US20140259992A1 - High-Strength Rectangular Wire Veneer Tie and Anchoring Systems Utilizing the Same - Google Patents
High-Strength Rectangular Wire Veneer Tie and Anchoring Systems Utilizing the Same Download PDFInfo
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- US20140259992A1 US20140259992A1 US13/796,754 US201313796754A US2014259992A1 US 20140259992 A1 US20140259992 A1 US 20140259992A1 US 201313796754 A US201313796754 A US 201313796754A US 2014259992 A1 US2014259992 A1 US 2014259992A1
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- 238000003780 insertion Methods 0.000 claims abstract description 60
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Classifications
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- 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
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4178—Masonry wall ties
-
- 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
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
Definitions
- This invention relates to an improved anchoring arrangement for use in conjunction with cavity walls having an inner wythe and an outer wythe. More particularly, the invention relates to construction accessory devices, namely, veneer ties with high-strength rectangular wire veneer ties.
- the veneer ties are for emplacement in the outer wythe and are further accommodated by receptors in the cavity, which receptors extend from the inner wythe to capture the specially configured pintles hereof.
- the invention is applicable to structures having an outer wythe of brick or stone facing in combination with an inner wythe of either masonry block or dry wall construction.
- the high-strength pintle hereof has been combined with the swaged back leg as shown in the inventor's patent, U.S. Pat. No. 7,325,366.
- the combination item reduces the number of “bits and pieces” brought to the job site and simplifies installation.
- This Code sets forth insulation R-values well in excess of prior editions and evokes an engineering response opting for thicker insulation and correspondingly larger cavities.
- the use of the novel rectangular wire veneer tie of the present invention provides a greater volumetric occupancy ratio within the same 3 ⁇ 8-inch bed joint than a corresponding round wire veneer tie. Further, the rectangular veneer tie provides a locking fit within the rounded anchor interconnection location.
- wire formatives in cavity wall construction have been limited by the mortar layer thicknesses which, in turn are dictated either by the new building specifications or by pre-existing conditions, e.g., matching during renovations or additions the existing mortar layer thickness. While arguments have been made for increasing the number of the fine-wire anchors per unit area of the facing layer, architects and architectural engineers have favored wire formative anchors of sturdier wire. On the other hand, contractors find that heavy wire anchors, with diameters approaching the mortar layer height specification, frequently result in misalignment. Thus, these contractors look towards substituting thinner gage wire formatives which result in easier alignment of courses of block to protect against wythe separation. A balancing of mortar and wire formatives needs to be struck to ensure veneer tie stability within the outer wythe. The present high strength veneer tie greatly assists in maintaining this balance in the mortar joint.
- these devices are generally descriptive of wire-to-wire anchors and wall ties and have various cooperative functional relationships with straight wire runs embedded in the interior and/or exterior wythe.
- U.S. Pat. No. 3,377,764 Storch—Issued Apr. 16, 1968 Discloses a bent wire, tie-type anchor for embedment in a facing exterior wythe engaging with a loop attached to a straight wire run in a backup interior wythe.
- U.S. Pat. No. 4,021,990—Schwalberg—Issued May 10, 1977 Discloses a dry wall construction system for anchoring a facing veneer to wallboard/metal stud construction with a pronged sheetmetal anchor. Like Storch '764, the wall tie is embedded in the exterior wythe and is not attached to a straight wire run.
- U.S. Pat. No. 4,373,314 Allan—Issued Feb. 15, 1983 Discloses a vertical angle iron with one leg adapted for attachment to a stud; and the other having elongated slots to accommodate wall ties. Insulation is applied between projecting vertical legs of adjacent angle irons with slots being spaced away from the stud to avoid the insulation.
- U.S. Pat. No. 4,598,518 Hohmann—Issued Jul. 8, 1986 Discloses a dry wall construction system with wallboard attached to the face of studs which, in turn, are attached to an inner masonry wythe. Insulation is disposed between the webs of adjacent studs.
- U.S. Pat. No. 4,869,038 Catani—Issued Sep. 26, 1989 Discloses a veneer wall anchor system having in the interior wythe a truss-type anchor, similar to Hala et al. '226 supra, but with horizontal sheetmetal extensions. The extensions are interlocked with bent wire pintle-type wall ties that are embedded within the exterior wythe.
- Wall tie is distinguished over that of Schwalberg '990 and is clipped onto a straight wire run.
- the device has a focus on allowing in-plane movement of a veneer.
- Several components of the system are ductile, allowing the ability to flex back and forth in a bending manner.
- U.S. Pat. No. 5,454,200 Hohmann—Issued Oct. 3, 1995 Discloses a facing anchor with straight wire run and mounted along the exterior wythe to receive the open end of wire wall tie with each leg thereof being placed adjacent one side of reinforcement wire.
- eye wires hereof have scaled eyelets or loops and the open ends of the wall ties are sealed in the joints of the exterior wythes, a positive interengagement results.
- U.S. Pat. No. 6,668,505 Hohmann et al.—Issued Dec. 30, 2003 Discloses high-span and high-strength anchors and reinforcement devices for cavity walls combined with interlocking veneer ties are described which utilize reinforcing wire and wire formatives to form facing anchors, truss or ladder reinforcements, and wall anchors providing wire-to-wire connections therebetween.
- U.S. Pat. No. 6,789,365—Hohmann et al.—Issued Sep. 14, 2004 Discloses side-welded anchor and reinforcement devices for a cavity wall. The devices are combined with interlocking veneer anchors, and with reinforcements to form unique anchoring systems. The components of each system are structured from reinforcing wire and wire formatives.
- U.S. Pat. No. 6,851,239 Hohmann et al.—Issued Feb. 8, 2005
- the various embodiments combine wire formatives which are compressively reduced in height by the cold-working thereof.
- a veneer anchoring system with a low-profile wall tie for use in a heavily insulated wall.
- None of the above anchors or anchoring systems provide a veneer tie having a high-strength rectangular veneer tie for fulfilling the need for enhanced compressive and tensile properties and high-strength interconnection.
- This invention relates to an improved anchoring arrangement for use in conjunction with cavity walls having an inner wythe and an outer wythe and meets the heretofore unmet needs described above.
- one embodiment of the invention is a high-strength pintle veneer tie and an anchoring system utilizing the same for cavity walls having an inner and outer wythe.
- the system includes a rectangular wire-formative veneer tie for emplacement in the outer wythe.
- the high-strength construction system hereof is applicable to construction of a wall having an inner wythe which, can either be of dry wall construction or masonry block, and an outer wythe, as well as, to insulated and non-insulated structures and high-span construction.
- the wythes are in a spaced apart relationship and form a cavity therebetween.
- a unique combination of a wall anchor (attachable to either ladder- or truss-type reinforcement for masonry inner wythes or to metal studs of a dry wall construct or directly to a masonry inner wythe), a wire veneer tie, and, optionally, a continuous wire reinforcement is provided.
- the invention contemplates that the veneer ties are wire formatives with a rectangular cross-section with high-strength pintles depending into the wall cavity for connections between the veneer tie and the wall anchor.
- the veneer tie is formed from a rectangular wire formative and interconnected within the apertures of the wall anchor.
- the interconnection restricts movement in the x- and z-axes and maintains a high-strength connection.
- An alternative design veneer tie has a square cross-section which provides greater volumetric occupancy than a traditional circular wire.
- the square wire pintles are optionally compressed to increase the tensile and compressive strength of the wire.
- the veneer tie is positioned so that the insertion end thereof is embedded in the bed joint of the outer wythe.
- the construction of the veneer tie results in an orientation upon emplacement so that the widest part of the pintle is subjected to compressive and tensile forces.
- the insertion end of the veneer tie is optionally compressed to provide a high strength connection within the bed joint and is positioned on the outer wythe so that a continuous reinforcement wire can be snapped into and secured to the outer wythe.
- the snap-in feature of the anchor here replaces the traditional function of the seismic clip for accommodating a straight wire run (see U.S. Pat. No. 4,875,319) and receiving the open end of the box tie.
- the veneer tie after being inserted into the receptors therefor, pintles are oriented so that the widest portion thereof is subjected to compressive to tensile forces.
- the veneer ties are utilizable with either a masonry block having aligned or unaligned bed joints and for a dry wall construct that secures to a metal stud.
- FIG. 1 is a perspective view of a first embodiment of an anchoring system having a high-strength rectangular veneer tie of this invention and side-welded, wall anchor and shows a wall with an inner wythe of masonry block and an outer wythe of brick veneer;
- FIG. 2 is a perspective view of the veneer tie and anchor of FIG. 1 showing details of the wall anchor and the rectangular veneer tie;
- FIG. 3 is a partial cross-sectional view of the anchoring system of FIG. 2 on a substantially vertical plane showing the receptor portion of the wall anchor and the pintle of the veneer tie;
- FIG. 4 is a partial cross-sectional view of the anchoring system of FIG. 2 on a substantially horizontal plane showing the receptor portion of the wall anchor and the pintle of the veneer tie;
- FIG. 5 is a perspective view of a second embodiment of an anchoring system having a veneer tie with high-strength rectangular pintles of this invention, wherein the building system therefor includes a sheetmetal anchor for a drywall inner wythe;
- FIG. 6 is a perspective view of the anchor and veneer ties of FIG. 5 showing the details of the rectangular veneer tie and anchor;
- FIG. 7 is a perspective view of the veneer tie of FIG. 5 set within an alternative design anchor and having the interconnecting portions compressively reduced;
- FIG. 8 is a perspective view of a third embodiment of an anchoring system having a veneer tie with high-strength rectangular pintles of this invention and a side-welded, wall anchor and shows a wall with a high-span cavity to accommodate increased insulation with a compressed veneer tie insertion portion and a reinforcement wire set therewithin; and,
- FIG. 9 is a cross-sectional view of a circular wire formative veneer tie and a rectangular wire formative veneer tie having the same diameter and sets forth the respective volumetric occupancy rates.
- the veneer ties are formed from high-strength rectangular wire formatives which provide a greater volumetric occupancy ratio within the same 3 ⁇ 8-inch bed joint than a than that of a corresponding traditional cylindrical wire formative.
- the use of a rectangular wire provides a locking fit within the rounded anchor interconnection area.
- the use of a rectangular wire within the circular enclosure restricts movement along the x- and z-axes.
- each wythe of the cavity wall structure is designed to resist individually the effects of the loads imposed thereupon.
- the veneer (outer wythe) is designed and detailed to accommodate differential movement and to distribute all external applied loads through the veneer to the inner wythe utilizing masonry anchors and ties.
- the description which follows is of three embodiments of anchoring systems utilizing the pintle veneer tie devices of this invention, which devices are suitable for nonseismic and seismic cavity wall applications. Two of the embodiments apply to cavity walls with masonry block inner wythes, and the remaining embodiment to a cavity wall with a dry wall (sheetrock) inner wythe.
- the wall anchor of the first embodiment is adapted from that shown in U.S. Pat. No. 6,789,365 of the inventors hereof.
- a wall structure 12 is shown having a backup wall or inner wythe 14 of masonry blocks 16 and a veneer facing or outer wythe 18 of facing brick or stone 20 .
- a cavity 22 is formed, which cavity 22 extends outwardly from surface 24 of backup wall 14 and optionally contains insulation 23 .
- successive bed joints 26 and 28 are formed between courses of blocks 16 and the joints are substantially planar and horizontally disposed.
- successive bed joints 30 and 32 are formed between courses of facing brick 20 and the joints are substantially planar and horizontally disposed.
- the bed joints 26 , 28 , 30 and 32 are specified as to the height or thickness of the mortar layer and such thickness specification is rigorously adhered to so as to provide the uniformity inherent in quality construction.
- Selected bed joint 26 and bed joint 30 are constructed to align, that is to be substantially coplanar, the one with the other.
- the device 10 includes a wall anchor 40 constructed for embedment in bed joint 26 , which, in turn, includes a free end with one or more receptor portions 58 having two legs or traverse wire member 54 extending into cavity 22 . Further, the device 10 includes a wire formative veneer tie or anchor 44 for embedment in bed joint 30 .
- the wall anchor 40 is shown in FIG. 1 as being emplaced on a course of blocks 16 in preparation for embedment in the mortar of bed joint 26 .
- a truss-type wall reinforcement wire portion 46 is constructed of a wire formative with two parallel continuous straight wire members 48 and 50 spaced so as, upon installation, to each be centered along the outer walls of the masonry blocks 16 .
- Intermediate wire bodies or cross rods 52 are interposed therebetween and connect wire members 48 and 50 forming the truss structure 46 .
- a ladder-type wall reinforcement as shown in FIG. 8 is applicable to the present invention.
- the eye or aperture 60 of receptor portion 58 is constructed to be within a substantially horizontal plane normal to exterior surface 24 .
- the aperture 60 is dimensioned to accept a pintle of the veneer tie or anchor 44 therethrough and has a slightly larger opening than that required to accommodate the pintle. This relationship minimizes the movement of the construct in along a z-vector and in an xz-plane.
- the aperture 60 of receptor portion 58 is sealed forming a closed loop.
- a single eyelet 259 with a substantially oval opening 261 is used. The single eyelet 259 is welded closed.
- the veneer tie 44 is, when viewed from a top or bottom elevation, generally U-shaped and is dimensioned to be accommodated by the pair of eye wires 58 or a single eyelet 259 previously described.
- the tie 44 is a wire formative with a substantially rectangular cross-section and has two interengaging end portions or pintles 62 and 64 , two side cavity portions 66 and 68 , and an insertion end portion 70 .
- the rectangular pintles 62 when viewed as installed, have a cross-section taking in a horizontal or an xz-plane that includes the longitudinal axis of the receptor 58 and shows the greatest dimension 61 substantially oriented along a z-vector.
- the pintle cross-section taking in a vertical plane that includes the longitudinal axis of the wire member 54 shows the major axis dimension 61 substantially oriented along a z-vector.
- the veneer tie insertion portion is optionally compressively reduced as shown in FIG. 8 .
- the tie 244 has an insertion portion 270 that is compressibly deformed and has a pattern 247 of recessed areas or corrugations 257 impressed thereon for receiving mortar within the recessed areas 257 .
- the insertion portion 270 is configured to maximize surface contact with the mortar in the bed joint 30 .
- the insertion portion 270 of the veneer tie 244 is a wire formative formed from a wire having a diameter substantially equal to the predetermined height of the mortar joint.
- the insertion portion 270 Upon compressible reduction in height, the insertion portion 270 is mounted upon the exterior wythe and positioned to receive mortar thereabout.
- the insertion portion 270 retains the mass and substantially the tensile strength as prior to deformation.
- the vertical height of the insertion portion 270 is reduced so that, upon installation, mortar of bed joint 30 flows around the insertion portion 270 .
- a pattern or corrugation 257 is impressed on insertion portion 270 and, upon the mortar of bed joint 30 flowing around the insertion portion 270 , the mortar flows into the corrugation 257 .
- the corrugations 257 are, upon installation, substantially parallel to x-axis 34 .
- the pattern 247 is shown impressed on only one side thereof; however, it is within the contemplation of this disclosure that corrugations or other patterning could be impressed on other surfaces of the insertion portion 270 .
- Other patterns such as a waffle-like, cellular structure and similar structures optionally replace the corrugations.
- the second embodiment of the high-strength anchoring system is shown and is referred to generally by the numeral 110 .
- the system 110 employs a sheetmetal wall anchor 140 .
- the dry wall structure 112 is shown having an interior wythe 114 with wallboard 116 as the interior and exterior facings thereof.
- An exterior or outer wythe 118 of facing brick 120 is attached to dry wall structure 112 and a cavity 122 is formed therebetween.
- the dry wall structure 112 is constructed to include, besides the wallboard facings 116 , vertical channels 124 with insulation layers 126 disposed between adjacent channel members 124 .
- Selected bed joints 128 and 130 are constructed to be in cooperative functional relationship with the veneer tie described in more detail below.
- the exterior surface 125 of the interior wythe 114 contains a horizontal line or x-axis 134 and an intersecting vertical line or y-axis 136 .
- a horizontal line or z-axis 138 also passes through the coordinate origin formed by the intersecting x- and y-axes.
- the system 110 includes a dry wall anchor 140 constructed for attachment to vertical channel members 124 , for embedment in joint 130 and for interconnecting with the veneer tie 144 .
- the projecting or extending portion(s) 148 is contiguous with the base plate member 146 so as to have, upon installation, a horizontally disposed elongated aperture 150 which provides for wire-tie-receiving receptors 151 .
- the aperture 150 is formed in plate member 146 .
- the projecting portion 148 is thus disposed substantially at right angles with respect to the plate member 146 .
- receptors 151 may be slightly elongated along the x-axis thereof.
- the plate member 146 is also provided with mounting holes 156 at the upper and lower ends thereof.
- the interengaging end portions 162 , 164 are dimensioned to be secured within the aperture(s) 150 , 151 .
- the projecting portion 148 is spaced from the plate member 146 and adapted to receive the interengaging end portions 162 , 164 of veneer tie 144 therewithin.
- the channel members 124 are initially secured in place.
- the channel members 124 may also comprise the standard framing member of a building.
- Sheets of exterior wallboard 116 which may be of an exterior grade gypsum board, are positioned in abutting relationship with the forward flange of the channel member 124 .
- the insulating layer 126 is shown as panels dimensioned for use between adjacent column 124 , it is to be noted that any similarly suited rigid or flexible insulating material may be used herein with substantially equal efficacy.
- the veneer anchors 140 are secured to the surface of the wallboard 116 in front of channel members 124 . Thereafter, sheetmetal screws 127 are inserted into the mounting holes 156 to fasten the anchor 140 to the channel member 124 .
- a veneer tie 144 with a substantially square cross-section provides, as shown in FIG. 9 , a 27% higher volumetric occupancy rate than that of a round wire having the same diameter, thereby providing a stronger interconnection with the outer wythe 118 .
- the pintles 162 , 164 when compressed and viewed as installed have a cross-section taking in a horizontal or an xz-plane that includes the longitudinal axis of the receptor and shows the greatest dimension substantially oriented along a z-vector.
- the veneer tie insertion portion is optionally compressively reduced as shown in FIG. 8 .
- the tie has an insertion portion 270 that is compressibly deformed and has a pattern 247 of recessed areas or corrugations 257 impressed thereon for receiving mortar within the recessed areas 257 .
- the insertion portion 270 is configured to maximize surface contact with the mortar in the bed joint 30 .
- the insertion portion 270 of the veneer tie 244 is a wire formative formed from a wire having a diameter substantially equal to the predetermined height of the mortar joint.
- the insertion portion 270 Upon compressible reduction in height, the insertion portion 270 is mounted upon the exterior wythe and positioned to receive mortar thereabout.
- the insertion portion 270 retains the mass and substantially the tensile strength as prior to deformation.
- the vertical height of the insertion portion 270 is reduced so that, upon installation, mortar of bed joint 130 flows around the insertion portion 270 .
- a pattern or corrugation 257 is impressed on insertion portion 270 and, upon the mortar of bed joint 130 flowing around the insertion portion 270 , the mortar flows into the corrugation 257 .
- the corrugations 257 are, upon installation, substantially parallel to the x-axis 134 .
- the pattern 247 is shown impressed on only one side thereof; however, it is within the contemplation of this disclosure that corrugations or other patterning could be impressed on other surfaces of the insertion portion 270 .
- Other patterns such as a waffle-like, cellular structure and similar structures optionally replace the corrugations.
- the wall anchor portion is adapted from the high-span anchor and wall reinforcement device of U.S. Pat. No. 6,668,505 to Hohmann, et al.
- the veneer tie 244 of the third embodiment is analogous to the veneer tie 44 of the first embodiment.
- FIGS. 8 and 9 the third embodiment of a high-strength pintle anchoring system of this invention is shown and is referred to generally by the numerals 240 for the wall anchor, 244 for the veneer tie, and 246 for the backup wall reinforcement.
- the wall structure is partially shown, but the wall structure of FIG. 1 is incorporated herein by reference.
- the backup wall is insulated with strips of insulation 223 attached to the cavity surface of the backup wall and has seams 225 between adjacent strips coplanar with adjacent bed joints.
- the cavity 222 is larger-than-normal and has a 5-inch span.
- the wall anchor 240 is shown in FIG. 8 and has a free end or extension 242 that spans the insulation and cavity for interconnection with veneer tie 244 .
- a ladder-type wall reinforcement 246 is constructed of a wire formative with two parallel continuous straight side wire members 248 and 250 spaced so as, upon installation, to each be centered along the outer walls of the masonry blocks.
- An intermediate wire body 252 is interposed therebetween and is butt welded to wire members 248 and 250 , or electric resistance welded in accord with ASTM Standard Specification A951.
- a wall anchor 240 is fusibly attached at an attachment end 245 to the wall reinforcement 248 .
- the wall reinforcement 248 has an upper surface in one plane and a lower surface in a plane substantially parallel thereto.
- the wall anchor 240 extends between the plane of the upper surface and the plane of the lower surface from an attachment end 245 , which is fusibly attached, to the vertical surface of the backup wall.
- Pairs of wire members or extended leg portions 254 extend into the cavity 222 and have a free end 249 opposite the attachment end 245 and receptor portions 259 (single as shown in FIG. 8 or in the alternative two receptor portions 58 as shown in FIG. 2 ) contiguous therewith. The spacing therebetween limits the x-axis movement of the construct.
- Each receptor portion 259 has an eyelet or receptor opening 261 formed continuous therewith. Upon installation, the receptor opening 261 is constructed to be within a substantially horizontal or xz-plane, which is normal to the cavity walls. The receptor portion 259 is horizontally aligned to accept the interengaging end portion 262 , 264 of veneer tie 244 threaded therethrough.
- the receptor openings 261 are slightly greater than the width or major axis of the interengaging end portion 262 , 264 and the interengaging end portion fits snugly therewithin. These dimensional relationships minimize the x- and z-axis movement of the construct.
- the veneer tie 244 is, when viewed from a top or bottom elevation, generally U-shaped and is dimensioned to be accommodated by the pair of eyelets 58 or a single eyelet 259 previously described.
- the tie 244 is wire formative with a substantially rectangular cross-section and has two interengaging end portions or pintles 262 and 264 , two side cavity portions 266 and 268 , and an insertion end portion 270 .
- the veneer tie insertion portion is optionally compressively reduced as shown in FIG. 8 .
- the tie has an insertion portion 270 that is compressibly deformed and has a pattern 247 of recessed areas or corrugations 257 impressed thereon for receiving mortar within the recessed areas 257 .
- the insertion portion 270 is configured to maximize surface contact with the mortar in the bed joint 230 .
- the insertion portion 270 of the veneer tie 244 is a wire formative formed from a wire having a diameter substantially equal to the predetermined height of the mortar joint.
- the insertion portion 270 Upon compressible reduction in height, the insertion portion 270 is mounted upon the exterior wythe and positioned to receive mortar thereabout.
- the insertion portion 270 retains the mass and substantially the tensile strength as prior to deformation.
- the vertical height of the insertion portion 270 is reduced so that, upon installation, mortar of bed joint 230 flows around the insertion portion 270 .
- a pattern or corrugation 257 is impressed on insertion portion 270 and, upon the mortar of bed joint 230 flowing around the insertion portion 270 , the mortar flows into the corrugation 257 .
- the corrugations 257 are, upon installation, substantially parallel to x-axis 234 .
- the pattern 247 is shown impressed on only one side thereof; however, it is within the contemplation of this disclosure that corrugations or other patterning could be impressed on other surfaces of the insertion portion 270 .
- Other patterns such as a waffle-like, cellular structure and similar structures optionally replace the corrugations.
- the insertion portion 270 is optionally configured (as shown in FIG. 8 ) to accommodate therewithin a reinforcement wire or straight wire member 271 of predetermined diameter.
- the insertion portion 270 has a compression 273 dimensioned to interlock with the reinforcement wire 271 . With this configuration, the bed joint height specification is readily maintained and the reinforcing wire 271 interlocks with the veneer tie 244 within the 0.300-inch tolerance, thereby forming a seismic construct.
Abstract
Description
- 1. Field of the Invention
- This invention relates to an improved anchoring arrangement for use in conjunction with cavity walls having an inner wythe and an outer wythe. More particularly, the invention relates to construction accessory devices, namely, veneer ties with high-strength rectangular wire veneer ties. The veneer ties are for emplacement in the outer wythe and are further accommodated by receptors in the cavity, which receptors extend from the inner wythe to capture the specially configured pintles hereof. The invention is applicable to structures having an outer wythe of brick or stone facing in combination with an inner wythe of either masonry block or dry wall construction.
- 2. Description of the Prior Art
- In the past, investigations relating to the effects of various forces, particularly lateral forces, upon brick veneer masonry construction demonstrated the advantages of having high-strength wire anchoring components embedded in the bed joints of anchored veneer walls, such as facing brick or stone veneer.
- Prior tests have shown that failure of anchoring systems frequently occur at the juncture between the pintle of the veneer tie and the receptor portion of the wall anchor. This invention addresses the need for a high-strength pintle suitable for use with both a masonry block and dry wall construction and provides a strong pintle-to-receptor connection.
- Early in the development of high-strength anchoring systems a prior patent, namely U.S. Pat. No. 4,875,319 ('319), to Ronald P. Hohmann, in which a molded plastic clip is described that ties together reinforcing wire and a veneer tie. The assignee of '319, Hohmann & Barnard, Inc., now a MiTek-Berkshire Hathaway company, successfully commercialized the device under the SeismiClip trademark. For many years the white plastic clip tying together the veneer anchor and the reinforcement wire in the outer wythe has been a familiar item in commercial seismic-zone buildings.
- Additionally, the high-strength pintle hereof has been combined with the swaged back leg as shown in the inventor's patent, U.S. Pat. No. 7,325,366. The combination item reduces the number of “bits and pieces” brought to the job site and simplifies installation.
- Recently, there have been significant shifts in public sector building specifications which have resulted in architects and architectural engineers requiring larger and larger cavities in the exterior cavity walls of public buildings. These requirements are imposed without corresponding decreases in wind shear and seismic resistance levels or increases in mortar bed joint height. Thus, the wall anchors needed are restricted to occupying the same ⅜-inch bed joint height in the inner and outer wythes. Thus, the veneer facing material is tied down over a span of two or more times that which had previously been experienced. Exemplary of the public sector building specification is that of the Energy Code Requirement, Boston, Mass. (See Chapter 13 of 780 CMR, Seventh Edition). This Code sets forth insulation R-values well in excess of prior editions and evokes an engineering response opting for thicker insulation and correspondingly larger cavities. The use of the novel rectangular wire veneer tie of the present invention provides a greater volumetric occupancy ratio within the same ⅜-inch bed joint than a corresponding round wire veneer tie. Further, the rectangular veneer tie provides a locking fit within the rounded anchor interconnection location.
- The use of wire formatives in cavity wall construction have been limited by the mortar layer thicknesses which, in turn are dictated either by the new building specifications or by pre-existing conditions, e.g., matching during renovations or additions the existing mortar layer thickness. While arguments have been made for increasing the number of the fine-wire anchors per unit area of the facing layer, architects and architectural engineers have favored wire formative anchors of sturdier wire. On the other hand, contractors find that heavy wire anchors, with diameters approaching the mortar layer height specification, frequently result in misalignment. Thus, these contractors look towards substituting thinner gage wire formatives which result in easier alignment of courses of block to protect against wythe separation. A balancing of mortar and wire formatives needs to be struck to ensure veneer tie stability within the outer wythe. The present high strength veneer tie greatly assists in maintaining this balance in the mortar joint.
- The following patents are believed to be relevant and are disclosed as being known to the inventor hereof:
-
U. S. Pat. No. Inventor Issue Date 3,377,764 Storch Apr. 16, 1968 4,021,990 Schwalberg May 10, 1977 4,373,314 Allan Feb. 15, 1983 4,473,984 Lopez Oct. 2, 1984 4,598,518 Hohmann Jul. 8, 1986 4,869,038 Catani Sep. 26, 1989 4,875,319 Hohmann Oct. 24, 1989 5,035,099 Lapish Jul. 30, 1991 5,454,200 Hohmann Oct. 3, 1995 6,668,505 Hohmann et al. Dec. 30, 2003 6,789,365 Hohmann et al. Sep. 14, 2004 6,851,239 Hohmann et al. Feb. 8, 2005 7,017,318 Hohmann et al. Mar. 28, 2006 7,325,366 Hohmann, Jr. et al. Feb. 5, 2008 - It is noted that these devices are generally descriptive of wire-to-wire anchors and wall ties and have various cooperative functional relationships with straight wire runs embedded in the interior and/or exterior wythe.
- U.S. Pat. No. 3,377,764—Storch—Issued Apr. 16, 1968 Discloses a bent wire, tie-type anchor for embedment in a facing exterior wythe engaging with a loop attached to a straight wire run in a backup interior wythe.
- U.S. Pat. No. 4,021,990—Schwalberg—Issued May 10, 1977 Discloses a dry wall construction system for anchoring a facing veneer to wallboard/metal stud construction with a pronged sheetmetal anchor. Like Storch '764, the wall tie is embedded in the exterior wythe and is not attached to a straight wire run.
- U.S. Pat. No. 4,373,314—Allan—Issued Feb. 15, 1983 Discloses a vertical angle iron with one leg adapted for attachment to a stud; and the other having elongated slots to accommodate wall ties. Insulation is applied between projecting vertical legs of adjacent angle irons with slots being spaced away from the stud to avoid the insulation.
- U.S. Pat. No. 4,473,984—Lopez—Issued Oct. 2, 1984 Discloses a curtain-wall masonry anchor system wherein a wall tie is attached to the inner wythe by a self-tapping screw to a metal stud and to the outer wythe by embedment in a corresponding bed joint. The stud is applied through a hole cut into the insulation.
- U.S. Pat. No. 4,598,518—Hohmann—Issued Jul. 8, 1986 Discloses a dry wall construction system with wallboard attached to the face of studs which, in turn, are attached to an inner masonry wythe. Insulation is disposed between the webs of adjacent studs.
- U.S. Pat. No. 4,869,038—Catani—Issued Sep. 26, 1989 Discloses a veneer wall anchor system having in the interior wythe a truss-type anchor, similar to Hala et al. '226 supra, but with horizontal sheetmetal extensions. The extensions are interlocked with bent wire pintle-type wall ties that are embedded within the exterior wythe.
- U.S. Pat. No. 4,875,319—Hohmann—Issued Oct. 24, 1989 Discloses a seismic construction system for anchoring a facing veneer to wallboard/metal stud construction with a pronged sheetmetal anchor. Wall tie is distinguished over that of Schwalberg '990 and is clipped onto a straight wire run.
- U.S. Pat. No. 5,035,099—Lapish—Issued Jul. 30, 1991 Discloses a multi-part wall tie connector for use with cavity walls. The device has a focus on allowing in-plane movement of a veneer. Several components of the system are ductile, allowing the ability to flex back and forth in a bending manner.
- U.S. Pat. No. 5,454,200—Hohmann—Issued Oct. 3, 1995 Discloses a facing anchor with straight wire run and mounted along the exterior wythe to receive the open end of wire wall tie with each leg thereof being placed adjacent one side of reinforcement wire. As the eye wires hereof have scaled eyelets or loops and the open ends of the wall ties are sealed in the joints of the exterior wythes, a positive interengagement results.
- U.S. Pat. No. 6,668,505—Hohmann et al.—Issued Dec. 30, 2003 Discloses high-span and high-strength anchors and reinforcement devices for cavity walls combined with interlocking veneer ties are described which utilize reinforcing wire and wire formatives to form facing anchors, truss or ladder reinforcements, and wall anchors providing wire-to-wire connections therebetween.
- U.S. Pat. No. 6,789,365—Hohmann et al.—Issued Sep. 14, 2004 Discloses side-welded anchor and reinforcement devices for a cavity wall. The devices are combined with interlocking veneer anchors, and with reinforcements to form unique anchoring systems. The components of each system are structured from reinforcing wire and wire formatives.
- U.S. Pat. No. 6,851,239—Hohmann et al.—Issued Feb. 8, 2005 Discloses a high-span anchoring system described for a cavity wall incorporating a wall reinforcement combined with a wall tie which together serve a wall construct having a larger-than-normal cavity. Further the various embodiments combine wire formatives which are compressively reduced in height by the cold-working thereof. Among the embodiments is a veneer anchoring system with a low-profile wall tie for use in a heavily insulated wall.
- U.S. Pat. No. 7,017,318—Hohmann, et al.—Issued Mar. 28, 2006 Discloses an anchoring system with low-profile wall ties in which insertion portions of the wall anchor and the veneer anchor are compressively reduced in height.
- U.S. Pat. No. 7,325,366—Hohmann, Jr. et al.—Issued Feb. 5, 2008 Discloses snap-in veneer ties for a seismic construction system in cooperation with low-profile, high-span wall anchors.
- None of the above anchors or anchoring systems provide a veneer tie having a high-strength rectangular veneer tie for fulfilling the need for enhanced compressive and tensile properties and high-strength interconnection. This invention relates to an improved anchoring arrangement for use in conjunction with cavity walls having an inner wythe and an outer wythe and meets the heretofore unmet needs described above.
- In general terms, one embodiment of the invention is a high-strength pintle veneer tie and an anchoring system utilizing the same for cavity walls having an inner and outer wythe. The system includes a rectangular wire-formative veneer tie for emplacement in the outer wythe. The high-strength construction system hereof is applicable to construction of a wall having an inner wythe which, can either be of dry wall construction or masonry block, and an outer wythe, as well as, to insulated and non-insulated structures and high-span construction. The wythes are in a spaced apart relationship and form a cavity therebetween. In the disclosed system, a unique combination of a wall anchor (attachable to either ladder- or truss-type reinforcement for masonry inner wythes or to metal studs of a dry wall construct or directly to a masonry inner wythe), a wire veneer tie, and, optionally, a continuous wire reinforcement is provided. The invention contemplates that the veneer ties are wire formatives with a rectangular cross-section with high-strength pintles depending into the wall cavity for connections between the veneer tie and the wall anchor.
- In the embodiments of this invention, the veneer tie is formed from a rectangular wire formative and interconnected within the apertures of the wall anchor. The interconnection restricts movement in the x- and z-axes and maintains a high-strength connection. An alternative design veneer tie has a square cross-section which provides greater volumetric occupancy than a traditional circular wire. The square wire pintles are optionally compressed to increase the tensile and compressive strength of the wire.
- The veneer tie is positioned so that the insertion end thereof is embedded in the bed joint of the outer wythe. The construction of the veneer tie results in an orientation upon emplacement so that the widest part of the pintle is subjected to compressive and tensile forces. The insertion end of the veneer tie is optionally compressed to provide a high strength connection within the bed joint and is positioned on the outer wythe so that a continuous reinforcement wire can be snapped into and secured to the outer wythe. The snap-in feature of the anchor here replaces the traditional function of the seismic clip for accommodating a straight wire run (see U.S. Pat. No. 4,875,319) and receiving the open end of the box tie.
- It is an object of the present invention to provide in an anchoring system having an outer wythe and an inner wythe, a high-strength veneer tie that interengages a wall anchor which system further includes a rectangular wire veneer tie.
- It is another object of the present invention to provide labor-saving devices to simplify seismic and nonseismic high-strength installations of brick and stone veneer and the securement thereof to an inner wythe.
- It is yet another object of the present invention to provide a veneer tie that increases volumetric occupancy in the bed joint.
- It is a further object of the present invention to provide an anchoring system for cavity walls comprising a limited number of component parts that are economical of manufacture resulting in a relatively low unit cost.
- It is yet another object of the present invention to provide an anchoring system which restricts lateral and horizontal movements of the facing wythe with respect to the inner wythe, but is adjustable vertically.
- It is a feature of the present invention that the veneer tie, after being inserted into the receptors therefor, pintles are oriented so that the widest portion thereof is subjected to compressive to tensile forces.
- It is another feature of the present invention that the veneer ties are utilizable with either a masonry block having aligned or unaligned bed joints and for a dry wall construct that secures to a metal stud.
- Other objects and features of the invention will become apparent upon review of the drawings and the detailed description.
- In the following drawings, the same parts in the various views are afforded the same reference designators.
-
FIG. 1 is a perspective view of a first embodiment of an anchoring system having a high-strength rectangular veneer tie of this invention and side-welded, wall anchor and shows a wall with an inner wythe of masonry block and an outer wythe of brick veneer; -
FIG. 2 is a perspective view of the veneer tie and anchor ofFIG. 1 showing details of the wall anchor and the rectangular veneer tie; -
FIG. 3 is a partial cross-sectional view of the anchoring system ofFIG. 2 on a substantially vertical plane showing the receptor portion of the wall anchor and the pintle of the veneer tie; -
FIG. 4 is a partial cross-sectional view of the anchoring system ofFIG. 2 on a substantially horizontal plane showing the receptor portion of the wall anchor and the pintle of the veneer tie; -
FIG. 5 is a perspective view of a second embodiment of an anchoring system having a veneer tie with high-strength rectangular pintles of this invention, wherein the building system therefor includes a sheetmetal anchor for a drywall inner wythe; -
FIG. 6 is a perspective view of the anchor and veneer ties ofFIG. 5 showing the details of the rectangular veneer tie and anchor; -
FIG. 7 is a perspective view of the veneer tie ofFIG. 5 set within an alternative design anchor and having the interconnecting portions compressively reduced; -
FIG. 8 is a perspective view of a third embodiment of an anchoring system having a veneer tie with high-strength rectangular pintles of this invention and a side-welded, wall anchor and shows a wall with a high-span cavity to accommodate increased insulation with a compressed veneer tie insertion portion and a reinforcement wire set therewithin; and, -
FIG. 9 is a cross-sectional view of a circular wire formative veneer tie and a rectangular wire formative veneer tie having the same diameter and sets forth the respective volumetric occupancy rates. - In the embodiments described herein the veneer ties are formed from high-strength rectangular wire formatives which provide a greater volumetric occupancy ratio within the same ⅜-inch bed joint than a than that of a corresponding traditional cylindrical wire formative. The use of a rectangular wire provides a locking fit within the rounded anchor interconnection area. The use of a rectangular wire within the circular enclosure restricts movement along the x- and z-axes.
- Before proceeding to the detailed description, the following definitions are provided. For purposes of defining the invention at hand, compression of the wire formative occurs through cold working so that the resultant body is substantially semicircular at the edges and has flat surfaces therebetween. In use, the rounded edges are aligned so as to receive compressive forces transmitted from the veneer or outer wythe, which forces are generally normal to the facial plane thereof. In the discussion that follows the width of the compressed interconnecting portion is also referred to as the major axis and the thickness is referred to as the minor axis.
- As the compressive forces are exerted on the edges of the compressed portions, it withstands forces greater than uncompressed wire formatives formed from the same gage wire. Information reflecting the enhancement represented by the cold-worked wire formatives is included hereinbelow.
- In accordance, with the Building Code Requirements for Masonry Structures, ACI 530-05/ASCE 5-05/TMS 402-05, Chapter 6, each wythe of the cavity wall structure is designed to resist individually the effects of the loads imposed thereupon. Further, the veneer (outer wythe) is designed and detailed to accommodate differential movement and to distribute all external applied loads through the veneer to the inner wythe utilizing masonry anchors and ties.
- The description which follows is of three embodiments of anchoring systems utilizing the pintle veneer tie devices of this invention, which devices are suitable for nonseismic and seismic cavity wall applications. Two of the embodiments apply to cavity walls with masonry block inner wythes, and the remaining embodiment to a cavity wall with a dry wall (sheetrock) inner wythe. The wall anchor of the first embodiment is adapted from that shown in U.S. Pat. No. 6,789,365 of the inventors hereof.
- Referring now to
FIGS. 1 through 4 and 9 the first embodiment of the anchoring system hereof including a high-strength veneer tie of this invention is shown and is referred to generally by thenumber 10. In this embodiment, awall structure 12 is shown having a backup wall orinner wythe 14 of masonry blocks 16 and a veneer facing orouter wythe 18 of facing brick orstone 20. Between thebackup wall 14 and the facingwall 18, acavity 22 is formed, whichcavity 22 extends outwardly fromsurface 24 ofbackup wall 14 and optionally containsinsulation 23. - In this embodiment,
successive bed joints blocks 16 and the joints are substantially planar and horizontally disposed. Also,successive bed joints brick 20 and the joints are substantially planar and horizontally disposed. For each structure, thebed joints - For purposes of discussion, the
exterior surface 24 of thebackup wall 14 contains a horizontal line orx-axis 34 and an intersecting vertical line or y-axis 36. A horizontal line or z-axis 38, normal to the xy-plane, also passes through the coordinate origin formed by the intersecting x- and y-axes. In the discussion which follows, it will be seen that the various anchor structures are constructed to restrict movement interfacially—wythe vs. wythe—along the z-axis and, in this embodiment, along the x-axis. Thedevice 10 includes awall anchor 40 constructed for embedment in bed joint 26, which, in turn, includes a free end with one ormore receptor portions 58 having two legs or traversewire member 54 extending intocavity 22. Further, thedevice 10 includes a wire formative veneer tie oranchor 44 for embedment inbed joint 30. - The
wall anchor 40 is shown inFIG. 1 as being emplaced on a course ofblocks 16 in preparation for embedment in the mortar ofbed joint 26. In the best mode of practicing this embodiment, a truss-type wallreinforcement wire portion 46 is constructed of a wire formative with two parallel continuousstraight wire members rods 52 are interposed therebetween and connectwire members truss structure 46. Alternatively, a ladder-type wall reinforcement as shown inFIG. 8 is applicable to the present invention. - At intervals along the
wall reinforcement 46, spaced pairs of transverse wire members orlegs 54 are attached thereto and are attached to each other by arear leg 56 therebetween or directly to the straight wire member as shown inFIG. 8 . These pairs ofwire members 54 extend intocavity 22 toveneer tie 44. As will become clear by the description which follows, the spacing between thetransverse wire members 54 is constructed to limit the x-axis movement of the construct. Eachtransverse wire member 54 has at the end opposite the attachment end an eyelet orreceptor portion 58 formed contiguously therewith. - Upon installation, the eye or
aperture 60 ofreceptor portion 58 is constructed to be within a substantially horizontal plane normal toexterior surface 24. Theaperture 60 is dimensioned to accept a pintle of the veneer tie oranchor 44 therethrough and has a slightly larger opening than that required to accommodate the pintle. This relationship minimizes the movement of the construct in along a z-vector and in an xz-plane. For positive engagement, theaperture 60 ofreceptor portion 58 is sealed forming a closed loop. Alternatively, asingle eyelet 259 with a substantiallyoval opening 261, as shown inFIG. 8 , is used. Thesingle eyelet 259 is welded closed. - The
veneer tie 44 is, when viewed from a top or bottom elevation, generally U-shaped and is dimensioned to be accommodated by the pair ofeye wires 58 or asingle eyelet 259 previously described. Thetie 44 is a wire formative with a substantially rectangular cross-section and has two interengaging end portions orpintles side cavity portions insertion end portion 70. As more clearly seen inFIGS. 3 and 4 , therectangular pintles 62, when viewed as installed, have a cross-section taking in a horizontal or an xz-plane that includes the longitudinal axis of thereceptor 58 and shows thegreatest dimension 61 substantially oriented along a z-vector. Similarly, when viewed as installed, the pintle cross-section taking in a vertical plane that includes the longitudinal axis of thewire member 54 shows themajor axis dimension 61 substantially oriented along a z-vector. - The cross-sectional illustrations show the manner in which wythe-to-wythe and side-to-side movement is limited by the close fitting relationship between the pintles and the receptor openings. Alternatively, a
veneer tie 144 with a substantially square cross-section, as shown inFIG. 6 , is interchangeable with theveneer tie 44. Theveneer tie 144interengaging end portions veneer tie 44interengaging end portions FIGS. 2 through 4 thereby increasing tension and compression ratings of the wire formative. Aveneer tie 144 with a substantially square cross-section, as shown inFIG. 9 , a 27% higher volumetric occupancy rate than that of a round wire having the same diameter thereby providing a stronger interconnection with theouter wythe 12. - The veneer tie insertion portion is optionally compressively reduced as shown in
FIG. 8 . The tie 244 has aninsertion portion 270 that is compressibly deformed and has apattern 247 of recessed areas orcorrugations 257 impressed thereon for receiving mortar within the recessedareas 257. Theinsertion portion 270 is configured to maximize surface contact with the mortar in thebed joint 30. Theinsertion portion 270 of the veneer tie 244 is a wire formative formed from a wire having a diameter substantially equal to the predetermined height of the mortar joint. Upon compressible reduction in height, theinsertion portion 270 is mounted upon the exterior wythe and positioned to receive mortar thereabout. Theinsertion portion 270 retains the mass and substantially the tensile strength as prior to deformation. The vertical height of theinsertion portion 270 is reduced so that, upon installation, mortar of bed joint 30 flows around theinsertion portion 270. - Upon compression, a pattern or
corrugation 257 is impressed oninsertion portion 270 and, upon the mortar of bed joint 30 flowing around theinsertion portion 270, the mortar flows into thecorrugation 257. For enhanced holding, thecorrugations 257 are, upon installation, substantially parallel tox-axis 34. In this embodiment, thepattern 247 is shown impressed on only one side thereof; however, it is within the contemplation of this disclosure that corrugations or other patterning could be impressed on other surfaces of theinsertion portion 270. Other patterns such as a waffle-like, cellular structure and similar structures optionally replace the corrugations. With the veneer tie 244 constructed as described, the veneer tie 244 is characterized by maintaining substantially all the tensile strength as prior to compression while acquiring a desired low profile. - The
insertion portion 270 is optionally configured (as shown inFIG. 8 ) to accommodate therewithin a reinforcement wire orstraight wire member 271 of predetermined diameter. Theinsertion portion 270 has acompression 273 dimensioned to interlock with thereinforcement wire 271. With this configuration, the bed joint height specification is readily maintained and the reinforcingwire 271 interlocks with the veneer tie 244 within the 0.300-inch tolerance, thereby forming a seismic construct. - The description which follows is of a second embodiment of the high-strength anchoring system. For ease of comprehension, where similar parts are used reference designators “100” units higher are employed. Thus, the
veneer tie 144 of the second embodiment is analogous to theveneer tie 44 of the first embodiment. - Referring now to
FIGS. 3 through 7 and 9, the second embodiment of the high-strength anchoring system is shown and is referred to generally by the numeral 110. Thesystem 110 employs asheetmetal wall anchor 140. Thedry wall structure 112 is shown having aninterior wythe 114 withwallboard 116 as the interior and exterior facings thereof. An exterior orouter wythe 118 of facingbrick 120 is attached todry wall structure 112 and acavity 122 is formed therebetween. Thedry wall structure 112 is constructed to include, besides thewallboard facings 116,vertical channels 124 withinsulation layers 126 disposed betweenadjacent channel members 124. Selectedbed joints - For purposes of discussion, the
exterior surface 125 of theinterior wythe 114 contains a horizontal line orx-axis 134 and an intersecting vertical line or y-axis 136. A horizontal line or z-axis 138 also passes through the coordinate origin formed by the intersecting x- and y-axes. Thesystem 110 includes adry wall anchor 140 constructed for attachment tovertical channel members 124, for embedment in joint 130 and for interconnecting with theveneer tie 144. - Reference is now directed to the L-shaped, surface-mounted sheetmetal bracket or
wall anchor 140 comprising a mounting portion orbase plate member 146 and free end projecting or extendingportion 148 into thecavity 122. The projecting or extending portion(s) 148 is contiguous with thebase plate member 146 so as to have, upon installation, a horizontally disposedelongated aperture 150 which provides for wire-tie-receivingreceptors 151. Theaperture 150 is formed inplate member 146. Alternatively, Upon installation, the projectingportion 148 is thus disposed substantially at right angles with respect to theplate member 146. To ease tolerance,receptors 151 may be slightly elongated along the x-axis thereof. Theplate member 146 is also provided with mountingholes 156 at the upper and lower ends thereof. Theinterengaging end portions - The projecting
portion 148 is spaced from theplate member 146 and adapted to receive theinterengaging end portions veneer tie 144 therewithin. In the fabrication of the dry wall as the inner wythe of thisconstruction system 110, thechannel members 124 are initially secured in place. In this regard, thechannel members 124 may also comprise the standard framing member of a building. Sheets ofexterior wallboard 116, which may be of an exterior grade gypsum board, are positioned in abutting relationship with the forward flange of thechannel member 124. While the insulatinglayer 126 is shown as panels dimensioned for use betweenadjacent column 124, it is to be noted that any similarly suited rigid or flexible insulating material may be used herein with substantially equal efficacy. - After the initial placement of the
flexible insulation layer 126 and thewallboard 116, the veneer anchors 140 are secured to the surface of thewallboard 116 in front ofchannel members 124. Thereafter, sheetmetal screws 127 are inserted into the mountingholes 156 to fasten theanchor 140 to thechannel member 124. - The
veneer tie 144 is, when viewed from a top or bottom elevation, generally U-shaped and is dimensioned to be accommodated by thewall anchor 140. Thetie 144 is a wire formative with a substantially square cross-section and has two interengaging end portions orpintles side cavity portions 166 and 168, and aninsertion end portion 170. Alternatively, aveneer tie 44 with a substantially rectangular cross-section, as shown inFIG. 2 , is interchangeable with theveneer tie 144. Theveneer tie 144interengaging end portions veneer tie 44interengaging end portions FIGS. 2 through 4 , thereby increasing tension and compression ratings of the wire formative. Aveneer tie 144 with a substantially square cross-section provides, as shown inFIG. 9 , a 27% higher volumetric occupancy rate than that of a round wire having the same diameter, thereby providing a stronger interconnection with theouter wythe 118. As more clearly seen inFIG. 7 , thepintles - The veneer tie insertion portion is optionally compressively reduced as shown in
FIG. 8 . The tie has aninsertion portion 270 that is compressibly deformed and has apattern 247 of recessed areas orcorrugations 257 impressed thereon for receiving mortar within the recessedareas 257. Theinsertion portion 270 is configured to maximize surface contact with the mortar in thebed joint 30. Theinsertion portion 270 of the veneer tie 244 is a wire formative formed from a wire having a diameter substantially equal to the predetermined height of the mortar joint. Upon compressible reduction in height, theinsertion portion 270 is mounted upon the exterior wythe and positioned to receive mortar thereabout. Theinsertion portion 270 retains the mass and substantially the tensile strength as prior to deformation. The vertical height of theinsertion portion 270 is reduced so that, upon installation, mortar of bed joint 130 flows around theinsertion portion 270. - Upon compression, a pattern or
corrugation 257 is impressed oninsertion portion 270 and, upon the mortar of bed joint 130 flowing around theinsertion portion 270, the mortar flows into thecorrugation 257. For enhanced holding, thecorrugations 257 are, upon installation, substantially parallel to thex-axis 134. In this embodiment, thepattern 247 is shown impressed on only one side thereof; however, it is within the contemplation of this disclosure that corrugations or other patterning could be impressed on other surfaces of theinsertion portion 270. Other patterns such as a waffle-like, cellular structure and similar structures optionally replace the corrugations. With the veneer tie 244 constructed as described, the veneer tie 244 is characterized by maintaining substantially all the tensile strength as prior to compression while acquiring a desired low profile. - The
insertion portion 270 is optionally configured (as shown inFIG. 8 ) to accommodate therewithin a reinforcement wire orstraight wire member 271 of predetermined diameter. Theinsertion portion 270 has acompression 273 dimensioned to interlock with thereinforcement wire 271. With this configuration, the bed joint height specification is readily maintained and the reinforcingwire 271 interlocks with the veneer tie 244 within the 0.300-inch tolerance, thereby forming a seismic construct. - The description which follows is of a third embodiment of the high-strength pintle anchoring system. In this embodiment, the wall anchor portion is adapted from the high-span anchor and wall reinforcement device of U.S. Pat. No. 6,668,505 to Hohmann, et al. For ease of comprehension, where similar parts are shown, reference designators “200” units higher than those previously employed are used. Thus, the veneer tie 244 of the third embodiment is analogous to the
veneer tie 44 of the first embodiment. Referring now toFIGS. 8 and 9 , the third embodiment of a high-strength pintle anchoring system of this invention is shown and is referred to generally by thenumerals 240 for the wall anchor, 244 for the veneer tie, and 246 for the backup wall reinforcement. As this embodiment is similar to the first embodiment, the wall structure is partially shown, but the wall structure ofFIG. 1 is incorporated herein by reference. - The backup wall is insulated with strips of
insulation 223 attached to the cavity surface of the backup wall and hasseams 225 between adjacent strips coplanar with adjacent bed joints. In this embodiment, thecavity 222 is larger-than-normal and has a 5-inch span. - The
wall anchor 240 is shown inFIG. 8 and has a free end orextension 242 that spans the insulation and cavity for interconnection with veneer tie 244. In this embodiment, a ladder-type wall reinforcement 246 is constructed of a wire formative with two parallel continuous straightside wire members intermediate wire body 252 is interposed therebetween and is butt welded to wiremembers wall anchor 240 is fusibly attached at anattachment end 245 to thewall reinforcement 248. Thewall reinforcement 248 has an upper surface in one plane and a lower surface in a plane substantially parallel thereto. Thewall anchor 240 extends between the plane of the upper surface and the plane of the lower surface from anattachment end 245, which is fusibly attached, to the vertical surface of the backup wall. - Pairs of wire members or
extended leg portions 254 extend into thecavity 222 and have afree end 249 opposite theattachment end 245 and receptor portions 259 (single as shown inFIG. 8 or in the alternative tworeceptor portions 58 as shown inFIG. 2 ) contiguous therewith. The spacing therebetween limits the x-axis movement of the construct. Eachreceptor portion 259 has an eyelet orreceptor opening 261 formed continuous therewith. Upon installation, thereceptor opening 261 is constructed to be within a substantially horizontal or xz-plane, which is normal to the cavity walls. Thereceptor portion 259 is horizontally aligned to accept theinterengaging end portion receptor openings 261 are slightly greater than the width or major axis of theinterengaging end portion - The veneer tie 244 is, when viewed from a top or bottom elevation, generally U-shaped and is dimensioned to be accommodated by the pair of
eyelets 58 or asingle eyelet 259 previously described. The tie 244 is wire formative with a substantially rectangular cross-section and has two interengaging end portions orpintles side cavity portions insertion end portion 270. - The cross-sectional illustrations show the manner in which wythe-to-wythe and side-to-side movement is limited by the close fitting relationship between the pintles and the receptor openings. Alternatively, a
veneer tie 144 with a substantially square cross-section, as shown inFIG. 6 , is interchangeable with the veneer tie 244. Aveneer tie 144 with a substantially square cross-section, as shown inFIG. 9 , a 27% higher volumetric occupancy rate than that of a round wire having the same diameter thereby providing a stronger interconnection with theouter wythe 118. - The veneer tie insertion portion is optionally compressively reduced as shown in
FIG. 8 . The tie has aninsertion portion 270 that is compressibly deformed and has apattern 247 of recessed areas orcorrugations 257 impressed thereon for receiving mortar within the recessedareas 257. Theinsertion portion 270 is configured to maximize surface contact with the mortar in the bed joint 230. Theinsertion portion 270 of the veneer tie 244 is a wire formative formed from a wire having a diameter substantially equal to the predetermined height of the mortar joint. Upon compressible reduction in height, theinsertion portion 270 is mounted upon the exterior wythe and positioned to receive mortar thereabout. Theinsertion portion 270 retains the mass and substantially the tensile strength as prior to deformation. The vertical height of theinsertion portion 270 is reduced so that, upon installation, mortar of bed joint 230 flows around theinsertion portion 270. - Upon compression, a pattern or
corrugation 257 is impressed oninsertion portion 270 and, upon the mortar of bed joint 230 flowing around theinsertion portion 270, the mortar flows into thecorrugation 257. For enhanced holding, thecorrugations 257 are, upon installation, substantially parallel to x-axis 234. In this embodiment, thepattern 247 is shown impressed on only one side thereof; however, it is within the contemplation of this disclosure that corrugations or other patterning could be impressed on other surfaces of theinsertion portion 270. Other patterns such as a waffle-like, cellular structure and similar structures optionally replace the corrugations. With the veneer tie 244 constructed as described, the veneer tie 244 is characterized by maintaining substantially all the tensile strength as prior to compression while acquiring a desired low profile. - The
insertion portion 270 is optionally configured (as shown inFIG. 8 ) to accommodate therewithin a reinforcement wire orstraight wire member 271 of predetermined diameter. Theinsertion portion 270 has acompression 273 dimensioned to interlock with thereinforcement wire 271. With this configuration, the bed joint height specification is readily maintained and the reinforcingwire 271 interlocks with the veneer tie 244 within the 0.300-inch tolerance, thereby forming a seismic construct. - Because many varying and different embodiments may be made within the scope of the inventive concept herein taught, and because many modifications may be made in the embodiments herein detailed in accordance with the descriptive requirement of the law, it is to be understood that the details herein are to be interpreted as illustrative and not in a limiting sense.
Claims (20)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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CA2844946A CA2844946C (en) | 2013-03-12 | 2014-03-06 | High-strength rectangular wire veneer tie and anchoring systems utilizing the same |
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US13/796,754 US8833003B1 (en) | 2013-03-12 | 2013-03-12 | High-strength rectangular wire veneer tie and anchoring systems utilizing the same |
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US8800241B2 (en) | 2012-03-21 | 2014-08-12 | Mitek Holdings, Inc. | Backup wall reinforcement with T-type anchor |
US8904730B2 (en) | 2012-03-21 | 2014-12-09 | Mitek Holdings, Inc. | Thermally-isolated anchoring systems for cavity walls |
US8661766B2 (en) | 2012-06-22 | 2014-03-04 | Mitek Holdings, Inc. | Anchor with angular adjustment |
US8739485B2 (en) | 2012-06-28 | 2014-06-03 | Mitek Holdings, Inc. | Low profile pullout resistant pintle and anchoring system utilizing the same |
-
2013
- 2013-03-12 US US13/796,754 patent/US8833003B1/en active Active
-
2014
- 2014-03-06 CA CA2844946A patent/CA2844946C/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2016099157A1 (en) * | 2014-12-18 | 2016-06-23 | 삼성전자 주식회사 | Message transmission and reception technique using channel combining and splitting |
Also Published As
Publication number | Publication date |
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US8833003B1 (en) | 2014-09-16 |
CA2844946C (en) | 2017-08-15 |
CA2844946A1 (en) | 2014-09-12 |
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