EP1816272A2 - Verbesserungen bei oder in Zusammenhang mit Balkenaufhängungen und Ähnlichem - Google Patents
Verbesserungen bei oder in Zusammenhang mit Balkenaufhängungen und Ähnlichem Download PDFInfo
- Publication number
- EP1816272A2 EP1816272A2 EP07250301A EP07250301A EP1816272A2 EP 1816272 A2 EP1816272 A2 EP 1816272A2 EP 07250301 A EP07250301 A EP 07250301A EP 07250301 A EP07250301 A EP 07250301A EP 1816272 A2 EP1816272 A2 EP 1816272A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- joist
- combination
- socket
- hanger
- section
- 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.)
- Withdrawn
Links
- 239000002184 metal Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 239000002023 wood Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 239000005060 rubber Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000011093 chipboard Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000834 fixative Substances 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
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
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
- E04B5/12—Load-carrying floor structures formed substantially of prefabricated units with wooden beams
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
- E04B1/2604—Connections specially adapted therefor
- E04B1/2612—Joist hangers
Definitions
- This invention concerns joist hangers and in particular joist hangers which are to be employed in locating pre-fabricated floor panels by engaging and supporting ends of joists forming part of such panels. It is to be understood that a floor panel between floors of a building can also be thought of as a ceiling panel when viewed from below and the expression floor panel employed herein is intended to cover both.
- Each panel is comprised of a plurality of parallel spaced apart joists below and secured to a decking sheet of wood such as plywood or chipboard or the like.
- the latter typically includes lifting eyes by which the assembly can be lifted into place by a crane during construction.
- the load bearing components of the panel are the joists, it is necessary for at least the ends of the joists to rest on load bearing walls or into the sockets of joist hangers attached to walls or timber beams.
- This method of assembly of the floors and ceilings of a building is especially popular in the case of so-called timber framed buildings, where the load bearing walls are constructed from timber panels which are secured at their ends to form corners or longer runs of walls. Furthermore it is customary for the buildings to be pre-assembled where the wall and floor panels are constructed. In this way the positions of the joists relative to ring beam timbers or upper edges of wall panels or intermediate beams on which they are to be supported, can be determined, and the joist hangers secured to the relevant timber while the floor panels are in position. The floor panels can then be lifted clear of the supporting joist hangers and the pre-assembled building parts dismantled to allow them to be shipped to where the building is to be permanently constructed.
- the assembly of floor panels to beams and walls is greatly simplified.
- the nails or screws used to secure the ends of the joists to the cheeks of the hangers can be inserted after the panel has been lowered into position, since the ends of the joists will be fully supported by the hangers even though they are not secured to the cheeks of the hangers.
- the present invention provides a modified joist hanger and a method of assembly of a building, each of which helps to overcome this problem.
- a joist hanger comprising one or more open-topped joist receiving sockets, each socket being defined by two side cheeks and a bridge section which joins the lower ends of the two side cheeks, the joist hanger further comprising one or more flanges by which the hanger can be secured to an abutting face and/or upper edge of a wall or beam, characterised in that the two side cheeks diverge from the bridge section to the open top of the joist receiving socket, so that the width of the socket is greater at the top than the bottom, such that a joist will fit snugly in the socket between the two side cheeks in the region of the bridge section but the upper portion of the socket is wider to facilitate entry thereinto of the joist.
- each socket allows a joist-containing floor panel to be lowered into position without the precision needed if the side cheeks of the joist hanger sockets are parallel, since it is only necessary to position the floor panels so that the lower edges of the joists register with the wider openings in the hanger sockets.
- each joist end may be held captive over the full depth of the joist and to this end the cross section of at least the end of each joist may preferably be trapezoidal so as to form a wedge, the diverging faces of which diverge with an included angle similar to (but not greater than) that by which cheeks of the hanger socket diverge.
- the invention provides a combination of a joist hanger as defined above, with a joist received in the joist receiving socket of the joist hanger.
- the joist hanger is typically formed of metal, such as steel, but could be formed from any sufficiently rigid, durable material.
- the joists used with the joist hanger of the invention are typically formed wholly or predominantly of timber.
- the joist may conveniently be of rectangular cross-section or I-shaped cross-section along most of its length, but it is also possible that the joist may possess the trapezoidal cross section over its whole length.
- Alternatively means may be provided for locating between the joist ends and the side cheeks of a hanger as aforesaid, to fill the triangular gaps and provide full support for the joist over the whole of the depth.
- triangular cross section fillets may be fitted between the faces of the joist and the side cheeks of the hanger to fill the space therebetween.
- the fillets may be secured to the opposite faces of the end of each joist.
- the fillets may for example be of wood or metal or rubber or plastics material and they may be nailed, stapled, screwed or stuck to the joist faces.
- the two fillets may be replaced by a single wedge shaped member having a central slot into which the end of a joist can be fitted. Again such members may be secured to the joist as by nailing, stapling, screwing or by an adhesive or by virtue of interference fit between the sides of the slot and the joist.
- the trapezoidal end cross section may be achieved in a similar manner with fillets secured for example to opposite faces of the central web of the I-beam, or by a slotted wedge adapted to receive and be secured to the end of the joist typically to an end of the central web.
- the trapezoidal shape may be formed by a metal structure comprising one or two parts adapted to be fitted to the upper and lower rails of the I-beam so as to extend therebetween, the outer faces of the metal structure being spaced from the central web by a greater distance in the region of the upper rail than in the region of the lower rail, so as to from the trapezoidal shape.
- the included angle between the inclined faces of the fillets or metal structure is substantially the same as, but not greater than, that between the diverging cheeks of a joist hanger constructed in accordance with the one aspect of the invention, to which the joist is to be fitted.
- the joist hanger top flange or flanges which are to overlie a wall or beam, extend orthogonally from the plane of the flange or flanges which will in use abut and be secured to the face of the wall or beam, but parallel to the bridging section at the lower ends of the two cheeks.
- the top flange(s) will be square to and lie flat on the upper surface of the wall or beam.
- the improved joist hanger proposed by the present invention is significantly different from conventional joist hangers which may on occasions be supplied with the cheeks bent so that they diverge but in order to be fitted to a beam or wall, the cheeks must first be bent so as to be parallel, to enable the top flanges to lie square to the top of the wall or beam on which they are to rest and to which secured.
- a conventional joist hanger to be attached to a beam or wall, so that the cheeks are splayed apart the top flanges of such a hanger would not lie square to and flat on the top of the beam or the wall.
- each floor is made of two (and more normally a large number of) different panels, and intermediate beams extend across the building to act as supports for pairs of such panels with joist hangers attached to opposite faces of each intermediate beam, so as to receive and support the ends of the joists of the panel on either side thereof.
- Such beams may be the sole supports for a panel, but where walls are available to support one or more edges of a panel, one or both of the outermost joists may for example rest on the top of a wall and/or a transversely extending timber closure may be secured to the ends of the joists at one end of the panel to enclose that end and in that event it is the closure which will rest on the top of a wall.
- the beam carrying the joist hangers will itself rest on walls at each end and its depth will be selected so that the bridge sections of the joist hangers are located at the correct height to support the undersides of the joists and the upper edge of the beam will be below the underside of the decking sheet secured to the upper faces of the joists.
- the panel does not include a closure timber at both ends, there is a tendency for the panel to bend when being lifted by a crane. This can not only damage the panel but may also make it more difficult to locate the joists in their respective hangers.
- one or more elongate members may be secured between the joists near the open end of the panel, so as to resist bending of the panel.
- each elongate member extends across the panel nearer the underside of the joists than the decking sheet.
- a tie rod is fitted across the panel after forming aligned holes in the joists through which it can pass, spacers are located between adjoining joists and the tie bar is tensioned so as to clamp the spacers in place. Tensioning may be achieved by means of nuts screwed onto threads at opposite ends of the tie rod.
- the spacers may comprise tubes for example of metal or plastics material, through which the tie rod passes between the joists, the length of each tube corresponding to the spacing between the joists.
- noggins of wood or metal or plastics material may be located in the vicinity of the tie rod between the joists. They may be secured in any convenient way between the joists as by cross nailing or adhesive.
- the noggins are simply a close fit between joists, so that when the tie rod is tensioned the noggins are firmly clamped in place and serve to space the joists apart.
- noggins or spacers are a close fit between the I-beam webs, and if noggins are used, their ends will rest on the lower rails of the I-beam cross-section.
- the invention also lies in the combination of a pre-fabricated floor panel comprising a decking sheet supported by and secured to an array of parallel spaced apart joists at least part of at least one end of each of which is trapezoidal in cross section and joist hangers embodying the invention, the included angle between the diverging joist hanger cheeks being not less than that between the diverging faces of the joist ends.
- the invention also lies in a method of fitting a floor panel as aforesaid to a wall or beam in a building during construction comprising the steps of:-
- the method may also include the step of adapting at least part of at least one end of each joist which is to be received in one of those hangers, so as to have a complementary trapezoidal profile the included angle of which is substantially the same as, but not greater than, the included angle between the diverging side cheeks of the hanger.
- Fig. 1 shows how conventional joists such as 10 and conventional joist hangers such as 12 need to be precisely aligned before a floor panel such as 14 can be lowered into position, so that the ends of the joists will slide down between the parallel side cheeks 16, 18 of the conventional joist hangers. Any misalignment will prevent the placement of the floor panel, and can damage the side-cheeks of the hangers.
- Modified hangers such as shown in Fig. 2 can be used with conventional rectilinear cross-section joists such as shown at 10 in Fig. 1. However there is no lateral support for the upper region of the end of each joist 10A and therefore the cross section of at least the end of each joist 10A may be shaped so as to correspond more precisely to the shape of each joist hanger socket, as shown at 11, 13 in Fig. 2.
- joists 10A shown in Fig. 2 are of I-beam cross-section and the end shaping arrangements for such joists are described in more detail with reference to Figs. 4 and 5.
- the end shaping can be as shown in Fig. 3. This is achieved by securing two wedge-shaped members 26, 28 on opposite faces of the joist so as to form a trapezoidal cross-section when viewed end-on.
- the increased width at the widened top of the joist cross-section is made commensurate with the spacing between the upper ends of the side cheeks 22, 24 of the modified hangers 20 shown in Fig. 2.
- the lower end of the end cross-section will be substantially the same as the thickness of the joist 10, which corresponds to the spacing between the parallel socket cheeks 16, 18 of joist hangers 12 of Fig. 1
- the wedges 26, 28 may be blocks of wood, metal or plastics or rubber or composites thereof and may be solid or hollow.
- the joist has an I-beam cross-section as shown in Fig. 2 again two generally wedge-shaped members 30, 32 may be fitted, this time to opposite faces of the web 34 of the I-beam cross-section as shown in Fig. 4. As illustrated the two members 30, 32 are cut-away at their upper ends so as to accommodate the upper rail 36 of the I-beam. The lower ends of 30, 32 rest on the lower I-beam rail 38. As with Fig. 3 the wedge shaped members 30, 32 may be of wood or metal or plastics or rubber or composites thereof and may be solid or hollow.
- the wedges 26, 28 or 30, 32 may be secured in place for example by an adhesive or by nails, staples, screws or pins.
- the wedges 26, 28 or 30, 32 may extend over more of, or even all of the length of a joist, and in the simplest case the joist may have the trapezoidal cross-section over the whole of its length.
- Figs.5 and 5A show how upper and lower flanges 37, 39, 41, 43 of metal brackets 40, 42, can be fixed as by nails or screws such as 44 to the upper and lower faces of a joist, so as to produce in the end region of the joist a hollow trapezoidal shape which corresponds to that of the diverging side-cheeks 22, 24 of the modified hangers.
- Figs. 2 and 6 also show how the floor panel can be modified so as to resist bending as can occur when being lifted and lowered by a crane as indicated in Fig. 2. Referring to Fig. 6 which is to a larger scale than Fig.
- a tie rod 45 extends across the width of the panel, the rod is threaded at both ends and is secured in place by nuts and washers at each end, such 54, which may be glued or otherwise secured at their ends to the joists, but are put in compression as the tie rod 45 is tensioned by tightening nuts 46, so as to rigidly space apart the joists.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Floor Finish (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0602098.6A GB0602098D0 (en) | 2006-02-02 | 2006-02-02 | Improvements in and relating to joist hangers and pre-fabricated floor panels |
GB0606831A GB2434807B (en) | 2006-02-02 | 2006-04-05 | Improvements in or relating to joist hangers |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1816272A2 true EP1816272A2 (de) | 2007-08-08 |
EP1816272A3 EP1816272A3 (de) | 2008-07-09 |
Family
ID=37964366
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07250301A Withdrawn EP1816272A3 (de) | 2006-02-02 | 2007-01-25 | Verbesserungen bei oder in Zusammenhang mit Balkenaufhängungen und Ähnlichem |
Country Status (2)
Country | Link |
---|---|
US (1) | US20070193195A1 (de) |
EP (1) | EP1816272A3 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9663959B1 (en) * | 2016-07-20 | 2017-05-30 | Martin Eibert Keller | Scaffolding apparatus and method of use |
CN107859221B (zh) * | 2017-11-17 | 2023-09-01 | 山东枣兴建设工程有限公司 | 一种龙骨结构 |
US10822820B1 (en) | 2019-08-12 | 2020-11-03 | ACSM, Inc. | Floor panel seating assembly |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB223120A (en) * | 1924-02-22 | 1924-10-16 | Aristide Daniel | Improvements relating to the construction of moulded floors and the like |
AT181950B (de) * | 1946-12-14 | 1955-05-10 | Adolf Kirchner | Schuh für die Auflagerung der fertigen Rippen (Balken) von Stahlbetonrippen- bzw. Stahlbetonbalkendecken |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2871692A (en) * | 1956-09-24 | 1959-02-03 | Marter Clarence | Girder pocket form boxes |
US4411548A (en) * | 1981-06-08 | 1983-10-25 | P. H. Bowman Co., Inc. | Joist hanger |
US5104252A (en) * | 1991-10-31 | 1992-04-14 | Simpson Strong-Tie Company, Inc. | Hanger connection |
US5564248A (en) * | 1994-11-10 | 1996-10-15 | United Steel Products Company | Construction hanger and method of making the same |
US5836131A (en) * | 1994-12-22 | 1998-11-17 | Super Stud Building Products | Joist hanger |
US6523321B1 (en) * | 1999-08-27 | 2003-02-25 | Simpson Strong-Tie Company, Inc. | Snap-in hanger |
US6988346B2 (en) * | 2001-10-30 | 2006-01-24 | Simpson Strong-Tie Company, Inc. | Strap holding device |
US7334372B2 (en) * | 2004-10-15 | 2008-02-26 | Simpson Strong-Tie Co., Inc. | Top flange hanger with strengthening embossment |
-
2007
- 2007-01-25 EP EP07250301A patent/EP1816272A3/de not_active Withdrawn
- 2007-01-26 US US11/627,738 patent/US20070193195A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB223120A (en) * | 1924-02-22 | 1924-10-16 | Aristide Daniel | Improvements relating to the construction of moulded floors and the like |
AT181950B (de) * | 1946-12-14 | 1955-05-10 | Adolf Kirchner | Schuh für die Auflagerung der fertigen Rippen (Balken) von Stahlbetonrippen- bzw. Stahlbetonbalkendecken |
Also Published As
Publication number | Publication date |
---|---|
US20070193195A1 (en) | 2007-08-23 |
EP1816272A3 (de) | 2008-07-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5333426A (en) | Wood frame construction system with prefabricated components | |
US3875719A (en) | Metal support for wood structural elements | |
US5301486A (en) | Bracing system | |
EP2492408A1 (de) | Verbindungsstruktur für Gebäuderahmen | |
EP1413686A1 (de) | Verbindungselement für Holzträger | |
US20100242403A1 (en) | Multiple dimension beam, deck and column system | |
US6928782B2 (en) | Column hung truss system | |
MX2012005600A (es) | Refuerzo estructural. | |
JP2015506428A (ja) | モジュラ間柱ブレース | |
EP1816271A2 (de) | Verbesserungen bei oder in Zusammenhang mit Balken und Bodenplatten | |
US3917214A (en) | Flying form | |
CA2872981C (en) | Apparatus for positioning anchor bolts | |
US20090184230A1 (en) | Concrete formwork system for forming cast in place horizontal slabs | |
EP1251220A2 (de) | Verbesserungen an oder in Bezug auf Fussböden | |
EP1816272A2 (de) | Verbesserungen bei oder in Zusammenhang mit Balkenaufhängungen und Ähnlichem | |
GB2090900A (en) | Wall formwork | |
AU2011201974A1 (en) | Building Means | |
US4584815A (en) | Flange hanger | |
GB2434807A (en) | Tapered joist hanger | |
JP6892991B2 (ja) | 壁部材と基礎の接合構造 | |
CN219080675U (zh) | Alc蒸压加气混凝土墙板在钢结构中管卡焊接固定结构 | |
CN100374668C (zh) | 柱悬挂桁架系统 | |
US12065833B1 (en) | Architectural floor and roof framing system | |
US20090205282A1 (en) | Wall system | |
EP1251213A2 (de) | Zusammengesetzte Holztragstruktur für Böden |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA HR MK YU |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA HR MK RS |
|
17P | Request for examination filed |
Effective date: 20081004 |
|
17Q | First examination report despatched |
Effective date: 20090105 |
|
AKX | Designation fees paid |
Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20090516 |