US3614048A - Arrangements for use in the supporting of formwork for the casting of concrete slabs - Google Patents

Arrangements for use in the supporting of formwork for the casting of concrete slabs Download PDF

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Publication number
US3614048A
US3614048A US773821A US3614048DA US3614048A US 3614048 A US3614048 A US 3614048A US 773821 A US773821 A US 773821A US 3614048D A US3614048D A US 3614048DA US 3614048 A US3614048 A US 3614048A
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United States
Prior art keywords
panel
supporting
supporting elements
form surface
heads
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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 - Lifetime
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US773821A
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English (en)
Inventor
George B A Young
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.)
Rapid Metal Developments Ltd
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Rapid Metal Developments Ltd
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    • 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
    • E04G11/38—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 for plane ceilings of concrete
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/0029—Moulds or moulding surfaces not covered by B28B7/0058 - B28B7/36 and B28B7/40 - B28B7/465, e.g. moulds assembled from several parts
    • B28B7/0032—Moulding tables or similar mainly horizontal moulding surfaces
    • 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

Definitions

  • the basic requirements of any system for use in casting concrete slabs are (a) form panels, (b) beams for supporting the form panels, and (c) props for supporting the beams.
  • an elongated beam adapted at its ends to be supported between props and having a form surface extending throughout its entire length, a plurality of panel-supporting elements independently slidably mounted on parts of the beam at spaced positions along the length thereof, locking means for supporting said panel-supporting elements in operative positions in which panels supported by sald panel-supporting elements will have their mould faces coplanar with the form surface of the beam, said locking means being releasable to permit movement of said panel-supporting elements individually to inoperative positions enabling panels supported, in use, by said panel-supporting elements to be removed after lowering thereof from the undersurface of the cast concrete slab, whilst leaving the form surface of the beam in supporting contact with the slab.
  • the invention also resides in the combination of the beam described above and props provided with beads which support the beam, in a manner such that two aligned beams can be supported at their adjacent ends by a single head with the form surfaces of said beams in coplanar relationship.
  • the heads used on the props also have form surfaces and means are provided to enable release of the beams from the heads without releasing the heads from the undersurface of the cast concrete slab.
  • FIG. 1 is a cut-away perspective view of an assembly for use in the casting of concrete slabs, the assembly comprising props, beams, and panels,
  • FIG. 2 is a side elevation of what is shown in FIG. 1,
  • FIG. 3 is an enlarged fragmentary section on line 3-3 in FIG. 2,
  • FIG. 4 is a section on line 4-4 of FIG. 3,
  • FIG. 5 is a detail of one end of one of the beams of the structure shown in FIG. 1,
  • FIG. 6 is an elevation of a head used on each of the props of the assembly shown in FIG. 1, and
  • FIG. 7 is a section on line 7-7 in FIG. 6.
  • the panels each have a mould surface 14 and a peripheral flange 15.
  • the panels 10 are of elongated rectangular form and, as shown in FIG. 1, extend longitudinally between the beams 11 which are arranged in spaced parallel relationship.
  • Each beam 11 comprises an upper inverted channel shaped member 16 the web of which provides a form surface.
  • the beam also includes a lower tension member 17 in the form of a flat metal strip the ends of which are bent up and secured to the channel 16 at the ends thereof.
  • Rod lacings 18 extend between the channel 16 and the tension member 17 and are secured thereto to make the beam rigid.
  • a plurality of square section bars 19 extending between the channel 16 and the tension member 17 at positions spaced along the length of the beam. These bars 19 extend in directions perpendicular to the web of the channel 16.
  • Each such element provides -a rectangular platform at the four comers of which there are projections 21.
  • a locking element 22 For retaining the elements 20 in operative positions there is provided on each of the bars 19 a locking element 22.
  • This locking element 22 is formed with a keyhole shaped aperture through which the associated bar 19 extends.
  • the narrower portion of this keyhole shaped aperture 23 can be engaged with transverse grooves across the bar 19 at a position such that the locking element 22 supports the panel supporting element 20 at a position such that the distance from the platform of the element 20 to the form surface of the channel 16 is equal to the width of the flange 15 of each panel.
  • the element 20 When the narrower part of the keyhole slot 23 is disengaged from the grooves in the bar the element 20 can be lowered sufficiently to allow a clearance between the platfonn of the element 22 and the free edges of the sides of the channel 16 which is greater than the width of the flange I5.
  • each end of the channel 16 is a tongue 24 in the underside of which a recess 25 is formed. These tongues coact with the heads 13 in the mounting of the beams 11.
  • the head 13 includes a flat top part 26 providing a form surface, a pair of lengths 27 of steel angle secured at one end to said top part 26 and at the other end to a mounting plate 28.
  • the mounting plate 28 is formed with a hole 29 shaped for nonrotatable engagement with lugs 30 on the prop 12.
  • the lugs 30 are used for joining the props 12 to interconnecting members 31, such joints forming the subject of British Patent No. 1,007,249.
  • the props 12 have, at their upper ends, spigots like those described in British Patent Nos. 1,006,952 and 1,127,786.
  • the spigots 32 fit between the members 27 a short piece of tube 33 is'secured to the underside of the plate 26 between the members 27 for the purpose of locating on the top end of the spigot 32.
  • the head 13 has a pair of brackets 34 secured respectively to the members 27 and these brackets 34 carry clamping screws 35 with their axes extending vertically.
  • FIGS. 1 and 2 in use, the tongues 24 on the ends of the beams 11 are clamped against the undersides of the plates 26 by means of the screws 35.
  • the arrangement is such that the form surfaces of the beams and of the plates 26 are coplanar with the panels 10 supported by the panel-supporting elements 20.
  • FIGS. 1 and 2 also show how panels can be made to project beyond the outermost props 12.
  • To this end support brackets 36 of channel shaped form can be clamped to the underside of the plate 26 by means of the screws 35, each bracket 36 having a reversed flange 37 at the free end of each of its depending limbs to engage the flanges 15 of the panels.
  • Final makeup is effected by means of plywood or similar pieces 38 supported by additional props 39.
  • Levelling of the form surface is effected by adjustment of adjustable feet on the lower ends of the props 12 and 39 where required.
  • the panels 10 can be removed for reuse elsewhere in the building under construction.
  • the panel-supporting element 20 at its four corners are lowered after knocking out the locking members 22 so that these drop to their lowered positions.
  • the selected panel can be disengaged by raising one end of the panel to clear the projections 21 and sliding the other end of the panel towards the bars 19 of the adjacent beam.
  • the edge of the panel then passes under the channel 16 of the beam and allows the first-mentioned end of the panel to become completely clear of the panel supporting elements so that it can be lowered and then removed completely from the structure.
  • the invention thus allows maximum utilization of equipment on a building site without the hazards normally to be encountered in this type of constructional method.
  • Formwork for casting concrete slab comprising the combination of a plurality of props, a plurality of heads mounted on said props respectively, each head having a form surface and means for the clamping thereto of a pair of aligned beams, a plurality of beams supported between the heads, each beam having a form surface extending throughout its entire length and coplanar with the form surfaces of the heads, a plurality of panel-supporting elements independently slidably mounted on parts of the beam at spaced positions along the length thereof, a plurality of panels supported by said panel-supporting elements and locking means for supporting said panel-supporting elements in operative positions in which the mould faces of said panels are coplanar with the form surfaces of the beams and of the heads, said locking means being releasable to permit movement of said panel-supporting elements individually to inoperative positions enabling said panels to be removed after lowering thereof from the undersurface of the cast concrete slab whilst leaving the form surface of the beam in supporting contact with the slab and the clamping means of the heads being releas
  • An elongated beam for use in the casting of concrete slabs said beam being adapted at its ends to be supported between props and having a form surface extending throughout its entire length, a plurality of bars extending perpendicularly to said form surface at spaced positions along the length of the beam, a plurality of panel-supporting elements independently slidably mounted on said bars, locking means for supporting said panel-supporting elements in operative positions in which panels supported by said panel-supporting elements will have their mould faces coplanar with the form surface of the beam, said locking means being releasable to permit movement of said panel-supporting elements individually to inoperative positions enabling panels supported, in use, by said panel-supporting elements to be removed after lowering thereof from the undersurface of the cast concrete slab, whilst leaving the form surface of the beam in supporting contact with the slab.
  • each locking plate has an aperture of keyhole-shaped configuration having a narrower portion which is engageable with a groove portion of the associated bar.
  • each panel-supporting element comprises a platform of a rectangular form and four projections at the corners of said platform.
  • said locking means being releasable to permit movement of said panel-supporting elements individually to inoperative positions enabling panels supported, in use, by said panel-supporting elements to be removed after lowering thereof from the undersurface of the cast concrete slab, whilst leaving the form surface of the beam in supporting contact with the slab, said head having a form surface alignable with the fomr surface of the beam and having means for the clamping thereto of the beam.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
US773821A 1967-11-07 1968-11-06 Arrangements for use in the supporting of formwork for the casting of concrete slabs Expired - Lifetime US3614048A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB5056767 1967-11-07
GB913568 1968-02-26

Publications (1)

Publication Number Publication Date
US3614048A true US3614048A (en) 1971-10-19

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US773821A Expired - Lifetime US3614048A (en) 1967-11-07 1968-11-06 Arrangements for use in the supporting of formwork for the casting of concrete slabs

Country Status (7)

Country Link
US (1) US3614048A (de)
BE (1) BE723481A (de)
DE (1) DE1807455A1 (de)
ES (1) ES360490A1 (de)
FR (1) FR1591692A (de)
IE (1) IE32873B1 (de)
NL (1) NL144513B (de)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3784151A (en) * 1971-04-28 1974-01-08 Kwikform Ltd Formwork for use in supporting shuttering
US3847340A (en) * 1972-02-14 1974-11-12 C Ficken Shoring fixture for poured concrete construction
US4056254A (en) * 1975-01-20 1977-11-01 Acrow (Engineers) Limited Supports or concrete formwork
US4080712A (en) * 1974-09-23 1978-03-28 Midwestern Joists, Inc. Method of erecting formwork system
US4147321A (en) * 1976-10-07 1979-04-03 C. Evans & Sons Limited Drop-head support assembly
DE4305301A1 (de) * 1993-02-20 1994-08-25 Peri Gmbh Deckenschalung
US5643487A (en) * 1995-05-08 1997-07-01 Malone; William J. Beam and prop system for supporting concrete formwork
US20060042179A1 (en) * 2004-08-05 2006-03-02 Peter Vanagan Slab formwork systems
WO2007003337A1 (de) * 2005-07-04 2007-01-11 Peri Gmbh Deckenschalungssystem
US20070200049A1 (en) * 2006-02-28 2007-08-30 Coday Jerry F Systems and Methods for Shoring Concrete
US20070200048A1 (en) * 2006-02-28 2007-08-30 Pro-Shore, Llc Systems and methods for shoring concrete
US20090212195A1 (en) * 2005-02-23 2009-08-27 Alberto Arocena Bergareche Peripheral Slab Formwork System
US8100378B1 (en) 2008-03-20 2012-01-24 Peter Casini Coupling system for vertically engaging support columns for concrete multi floor construction
US20150176293A1 (en) * 2013-01-17 2015-06-25 Rubrica Ingenieria Y Arquitectura, S.L. Movable centring for port platforms
US20190071885A1 (en) * 2017-09-06 2019-03-07 Faresin Formwork S.p.A. Support device for supporting beams of formwork for floor slabs
US10352052B2 (en) * 2016-03-24 2019-07-16 Faresin Building S.P.A. Formwork for performing horizontal castings for the provision of floors
US20190277044A1 (en) * 2018-03-12 2019-09-12 Faresin Formwork S.p.A. Support device, of the drop head type, for supporting beams of formworks for floor slabs, apparatus comprising such device and supporting beam to be associated with the device
CN113802835A (zh) * 2021-09-26 2021-12-17 四川航天建筑工程有限公司 一种装配式叠合板施工用铝模支撑系统

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3036306C2 (de) * 1980-09-26 1983-12-22 Josef 7611 Steinach Maier Ausschalhilfe für Deckenschalungen
ES2257215B1 (es) * 2005-08-01 2007-05-01 Sistemas Tecnicos De Encofrados, S.A. Viga correa para soporte de encofrados.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1907877A (en) * 1929-04-01 1933-05-09 Henry W Roos Apparatus for laying concrete floors
US3239188A (en) * 1964-03-11 1966-03-08 Kwikform Ltd Shuttering system for use in building construction
US3294357A (en) * 1963-10-16 1966-12-27 Acrow Eng Ltd Formwork for concrete
US3430910A (en) * 1967-02-06 1969-03-04 Symons Mfg Co Stringer-releasing shore assembly for a concrete slab form installation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1907877A (en) * 1929-04-01 1933-05-09 Henry W Roos Apparatus for laying concrete floors
US3294357A (en) * 1963-10-16 1966-12-27 Acrow Eng Ltd Formwork for concrete
US3239188A (en) * 1964-03-11 1966-03-08 Kwikform Ltd Shuttering system for use in building construction
US3430910A (en) * 1967-02-06 1969-03-04 Symons Mfg Co Stringer-releasing shore assembly for a concrete slab form installation

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3784151A (en) * 1971-04-28 1974-01-08 Kwikform Ltd Formwork for use in supporting shuttering
US3847340A (en) * 1972-02-14 1974-11-12 C Ficken Shoring fixture for poured concrete construction
US4080712A (en) * 1974-09-23 1978-03-28 Midwestern Joists, Inc. Method of erecting formwork system
US4056254A (en) * 1975-01-20 1977-11-01 Acrow (Engineers) Limited Supports or concrete formwork
US4147321A (en) * 1976-10-07 1979-04-03 C. Evans & Sons Limited Drop-head support assembly
DE4305301A1 (de) * 1993-02-20 1994-08-25 Peri Gmbh Deckenschalung
US5643487A (en) * 1995-05-08 1997-07-01 Malone; William J. Beam and prop system for supporting concrete formwork
US20060042179A1 (en) * 2004-08-05 2006-03-02 Peter Vanagan Slab formwork systems
US20090212195A1 (en) * 2005-02-23 2009-08-27 Alberto Arocena Bergareche Peripheral Slab Formwork System
US8308126B2 (en) * 2005-02-23 2012-11-13 Ulma C Y E, S. Coop Peripheral slab formwork system
WO2007003337A1 (de) * 2005-07-04 2007-01-11 Peri Gmbh Deckenschalungssystem
US20070200048A1 (en) * 2006-02-28 2007-08-30 Pro-Shore, Llc Systems and methods for shoring concrete
US20070200049A1 (en) * 2006-02-28 2007-08-30 Coday Jerry F Systems and Methods for Shoring Concrete
US8100378B1 (en) 2008-03-20 2012-01-24 Peter Casini Coupling system for vertically engaging support columns for concrete multi floor construction
US20150176293A1 (en) * 2013-01-17 2015-06-25 Rubrica Ingenieria Y Arquitectura, S.L. Movable centring for port platforms
US9394705B2 (en) * 2013-01-17 2016-07-19 Rúbrica Ingeniería Y Arquitectura, S.L. Movable centring for port platforms
US10352052B2 (en) * 2016-03-24 2019-07-16 Faresin Building S.P.A. Formwork for performing horizontal castings for the provision of floors
US20190071885A1 (en) * 2017-09-06 2019-03-07 Faresin Formwork S.p.A. Support device for supporting beams of formwork for floor slabs
US10711471B2 (en) * 2017-09-06 2020-07-14 Faresin Formwork S.p.A. Support device for supporting beams of formwork for floor slabs
US20190277044A1 (en) * 2018-03-12 2019-09-12 Faresin Formwork S.p.A. Support device, of the drop head type, for supporting beams of formworks for floor slabs, apparatus comprising such device and supporting beam to be associated with the device
US10883283B2 (en) * 2018-03-12 2021-01-05 Faresin Formwork S.p.A. Support device, of the drop head type, for supporting beams of formworks for floor slabs, apparatus comprising such device and supporting beam to be associated with the device
CN113802835A (zh) * 2021-09-26 2021-12-17 四川航天建筑工程有限公司 一种装配式叠合板施工用铝模支撑系统

Also Published As

Publication number Publication date
ES360490A1 (es) 1970-10-16
DE1807455A1 (de) 1969-10-16
IE32873B1 (en) 1974-01-09
NL144513B (nl) 1975-01-15
NL6815832A (de) 1969-05-09
BE723481A (de) 1969-04-16
FR1591692A (de) 1970-05-04
IE32873L (en) 1969-05-07

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