US20040231272A1 - Profiled metal sheet - Google Patents

Profiled metal sheet Download PDF

Info

Publication number
US20040231272A1
US20040231272A1 US10/488,026 US48802604A US2004231272A1 US 20040231272 A1 US20040231272 A1 US 20040231272A1 US 48802604 A US48802604 A US 48802604A US 2004231272 A1 US2004231272 A1 US 2004231272A1
Authority
US
United States
Prior art keywords
regions
adjacent
corner section
section
metal sheet
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
Application number
US10/488,026
Other languages
English (en)
Inventor
Mark Patrick
Henry Wolfkamp
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.)
University of Western Sydney
Metal Forming Technologies Pty Ltd
Original Assignee
Individual
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 Individual filed Critical Individual
Assigned to METAL FORMING TECHNOLOGIES, PTY LTD., UNIVERSITY OF WESTERN SYDNEY reassignment METAL FORMING TECHNOLOGIES, PTY LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WOLFKAMP, HENRY, PATRICK, MARK
Publication of US20040231272A1 publication Critical patent/US20040231272A1/en
Priority to US12/837,108 priority Critical patent/US20100297466A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30Building 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
    • E04C2/32Building 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
    • E04C2/322Building 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
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B5/36Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
    • E04B5/38Floor 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
    • E04B5/40Floor 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
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/08Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of metal, e.g. sheet metal
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/12All metal or with adjacent metals
    • Y10T428/1241Nonplanar uniform thickness or nonlinear uniform diameter [e.g., L-shape]

Definitions

  • the present invention relates to the construction of composite slabs that include:
  • profiled metal sheets include:
  • One of the failure modes of composite slabs is by longitudinal slip between profiled metal sheets and concrete or other castable material on the sheets.
  • An object of the present invention is to provide a composite slab that has improved longitudinal slip resistance compared with that of composite slabs known to the applicant.
  • the present invention provides a profiled metal sheet for use in the construction of composite slabs.
  • the sheet includes a plurality of parallel longitudinal ribs separated by pans and male and female members at opposite sides of the sheet that enable adjacent sheets to be connected together in overlapping relationship.
  • At least one of the ribs, male members and female members has a side that extends from the pan that is adjacent the rib or the member.
  • the side includes a re-entrant section and a corner section that connects the side and the adjacent pan.
  • the corner section includes a plurality of regions at spaced intervals along the length of the corner section that extend outwardly compared with adjacent regions of the corner section. The spaced regions are provided to improve longitudinal slip resistance of composite slabs formed from the sheet.
  • a profiled metal sheet that includes: a plurality of parallel longitudinal ribs separated by pans, and male and female members at opposite sides of the sheet that enable adjacent sheets to be connected together by inserting a male member into a female member, at least one of the male and female members having a side that extends from the pan that is adjacent the member, the side including a re-entrant section, and a corner section that connects the side and the adjacent pan, and the corner section including a plurality of regions at spaced intervals along the length of the corner section that extend outwardly compared with adjacent regions of the corner section.
  • a profiled metal sheet that includes: a plurality of parallel ribs separated by pans, and male and female members at opposite sides of the sheet that enable adjacent sheets to be connected together by inserting a male member into a female member, each rib having a pair of opposed sides that extend from adjacent pans, at least one side including a re-entrant section, and a corner section that connects each side and the adjacent pan, and one corner section at a side that has a re-entrant section or at least one such corner section including a plurality of regions at spaced intervals along the length of the corner section that extend outwardly compared with adjacent regions of the corner section.
  • a profiled metal sheet that includes: a plurality of parallel ribs separated by pans, and male and female members at opposite sides of the sheet that enable adjacent sheets to be connected together by inserting a male member into a female member, each rib having a pair of opposed sides that extend from adjacent pans, at least one of the male and female members having a side that extends from the pan that is adjacent the member, at least one side of the ribs including a re-entrant section, at least one side of the male and female members including a re-entrant section, and a corner section that connects each side of the ribs and the male and female members and the adjacent pans, and one corner section at a side that has a re-entrant section or at least one such corner section including a plurality of regions at spaced intervals along the length of the corner section that extend outwardly compared with adjacent regions of the corner section.
  • the re-entrant sections lock together the concrete or other castable material and the sheet.
  • the location of the outwardly extending regions in the corner section or corner sections of the ribs and/or of the male members and/or of the female members is such that, when concrete slips longitudinally relative to the sheet and thereby generates lateral forces against the outwardly extending regions (which tend to push the regions inwardly), tensile stresses develop in the sheet transversely to the longitudinal direction of the ribs in response to the lateral forces, and the tensile stresses resist the concrete-generated lateral forces.
  • the outwardly extending regions may be any suitable shape.
  • the outwardly extending regions are in the form of crimps.
  • the crimps extend transversely to the lengthwise direction of the ribs.
  • the outwardly extending regions may be formed by any suitable means.
  • the outwardly extending regions may be roll-formed in the profiled metal sheet.
  • the outwardly extending regions extend at least 4 mm beyond adjacent regions of the corner section.
  • the outwardly extending regions extend at least 5 mm beyond the adjacent regions.
  • the spacing between the outwardly extending regions is at least 15 mm.
  • the spacing between the outwardly extending regions is at least 30 mm.
  • the spacing between the outwardly extending regions be at least 50 mm.
  • the spacing between the outwardly extending regions is less than 95 mm.
  • the spacing between the outwardly extending regions is less than 80 mm.
  • the re-entrant section may form a small part only of the side of the rib or the male member or the female member.
  • the re-entrant section may form substantially all of the side of the rib or the male member or the female member.
  • each rib Preferably the opposed sides of each rib extend generally upwardly and inwardly towards each other from the adjacent pans.
  • a composite slab that includes the above-described profiled metal sheet and a layer of hardened concrete or other suitable castable material on the sheet.
  • FIG. 1 is a perspective view of one embodiment of a profiled metal sheet in accordance with the present invention.
  • FIG. 2 is an end elevation of the sheet shown in, FIG. 1;
  • FIG. 3 is an enlarged end elevation of a part of a composite slab formed from the sheet shown in FIG. 2 which illustrates the forces generated by longitudinal slip of concrete relative to the sheet;
  • FIG. 4 is an enlarged end elevation of a part of a composite slab formed from another embodiment of a profiled metal sheet in accordance with the present invention.
  • profiled metal sheets shown in the figures are described hereinafter in the context of the construction of composite floor slabs that include the profiled metal sheets and a layer of concrete on the upper surface of the sheets (as viewed in the figures).
  • the profiled metal sheet shown in FIGS. 1 to 3 is formed by roll-forming a flat sheet of steel.
  • the sheet includes two longitudinal parallel ribs generally identified by the numeral 5 separated by flat pans 7 .
  • the sides of the sheet are formed as a male connection member 9 and a female connection member 11 .
  • the arrangement of the male and female members 9 , 11 enables adjacent sheets to be positioned together in overlapping relationship with a leak proof lap join by inserting the male member 9 of one sheet into the female member 11 of the adjacent sheet.
  • Each rib 5 of the sheet includes a top flange 13 which separates two sides, generally identified by the numeral 15 .
  • Each side 15 includes a first section 17 that extends outwardly and downwardly from the top flange 5 , a second section 19 that extends downwardly and inwardly from the lower edge of the first section 17 , and a third section 21 that extends downwardly and outwardly from the lower edge of the second section 19 and connects the side and the adjacent pan 7 .
  • the junction of the third section 21 and the pan 7 forms a corner section 21 .
  • the angle of the corner section 21 , as described by the third section 21 and the pan 7 is between 70-100°.
  • the junction of the second section 19 and the third section 21 forms a corner section 33 .
  • the angle described by the second section 19 and the third section 21 less than 100°, more preferably less than 90°.
  • the second section 19 defines a re-entrant section of the rib 5 .
  • the sheet further includes a series of regions 23 in the corner 21 on the left side of the left rib 5 shown in the FIGS.
  • the regions 23 are provided to cooperate with the re-entrant sections 19 of the ribs 5 to contribute to the longitudinal slip resistance of a composite slab formed from the sheet and concrete and other suitable castable material on the sheet.
  • the regions 23 are at spaced intervals along the length of the corner 21 .
  • the regions 23 are outwardly extending regions when compared with adjacent regions of the corner 21 .
  • the spacing of the regions 23 is 30-80 mm.
  • the regions 23 extend outwardly at least 5 mm from adjacent regions of the corner 21 .
  • the regions 23 are provided to cooperate with the re-entrant sections 19 of the ribs 5 to contribute to the longitudinal slip resistance of a composite slab formed from the sheet and concrete and other suitable castable material on the sheet.
  • the re-entrant sections 19 lock together the sheet and the concrete. More particularly, as shown in FIG. 3, the concrete generates a bearing force F 1 against the corner 33 of the re-entrant section 19 and the third section 12 of the rib 5 shown in the Figure. In effect, the bearing force F 1 pins the corner 33 .
  • the lateral forces are identified by the letter F 2 and the tensile stresses are identified by the letter T.
  • FIG. 4 illustrates an enlarged section of a composite slab that includes another embodiment of a profiled metal sheet.
  • the sheet shown in FIG. 4 includes a rib 5 that has a top flange 13 which separates two sides 15 .
  • the sides 15 also include re-entrant sections. However, in this embodiment the sides 15 form a dovetail formation, whereby in effect the re-entrant sections are substantially all of the sides 15 . Nevertheless, the forces acting on the sheet are the same for both embodiments.
  • FIGS. 1 to 3 include outwardly extending regions 23 along the length of the corner 21 on the left side of the left rib 5 shown in the FIGS.
  • the present invention is not limited to this arrangement and the regions 23 may be provided in any one or more of the corners 21 of the ribs 5 .
  • the present invention extends to arrangements in which one or both of the male and female members 7 , 9 include re-entrant sections and outwardly extending regions in the corners of the male and female members 7 , 9 .
  • the present invention extends to other profiles of ribs and male and female members which have re-entrant sections.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Building Environments (AREA)
  • Panels For Use In Building Construction (AREA)
  • Finishing Walls (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Bridges Or Land Bridges (AREA)
US10/488,026 2001-08-27 2002-08-27 Profiled metal sheet Abandoned US20040231272A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/837,108 US20100297466A1 (en) 2001-08-27 2010-07-15 Profiled Metal Sheet

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPR7301 2001-08-27
AUPR7301A AUPR730101A0 (en) 2001-08-27 2001-08-27 Profiled metal sheet
PCT/AU2002/001158 WO2003018927A1 (en) 2001-08-27 2002-08-27 Profiled metal sheet

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/837,108 Continuation US20100297466A1 (en) 2001-08-27 2010-07-15 Profiled Metal Sheet

Publications (1)

Publication Number Publication Date
US20040231272A1 true US20040231272A1 (en) 2004-11-25

Family

ID=3831254

Family Applications (2)

Application Number Title Priority Date Filing Date
US10/488,026 Abandoned US20040231272A1 (en) 2001-08-27 2002-08-27 Profiled metal sheet
US12/837,108 Abandoned US20100297466A1 (en) 2001-08-27 2010-07-15 Profiled Metal Sheet

Family Applications After (1)

Application Number Title Priority Date Filing Date
US12/837,108 Abandoned US20100297466A1 (en) 2001-08-27 2010-07-15 Profiled Metal Sheet

Country Status (7)

Country Link
US (2) US20040231272A1 (zh)
EP (1) EP1430186A4 (zh)
CN (1) CN1316129C (zh)
AU (2) AUPR730101A0 (zh)
HK (1) HK1072090A1 (zh)
NZ (1) NZ531441A (zh)
WO (1) WO2003018927A1 (zh)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150240501A1 (en) * 2014-02-27 2015-08-27 Cheng-Hung YANG Combination frame material
US20170170775A1 (en) * 2013-11-26 2017-06-15 Arcelormittal Panel, panel assembly and associated roofing
US11098480B2 (en) * 2017-01-22 2021-08-24 Wai Hong WONG Hollow floor slab formwork, hollow floor slab structure and method for constructing hollow floor slab structure
USD949441S1 (en) * 2019-04-23 2022-04-19 Epic Metals Corporation Roofing deck
USD949442S1 (en) * 2019-04-23 2022-04-19 Epic Metals Corporation Roofing deck
USD950108S1 (en) * 2019-04-23 2022-04-26 Epic Metals Corporation Roofing deck

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8033070B2 (en) 2001-06-29 2011-10-11 M.I.C. Industries, Inc. Building panel and panel crimping machine
US7647737B2 (en) 2004-10-15 2010-01-19 M.I.C. Industries, Inc. Building panel and building structure
NZ564060A (en) * 2005-05-23 2010-12-24 Fielders Australia Pty Ltd Structural steel decking panel
AU2006251847B2 (en) * 2005-05-23 2012-10-18 Bluescope Steel Limited Structural steel decking panel
CN101386127B (zh) * 2008-10-10 2010-06-16 西安交通大学 一种应变强化金字塔结构夹层板的制备方法
US8117879B2 (en) 2008-12-12 2012-02-21 M.I.C. Industries, Inc. Curved building panel, building structure, panel curving system and methods for making curved building panels
DE102011100633A1 (de) 2011-05-05 2012-11-08 Pilepro Llc Verfahren zur Herstellung eines Stahlprofils
US9697532B2 (en) * 2014-02-28 2017-07-04 Cellco Partnership Integrated platform employee transaction processing for buy your own device (BYOD)
EP3467226A1 (en) 2017-10-09 2019-04-10 HeidelbergCement AG Composite building elements

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4144369A (en) * 1976-08-27 1979-03-13 Redpath Dorman Long Limited Composite deck panel
US4406106A (en) * 1979-04-05 1983-09-27 Dinges Kenneth N Concealed fastener panel construction and method of installation
US4467582A (en) * 1982-09-29 1984-08-28 H. H. Robertson Company Joint retention clip for rib-like panel joint
US4486998A (en) * 1982-05-07 1984-12-11 H. H. Robertson Company Concealed fastener roof or wall structure and method of assembly
US4962622A (en) * 1989-06-01 1990-10-16 H. H. Robertson Company Profiled sheet metal building unit and method for making the same
US5600928A (en) * 1995-07-27 1997-02-11 Uc Industries, Inc. Roof vent panel
US5636488A (en) * 1993-06-23 1997-06-10 Stramit Corporation Limited Panel and clip arrangement
US5809721A (en) * 1993-05-05 1998-09-22 Antropius; Jean Daniel Collaborating formwork with connected edges

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2870981A (en) * 1957-08-06 1959-01-27 Associated Box Corp Platform
US3150707A (en) * 1961-04-27 1964-09-29 Howell Pat Apparatus for making metal building and building elements
US3812636A (en) * 1971-05-26 1974-05-28 Robertson Co H H Sheet metal decking unit and composite floor construction utilizing the same
FR2221601A1 (en) * 1973-03-12 1974-10-11 Thelle Ingenierie Const Metal Reinforced concrete floor with shuttering - has shuttering in form of troughs of joined corrugated metal sheets
CH629560A5 (en) * 1977-03-25 1982-04-30 Hoesch Werke Ag Profiled metal sheet for the reinforcement of a concrete composite floor
US4675238A (en) * 1984-06-06 1987-06-23 Roll Form Products, Inc. Metal decking
GB9815590D0 (en) * 1998-07-18 1998-09-16 Ward Building Components Limit Sheet decking
US6357191B1 (en) * 2000-02-03 2002-03-19 Epic Metals Corporation Composite deck

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4144369A (en) * 1976-08-27 1979-03-13 Redpath Dorman Long Limited Composite deck panel
US4406106A (en) * 1979-04-05 1983-09-27 Dinges Kenneth N Concealed fastener panel construction and method of installation
US4486998A (en) * 1982-05-07 1984-12-11 H. H. Robertson Company Concealed fastener roof or wall structure and method of assembly
US4467582A (en) * 1982-09-29 1984-08-28 H. H. Robertson Company Joint retention clip for rib-like panel joint
US4962622A (en) * 1989-06-01 1990-10-16 H. H. Robertson Company Profiled sheet metal building unit and method for making the same
US5809721A (en) * 1993-05-05 1998-09-22 Antropius; Jean Daniel Collaborating formwork with connected edges
US5636488A (en) * 1993-06-23 1997-06-10 Stramit Corporation Limited Panel and clip arrangement
US5600928A (en) * 1995-07-27 1997-02-11 Uc Industries, Inc. Roof vent panel

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170170775A1 (en) * 2013-11-26 2017-06-15 Arcelormittal Panel, panel assembly and associated roofing
US9813016B2 (en) * 2013-11-26 2017-11-07 Arcelormittal Panel, panel assembly and associated roofing
US20150240501A1 (en) * 2014-02-27 2015-08-27 Cheng-Hung YANG Combination frame material
US11098480B2 (en) * 2017-01-22 2021-08-24 Wai Hong WONG Hollow floor slab formwork, hollow floor slab structure and method for constructing hollow floor slab structure
USD949441S1 (en) * 2019-04-23 2022-04-19 Epic Metals Corporation Roofing deck
USD949442S1 (en) * 2019-04-23 2022-04-19 Epic Metals Corporation Roofing deck
USD950108S1 (en) * 2019-04-23 2022-04-26 Epic Metals Corporation Roofing deck

Also Published As

Publication number Publication date
NZ531441A (en) 2004-06-25
HK1072090A1 (en) 2005-08-12
US20100297466A1 (en) 2010-11-25
WO2003018927A8 (en) 2004-02-05
AUPR730101A0 (en) 2001-09-20
CN1316129C (zh) 2007-05-16
CN1558978A (zh) 2004-12-29
WO2003018927A1 (en) 2003-03-06
EP1430186A1 (en) 2004-06-23
AU2002325634C1 (en) 2018-10-25
EP1430186A4 (en) 2006-09-27
AU2002325634B2 (en) 2007-09-06

Similar Documents

Publication Publication Date Title
US20100297466A1 (en) Profiled Metal Sheet
AU2002325634A1 (en) Profiled metal sheet
US10316519B2 (en) Structural panel systems with a nested sidelap and method of securing
US5404686A (en) Construction arrangement including multiple panels provided with interlocking edges and related methods
US6691482B1 (en) Decking
AU2006230984B2 (en) C-shaped profile
US3253377A (en) Integratable structural panels
US20090100776A1 (en) Formwork
AU627245B2 (en) Profiled steel sheet
EP1258574A3 (en) A load-bearing composite slab for buildings
CA1166469A (en) Corrugated steel decking section
US20050144879A1 (en) Strip for forming floor coverings
CA2273139A1 (en) I-beam for building structures
JP5300644B2 (ja) 端部閉塞フラットデッキプレートを用いた建築構造物のrcスラブ構築方法
JP5134836B2 (ja) H形断面部材の継手構造
EP3553251B1 (en) Assembly as well as a supporting structure and a profile for such an assembly
RU2779864C2 (ru) Система соединения для панелей напольного настила
JP3050108U (ja) 建築用内外装板
AU2018100227A4 (en) Improvements in Joists
EP0104629A1 (en) Combined construction plate
JP2507333B2 (ja) 縦目地構造
WO2022070151A1 (en) Connecting system for the construction of a partition wall
AU2005201848A1 (en) A decking sheet
JP2966614B2 (ja) 縦目地構造
JP2517596Y2 (ja) 壁パネルの連結構造

Legal Events

Date Code Title Description
AS Assignment

Owner name: METAL FORMING TECHNOLOGIES, PTY LTD., AUSTRALIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:PATRICK, MARK;WOLFKAMP, HENRY;REEL/FRAME:015601/0266;SIGNING DATES FROM 20040402 TO 20040408

Owner name: UNIVERSITY OF WESTERN SYDNEY, AUSTRALIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:PATRICK, MARK;WOLFKAMP, HENRY;REEL/FRAME:015601/0266;SIGNING DATES FROM 20040402 TO 20040408

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION