US3331179A - Reinforcing mat structure with ring spacers for use in concrete construction - Google Patents

Reinforcing mat structure with ring spacers for use in concrete construction Download PDF

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Publication number
US3331179A
US3331179A US380589A US38058964A US3331179A US 3331179 A US3331179 A US 3331179A US 380589 A US380589 A US 380589A US 38058964 A US38058964 A US 38058964A US 3331179 A US3331179 A US 3331179A
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United States
Prior art keywords
rods
spacing
reinforcing
ring
concrete
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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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US380589A
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English (en)
Inventor
Ernst Walter
Hatting Wilhelm
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Baustahlgewebe GmbH
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Baustahlgewebe GmbH
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Publication of US3331179A publication Critical patent/US3331179A/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/20—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups of material other than metal or with only additional metal parts, e.g. concrete or plastics spacers with metal binding wires
    • E04C5/203—Circular and spherical spacers
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
    • E04C5/04—Mats
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/168—Spacers connecting parts for reinforcements and spacing the reinforcements from the form
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/18—Spacers of metal or substantially of metal

Definitions

  • the present invention relates to reinforcing structures and a method of manufacturing the same, more particularly to steel mats for use in reinforced concrete constructions, such as floors, Walls and the like, consisting essentially of superposed longitudinal and cross bars of rods joined at their intersection points.
  • reinforcing structures of the foregoing type accuracy in the positioning of the steel bars or mats within the concrete formwork is highly essential, inasmuch as any error in the proper position or spacing of the bars from the Walls of the formwork is likely to alter the character and strength of the final concrete constructions after pouring of the concrete.
  • an important object of the present invention is the provision of an improved supporting or spacing element for use in connection with and/or structural embodiment in the prefabricated mats or the like reinforcing structures, to ensure accurate and positive fixation or spacing of the mats or the like structures in relation to the concrete formwork in accordance with the structural and design considerations or requirements for the particular concrete construction or work at hand.
  • a further object of the present invention is the provision of an improved spacing or supporting element of the referred to type for use in connection with concrete rod or mesh reinforcing structures which is both simple in design, economical in fabrication and use, and which will ensure a positive fixation, or spacinng of the structures, in relation to or from the concrete framework, respectively, both prior to and during the pouring of the concrete.
  • a further object of the invention is the provision of a spacing element of the type referred to, especially for use in connection with reinforcing concrete mats, by which any additional operations or work at the construction site, or after the fabrication of the reinforcing structures, are reduced to a minimum or eliminated.
  • FIG. 1 is a perspective view of a spacing element constructed in accordance With the principles of the invention, being shown in mounted position upon the rods of a mat or the like reinforcing structure;
  • FIG. 2 shows in perspective a prefabricated reinforcing mat structure fitted with a plurality of spacing or supporting elements of the invention
  • FIGS. 3 and 4 illustrate alternative improved constructions of the spacing element according to FIG. 1, suitable especially for mounting upon the completed mats, such as at the construction site;
  • FIG. 5 shows a spacing element according to the invention mounted at an intersection point of the long-tudinal and transverse bars or bods of a reinforcing mat structure.
  • the invention involves generally the provision of a spacing element of the type referred to for reinforcing mats and the like structures, consisting essentially of a toroidal or ringshaped body having a circular cross-section, the ring or toroid being adapted to be threaded upon or to encircle the rod or bar of a reinforcing mat or the like structure, to act as a spacing or supporting element therefor.
  • the spacing ring has an inner diameter which is substantially in excess of the diameter of the rod supported there-by, or in excess of the sum of the diameters if the ring encircles the intersection point of a pair of longiutdinal and transverse rods of a mat structure, respectively.
  • the spacing element may be a solid ring completely closed upon itself, or it may be slit, preferably along an oblique line or cut.
  • the ring may be slit to provide a pair of spiral parts interengaging one another.
  • the ring or rings are preferably mounted or threaded upon the rods of a mat structure during the fabrication of the latter, while in the latter cases, the rings may be mounted subsequently, such as at .the construction site, by spreading and insertion of the rods to be supported and closing by virtue of the elasticity of the material.
  • Other means to effect opening and closing of the rings for the mounting or removal of same, will readily suggest themselves to those skilled in the art.
  • the spacing rings of the invention may consist of steel or any suitable equivalent material, such as a synthetic and preferably moldable material In the former case, it is advantageous to coat the rings with a suitable rustproofing material.
  • the spacing rings may be applied by an improved method according to the invention comprising the steps of threading the rings upon the component rods or bars of one type that is, either the longitudinal or transverse bars of a that structure whichever will be in the lower position, or position adjoining the wall of the concrete formwork, in the final mounting position of the structures, whereupon the bars are connected at their intersection points by spot Welding or in any other suitable manner.
  • the rings threaded upon one type of component bars such for instance, the longitudinal bars of the mat, though in sliding relation thereto, will be retained by the adjacent coordinated component bars, that is, the crossbars in the example referred to, whereby to facilitate the transport of the mats to the construction site and mounting in the final position within the concrete framework, substantially without any additional spacing or mounting operations or positioning of separate spacing elements.
  • the adjacent coordinated component bars that is, the crossbars in the example referred to
  • the spacing rings may be constructed to enable a separate mounting upon the completed mats or the like reinforcing structure, such as for use at the construction site, to suit existing conditions and operating requirements.
  • a ring-shaped spacer is mounted or threaded upon a longitudinal bar of a reinforcing mat, that is, between two adjacent cross bars of said mat, it may be displaced Within the limits corresponding to the spacing distance between said cross bars, that is, its position may be varied or adjusted .at the construction site and adapted to any existing obstruction, such as an electric power line located within the formwork in which the mat or mats are to be mounted.
  • the spacing rings are provided at or arranged to encircle the intersection points of the longitudinal and cross rods of a mat structure, they act, aside from their main function as improved spacing and positioning means for said structure, to provide additional support for or to stabilize the positions of the intersecting points of the rods.
  • the spacing element 1 takes the form of a toroid or ring of circular cross-section.
  • the ring 1 may encircle the longitudinal rod or bar 2 of a reinforcing mat structure, whereby to fix the distance of said rod or structure from the bottom wall 3 forming part of a concrete framework.
  • the inner diameter D of the ring 1 is substantially in excess of the diameter d of the rod 2 supported thereby.
  • diameter D is at least 1.5 to 2 times the diameter d, in such a manner that rings may be readily displaced and positioned within the range of the adjacent cross-bars 5 of the mat structure, FIG. 2, of which rod 2, FIG. 1, forms a part.
  • the rings being threaded upon or suspended from the bar 2 during the transport of the prefabricated mats or structures, will assume, upon mounting of the mats in the concrete framework, an oblique or inclined position relative to said bar as shown in the drawing, in such a manner as to ensure an exact and constant spacing distance between the mats and the framework in all positions and under all circumstances.
  • the ring-shaped spacers according to the invention may be made of steel and threaded upon the lower rods of the mats or the like reinforcing structures during the fabrication of the reinforcing structures, advantageously during the welding operations for connecting the longitudinal and cross bars of the structures.
  • the spacing elements of the type according to the invention practically ensure a point-to-point contact With the concrete formwork. This has the further advantage that the rings will be adequately covered by the concrete and that there will be practically no interference with the surface of the concrete structure (wall, roof, etc.) after removal of the formwork. If desired, however, the necessary rustproofiing of the spacers may be achieved by the application of a suitable proofing material.
  • spacing elements according to the invention are primarily designed or intended for mounting upon or embodiment in prefabricated reinforcing mats or the like structures in the manner described hereinbefore, they may be modified, in accordance with an improved feature of the invention, for subsequent application to the mats or rods of any reinforcing structure, to suit any existing operating conditions or requirements. Examples of modified spacing rings of the latter type are shown by FIGS. 3 and 4 and described in the following.
  • FIG. 3 shows a ring 6 cut along an oblique separating line 7, to enable spreading of the ring portions adjoining the line or cut 7 for the mounting of the rings upon a reinforcing rod or bar in the spread position. After mounting, release of the spread ring will result in reclosing and threading of the ring upon said rod by virtue of the elasticity of the material.
  • the ring 8 shown in FIG. 4 is provided with an overlapping or spiral cut 9 extending over and beyond the entire circumference of the ring from point 10 to point 11 shown in the drawing. Again, the resultant ends of the ring may be spread for the insertion of the reinforcing rod and the ring closed by release of the spread end portions. If necessary, special tools or implements may be provided for the mounting of the rings.
  • FIG. 5 shows an alternative mounting position of the spacing rings of the invention upon .a reinforcing mat or the like structure.
  • the ring 1 encircles both the longitudinal and cross bars 2 and 5, respectively, of a mat structure at the intersection point of said bars.
  • the inner diameter of the ring should, in accordance with the invention, be in excess of the sum of the diameters of the bars or rods 2 and 5.
  • both intersecting rods are supported equally by the spacing ring, in such a manner as to make it possible to mount the mat with either of the rods 2 or 5 adjoining the wall of the concrete framework.
  • the rings in FIG. 5 provide additional support or stability of the intersecting points of the bars.
  • the spacing rings according to the present invention do not necessarily have to consist of metal, but may be of any suitable material, such as, for instance, a synthetic and easily moldable plastic having the necessary characteristics (strength, elasticity, etc.), of a suitable ceramic porcelain), or the like setting material capable of casting or molding.
  • spacing means to maintain and structure at a constant distance from the wall of the concrete formwork in which said structure is to be mounted being comprised of a plurality of ring-shaped spacing elements having a circular cross-section and being loosely threaded upon the rods of at least one of said sets, said elements having an inner diameter substantially in excess of the cross-sectional dimension of the component rods of said structure encircled thereby whereby said elements assume a fixed inclined position relative to said rods upon mounting of said mat upon said wall.
  • said elements consisting of split elastic rings, to enable mounting upon and removal from said rods by spreading of the ends of said rings.
  • said elements consisting of elastic rings slit along a cir- References Cited UNITED STATES PATENTS 1,047,655 12/1912 Koerner 52-685 1,065,321 6/1913 Thomson 52659 3,172,239 3/1965 Larkin 52677 3,191,345 6/1965 SchWachula 52689 3,252,263 5/1966 Korf 52688 FOREIGN PATENTS 722,182 12/ 1931 France.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
US380589A 1963-07-10 1964-07-06 Reinforcing mat structure with ring spacers for use in concrete construction Expired - Lifetime US3331179A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB72616A DE1273781B (de) 1963-07-10 1963-07-10 Abstandhalter fuer mattenfoermige Bewehrungen von Beton

Publications (1)

Publication Number Publication Date
US3331179A true US3331179A (en) 1967-07-18

Family

ID=6977527

Family Applications (1)

Application Number Title Priority Date Filing Date
US380589A Expired - Lifetime US3331179A (en) 1963-07-10 1964-07-06 Reinforcing mat structure with ring spacers for use in concrete construction

Country Status (9)

Country Link
US (1) US3331179A (fr)
AT (1) AT246964B (fr)
BE (1) BE650073A (fr)
CH (1) CH426177A (fr)
DE (1) DE1273781B (fr)
DK (1) DK111215B (fr)
GB (1) GB1004900A (fr)
LU (1) LU46422A1 (fr)
NL (2) NL6407425A (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5392580A (en) * 1992-05-06 1995-02-28 Baumann; Hanns U. Modular reinforcement cages for ductile concrete frame members and method of fabricating and erecting the same
US5881460A (en) * 1997-09-10 1999-03-16 Nowell, Iii; Stephen C. Method for fastening concrete reinforcement steel using deformable metal fastener clips
US5881452A (en) * 1997-09-10 1999-03-16 Nowell, Iii; Stephen C. Apparatus for applying deformable metal fastener clips to concrete reinforcement steel and the like
US6640399B2 (en) 2000-02-16 2003-11-04 Carlos M. Perez Romo Fastener clip, pliers and method of use
US20040216409A1 (en) * 2001-05-03 2004-11-04 Kevin Hewson Bricklaying device
WO2006117513A1 (fr) * 2005-04-29 2006-11-09 Kevin Hewson Element de renfort de maçonnerie
US20070107374A1 (en) * 2003-06-05 2007-05-17 Kevin Hewson Brick laying device
EP1712686A3 (fr) * 2005-04-14 2008-12-17 Thomas Dipl.-Ing. Rothfuss Elément de connection, en particulier pour treillis d'armature
US20090178356A1 (en) * 2008-01-15 2009-07-16 Baumann Hanns U Pre-cast concrete column and method of fabrication

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8710656U1 (de) * 1987-08-04 1987-11-26 Döllen, Heinz von, 5840 Schwerte Abstandhalter
FR2639055B1 (fr) * 1988-11-17 1991-02-08 Sonneville Int Clip pour l'assemblage de barres d'armature, armature ainsi assemblee, procede et produit en beton arme en comportant application

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1047655A (en) * 1912-02-19 1912-12-17 Charles A Koerner Support for concrete reinforcements.
US1065321A (en) * 1911-10-12 1913-06-17 Robert Thomson Reinforcement of columns, ferroconcrete pillars, and the like.
FR722182A (fr) * 1930-10-24 1932-03-14 Perfectionnements aux procédés de fabrication de toiles métalliques
GB452777A (en) * 1935-02-27 1936-08-27 Bendix Ltd Improvements relating to brake-operating mechanism for road-vehicles
GB518524A (en) * 1938-08-24 1940-02-29 Burnaby Green Improved positioning devices for bars and rods used for concrete reinforcement
DE876459C (de) * 1939-07-01 1953-05-15 Dyckerhoff & Widmann Ag Abstandhalter fuer Stahlbeton-Bewehrungsstaebe
US3172239A (en) * 1962-06-29 1965-03-09 Larkin Sam Spacers used on reinforcement bars in concrete construction
US3191345A (en) * 1960-02-11 1965-06-29 Ingeborg Schwachula K G Fa Spacer for building construction
US3252263A (en) * 1962-03-08 1966-05-24 Ferrotest G M B H Concrete reinforcing network and method of making the same

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB597505A (en) * 1945-10-19 1948-01-27 Ferdinand William Berry Improvements in ferro concrete reinforcements
GB462777A (en) * 1936-02-28 1937-03-16 Thomas Howard Peerless Improvements relating to the reinforcement of concrete and other cast or moulded structures
DE1846785U (de) * 1961-05-24 1962-02-15 Bjergstroem & Co A Betonabstandhalte- ring.

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1065321A (en) * 1911-10-12 1913-06-17 Robert Thomson Reinforcement of columns, ferroconcrete pillars, and the like.
US1047655A (en) * 1912-02-19 1912-12-17 Charles A Koerner Support for concrete reinforcements.
FR722182A (fr) * 1930-10-24 1932-03-14 Perfectionnements aux procédés de fabrication de toiles métalliques
GB452777A (en) * 1935-02-27 1936-08-27 Bendix Ltd Improvements relating to brake-operating mechanism for road-vehicles
GB518524A (en) * 1938-08-24 1940-02-29 Burnaby Green Improved positioning devices for bars and rods used for concrete reinforcement
DE876459C (de) * 1939-07-01 1953-05-15 Dyckerhoff & Widmann Ag Abstandhalter fuer Stahlbeton-Bewehrungsstaebe
US3191345A (en) * 1960-02-11 1965-06-29 Ingeborg Schwachula K G Fa Spacer for building construction
US3252263A (en) * 1962-03-08 1966-05-24 Ferrotest G M B H Concrete reinforcing network and method of making the same
US3172239A (en) * 1962-06-29 1965-03-09 Larkin Sam Spacers used on reinforcement bars in concrete construction

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5392580A (en) * 1992-05-06 1995-02-28 Baumann; Hanns U. Modular reinforcement cages for ductile concrete frame members and method of fabricating and erecting the same
US5881460A (en) * 1997-09-10 1999-03-16 Nowell, Iii; Stephen C. Method for fastening concrete reinforcement steel using deformable metal fastener clips
US5881452A (en) * 1997-09-10 1999-03-16 Nowell, Iii; Stephen C. Apparatus for applying deformable metal fastener clips to concrete reinforcement steel and the like
US6640399B2 (en) 2000-02-16 2003-11-04 Carlos M. Perez Romo Fastener clip, pliers and method of use
US20040216409A1 (en) * 2001-05-03 2004-11-04 Kevin Hewson Bricklaying device
US20070107374A1 (en) * 2003-06-05 2007-05-17 Kevin Hewson Brick laying device
EP1712686A3 (fr) * 2005-04-14 2008-12-17 Thomas Dipl.-Ing. Rothfuss Elément de connection, en particulier pour treillis d'armature
WO2006117513A1 (fr) * 2005-04-29 2006-11-09 Kevin Hewson Element de renfort de maçonnerie
US20090178356A1 (en) * 2008-01-15 2009-07-16 Baumann Hanns U Pre-cast concrete column and method of fabrication

Also Published As

Publication number Publication date
GB1004900A (en) 1965-09-15
NL6407425A (fr) 1965-01-11
DK111215B (da) 1968-07-01
LU46422A1 (fr) 1972-01-01
CH426177A (de) 1966-12-15
NL123348C (fr)
AT246964B (de) 1966-05-10
BE650073A (fr) 1964-11-03
DE1273781B (de) 1968-07-25

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