EP0018187B1 - Section de tête pour une poutre de coffrage - Google Patents
Section de tête pour une poutre de coffrage Download PDFInfo
- Publication number
- EP0018187B1 EP0018187B1 EP19800301181 EP80301181A EP0018187B1 EP 0018187 B1 EP0018187 B1 EP 0018187B1 EP 19800301181 EP19800301181 EP 19800301181 EP 80301181 A EP80301181 A EP 80301181A EP 0018187 B1 EP0018187 B1 EP 0018187B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- head section
- channel
- plate
- assembly according
- abutment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
- E04G11/48—Supporting structures for shutterings or frames for floors or roofs
- E04G11/50—Girders, beams, or the like as supporting members for forms
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
- E04G11/48—Supporting structures for shutterings or frames for floors or roofs
- E04G11/486—Dropheads supporting the concrete after removal of the shuttering; Connecting means on beams specially adapted for dropheads
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
- E04G11/48—Supporting structures for shutterings or frames for floors or roofs
- E04G11/50—Girders, beams, or the like as supporting members for forms
- E04G11/54—Girders, beams, or the like as supporting members for forms of extensible type, with or without adjustable supporting shoes, fishplates, or the like
Definitions
- This invention relates to beams and head sections for use in the casting of concrete and like structures such as floors and decks.
- Formwork support arrangements to be used for such casting are well known in the art and generally comprises vertical props the tops of which are interconnected by beams for form a horizontal frame. This frame in turn supports moulds or panels on which the concrete or the like is cast.
- Various arrangements have been proposed e.g. in U.K. Patent Specifications Nos. 1 386 966 and 1 457 136 and the details of the formwork not relevant to the present invention will accordingly not be described in this specification.
- a longitudinal inverted channel-shaped head section suitable for mounting on a formwork beam to leave lateral mould- or panel-supporting ledges formed by the upper surface of the beam, the head section having internal rotatable adjustment members secured thereto at longitudinal intervals, the adjustment members serving in a first rotary position (but not in a second rotary position) to space the lower edges of the head section from the top of the beam so that the top of the head section may remain flush with the tops of the edges of the moulds or panels of differing thicknesses.
- a beam for use with formwork for the casting of concrete or the like which comprises a metal section in the form of an inverted rectangular open-topped channel, the central web of the channel having a central longitudinal indentation forming a groove on the outside of the channel and a ridge along the bottom of the inside of the channel.
- the preferred indentation shape is trapezoidal though arcuate and V-shaped indentations could, for example, be used.
- the head section according to the invention will normally cover the groove.
- Fig. 1 shows a scaffolding system consisting of standards 1, transoms 2 and ledgers 3 as described in our U.K Patent No. 1 385 878.
- the standards 1 support the formwork proper through dropheads 4.
- the dropheads 4 (see Fig. 5) comprise a plate 5 to be bolted to a similar plate on the top of a standard 1, a vertical threaded tube 6 welded thereto, a top plate 7 fixed to the top of the rod and a flanged bearing plate 8 carried by a heavy duty wing nut 9.
- the beams are carried by the bearing plate 8 as described below, the top plate 7 serving to support the partially set concrete after the beams and the moulds or panels are removed.
- the standards 1 have adjustable feet 10 for determining the verticai position of the formwork. Although the formwork is described as being horizontal it could of course be sloped to an extent depending on the material to be moulded etc.
- the main beams 12 each comprise a rolled metal section 13 of inverted open-topped rectangular shape modified by a longitudinal trapezium-shaped indentation 14 which extends centrally along the central web of the section 13. This indentation has been found to permit the construction of a strong beam of relatively light and thin material.
- the section 13 also has a channel-shaped lip 15 on each side.
- Welded into each end of the section 13 is a channel-shaped bearing member 16 having cutouts forming a downwardly facing lug 17 on its central web 18.
- the lug 17 has a further rectangular cut-out in the centre of its lower edge which engages a locating lug on the bearing plate 8. It is also desirable to weld corresponding locating lugs at intervals in the main beam channel-shaped lips 15.
- the beams 12 have bracing elements 21 to strengthen them in a manner well known in the art.
- the main beams 12 are carried at each end by the dropheads 4 and make up horizontal rectangular frames, the lugs 17 bearing on the bearing plates 8 behind the bearing plate flanges and optionally being laterally retained by the lugs referred to above.
- a metal beam head section 25 Extending centrally along at least some of the main beams 12 is a metal beam head section 25 (see Fig. 4).
- the beam head section 25 is narrower than the main beam but covers the indentation 14. Ledges formed by the upper surface of the beam 12 are therefore provided on each side of the head section 25.
- the head section 25 is formed by an inverted rectangular open-topped channel section with inturned lips 26.
- T-head bolts 27 in the indentation 14 in the beam 12 are used to secure the head section in position.
- the plates 29 have end portions 30 which can be located between the lips 26 and the beam 12 to act as adjustment shims for altering the height of the top of the head section 25.
- Infill beams 31 are placed as desired to span the rectangles or squares formed by the main beams 12.
- the beams 31 are generally similar to the main beams 12 except that they may have no indentation 14 and may have inturned lips 15.
- the lugs 17 of the infill beams 31 rest in the channel-shaped lips 15 of the main beams 12.
- head sections 25 may be placed in main beams 12 carried by other main beams 12, with suitable bridge sections 32 being provided.
- the panels or moulds Resting on the main beams 12 and infill beams 31 (if present) are the panels or moulds. These may for example be plywood decking or glass reinforced plastic waffle and trough moulds (usually 19 mm thick) or polypropylene moulds (usually with a flange depth of 25 mm).
- the head section adjuster end portions 30 are therefore conveniently 6 mm thick.
- the distance between the bearing plate 8 and the support plate 7 will also have to be changed when the head section adjusters 29 are rotated from one operative position to another.
- the plate 8 has a pair of grooved projections one of which is shown at 41. If the plate 8 is rotated through 90° (after screwing down the nut 9) these projections will be under the hollow rectangular abutment block 42 and plate 7 will be lowered. By making these projections 6 mm high the correct adjustment can be ensured.
- main beams 12 need not have a head section.
- main beams 12, with or without a head section can be used as infill beams (as shown at 40 in Fig. 1.).
- the drophead of Fig. 5 is modified in that there is no plate 5 and stem 6 is elongated with a non-threaded portion (say 250 mm) long at its lower end.
- a further wing nut similar to wing nut 9, is mounted on the stem threads.
- This arrangement permits the lower end of stem 6 to be slid into the upper end of a standard hollow vertical scaffolding pole, the vertical position of the drophead being determined by the position of the second wing nut.
- the unthreaded portion of the stem 6 serves to ensure a minimum overlap with the scaffolding pole (consistent with safety) and also holds the wing nut captive.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Claims (9)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB7912941 | 1979-04-12 | ||
GB7912941 | 1979-04-12 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0018187A2 EP0018187A2 (fr) | 1980-10-29 |
EP0018187A3 EP0018187A3 (en) | 1981-01-07 |
EP0018187B1 true EP0018187B1 (fr) | 1983-09-21 |
Family
ID=10504539
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19800301181 Expired EP0018187B1 (fr) | 1979-04-12 | 1980-04-11 | Section de tête pour une poutre de coffrage |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP0018187B1 (fr) |
JP (1) | JPS55142870A (fr) |
AU (1) | AU5743680A (fr) |
DE (1) | DE3064883D1 (fr) |
GB (1) | GB2047786B (fr) |
HK (1) | HK89587A (fr) |
IE (1) | IE49443B1 (fr) |
IN (1) | IN153642B (fr) |
NZ (1) | NZ193451A (fr) |
SG (1) | SG37086G (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5912364U (ja) * | 1982-07-14 | 1984-01-25 | 井上鉄工株式会社 | コンクリ−ト仮枠の支持梁 |
JP2532971Y2 (ja) * | 1991-06-13 | 1997-04-16 | ワイケイケイアーキテクチュラルプロダクツ株式会社 | 外装パネル体の取付構造 |
FR2683575B1 (fr) * | 1991-11-07 | 1994-01-21 | Soframat | Panneau de coffrage de dalle. |
KR100887366B1 (ko) * | 2007-02-08 | 2009-03-06 | 주식회사 협동 | 지붕슬래브 형성을 위한 거푸집 받침 장치 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1457136A (en) * | 1973-09-21 | 1976-12-01 | Mills Scaffold Co Ltd | Builders formwork |
GB2005332B (en) * | 1977-09-21 | 1982-03-24 | Rapid Metal Developments Ltd | Formword support system |
-
1980
- 1980-04-11 GB GB8012058A patent/GB2047786B/en not_active Expired
- 1980-04-11 IE IE74480A patent/IE49443B1/en unknown
- 1980-04-11 JP JP4854180A patent/JPS55142870A/ja active Pending
- 1980-04-11 EP EP19800301181 patent/EP0018187B1/fr not_active Expired
- 1980-04-11 DE DE8080301181T patent/DE3064883D1/de not_active Expired
- 1980-04-14 IN IN430/CAL/80A patent/IN153642B/en unknown
- 1980-04-14 AU AU57436/80A patent/AU5743680A/en not_active Abandoned
- 1980-04-16 NZ NZ19345180A patent/NZ193451A/xx unknown
-
1986
- 1986-04-19 SG SG37086A patent/SG37086G/en unknown
-
1987
- 1987-12-03 HK HK89587A patent/HK89587A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
EP0018187A3 (en) | 1981-01-07 |
SG37086G (en) | 1987-07-03 |
IN153642B (fr) | 1984-08-04 |
AU5743680A (en) | 1980-10-16 |
IE49443B1 (en) | 1985-10-02 |
JPS55142870A (en) | 1980-11-07 |
EP0018187A2 (fr) | 1980-10-29 |
GB2047786B (en) | 1983-04-20 |
NZ193451A (en) | 1983-02-15 |
HK89587A (en) | 1987-12-11 |
IE800744L (en) | 1980-10-12 |
GB2047786A (en) | 1980-12-03 |
DE3064883D1 (en) | 1983-10-27 |
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17P | Request for examination filed |
Effective date: 19810311 |
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