
| EP0269871B1 (en) * | 1986-11-28 | 1991-02-06 | Helmut Mögel | Flooring material |
| DE8631930U1 (en) * | 1986-11-28 | 1987-07-02 | Mögel, Helmut, 7000 Stuttgart | Floor covering strip |
-
1991
- 1991-06-05 CA CA002085995A patent/CA2085995A1/en not_active Abandoned
- 1991-06-05 WO PCT/EP1991/001034 patent/WO1992000431A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO1992000431A1 (en) | 1992-01-09 |
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