GB2397074A - Profiled steel decking - Google Patents

Profiled steel decking Download PDF

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Publication number
GB2397074A
GB2397074A GB0300213A GB0300213A GB2397074A GB 2397074 A GB2397074 A GB 2397074A GB 0300213 A GB0300213 A GB 0300213A GB 0300213 A GB0300213 A GB 0300213A GB 2397074 A GB2397074 A GB 2397074A
Authority
GB
United Kingdom
Prior art keywords
decking
steel decking
steel
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.)
Granted
Application number
GB0300213A
Other versions
GB0300213D0 (en
GB2397074B (en
Inventor
Derek Leonard Mullett
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Corus UK Ltd
Original Assignee
Corus UK Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Corus UK Ltd filed Critical Corus UK Ltd
Priority to GB0300213A priority Critical patent/GB2397074B/en
Publication of GB0300213D0 publication Critical patent/GB0300213D0/en
Priority to EP04700139A priority patent/EP1587996B1/en
Priority to PCT/GB2004/000006 priority patent/WO2004061249A1/en
Priority to CA2512633A priority patent/CA2512633C/en
Priority to NZ541319A priority patent/NZ541319A/en
Priority to AU2004203734A priority patent/AU2004203734B2/en
Priority to AT04700139T priority patent/ATE463629T1/en
Priority to DE602004026403T priority patent/DE602004026403D1/en
Publication of GB2397074A publication Critical patent/GB2397074A/en
Application granted granted Critical
Publication of GB2397074B publication Critical patent/GB2397074B/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E04B5/36—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

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  • Architecture (AREA)
  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)
  • Finishing Walls (AREA)
  • Paper (AREA)
  • Soil Working Implements (AREA)
  • Bridges Or Land Bridges (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

PROFILED STEEL DECKING
This invention relates to profiled steel decking. More especially, the invention concerns profiled steel decking for use inter alla 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.
The present invention sets out 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 decking which comprises a steel sheet roll formed to define at least two crests and a trough separated by inclined webs, the boundaries between the webs and the crests being radiussed to define corners each having a smooth curvilinear profile.
Preferably, the curvilinear corners have a radius of between 15 and 30mm. 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 rib 20mm.
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 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 dockings in accordance with the invention.
The steel decking illustrated in the drawings is rolled 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 an interlock 6, 7 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 curvilinear 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 alla 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 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 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 2Imm 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.

Claims (16)

1. Profiled steel decking which comprises a steel sheet roll formed to define at least two crests and a trough separated by inclined webs, the boundaries between the webs and the crests being radiussed to define corners each having a smooth curvilinear profile.
2. Steel decking as claimed in claim 1 wherein the curvilinear corners have a radius of between 15 and 30mm.
3. Steel decking as claimed in claim 2 wherein the curvilinear corners have a radius of between 20 and 25mm.
4. 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.
5. Steel decking as claimed in claim 4 wherein each embossment is generally circular in section and is produced by roll forming.
6. Steel decking as claimed in claim 4 or claim 5 wherein each embossment of the uppermost row is positioned above a land portion separating neighbouring embossments of the lowermost row.
7. Steel decking as claimed in any one of claims 4 to 6 wherein the diameter of each embossment lies within the range 9.0 to 15.0mm.
8. Steel decking as claimed in any one of claims 4 to 7 wherein the spacing between the centres of neighbouring embossments lies within the range 30 to 40mm.
9. Steel decking as claimed in any one of claims 4 to 8 wherein he vertical distance between the upper and lower rows of embossments is between 27 and 37mm.
10. 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.
11. Steel decking as claimed in claim 10 wherein the flange portion defined between the stiffening ribs provides a site for shear stud connectors.
12. Steel decking as claimed in claim 10 or claim 11 wherein the width of each stiffening rib of the trough is between 15 and 25mm.
13. 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.
14. 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 .
15. 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.
16. Profiled steel decking substantially as herein described and as described with reference to the accompanying diagrammatic drawings.
GB0300213A 2003-01-07 2003-01-07 Profiled steel decking Expired - Lifetime GB2397074B (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
GB0300213A GB2397074B (en) 2003-01-07 2003-01-07 Profiled steel decking
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
PCT/GB2004/000006 WO2004061249A1 (en) 2003-01-07 2004-01-05 Profiled steel decking
CA2512633A CA2512633C (en) 2003-01-07 2004-01-05 Profiled steel decking
EP04700139A EP1587996B1 (en) 2003-01-07 2004-01-05 Composite structure
AU2004203734A AU2004203734B2 (en) 2003-01-07 2004-01-05 Profiled steel decking
AT04700139T ATE463629T1 (en) 2003-01-07 2004-01-05 COMPOSITE STRUCTURE
DE602004026403T DE602004026403D1 (en) 2003-01-07 2004-01-05 composite structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0300213A GB2397074B (en) 2003-01-07 2003-01-07 Profiled steel decking

Publications (3)

Publication Number Publication Date
GB0300213D0 GB0300213D0 (en) 2003-02-05
GB2397074A true GB2397074A (en) 2004-07-14
GB2397074B GB2397074B (en) 2006-10-11

Family

ID=9950700

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0300213A Expired - Lifetime GB2397074B (en) 2003-01-07 2003-01-07 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)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006125248A1 (en) * 2005-05-23 2006-11-30 Fielders Australia Pty Ltd Structural steel decking panel
AU2004235640B2 (en) * 2003-12-12 2007-08-16 Alan Harry Newman Improvements in tray flooring
GB2456422A (en) * 2008-01-16 2009-07-22 Kingspan Res & Dev Ltd Sheet decking
WO2009118498A1 (en) * 2008-03-25 2009-10-01 Composite Metal Flooring Ltd Profiled steel deck
AU2006251847B2 (en) * 2005-05-23 2012-10-18 Bluescope Steel Limited Structural steel decking panel
WO2012150352A3 (en) * 2011-05-05 2013-05-16 Origami Steel Corp. Method and device for producing a steel profiled element and said type of steel profiled element
US20150308116A1 (en) * 2014-04-23 2015-10-29 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
US10370851B2 (en) 2016-03-21 2019-08-06 Nucor Corporation Structural systems with improved sidelap and buckling spans

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
KR101505719B1 (en) * 2010-06-09 2015-03-26 한국건설기술연구원 Method for manufacturing composite deck plate integrated with a bar truss

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3812636A (en) * 1971-05-26 1974-05-28 Robertson Co H H Sheet metal decking unit and composite floor construction utilizing the same
US4144369A (en) * 1976-08-27 1979-03-13 Redpath Dorman Long Limited Composite deck panel
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
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
US4962622A (en) * 1989-06-01 1990-10-16 H. H. Robertson Company Profiled sheet metal building unit and method for making the same

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NL147819B (en) * 1970-09-04 1975-11-17 Hollandse Bouwcombinatie Holla PROFILED FLOOR PLATE, AS WELL AS CASTED CONCRETE FLOOR IN IT.
GB8316555D0 (en) * 1983-06-17 1983-07-20 Robertson Uk Ltd H H Flooring systems
GB8628436D0 (en) * 1986-11-27 1986-12-31 Quikspan Construction Ltd Structural member
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.
JP2003525802A (en) * 2000-03-07 2003-09-02 プルマン インダストリーズ， インク． End of vehicle carrier and method of manufacturing the same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3812636A (en) * 1971-05-26 1974-05-28 Robertson Co H H Sheet metal decking unit and composite floor construction utilizing the same
US4144369A (en) * 1976-08-27 1979-03-13 Redpath Dorman Long Limited Composite deck panel
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
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
US4962622A (en) * 1989-06-01 1990-10-16 H. H. Robertson Company Profiled sheet metal building unit and method for making the same

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2004235640B2 (en) * 2003-12-12 2007-08-16 Alan Harry Newman Improvements in tray flooring
WO2006125248A1 (en) * 2005-05-23 2006-11-30 Fielders Australia Pty Ltd Structural steel decking panel
AU2006251847B2 (en) * 2005-05-23 2012-10-18 Bluescope Steel Limited Structural steel decking panel
GB2456422A (en) * 2008-01-16 2009-07-22 Kingspan Res & Dev Ltd Sheet decking
GB2456422B (en) * 2008-01-16 2012-05-02 Kingspan Res & Dev Ltd Sheet decking
WO2009118498A1 (en) * 2008-03-25 2009-10-01 Composite Metal Flooring Ltd Profiled steel deck
US20110047933A1 (en) * 2008-03-25 2011-03-03 Composite Metal Flooring Ltd Profiled steel deck
EP2412887A1 (en) 2008-03-25 2012-02-01 Composite Metal Flooring Ltd Profiled steel deck
WO2012150352A3 (en) * 2011-05-05 2013-05-16 Origami Steel Corp. Method and device for producing a steel profiled element and said type of steel profiled element
US9199292B2 (en) 2011-05-05 2015-12-01 Origami Steel Corp. Method for producing steel profiles
EA027891B1 (en) * 2011-05-05 2017-09-29 Оригами Стил Корп. Method for producing a steel profile
US20150308116A1 (en) * 2014-04-23 2015-10-29 Nucor Corporation Structural steel decking system and method of securing
US9845599B2 (en) * 2014-04-23 2017-12-19 Nucor Corporation Structural steel decking system and method of securing
US10465384B2 (en) 2014-04-23 2019-11-05 Nucor Corporation Structural decking system
US9863146B2 (en) 2015-05-14 2018-01-09 Nucor Corporation Structural panel systems with a nested sidelap and method of securing
US10316519B2 (en) 2015-05-14 2019-06-11 Nucor Corporation Structural panel systems with a nested sidelap and method of securing
US10370851B2 (en) 2016-03-21 2019-08-06 Nucor Corporation Structural systems with improved sidelap and buckling spans
US10808403B2 (en) 2016-03-21 2020-10-20 Nucor Corporation Structural systems with improved sidelap and buckling spans

Also Published As

Publication number Publication date
AU2004203734B2 (en) 2009-10-15
GB0300213D0 (en) 2003-02-05
AU2004203734A1 (en) 2004-07-22
ATE463629T1 (en) 2010-04-15
CA2512633C (en) 2011-05-03
NZ541319A (en) 2008-11-28
GB2397074B (en) 2006-10-11
EP1587996A1 (en) 2005-10-26
EP1587996B1 (en) 2010-04-07
DE602004026403D1 (en) 2010-05-20
WO2004061249A1 (en) 2004-07-22
CA2512633A1 (en) 2004-07-22

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Legal Events

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S73 Revocation on comptroller's initiative (section 73/patents act 1977)

Free format text: REVOCATION NOT PROCEEDED WITH; PATENT NOT PROCEEDED WITH ON 13 JULY 2011

PE20 Patent expired after termination of 20 years

Expiry date: 20230106