AU2004203734B2 - Profiled steel decking - Google Patents
Profiled steel decking Download PDFInfo
- Publication number
- AU2004203734B2 AU2004203734B2 AU2004203734A AU2004203734A AU2004203734B2 AU 2004203734 B2 AU2004203734 B2 AU 2004203734B2 AU 2004203734 A AU2004203734 A AU 2004203734A AU 2004203734 A AU2004203734 A AU 2004203734A AU 2004203734 B2 AU2004203734 B2 AU 2004203734B2
- Authority
- AU
- Australia
- Prior art keywords
- decking
- steel
- steel decking
- embossments
- crests
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 51
- 239000010959 steel Substances 0.000 title claims abstract description 51
- 239000002131 composite material Substances 0.000 claims description 4
- 238000005452 bending Methods 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
- E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
- E04B5/38—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element
- E04B5/40—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element with metal form-slabs
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
- E04C2/32—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure formed of corrugated or otherwise indented sheet-like material; composed of such layers with or without layers of flat sheet-like material
- E04C2/322—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure formed of corrugated or otherwise indented sheet-like material; composed of such layers with or without layers of flat sheet-like material with parallel corrugations
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
- Finishing Walls (AREA)
- Soil Working Implements (AREA)
- Bridges Or Land Bridges (AREA)
- Paper (AREA)
- Glass Compositions (AREA)
- Metal Rolling (AREA)
Abstract
Profiled steel decking comprises a steel sheet roll formed to define crests 1 and troughs 2 separated by inclined webs 3. The boundaries between the webs and the crests are radiussed to define corners 8 each having a smooth curvilinear profile. Each web may include two or more vertically spaced linear rows of embossments 10 and the troughs may include two stiffening ribs 14 15. Each crest may be formed with a generally 'V' shaped projection 9 which, in use, defines a shear connector between the decking and the concrete layer cast over the upper surface of the decking.
Description
1 PROFILED STEEL DECKING This invention relates to profiled steel decking. More especially, the invention concerns profiled steel decking for use inter alia as a component of a composite slab 5 including steel decking bonded to a layer of concrete cast in situ over the upper surface of the decking. A reference herein to a patent document or other matter which is given as prior art is not to be taken as an admission that that document or matter was, in Australia, known 10 or that the information it contains was part of the common general knowledge as at the priority date of any of the claims. Composite structures produced by pouring light or normal weight concrete onto steel decking are used widely in the building industry for flooring and/or ceiling units. 15 Conventionally, steel decking comprises one or more sheets of steel roll formed to create one or more crests and troughs separated by inclined webs. Shear stud connectors are traditionally used to provide enhanced bonding between the steel decking and the concrete layer. These shear stud connectors are placed in the trough positions of the decking and are enveloped by the concrete layer when it is cast. 20 Traditionally, the crests and troughs of profiled steel decking are generally flat with the corners between the crests and the uppermost ends of the inclined webs defined by acute angles. Also, the surfaces of the inclined webs of traditional steel decking are generally planar. The bending capacity of such profiles is limited. 25 It would be desirable to provide improved profiled steel decking which exhibits clear advantages over traditional steel decking. According to the present invention in one aspect, there is provided profiled steel 30 decking when used as a component of a composite slab wherein the steel decking is bonded to a layer of concrete, the decking including a steel sheet roll formed to define at least two crests and a trough separated by inclined webs, and wherein the boundaries between the webs and the crests are radiussed to define corners each C:poNemnp\SPEC-74951I doc 2 having a smooth curvilinear profile, the radius of each such corner being between 15 and 30mm. Typically, the curvilinear corners have a radius of between 20 and 25mm. 5 Each inclined web of the steel decking may include two or more vertically spaced linear rows of embossments which extend outwardly from the outer surface of each inclined web. Each embossment may be generally circular in section and may be produced by roll forming. Each embossment of the uppermost row may be positioned 10 above a land portion separating neighbouring embossments of the lowermost row. The diameter of each embossment preferably lies within the range 9.0 to 15. 0mm. A typical diameter is 12. Omm. The spacing between the centres of neighbouring embossments preferably lies within the range 30 to 40mm. A typical spacing is 35mm. The vertical distance between the upper and lower rows may be between 27 and 15 37mm. A typical distance being 32mm. The trough between the two crests of the decking may be formed with two stiffening ribs each of which is spaced generally equidistant from the lowermost end of the respective inclined web. The flange portion defined between the stiffening ribs may 20 provide a site for shear stud connectors. The width of each stiffening rib of the trough may be between 15 and 25mm. Typically, the width of one rib is 21mm and that of the other rib 20mm. T:\DDMspecies\2004203734-retyped pages (29.4.09)dAoc WO 2004/061249 PCT/GB2004/000006 3 Each crest may be formed with a generally 'V' shaped projection which, in use, defines a shear connector between the decking and a concrete layer cast over the upper surface of the decking. The angle subtended by each inclined web to the horizontal preferably lies within the range of 75 to 850. A typical angle is 78.50. The decking is preferably roll formed from galvanised steel sheet whose gauge is between 0.8 and 1.3mm. Typically gauges are 0.9 to 1.2mm. The decking is preferably manufactured using a high grade steel having, typically, a yield value of 500 N/mm 2 . The invention will now be described by way of example only, with reference to the accompanying diagrammatic drawings, in which: Figure 1 is an end view of profiled steel decking in accordance with the invention; Figure 2 is a scrap side view to an enlarged of a section of the decking illustrated in Figure 1; Figure 3 is a scrap plan view from above of a section of the steel decking shown in Figure 1; and Figure 4 is a side view of a connection between neighbouring steel deckings in accordance with the invention. The steel decking illustrated in the drawings is roll formed from a single sheet of galvanised steel and comprises two crests 1 separated by a trough 2. Each crest is bordered with two outwardly inclined webs 3. The lower ends of the webs are bordered by outwardly extending end laps 4, 5. Each of these end laps 4, 5 is formed with interlocks 6, 7 respectively WO 2004/061249 PCT/GB2004/000006 4 which cooperate with complementary interlocks of neighbouring steel decks to increase the effective span of the overall steel decking. The gauge of the steel sheet from which the decking is roll formed is typically between 0.9 and 1.5mm. A preferred gauge is 1.2mm. The steel sheet may be coated with a bonded plastics film for protective and aesthetic purposes. Alternatively, the sheet may be formed with a polyester coating. As will be seen from the drawings, the corners between the crests 1 and the adjoining webs 3 are radiussed to produce a curvilinear profile 8. These curvilineal profiles increase the bending capacity of the decking and add strength particularly in the corner regions to inhibit failures which occur with traditional decking. The added strength enables the span lengths of the decking to be increased. The actual radius of any given profiled corner 8 will depend inter a/ia on the required dimensions of the decking. Typically, the selected radius will be between 20 and 30mm. Preferred radii are 23.8 and 25mm. The span of each radiussed corner is typically between 30 and 35mm. A preferred span is 32.3mm. As will be seen from Figures 1 and 2, each web 3 is formed with two vertically spaced linear rows of embossments 6 which project outwardly from the web surfaces. These embossments are produced during the roll forming process and the boundary between each embossment and the adjoining web surface is circular. Typically, the diameter of each embossment is in the range 9.0 to 15.00mm. A preferred diameter is around 12.0mm. As will be seen from Figure 2, the embossments of the upper row are displaced linearly with respect to those of the lower row such that each upper embossment is positioned above a land portion of the web WO 2004/061249 PCT/GB2004/000006 5 sited approximately midway between neighbouring embossments of the lower linear row. The rows of embossments extend along the entire length of each web and their presence enhances the bond between the decking and the concrete layer which, in use, is poured over the upper surface of the decking. Typically, the vertical spacing between the rows is in the range 30 to 35mm (measured between embossment centres); a preferred distance is 32mm. Typically, the centres of the embossments of the lower row are positioned between 13 and 18mm from the respective side laps 4, 5, a preferred distance being 15.9mm. The centres of the embossments of the upper row are typically positioned between 10 and 15mm below the lowermost point of the respective radiussed corner, a preferred distance being 12.2mm. The spacings between the centres of neighbouring embossments of both the upper and lower rows is typically between 32 and 37mm, a preferred spacing being 35mm. The shape and dimensions of the embossments may vary from those illustrated and discussed. Thus, the embossments could be ovoid or generally rectangular. Each crest 1 includes a linear row of hollow projections 9 each of whose interior is generally dovetailed in section. These projections are produced during the roll forming process and define shear connectors between the steel decking and the concrete layer which is poured over the upper surface of the decking in use. The dovetail shaping of each projection allows hangers to be supported therein. The diameter of the lower neck of each projection is typically 12mm and the overall height of each projection is typically 15mm. As will be seen from the drawings, the joins between the crest and the projection are curvilinear. The crests are also formed with two inwardly projecting longitudinal ribs 11 for stiffening WO 2004/061249 PCT/GB2004/000006 6 purposes. The width of these ribs are typically between 9 and 10mm. A preferred width is 9.5mm. The trough 2 is formed with two longitudinal upwardly projecting ribs 14, 15 separated by a solid land section through which shear stud connectors can be positioned. The presence of the ribs assists accurate location of shear stud connectors in use of the decking. The width of each rib 14, 15 is typically 21mm and the spacing between the ribs is typically 50mm. Each end lap 4, 5 carries an interlock. These extend along the entire length of each end lap and are shaped in a complementary fashion to enable two or more steel decks to be joined together to produce a decking of any required width. It will be appreciated that the foregoing is merely exemplary of steel decking in accordance with the invention and that various modifications can readily be made thereto without departing from the true scope of the invention as set out in the appended claims.
Claims (15)
1. Profiled steel decking when used as a component of a composite slab wherein the steel decking is bonded to a layer of concrete, the decking including a steel sheet 5 roll formed to define at least two crests and a trough separated by inclined webs, and wherein the boundaries between the webs and the crests are radiussed to define corners each having a smooth curvilinear profile, the radius of each such corner being between 15 and 30mm. 10
2. Steel decking as claimed in claim 1 wherein the curvilinear corners have a radius of between 20 and 25mm.
3. Steel decking as claimed in any one of the preceding claims wherein each inclined web of the steel decking includes two or more vertically spaced linear rows of 15 embossments which extend outwardly from the outer surface of each inclined web.
4. Steel decking as claimed in claim 3 wherein each embossment is generally circular in section and is produced by roll forming. 20
5. Steel decking as claimed in claim 3 or claim 4 wherein each embossment of the uppermost row is positioned above a land portion separating neighbouring embossments of the lowermost row.
6. Steel decking as claimed in any one of claims 3 to 5 wherein the diameter of 25 each embossment lies within the range 9.0 to 15.0mm.
7. Steel decking as claimed in any one of claims 3 to 6 wherein the spacing between the centres of neighbouring embossments lies within the range 30 to 40mm. 30
8. Steel decking as claimed in any one of claims 3 to 7 wherein the vertical distance between the upper and lower rows of embossments is between 27 and 37mm. C:\o mpXSPEC-749511 doc 8
9. Steel decking as claimed in any one of the preceding claims wherein the trough between the two crests of the decking is formed with two stiffening ribs each of which is spaced generally equidistant from the lowermost end of the respective inclined web. 5
10. Steel decking as claimed in claim 9 wherein the flange portion. defined between the stiffening ribs provides a site for shear stud connectors.
11. Steel decking as claimed in claim 9 or claim 10 wherein the width of each 10 stiffening rib of the trough is between 15 and 25mm.
12. Steel decking as claimed in any one of the preceding claims wherein each crest is formed with a generally 'V' shaped projection which, in use, defines a shear connector between the decking and a concrete layer cast over the upper surface of 15 the decking.
13. Steel decking as claimed in any one of the preceding claims wherein the angle subtended by each inclined web to the horizontal lies within the range of 75 to 850. 20
14. Steel decking as claimed in any one of the preceding claims wherein the decking is roll formed from galvanised steel sheet whose gauge is between 0.8 and 1. 3mm.
15. Profiled steel decking as described herein or as shown in the drawings. T:\DDM\species2O04203734-retyped pages (29.4.09) doc
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0300213A GB2397074B (en) | 2003-01-07 | 2003-01-07 | Profiled steel decking |
| GB0300213.6 | 2003-01-07 | ||
| PCT/GB2004/000006 WO2004061249A1 (en) | 2003-01-07 | 2004-01-05 | Profiled steel decking |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2004203734A1 AU2004203734A1 (en) | 2004-07-22 |
| AU2004203734B2 true AU2004203734B2 (en) | 2009-10-15 |
Family
ID=9950700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2004203734A Expired AU2004203734B2 (en) | 2003-01-07 | 2004-01-05 | Profiled steel decking |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP1587996B1 (en) |
| AT (1) | ATE463629T1 (en) |
| AU (1) | AU2004203734B2 (en) |
| CA (1) | CA2512633C (en) |
| DE (1) | DE602004026403D1 (en) |
| GB (1) | GB2397074B (en) |
| NZ (1) | NZ541319A (en) |
| WO (1) | WO2004061249A1 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2004235640B2 (en) * | 2003-12-12 | 2007-08-16 | Alan Harry Newman | Improvements in tray flooring |
| AU2006251847B2 (en) * | 2005-05-23 | 2012-10-18 | Bluescope Steel Limited | Structural steel decking panel |
| NZ564060A (en) * | 2005-05-23 | 2010-12-24 | Fielders Australia Pty Ltd | Structural steel decking panel |
| GB2456423B (en) * | 2008-01-16 | 2012-06-06 | Kingspan Res & Dev Ltd | A purlin |
| GB0805387D0 (en) * | 2008-03-25 | 2008-04-30 | Studwelders Ltd | Profiled steel floor panel |
| US8672583B1 (en) | 2009-06-05 | 2014-03-18 | Stormtech Llc | Corrugated stormwater chamber having sub-corrugations |
| US9255394B2 (en) | 2009-06-05 | 2016-02-09 | Stormtech Llc | Corrugated stormwater chamber having sub-corrugations |
| GB2496768B (en) * | 2010-06-09 | 2016-04-20 | Korea Inst Construction Tech | Composite deck plate integrated with a bar truss and method for manufacturing the same |
| DE102011100633A1 (en) * | 2011-05-05 | 2012-11-08 | Pilepro Llc | Method for producing a steel profile |
| US9845599B2 (en) | 2014-04-23 | 2017-12-19 | Nucor Corporation | Structural steel decking system and method of securing |
| US9863146B2 (en) | 2015-05-14 | 2018-01-09 | Nucor Corporation | Structural panel systems with a nested sidelap and method of securing |
| CA3018206A1 (en) | 2016-03-21 | 2017-09-28 | Nucor Corporation | Structural systems with improved sidelap and buckling spans |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001066301A1 (en) * | 2000-03-07 | 2001-09-13 | Pullman Industries, Inc. | Vehicle bed edge and manufacturing process |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL147819B (en) * | 1970-09-04 | 1975-11-17 | Hollandse Bouwcombinatie Holla | PROFILED FLOOR PLATE, AS WELL AS CASTED CONCRETE FLOOR IN IT. |
| US3812636A (en) * | 1971-05-26 | 1974-05-28 | Robertson Co H H | Sheet metal decking unit and composite floor construction utilizing the same |
| GB1585471A (en) * | 1976-08-27 | 1981-03-04 | Redpath Dorman Long Ltd | Composite decks |
| US4453364A (en) * | 1980-05-27 | 1984-06-12 | Ting Raymond M L | Corrugated steel decking section |
| US4593506A (en) * | 1982-11-12 | 1986-06-10 | Cyclops Corporation | Cellular flooring system and method of using same |
| GB8316555D0 (en) * | 1983-06-17 | 1983-07-20 | Robertson Uk Ltd H H | Flooring systems |
| US4675238A (en) * | 1984-06-06 | 1987-06-23 | Roll Form Products, Inc. | Metal decking |
| US4726159A (en) * | 1984-07-02 | 1988-02-23 | Consolidated Systems, Inc. | Composite metal/concrete floor and method |
| GB8628436D0 (en) * | 1986-11-27 | 1986-12-31 | Quikspan Construction Ltd | Structural member |
| US4962622A (en) * | 1989-06-01 | 1990-10-16 | H. H. Robertson Company | Profiled sheet metal building unit and method for making the same |
| US5056348A (en) * | 1989-06-01 | 1991-10-15 | Robertson-Ceco Corporation | Method of making a profiled sheet metal building unit |
| FR2704885B1 (en) * | 1993-05-05 | 1995-06-09 | Antropius Jean Daniel | COLLABORATING FORMWORK WITH CONNECTED AREAS. |
-
2003
- 2003-01-07 GB GB0300213A patent/GB2397074B/en not_active Expired - Lifetime
-
2004
- 2004-01-05 NZ NZ541319A patent/NZ541319A/en not_active IP Right Cessation
- 2004-01-05 DE DE602004026403T patent/DE602004026403D1/en not_active Expired - Lifetime
- 2004-01-05 EP EP04700139A patent/EP1587996B1/en not_active Expired - Lifetime
- 2004-01-05 AU AU2004203734A patent/AU2004203734B2/en not_active Expired
- 2004-01-05 WO PCT/GB2004/000006 patent/WO2004061249A1/en active Application Filing
- 2004-01-05 AT AT04700139T patent/ATE463629T1/en not_active IP Right Cessation
- 2004-01-05 CA CA2512633A patent/CA2512633C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001066301A1 (en) * | 2000-03-07 | 2001-09-13 | Pullman Industries, Inc. | Vehicle bed edge and manufacturing process |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2004203734A1 (en) | 2004-07-22 |
| CA2512633A1 (en) | 2004-07-22 |
| GB2397074B (en) | 2006-10-11 |
| DE602004026403D1 (en) | 2010-05-20 |
| EP1587996A1 (en) | 2005-10-26 |
| WO2004061249A1 (en) | 2004-07-22 |
| ATE463629T1 (en) | 2010-04-15 |
| GB2397074A (en) | 2004-07-14 |
| EP1587996B1 (en) | 2010-04-07 |
| NZ541319A (en) | 2008-11-28 |
| CA2512633C (en) | 2011-05-03 |
| GB0300213D0 (en) | 2003-02-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGA | Letters patent sealed or granted (standard patent) | ||
| MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |