NZ541319A - Profiled steel decking for use as a component of a composite slab comprising steel and concrete - Google Patents
Profiled steel decking for use as a component of a composite slab comprising steel and concreteInfo
- Publication number
- NZ541319A NZ541319A NZ541319A NZ54131904A NZ541319A NZ 541319 A NZ541319 A NZ 541319A NZ 541319 A NZ541319 A NZ 541319A NZ 54131904 A NZ54131904 A NZ 54131904A NZ 541319 A NZ541319 A NZ 541319A
- Authority
- NZ
- New Zealand
- Prior art keywords
- decking
- steel
- steel decking
- embossments
- crests
- Prior art date
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 56
- 239000010959 steel Substances 0.000 title claims abstract description 56
- 239000002131 composite material Substances 0.000 title claims abstract description 8
- 230000001154 acute effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000012790 confirmation 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)
- Metal Rolling (AREA)
- Glass Compositions (AREA)
Abstract
A profiled steel decking for use as a component of a composite slab is disclosed. The composite slab is comprised of the steel decking bonded to a layer of concrete. The decking is comprised of a steel sheet, roll-formed to define at least two crests (1) and a trough (2) separated by inclined webs (3). The decking is further characterised in that the boundaries between the webs and the crests are radiussed (8) to define corners each having a smooth curvilinear profile, the radius of each such corner being between 15mm and 30mm.
Description
4 13 19
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 comprising steel decking bonded to a layer of concrete cast in situ over the upper surface of the decking.
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. 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.
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.
Examples of traditional steel decking are to be found in US Patents 4144369, 4453364, 4593506, 4675238, 4726159, 4962622 and 3812636. In each of these documents, the corners between the crests of the decking and the uppermost ends of the webs are defined by acute angles.
The present invention sets out to provide improved profiled steel decking which exhibits clear advantages over traditional steel decking.
CONFIRMATION COPY
2
According to the present invention, there is provided a profiled steel decking for use as a component of a composite slab comprising the steel decking bonded to a layer of concrete, the decking comprising a steel sheet roll-formed to define at least two crests and a trough separated by inclined webs, the decking being characterised in that 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 30 mm.
Typically, the curvilinear corners have a radius of between 20 and 25mm.
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 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 12.0mm. 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 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 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
22 AUG 2008
RECEIVED
3
Each crest may be formed with a generally XV' 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 85°. A typical angle is 78.5°.
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/mm2.
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
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 alia 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
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
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.
7
Claims (9)
1. Profiled steel decking for use as a component of a composite slab comprising the steel decking bonded to a layer of concrete, the decking comprising a steel sheet roll-formed to define at least two crests and a trough separated by inclined webs, the decking being characterised in that 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.
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 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.
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 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. 8
8.
9. 13. 14. Steel decking as claimed in any one of claims 3 to 7 wherein he vertical distance between the upper and lower rows of embossments is between 27 and 37mm. 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. Steel decking as claimed in claim 9 wherein the flange portion defined between the stiffening ribs provides a site for shear stud connectors. Steel decking as claimed in claim 9 or claim 10 wherein the width of each stiffening rib of the trough is between 15 and 25mm. 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 the decking. 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 85°. Steel decking as claimed in any one of the preceding claims roll formed from galvanised steel sheet whose gauge is between 0.8 and 1.3mm. Profiled steel decking according to claim 1 and as described herein or as shown in the drawings. g A composite slab comprising profiled steel decking as claimed in any one of the preceding claims bonded to a layer of concrete. END OF CLAIMS
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0300213A GB2397074B (en) | 2003-01-07 | 2003-01-07 | Profiled steel decking |
| PCT/GB2004/000006 WO2004061249A1 (en) | 2003-01-07 | 2004-01-05 | Profiled steel decking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NZ541319A true NZ541319A (en) | 2008-11-28 |
Family
ID=9950700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NZ541319A NZ541319A (en) | 2003-01-07 | 2004-01-05 | Profiled steel decking for use as a component of a composite slab comprising steel and concrete |
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 |
| US9255394B2 (en) | 2009-06-05 | 2016-02-09 | Stormtech Llc | Corrugated stormwater chamber having sub-corrugations |
| US8672583B1 (en) | 2009-06-05 | 2014-03-18 | Stormtech Llc | Corrugated stormwater chamber having sub-corrugations |
| AU2010354819A1 (en) * | 2010-06-09 | 2013-01-24 | Korea Institute Of Construction Technology | Composite deck plate integrated with a bar truss and method for manufacturing 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 |
Family Cites Families (13)
| 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. |
| WO2001066301A1 (en) * | 2000-03-07 | 2001-09-13 | Pullman Industries, Inc. | Vehicle bed edge and manufacturing process |
-
2003
- 2003-01-07 GB GB0300213A patent/GB2397074B/en not_active Expired - Lifetime
-
2004
- 2004-01-05 EP EP04700139A patent/EP1587996B1/en not_active Expired - Lifetime
- 2004-01-05 DE DE602004026403T patent/DE602004026403D1/en not_active Expired - Lifetime
- 2004-01-05 AU AU2004203734A patent/AU2004203734B2/en not_active Expired
- 2004-01-05 NZ NZ541319A patent/NZ541319A/en not_active IP Right Cessation
- 2004-01-05 WO PCT/GB2004/000006 patent/WO2004061249A1/en active Application Filing
- 2004-01-05 CA CA2512633A patent/CA2512633C/en not_active Expired - Fee Related
- 2004-01-05 AT AT04700139T patent/ATE463629T1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| GB2397074B (en) | 2006-10-11 |
| ATE463629T1 (en) | 2010-04-15 |
| DE602004026403D1 (en) | 2010-05-20 |
| CA2512633A1 (en) | 2004-07-22 |
| GB0300213D0 (en) | 2003-02-05 |
| AU2004203734A1 (en) | 2004-07-22 |
| GB2397074A (en) | 2004-07-14 |
| EP1587996B1 (en) | 2010-04-07 |
| CA2512633C (en) | 2011-05-03 |
| WO2004061249A1 (en) | 2004-07-22 |
| AU2004203734B2 (en) | 2009-10-15 |
| EP1587996A1 (en) | 2005-10-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102209821B (en) | Formed steel beam for steel-concrete composite beam and slab | |
| TWI444525B (en) | Single strip single web grid tee | |
| CA2512633C (en) | Profiled steel decking | |
| EP2556200B2 (en) | Open web grid runner | |
| WO2000017464A1 (en) | Floor beam | |
| US20070000197A1 (en) | Structural decking system | |
| CA2522163C (en) | Composite construction element, in particular for making wall structures for buildings and process for its manufacture | |
| US4387544A (en) | Reinforcing strips for pre-cast construction elements | |
| JP2005180005A (en) | Precast prestressed concrete web for concrete box girder bridge, and the concrete box girder bridge using the same | |
| AU627245B2 (en) | Profiled steel sheet | |
| US7007434B1 (en) | Building structure element and stiffening plate elements for such an element | |
| JP7499007B2 (en) | Deck plate | |
| GB2250039A (en) | Deck system for concrete flooring | |
| FI84847C (en) | STOMKONSTRUKTION FOER SAMVERKANSBALK. | |
| JP3361789B2 (en) | Steel plate dowel and concrete filled steel pipe with corrugated stopper | |
| WO2011003198A1 (en) | Composite panel and stud and dual slab panel and method | |
| AU2004206038B2 (en) | Structural decking system | |
| JP2023072080A (en) | deck plate | |
| WO2024095039A1 (en) | Composite floor deck member and assembly thereof | |
| EP2412887A1 (en) | Profiled steel deck | |
| WO2007141380A1 (en) | Intermediate floor | |
| RU2034967C1 (en) | Roofing | |
| AU2012268792A1 (en) | Roofing or cladding sheet and method of forming |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RENW | Renewal (renewal fees accepted) | ||
| RENW | Renewal (renewal fees accepted) | ||
| RENW | Renewal (renewal fees accepted) |
Free format text: PATENT RENEWED FOR 3 YEARS UNTIL 05 JAN 2017 BY COMPUTER PACKAGES INC Effective date: 20140128 |
|
| RENW | Renewal (renewal fees accepted) |
Free format text: PATENT RENEWED FOR 1 YEAR UNTIL 05 JAN 2018 BY COMPUTER PACKAGES INC Effective date: 20161220 |
|
| RENW | Renewal (renewal fees accepted) |
Free format text: PATENT RENEWED FOR 1 YEAR UNTIL 05 JAN 2019 BY COMPUTER PACKAGES INC Effective date: 20171219 |
|
| RENW | Renewal (renewal fees accepted) |
Free format text: PATENT RENEWED FOR 1 YEAR UNTIL 05 JAN 2020 BY COMPUTER PACKAGES INC Effective date: 20181218 |
|
| RENW | Renewal (renewal fees accepted) |
Free format text: PATENT RENEWED FOR 1 YEAR UNTIL 05 JAN 2021 BY COMPUTER PACKAGES INC Effective date: 20191218 |
|
| RENW | Renewal (renewal fees accepted) |
Free format text: PATENT RENEWED FOR 1 YEAR UNTIL 05 JAN 2022 BY COMPUTER PACKAGES INC Effective date: 20201218 |
|
| RENW | Renewal (renewal fees accepted) |
Free format text: PATENT RENEWED FOR 1 YEAR UNTIL 05 JAN 2023 BY COMPUTER PACKAGES INC Effective date: 20211217 |
|
| RENW | Renewal (renewal fees accepted) |
Free format text: PATENT RENEWED FOR 1 YEAR UNTIL 05 JAN 2024 BY WYNNE-JONES IP Effective date: 20230106 |
|
| EXPY | Patent expired |