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T E C H N I C A L B U L L E T I N

D A Y T O N S U P E R I O R . C O M • B U I L D I N G S T R E N G T H

M A S O N R Y A C C E S S O R I E S

Masonry Joint Reinforcementand Anchor Selection Guide

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INDEXItemPageBrochures ............................................................................................................20Corrosion Protection ..............................................................................................2Customer Service ................................................................................................20DA100 Dovetail Anchor Slot ...................................................................................9DA101 Dovetail Anchor Slot ...................................................................................9DA131 Seismic Dovetail Anchor ............................................................................9DA210X Veneer Anchor Screw-On Plate .............................................................10DA213 Pintle ........................................................................................................ 11DA213 Seismic Pintle .......................................................................................... 11DA213 Veneer Anchor Plate ................................................................................ 11DA213QT Lite Duty Seismic Pintle ...................................................................... 11DA2200 Joint Stabilization Anchor .......................................................................15DA411 Wall Top Stabilization Anchor ...................................................................12 DA431 Seismic Veneer Anchor ............................................................................12DA5213 Veneer Anchor Plate Assembly ..............................................................15DA5410 Expansion Anchor ..................................................................................18DA5431 Veneer Anchor Plate Assembly ..............................................................16DA5610 Expansion Anchor ..................................................................................18DA5801 Adjustable Speed Set Anchor Assembly ................................................ 15DA601 Column Anchors .......................................................................................12DA700 Series Triangular Ties ........................................................................10, 13DA709 Column Anchor Weld-On .........................................................................13DA720 Series Dovetail Triangular Tie ....................................................................9DA801 Adjustable Speed Set Anchor ..................................................................13DA807 Steel Stud Veneer Screw .........................................................................17DA808 Wood Stud Screw ....................................................................................17DA8800 OCM Masonry Rebar Anchor .................................................................16DA901 Channel Anchor Slot ................................................................................14DA913 Channel Anchor .......................................................................................14DA918 Channel Anchor Triangular Tie .................................................................14DA931 Seismic Channel Anchor ..........................................................................14DA995 Stainless Steel Screw – Type 304 ...........................................................17Definitions Masonry Wall Reinforcement ...............................................................2Design Changes ..................................................................................................20Disclaimer ............................................................................................................20General Warranty .................................................................................................20Horizontal Masonry Joint Reinforcement ...............................................................4Interchangeability .................................................................................................20Introduction ............................................................................................................1Masonry Veneer Anchor Spacing ...........................................................................8Masonry Veneer Anchors ...................................................................................... .7 Masonry Wall Reinforcement .................................................................................4Minimum Area of Steel Required To Satisfy Code ................................................. 5Multi-Wythe Construction – Wythes Laid At Different Times .................................. 7Multi-Wythe Construction – Wythes Laid At Same Time ........................................ 7Safety Information ................................................................................................20Shop or Field Modification ...................................................................................20Single Wythe Construction .....................................................................................6Standards ...............................................................................................................1Stone Anchors ......................................................................................................19Technical Service .................................................................................................20

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INTRODUCTIONBuilding codes govern the design of masonry structures and most codes reference either the current or an earlier

version of the Building Code Requirements for Masonry Structures (ACI 530-05/ASCE 5-05/TMS 402-05), which is generally referred to as the ACI 530 Code. When the ACI 530 Code supplements a legally adopted building code it means the ACI 530 Code governs in all areas relating to the structural design and construction of masonry structures, except where the ACI 530 Code is in conflict with requirements in the legally adopted code. In areas of the United States without a legally adopted building code, the ACI 530 Code defines the minimum acceptable standards of design and construction practices.

The type, size and location of connectors shall be shown or indicated on the project drawings as required by the ACI 530 Code.

For more than 65 years, Dur-O-Wal has been manufacturing masonry joint reinforcement and accessories. During this time, Dur-O-Wal, as well as the other manufacturers of masonry accessories, has traditionally manufactured and sold a great variety of connector types. Many of these were never tested and they may or may not meet the requirements of today’s modern building codes.

For construction utilizing concrete masonry units (CMU), Dur-O-Wal strongly recommends the use of masonry joint reinforcement or assemblies using masonry joint reinforcement instead of unit ties. This is due to the improved embedment strength and ductility obtained by using continuous wire in the CMU face shell bedding versus the use of individual unit ties. In addition, when masonry joint reinforcement is used, the presence and spacing of wall ties is guaranteed.

Many of the products manufactured and marketed by Dur-O-Wal have been tested and meet the requirements of the ACI 530 Code. This publication attempts to reduce the variety of connectors used and to answer questions regarding the selection of connectors for various conditions. Dur-O-Wal has published this Technical Bulletin for use by architects and engineers; however, the architect or engineer should select connector based on their own analysis and design.

STANDARDSThe masonry accessories manufactured and supplied by Dur-O-Wal meet or exceed the following standards:

MATERIAL ASTM STANDARD SPECIFICATIONS

Brass B16/B16M-05Bolts and Anchors A307-04 Grade AMasonry Wall Reinforcement A951-02Control Joints, PVC D2287-99 (2000)Control Joints, Rubber D2000-05Sheet Metal, Carbon Steel A1008/A1008M-05b, A109/A109M-03 and A1011A-03Sheet Metal, Hot Dipped Galvanized A153/A153M-05 (1.5 ounce of zinc per square foot)Sheet Metal, Mill Galvanized A653/A653M-05a (0.6 ounce zinc per square foot)Sheet Metal, Stainless Steel A167-99 (2004) - Type 304Steel Plate, Carbon Steel A36/A36M-05Wire, Carbon Steel A82/A82M-05aWire, Hot Dipped Galvanized A153/A153M-05 (1.5 ounce of zinc per square foot)Wire, Mill Galvanized A641/A641M-03 (0.1 ounce of zinc per square foot)Wire, Stainless Steel A580/A580M-98 (2000) - Type 304Masonry Wall Reinforcement A951/A951M-06

Masonry Joint Reinforcement and Anchor Selection Guide

Masonry Joint Reinforcement & Anchor Selection Guide

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CORROSION PROTECTIONThe ACI 530 Code requires that all exterior masonry walls exposed to earth or weather and interior walls exposed

to a mean relative humidity of 75 percent or more shall have:• Masonry wall reinforcement and anchors produced from stainless steel or carbon steel that is protected from corrosion by hot-dip galvanized coating or epoxy coating. All other interior walls shall use masonry reinforcement and anchors that are mill galvanized, hot dipped galvanized or stainless steel.

Masonry accessories produced from stainless steel provide outstanding corrosion protection and offer excellent longevity to a masonry structure. Carbon steel, when coated with zinc provides much better corrosion protection than does an epoxy coated steel product. Zinc offers sacrificial protection to carbon steel providing protection in the event the protective zinc coating becomes scratched or damaged. Due to this sacrificial process, zinc coated products do not normally significantly corrode until the adjoining zinc coating has been expended.

Mill galvanized provides only a thin coating of zinc that is applied to carbon steel before any product fabrication is preformed. Any welds or exposed edges left by the fabrication process are not coated with zinc. Mill galvanizing does not provide reliable protection for use in an exterior anchoring system.

Carbon steel products that are hot dipped galvanized (HDG) after fabrication have excellent resistance to corrosion, provided by its thicker zinc coating. HDG is the last step in the fabrication of a masonry accessory and ensures that welds and cut edges are protected with zinc. The thicker the zinc coating the longer it offers corrosion protection.

Dur-O-Wal does not recommend the use of epoxy coated masonry joint reinforcement or accessories as the epoxy coating does not offer sacrificial protection and any “holiday” that may develop during the coating process or later coating damage will lead to the development of corrosion.

Plain or uncoated carbon steel masonry joint reinforcement and accessories are specifically not allowed by the ACI 530 Code and are not recommended by Dur-O-Wal as it offers no protection from corrosion and can corrode while in transit, stored in a warehouse or in storage at a jobsite.

For extended life and corrosion protection, restoration anchors are fabricated with a brass expansion sleeve, brass expander cone, inner rod from Type 304 Stainless Steel and a stainless steel or a galvanized bolt and washer.

DEFINITIONSACI - American Concrete Institute, 38800 Country Club Drive, Farmington Hills, MI 48331 U.S.A Phone: (248) 848-3700. ANCHOR - A metal rod, wire or strap that secures masonry to its structural support.ANCHOR PULLOUT - An anchor failure defined by the anchor sliding out of the material in which it is embedded without breaking out a substantial portion of the surrounding material.ANCHOR, TWO PIECE ADJUSTABLE - A two-part anchor, which is vertically and/or horizontally adjustable.AREA, GROSS CROSS-SECTIONAL - The area delineated by the out-to-out dimensions of masonry in the plane under consideration.ASCE - American Society of Civil Engineers, 1801 Alexander Bell Drive, Reston, Virginia 20191 U.S.A. Phone: (800) 548-2723.BACKING - The structural wall or surface to which veneer is secured.BED JOINT - The horizontal layer of mortar on which a masonry unit is laid.BUILDING CODE - A set of rules that specify the minimum acceptable level of safety for the construction and occupancy of masonry structures. CAVITY - The space between the structural backing and veneer and it may or may not contain insulation.CAVITY WALL - A multi-wythe non-composite masonry wall with a continuous air space within the wall (with or without insulation), which is tied together with metal ties.CMU or CONCRETE MASONRY UNIT - The term to describe either a solid or hollow masonry unit produced from concrete.CONNECTOR - A mechanical device for securing two or more pieces, parts or members together, including anchors, wall ties and fasteners.


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DESIGN STRENGTH - The nominal strength of an element multiplied by the appropriate strength reduction factor.DIMENSION, NOMINAL - The specified dimension plus the allowance for the joints with which the units are to be laid. Nominal dimensions are usually stated in whole numbers. Thickness is given first, followed by height and then length.DIMENSIONS, SPECIFIED - Dimensions specified for the manufacture or construction of a unit, joint or element.FASTENER - A device, typically having threads over a portion of its length, used to attach anchor components to masonry.HEAD JOINT - The vertical mortar joint placed between masonry units within a wythe at the time masonry is laid. LADUR MASONRY JOINT REINFORCEMENT - Masonry wire reinforcement where the side wires are connected in a single plane by perpendicular cross wires.LOAD, DEAD - Those loads, which are permanent and unable to be removed and include the self-weight of the structure, which normally provides the largest portion of the dead load of a building. LOAD, DESIGN - Applied loads that include dead load and live loads such as wind and seismic loads.LOAD, LIVE - That portion of the total load on a structure that is not a permanent part of the structure. They can be variable, as in the case of loads contributed by the occupancy, wind, seismic and snow.LOAD, LIVE LATERAL - Loads that are the result of wind and earthquakes.LOAD, ULTIMATE - The average value at which the product will no longer support load or fails. LOAD SERVICE – Service load specified by the legally adopted building code.MASONRY, ASHLAR - Masonry composed of rectangular units of burned clay or shale, or stone, generally larger than brick and properly bonded, having sawed, dressed or squared beds and joints laid in mortar.MASONRY BREAKOUT – Anchor failure defined by the separation of a volume of masonry, approximately conical in shape from the backing or veneer.MASONRY, JOINT REINFORCEMENT (MJR) - reinforcement in the mortar joints or grouted cells used to resist stresses. (2) Unit masonry in which reinforcement is embedded in such a manner that the component materials act together to resist applied forces. MASONRY, REINFORCED - Masonry containing reinforcement in the mortar joints or grouted cells used to resist stresses. (2) Unit masonry in which reinforcement is embedded in such a manner that the component materials act together to resist applied forces. MASONRY, RUBBLE STONE - Masonry composed of roughly shaped stones, well bonded and laid at irregular vertical intervals to discontinuous but approximately level beds or courses.MASONRY UN-REINFORCED - Masonry in which the tensile resistance of the masonry is taken into consideration and the resistance of reinforcement, if present, is neglected. Also called plain masonry.MORTAR - A plastic mixture of cementitious materials, fine aggregate and water.MJR - Prefabricated horizontal masonry wall wire reinforcing TMS - The Masonry Society, 3970 Broadway, Suite 201-D, Boulder, CO USA 80304, Phone: 303-939-9700TIE, WALL - Metal connectors that connect wythes of masonry walls together. TRUSS MASONRY JOINT REINFORCEMENT - Masonry wire reinforcement where the side wires are connected in a single plane by a continuous “zig zag” cross wire.VENEER, ANCHORED - Veneer secured to and supported by anchors attached to a backing.VENEER, MASONRY - Nonstructural facing of brick, concrete, stone, tile, or other similar material attached to a backing for the purpose of ornamentation, protection or insulation.WALL - A vertical element, used to enclose space, with a horizontal length to thickness ratio greater than 3.WALL TIES - Metal connectors that connect wythes of masonry walls together. WYTHE - Each continuous vertical section of a wall, one masonry unit in thickness.


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MASONRY WALL REINFORCEMENT The ACI Building Code Requirements for Masonry Structures requires reinforced masonry construction to have

the total area of horizontal and vertical steel reinforcement equal to at least 0.002 times the gross cross-section area of the wall with a minimum in either direction of not less than 0.0007 times the wall area.

The use of Dur-O-Wal Ladur or Truss Masonry Joint Reinforcement may be considered part of the required minimum horizontal reinforcement. In many cases, the horizontal steel requirement can be satisfied entirely by the use of masonry joint reinforcement. It should be noted; that sufficient steel reinforcement to resist all live and dead loads imposed upon the structure is required.

Even in cases where more than the minimum horizontal steel reinforcement is required, the use of Dur-O-Wal masonry joint reinforcement, as part of this steel, will reduce the number of bond beams required. The use of masonry wall reinforcement in conjunction with wider-spaced bond beams provides the horizontal portion of the required steel for reinforced masonry and decreases the potential for the development of cracks.

Horizontal masonry joint reinforcement is commonly used in masonry construction to control the size and spacing of cracks that may result from temperature and moisture changes. Prefabricated masonry wall reinforcing Corners and Tees are used to bond intersecting walls together.

Most Codes restrict the wire size of masonry joint reinforcement to one-half the joint thickness. This restriction in wire diameter is designed to allow the flow of mortar around the masonry wall reinforcement. Since the typical mortar joint used in masonry construction is 3/8”, this means 3/16” is the maximum wire diameter that should be used for masonry wall reinforcement.

Dur-O-Wal manufactures its Truss and Ladur Masonry Joint Reinforcement in three different weights:• Standard Weight consists of 9 gauge side rods and 9 gauge cross wires.• Extra Heavy Weight consists of 3/16” diameter side rods and 9 gauge cross wires.• Super Heavy Weight consists of 3/16” diameter side rods and 3/16” cross wires.The manufacturing process for the Dur-O-Wal masonry joint reinforcement results in the side wires and cross

wires being resistance welded in the same plane, providing a full cover of mortar at all weld intersections.Dur-O-Wal deforms the side wires of masonry joint reinforcement, to provide additional bonding capacity with

the mortar, by providing small indentations along the length of the side rods. Additional bond strength is gained by the flush resistance welding of cross wires to side rods, forming an additional mechanical anchor at each intersection.

When masonry joint reinforcement is lap spliced for longitudinal continuity, specify that the wires be lapped side by side to avoid a double thickness of wire in the mortar joint. Minimum lap length of side rods should be 6-3/4” for 9 gauge side rods and 8-1/2” for 3/16” diameter side rods.

HORIZONTAL MASONRY JOINT REINFORCEMENTThe longitudinal wires of masonry joint reinforcement used in a CMU backing are required by Code to be fully

embedded in mortar or grout with a minimum exterior cover of 5/8” and a minimum interior cover of 1/2”. To aid the mason in meeting these specified minimum cover requirements, masonry joint reinforcement supplied by Dur-O-Wal measures 2” out-to-out less than the nominal dimension specified.

Minimum horizontal joint reinforcement shall consist of at least two 9 gauge wires spaced not more than 16” on center or bond beam reinforcement of 0.2 square inches spaced not more than 120” apart. It shall also be provided at the bottom and top of wall openings and extend at least 24” past the opening, continuously at structural connected roof and floor levels and within 16” of the top of walls. Reinforced Masonry

The maximum allowable tensile stress in masonry joint reinforcement is 30,000 psi.When anchoring load bearing corner and intersecting tee walls using masonry wall reinforcing, MJR should be

spaced at 8” on center and extend in each direction at least 30”.Interior non-load bearing corner and tee walls shall be anchored at vertical intervals of not more than 16” with

MJR or 1/4” metal mesh galvanized cloth. Other metal ties may be used provided they have an equivalent area of anchorage.Veneer

When Ladur or Tab type Masonry Joint Reinforcement is placed in a CMU backing and used to connect veneer to a backing, it shall be spaced at 16” maximum vertical centers with a minimum cover of 5/8” on each side.


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In Seismic Design Categories E and F, a single 9-gauge wire reinforcement is required to reinforce the veneer. It is spaced at 16” on center vertically and mechanically attached to the MJR with Quake Clips. However, due to problems associated with shipping single wires without damage, Dur-O-Wal recommends the use of DA3200S Seismic Ladur for this condition.Minimum Area Of Steel Required to Satisfy Code

The chart below lists the various CMU nominal thicknesses, the gross wall area for each CMU thickness along with the total area of steel reinforcement required with the minimum amount of horizontal steel required per foot of wall height.

MINIMUM AREA OF HORIZONTAL STEEL REQUIRED TO SATISFY ACI 530-05 CODE REQUIREMENTS

Nominal CMU Thickness 4” 6” 8” 10” 12” 14” 16” 18” 20” 22” 24”

Gross Wall Area per Foot of Wall Height

43.5 sq. in.

67.5 sq. in.

91.5 sq. in

115.5 sq. in.

139.5 sq. in.

163.5 sq. in.

187.5 sq. in.

211.5 sq. in.

235.5 sq. in.

259.5 sq. in.

283.5 sq. in.

Total Area of Steel per Foot of Wall Height

(0.002 x Gross Area)

0.087 sq. in.

0.135 sq. in.

0.183 sq. in.

0.231 sq. in.

0.279 sq. in.

0.327 sq. in.

0.375 sq. in.

0.423 sq. in.

0.471 sq. in.

0.519 sq. in.

0.567 sq. In.

Minimum Horizontal Steel Required per Foot of Wall Height

(0.0007 x Gross Area)

0.030 sq. in.

0.047 sq. in.

0.064 sq. in.

0.081 sq. in.

0.098 sq. in.

0.114 sq. in.

0.131 sq. in.

0.148 sq. in.

0.165 sq. in.

0.182 sq. in.

0.198 sq. in.

NOTES: 1) Total area of steel per ft. = 0.002 x 12” x actual CMU thickness. 2) Horizontal area required per ft. = 0.007 x 12” x actual thickness.

Area Of Steel Provided By Ladur Masonry Joint ReinforcementThe principle application of these charts is to show how intermediate bond beams, usually placed at 48” on center,

may be replaced by the use of Ladur Masonry Joint Reinforcement. The chart below indicates the area of steel provided by Ladur MJR when spaced at 8” or 16” vertical centers. Compare the amount of steel provided by Ladur MJR to the amount of steel required in the above chart.

AREA of STEEL SUPPLIED BY DUR-O-WAL LADUR MASONRY JOINT REINFORCEMENT

Vertical Spacing of MJR

2 - #9 Ga. Side Rods

2 - 3/16” Diameter Side Rods

4 - #9 Ga. Side Rods

4 - 3/16” Diameter Side rods

8” Centers 0.052 sq. in. 0.083 sq. in. 0.104 sq. in. 0.167 sq. in.

16” Centers 0.026 sq. in. 0.042 sq. in. 0.052 sq. in. 0.083 sq. in.

NOTE: Compare area of steel provided to minimum area of steel required per foot of wall height.

When the amount of steel required is not provided by the Ladur Masonry Joint Reinforcement, the chart below indicates the additional reinforcement needed, in the top bond beam, to meet the minimum area of steel required by the ACI 530 Code.

REINFORCEMENT REQUIREMENTS for BOND BEAM at TOP OF CMU WALL

Ladur MJR MJR Spacing

8” Nominal Thickness 12” Nominal Thickness

8’-0” 12’-0” 16’-0” 20’-0” 24’-0” 8’-0” 12’-0” 16’-0” 20’-0” 24’-0”

2 - 9 ga. Side Rods

8” 1 #4 1 #5 1 #5 2 #4 1 #6 1 #6 1 #7 1 #8 2 #7 1 #10

16” 2 #4 1 #7 1 #8 2 #6 2 #7 1 #7 2 #6 2 #7 2 #8 2 #92 - 3/16” Diameter

Side Rods

8” 1 #3 1 #3 1 #3 2 #3 1 #3 1 #3 1 #5 1 #5 1 #6 1 #7

16” 2 #3 1 #5 1 #6 1 #7 2 #5 1 #7 1 #8 2 #7 2 #7 2 #8

NOTE: A minimum of one #3 rebar is shown, even when calculations indicate that Ladur type MJR alone would satisfy the minimum horizontal steel requirements of the ACI 530 Code.

Charts are not provided for the use of Truss Masonry Joint Reinforcement as Dur-O-Wal recommends the use of Ladur MJR in a reinforced masonry wall. The use of Ladur MJR helps to insure that a minimum number of obstructions will be encountered when adding the vertical reinforcing steel and later grouting the cells of the CMU.


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When Dur-O-Wal Ladur Masonry Joint Reinforcement is used as a replacement for horizontal bond beams, there will be an improvement in the overall ductility of the masonry wall because of the closely spaced joint reinforcement.

For a more complete understanding of the requirements for masonry wall reinforcement, the reader is advised to consult a copy of the Building Code Requirements for Masonry Structures (ACI 530-05/ASCE 5-05/TMS 402-05) available from the American Concrete Institute, 38800 Country Club Drive, Farmington Hills, MI 48331 U.S.A. Phone: (248) 848-3700 or www.aci-int.org.

SINGLE WYTHE CONCRETE MASONRY CONSTRUCTION For un-reinforced CMU single wythe walls, Dur-O-Wal recommends the use of either DA3100 Truss or DA3200

Ladur Masonry Joint Reinforcement (MJR). When a single wythe CMU wall is to be vertically reinforced and the cells filled with grout, the use of Truss MJR is not recommended as the cross wires can interfere with the installation of the vertical reinforcing steel and the placement of the grout.

When a single wythe wall is to be reinforced using full height vertical steel, DA3200S Seismic Ladur Masonry Joint Reinforcement is recommended in the face shell.

Dur-O-Wal recommends MJR for use:

• Ladur or Truss as crack control when placed at 16” centers vertically and in conjunction with properly spaced control joints.

• Ladur or Truss as principle reinforcement to resist out-of-plane horizontal bending and in-plane shear.

• Ladur as principle reinforcement to meet horizontal steel requirements in areas of seismic activity.

• Ladur with bond beam steel to meet total horizontal steel requirements in areas of seismic activity.

Bond Beam Bond Beam

Bond Beam

Bond Beam

Bond Beam at 48” Centers

MJR installed at every other

course or at every course as

required per Building Code

and/or calculations.

MJR Method

Bond Beam Method

DA3100 Truss Masonry Joint Reinforcement

DA3200 Ladur Masonry Joint Reinforcement

DA3200S Seismic LadurMasonry Joint Reinforcement


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MULTI-WYTHE CONCRETE MASONRY CONSTRUCTIONEach Wythe Laid at Different Times

For CMU cavity walls having either a clay or concrete veneer and with or without cavity insulation, Dur-O-Wal recommends the use of either DA3600 Ladur-Eye or DA3700 Dur-O-Eye Masonry Joint Reinforcement (MJR). When the CMU wythe is to be vertically reinforced, the use of Dur-O-Eye is not recommended as the cross wires can interfere with the installation of the vertical reinforcing steel and the placement of the grout.

Dur-O-Wal recommends Ladur-Eye or Dur-O-Eye MJR with Pintles for use:• Where the cavities do or do not contain insulation.• Where inner and outer wythes are not laid simultaneously or where the bed joints in the CMU and veneer wythes do not line up at the same elevation; maximum eccentricity between MJR and Pintle is 1-1/4”.• Where Code compliance requires one wall tie for each 1.77 square feet of wall surface. • Veneers wider than a nominal 4” require the use of Seismic Ladur in the veneer course attached to the MJR with Seismic Pintles.

MULTI-WYTHE CONCRETE MASONRY CONSTRUCTIONBoth Wythes Laid at Same Time

When the CMU wythe is to be vertically reinforced, the use of Truss MJR is not recommended as the cross wires can interfere with the installation of the vertical reinforcing steel and the placement of the grout.

Truss Trirod or Double Side Rod MJR is not recommended when the backing is CMU and the veneer is clay brick. This is due to problems that can develop due to the difference in expansion and contraction characteristics of the two materials.

Non-adjustable DA3200TR Ladur Tri Rod or DA3200DSR Ladur Double Side Rod Masonry Joint Reinforcement, installed every 16” can be used as masonry veneer anchors when the bed joints of the CMU and veneer line up and both wythes are laid up at the same time. When bed joints will not line up or the CMU and veneer will be laid at different times, then DA3600 Ladur-Eye, DA3700 Dur-O-Eye DA3600S Heavy Duty Seismic Ladur-Eye or DA3700S Seismic Dur-O-Eye with appropriate Pintles should be installed at 16” centers horizontally and vertically.

Above recommendations are:• Where Code compliance requires one wall tie for each 1.77 square feet of wall surface. • With CMU veneers or clay brick veneers wider than a nominal 4“ width specify Double Side Rod Masonry Wall Reinforcement.

MASONRY VENEER ANCHORS As anchors connect masonry veneer to a structural backing, the proper anchor selection is important for long-

term durability of a cavity wall structure. When insulation is to be installed in the cavity, the designer should select and specify anchors that will contact the backing in order to keep any compression loads transferred through the masonry anchors from damaging the insulation. Typically, the veneer connections must be flexible in order to accommodate in-plane differential movement between the veneer and backing, yet resist the out-of-plane compression and tension loads.

DA3700 Dur-O-Eye with Pintles Masonry Joint Reinforcement

DA3600 Ladur-Eye with Pintles Masonry Joint Reinforcement

DA3200TR Ladur Trirod Masonry Joint Reinforcement

DA3200DSR Ladur Double Side RodMasonry Joint Reinforcement


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Proper performance of a masonry veneer anchor is directly related to the amount of embedment provided for in its selection. The ACI 530 Code requires an anchor to have a minimum embedment into the veneer mortar joint of 1-1/2” with at least 5/8” mortar cover from the outside face of the veneer.

Many designers are presently specifying adjustable, “two-piece” anchors as these anchors are able to adjust to varying field coursing conditions and can be attached to all types of structural backings. All masonry veneer anchors should be fastened to the backing with fasteners produced from similar metals and coatings to reduce the possibility of galvanic corrosion occurring.

Dur-O-Wal does not recommend and most Codes have eliminated the use of anchors with a “drip notch”, as the notch greatly reduces the load-carrying capacity of an anchor.

When the cavity width between wythes exceeds 4-1/2” the ACI 530 Code requires a detailed wall tie analysis be made to determine proper anchor spacing.

When veneer is laid in other than a running bond pattern, it shall be reinforced with at least one 9 gauge wire spaced at 18” on center vertically.

SPACING – MASONRY VENEER ANCHORSSEISMIC DESIGN CATEGORIES A, B and C

For 9 gauge adjustable two-piece anchors and 22 gauge corrugated sheet metal anchors, provide one anchor for each 2.67 square feet of wall area.

For other anchors, provide at least one anchor for each 3.50 square feet of wall area. The maximum spacing for anchors is 32” horizontally and 18” vertically.

Provide additional anchors around openings larger than 16” in either direction. Space anchors around perimeter of opening at 36” maximum centers and within 12” of the opening.SEISMIC DESIGN CATEGORIES D

For 9 gauge adjustable two-piece anchors and 22 gauge corrugated sheet metal anchors, provide one anchor for each 2.00 square feet of wall area.

For other anchors, provide at least one anchor for each 2.63 square feet of wall area. The maximum spacing for anchors is 32” horizontally and 18” vertically.

Provide additional anchors around openings larger than 16” in either direction. Space anchors around perimeter of opening at 36” maximum centers and within 12” of the opening.SEISMIC CATEGORIES E and F

Same as Seismic Design Category D except requires a 9 gauge DA8706 Masonry Joint Reinforcement spaced at a maximum of 18” on center vertically in the veneer. The MJR is to be mechanically attached using a seismic veneer anchor.

Due to the difficulty in shipping DA8706 MJR without it being damaged in shipment, Dur-O-Wal recommends the use of DA3200S Seismic Ladur Masonry Joint Reinforcement instead. HIGH WIND AREAS

The following apply where the basic wind speed exceeds 110 mph but does not exceed 130 mph and the mean roof height of the structure is equal to or less than 60 feet.

Reduce the maximum wall area supported by each anchor to 70% of that specified from the appropriate Seismic Design Category listed above.

Space anchors at a maximum of 18” horizontally and vertically.Provide additional anchors around openings larger than 16” in either direction. Space anchors around openings

at 24” maximum centers. Place anchors within 12” of opening.


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DA100 Dovetail Anchor SlotDA131 Seismic Dovetail Anchor

To support load, the DA100 Anchor Slot must be properly installed in concrete, as the slot if attached directly to the outside surface of the concrete will not provide any anchoring strength.

Fasten lengths of DA100 Dovetail Anchor Slot against the inside of concrete formwork, prior to placement of concrete. Dur-O-Wal recommends fastening the slot to the formwork on 12” centers or less. Once the formwork is stripped and the veneer is to be installed, dovetail anchors are inserted into the slot and adjusted vertically to fit into the bed joints of the masonry veneer.

The DA131 anchor is fabricated from 12, 14 or 16 gauge material. It is designed for use with the DA100 Dovetail Slot for anchoring veneer to precast or poured-in-place concrete and can be used in all Seismic Design Categories. Raised “lugs” on the end of the anchor are designed to engage a 9-gauge veneer reinforcing wire, as required in Seismic Design Categories E and F.

DA131 Anchor can be used as a normal veneer anchor, without veneer reinforcement, as the notches and raised “lugs” are bonded securely into the mortar bed.

DA100 Dovetail Slot DA131 Seismic Dovetail Anchor

Cavity Ultimate Compression Ultimate Tension

Up to 3” 1,192 lbs. 664 lbs.

DA100 Dovetail Anchor SlotDA720 Series Dovetail Triangular Tie

Dovetail Anchor Slot and Triangular Tie have been designed to anchor masonry veneer to precast or poured-in-place concrete where the DA100 Dovetail Anchor Slot has been embedded in the concrete by the precaster or general contractor. This system provides out-of-plane tension and compression restraint, yet does not impose restraint on in-plane movement.

The DA100 slot is available in mill galvanized 22, 24 or 26 gauge carbon steel or Type 304 stainless steel. Anchor slot, due to its shape is not available hot dipped galvanized. It is furnished in standard lengths of 10’-0” and is foam filled to prevent concrete from filling the slot during the placement of concrete.

If Dovetail Anchor Slot has been left out of the concrete, Dur-O-Wal recommends attaching the DA720 Dovetail Triangular Tie directly to the backing. Use the DA5410 or DA5610 Expansion Anchor, depending on backing material.

DA100 Dovetail Slot DA720 Series Dovetail Triangular Tie


1” 554 lbs. 713 lbs.3” 386 lbs. 713 lbs.

The DA720 Series Triangular Ties are 3/16” diameter and available in 3-1/2”, 4-1/2”, 5-1/2”, 7-1/2” and 9-1/2” lengths. Length does not include the 12-gauge dovetail. Triangular ties are available furnished with a mill galvanized or HDG finish or produced entirely from Type 304 stainless steel.


10

DA210X Veneer Anchor Screw-On Plate DA700 Series Triangular Ties

This system can be used with or without rigid foam insulation in the cavity as the plate has legs intended to pierce the rigid foam insulation and/or rigid fiberglass/gypsum board sheathing coming to bear directly against a wood or metal stud. The 14 gauge thick plate has legs sized to accommodate 5/8”, 3/4”, 1”, 1-1/2”, 2”, 2-1/2” and 3” combined thicknesses of insulation and sheathing.

The DA210X Screw-On Plate and a DA700 Series Triangular Tie are combined to form a two part adjustable veneer anchoring system that provides resistance to out-of-plane loads. Triangular ties do not provide resistance to in-plane loading. This system is designed to connect masonry veneer to wood or metal stud framed structural backings.

Depending on the type of studs used to construct the backing, attachment of the plate is by use of two DA807 sheet metal screws, DA808 wood screws or DA995 stainless steel sheet metal screws.

Plate design provides 3-3/4” of vertical tie adjustment to meet variations in the masonry coursing. The plate and triangular tie are available HDG after fabrication with Type 304 stainless steel on special order.Other styles of screw-on plates are available.

DA210X VENEER ANCHOR SCREW-ON PLATE DA700 SERIES TRIANGULAR TIES

Metal Stud

DA807 Metal Stud Veneer Screw

Deflection at 100 lbs. Stiffness

Ultimate Mechanical

Capacity

16 ga.#12 0.033” 3,025 lbs. per inch 1,096 lbs. tension

#10 0.018” 5,550 lbs. per inch 908 lbs. tension

18 ga.#12 0.033” 3,025 lbs. per inch 612 lbs. tension

#10 0.018” 5,550 lbs. per inch 491 lbs. tension

20 ga. #12 0.029” 3,450 lbs. per inch 322 lbs. tension

16 ga.#12 0.060” 1,650 lbs. per inch 891 lbs. compression

#10 0.028” 3,575 lbs. per inch 882 lbs. compression

18 ga.#12 0.064” 1,550 lbs. per inch 939 lbs. compression

#10 0.025” 4,000 lbs. per inch 1,060 lbs compression

Notes:1) All tension and compression tests conducted with the Triangular Tie centered on the plate.2) All compression tests based on a 4” cavity width.3) Above values are “worst case” averages for the various leg lengths. 4) #10 screws used in tests utilizing DensGlass sheathing with rigid foam insulation.5) #12 screws used in tests utilizing DensGlass sheathing without insulation.


11

DA213 Veneer Anchor PlateDA213 PintleDA213QT Lite-Duty Seismic PintleDA213 Seismic Pintle

Depending on design requirements, this system can consist of the DA213 Veneer Anchor Plate, a DA213 Pintle, DA213QT Lite-Duty Seismic Pintle or a DA213 Seismic Pintle. All are available either HDG after fabrication or fabricated from Type 304 stainless steel.

DA213 Veneer Anchor Plate DA213 Veneer Anchor Plate DA213 Veneer Anchor Plate DA213 Pintle DA213QT Lite-Duty Seismic Pintle DA213S Seismic PintleRecommended for use in cavity wall construction, with or without cavity insulation, securely anchoring veneer

to the backing. The DA213 Veneer Anchor Plate, complete with stiffening gussets for minimum plate deflection, projects from the backing to accommodate rigid insulation or wider air cavities. Requires two screws or one expansion anchor for attachment to backing, depending on backing materials.

With the proper anchor plate selection, the pintle legs are designed to hold cavity insulation against the structural backing. Anchors are available for insulation thicknesses that range from 0” to 3” in 1/2” increments. Minimum cavity width required is 3/4”.

The pintles are designed for up to 1-1/4” eccentricity between the plate and pintle. Both seismic pintles are intended to engage either the DA3200S Seismic Ladur or DA8706 Deformed Pencil Rod. Due to the difficulties in shipping the Pencil Rod without having it damaged in transit, the use of the DA3200S Seismic Ladur is recommended, when veneer seismic reinforcement is required.

DA213 VENEER ANCHOR PLATE ASSEMBLY DA5213 VENEER ANCHOR PLATE ASSEMBLY WITH EXPANSION ANCHOR

Veneer Anchor System Eccentricity Ultimate Tension or Compression

Deflection at 100 lbs. Stiffness

DA213S Pintle, 11 ga. and DA213 Veneer Anchor

Plate, 12 ga.

0” 1,256 lbs. 0.013” 7,820 lbs. per inch

3/4” 380 lbs. 0.024” 4,120 lbs. per inch

1 ¼” 360 lbs. 0.047” 2,110 lbs. per inch

DA213S Pintle, 12 ga. and DA213 Veneer Anchor

Plate, 14 ga.

0” 730 lbs. 0.015” 6,666 lbs. per inch3/4” 240 lbs. 0.037” 2,700 lbs. per inch

1-1/4” 180 lbs. 0.170” 580 lbs. per inch

DA213 Pintle, 3/16” Wire and DA213 Veneer Anchor

Plate, 12 ga.

0” 540 lbs. 0.046” 2,174 lbs. per inch3/4” 200 lbs. 0.093” 1,075 lbs. per inch

1-1/4” 120 lbs. 0.194” 515 lbs. per inchNotes:1) Wire pintle has an 800 lbs. ultimate pullout/push out from full bed joint with 1-1/2” mortar embedment. 2) 11 ga. plate has an ultimate pullout/push out from bed joint of 1,160 lbs. without seismic reinforcing.3) 11 ga. plate has an ultimate pullout/push out from bed joint of 1,590 lbs. with 9 ga. continuous seismic reinforcement.


12

DA411 Wall Top Stabilization AnchorA mechanical anchoring system designed to resist out-of-plane loads at the top of masonry walls, consisting of

a 3/8” diameter x 6” long steel dowel resistance welded to a 12 gauge carbon steel plate. The anchor assembly is HDG after fabrication to resist corrosion. Assembly is available, on special order, fabricated from Type 304 stainless steel.

Wall Top Stabilization Anchors can be welded or bolted to the bottom of steel beams, fastened with screws, expansion anchors or epoxied to the underneath side of a concrete ceiling/floor or beam. The anchor plate is normally installed perpendicular to the length of the wall, except in cases where the wall thickness is less than the length of the plate.

DA411 Wall Top Stabilization Anchor

Ultimate Shear Capacity Clearance Between Attachment Point and Top of CMU

900 lbs. 0.207”300 lbs. 0.621”200 lbs. 0.932”100 lbs. 1.864”

Slots in the anchoring plate provide field adjustment of the assembly. The dowel, sleeved with a plastic tube, is normally bedded in mortar within the groove of a sash CMU. A plastic expansion tube prevents bonding of the dowel to mortar and a compressible foam fill at the end of the sleeve allows for vertical deflections.

For installation, lay a standard sash CMU at the top of the wall, install the anchor so that the anchoring pin is in the sash groove, “butter” the end, then lay another CMU sash unit against the pin. This mortars the anchoring pin into a slot that measures 5/8” wide x 1-1/2” long. The pin can also be installed in the hollow core of a CMU, although a method will need to be devised to fill that core with grout or mortar.

DA431 Seismic Veneer Anchor This anchor designed to anchor masonry veneer to a wood or steel stud, concrete, brick

or CMU structural backing. Has shear “lugs” to engage a masonry joint reinforcement, either DA3200S Seismic Ladur or DA8706 Pencil Rod.

Anchor requires a minimum air cavity of 1/2” and provides for 3/4” of adjustment for coursing match up.

Available either Hot Dip Galvanized or Stainless Steel in 14 or 12 gage thickness x 1 1/4” wide x 3 1/2”, 4 1/2” or 5 1/2” lengths.

Minimum ultimate tensile capacity of anchor is 850 lbs. Method of attachment may reduce the ultimate capacity.

DA601 Column AnchorsFor anchoring CMU to the flanges of a structural steel column when CMU is laid parallel to the flange. Designed

to hook onto the flanges of a structural steel column, eliminating the need for welding, yet still securely anchor CMU. Pairs of anchors are required, one left and one right.

The standard DA601 anchor is 1/8” thick x 2” wide with a 1-1/2” right angle bend at one end and a 5/8” x 1” notch located 1” from the other end of the anchor. Length will vary as specified. Can be furnished mill galvanized, hot dipped galvanized or from Type 304 stainless steel. Other styles available. For quoting and/or fabrication, a detailed and dimensioned sketch is required.

DA601 Column AnchorsMaximum Ultimate Tension

MaximumUltimate Shear

Ultimate Compression

1” Cavity 4” Cavity3,420 lbs. 1,584 lbs. 9,863 lbs. 6,373 lbs.

Note: Values listed are per pair of anchors.


13

DA709 Column Anchor Weld-OnDA700 Series Triangular Ties

This system is designed to anchor masonry veneer or CMU to structural steel columns. It furnishes resistance to out-of-plane loads, yet does not restrict in-place loads. At locations specified, weld a DA709 Column Weld-On to the structural column.

DA709 Column Weld-On DA700 Series Triangular Ties


1” 1,159 lbs. 816 lbs.2” 702 lbs. 816 lbs.

DA801 Adjustable Speed Set AnchorQuickly attach masonry veneer to backing using a single

fastener. Not recommended for use where insulation is specified in cavity.

The attachment plate measures 1/2” deep x 1-1/8” wide x 3” tall x 14 gauge thickness. The slot allows for up to 1-1/4” coursing adjustment as may be required.

Anchor ships with a 3/16” diameter x 3” or 4” long wire tie as specified. Use the 3” long tie with 3/4” to 1-1/4” wide cavities and the 4” tie for 3/4” to 2-1/4” cavities.

Available either mill galvanized, HDG after fabrication or from Type 304 stainless steel as required.

DA801 Adjustable Speed Set Anchor

Eccentricity Ultimate Tension Stiffness

1/4” 600 lbs. 2,174 lbs. per inch

1” 375 lbs. 1,786 lbs. per inch

1-1/4” 200 lbs. 1,250 lbs. per inch

Notes:1) Pullout full mortar bed = 800 lbs.2) Ultimate load is based on the 695 pounds strength of a #10 screw in a 16 gauge metal stud.


14

DA918 Series Channel Anchor Triangular Tie

DA901 Channel Anchor Slot

DA913 Channel Anchor

Note: Value of DA931 similar to DA131 Seismic Dovetail Anchor

DA931

DA918

DA901 Channel Anchor SlotDA913 Channel Anchor DA918 Channel Anchor Triangular Tie DA931 Seismic Channel Anchor

This anchor system is very versatile and can be used to anchor masonry to concrete, CMU, steel or existing construction. The 16 gauge DA901 Channel Anchor Slot can be fastened to the backing in several ways, depending on the backing materials specified. One may weld to structural steel or use 1/4”-20 expansion anchor and contractor supplied washers with either concrete or CMU backings. Other styles and lengths of channel anchors are available.

Slots provide up to 5-1/2” of anchor adjustment.

DA913 Channel Anchor can be furnished from various thicknesses and width of material. Minimum width is 1-1/4” with a minimum 3/4” long right angle bend.

The DA918 Channel Anchor Triangular Tie is fabricated with a 3/16” diameter x 3-1/2”, 4-1/2”, 5-1/2” or 7-1/2” long Triangular Tie securely fastened to a 12 gauge “Tee” connector tail. Furnished mill galvanized, hot dipped galvanized or from Type 304 stainless steel as required. Other types and sizes are available.

The DA903 Channel Anchor Slot is recommended for use with wood or steel stud framed construction.Other styles and lengths of Channel anchor Slot are available.

DA901 Channel Anchor Slot DA913 Seismic Channel Anchor

DA918 Channel Anchor Triangular Tie

Anchor Slot Material Ultimate Tension

Cavity Widths

2” 4”

DA918 Channel Anchor Triangular Tie, 3/16” diameter wire with 12 gauge Clip 11 ga. 832 lbs. 271 lbs. 309 lbs.

DA913 Channel Anchor, 16-gauge x 1-1/4” Turned Down

Strap Anchor11 ga. 950 lbs. Not

AvailableNot

Available

DA913 Channel Anchor, 16-gauge x 1-1/4” Turned Down

Strap Anchor16 ga. 670 lbs. Not

AvailableNot

Available


15

DA2200 Joint Stabilization AnchorThis anchor is designed primarily to resist shear forces from lateral loads. It is the solution for bridging vertical expansion joints, providing stability to the adjoining walls and allowing for longitudinal expansion movement.

In addition, anchors can be field bent to 90° with one leg mechanically fastened to a vertical wall or column. Embedding the other leg in the bed joint of the adjoining wall allows for expansion movement but lateral movement is restricted for the intersecting walls. Anchor can be welded to steel columns if required.

The anchor consists of two specially designed mill galvanized steel plates with integrally formed upturned edge sleeves. The plates are connected with two lubricated 8 gauge mill galvanized wires that slide inside the sleeved edges of the plates. Available on special order completely fabricated from stainless steel material. Sliding action between the wires and sleeves allows longitudinal movement providing for full utilization of the expansion joint. A plastic spacer separates the two plates to insure expansion can take place.

Brick to Brick Brick to CMU Brick to Structural Steel

The ultimate shear capacity is 305 lbs. based on a 5/8” wide joint. As the shear capacity is a direct function of the joint width, it will have a higher capacity when the anchor is installed across a 3/8” joint and a lower capacity across a 3/4” joint. The minimum required strength of mortar is 1,800 psi

DA5213 Veneer Anchor Plate Assembly with Expansion AnchorSame as DA213, except Veneer Anchor Plate comes preassembled with one 1/4” expansion anchor. Expansion anchor requires a 7/16” diameter x 2-1/4” deep hole to be drilled into the backing prior to installation. For HDG anchors, the expansion anchor consists of a zinc plated, 1/4”-20 NC threaded hex head bolt and washer. For stainless steel anchors, the expansion anchor uses a stainless steel bolt and washer. In both cases, the expander sleeve and cone is manufactured from corrosion resistant brass. Tap anchor into hole and tighten to between 50 and 100 inch-pounds.

DA5801 Adjustable Speed Set Anchor with Expansion AnchorDesigned especially to anchor veneer to a concrete or CMU backing. Same as DA801 except comes preassembled with one 1/4” expansion anchor. Expansion anchor requires a 7/16” diameter x 2-1/4” deep hole to be drilled into the backing prior to installation. For HDG anchors, the expansion anchor consists of a zinc plated, 1/4”-20 NC threaded hex head bolt and washer. For stainless steel anchors, the expansion anchor uses a stainless steel bolt and washer. In both cases, the expander sleeve and cone is manufactured from corrosion resistant brass. To install, tap anchor into hole and tighten to between 50 and 100 inch-pounds.


16

DA5431 Seismic Veneer Anchor SystemSame as DA431 Seismic Veneer Anchor except ships preassembled with an expansion anchor. Expansion anchor requires a 7/16” diameter x 2” to 2 ¼” deep hole drilled into concrete backing or a 7/16” diameter hole through the face shell of a hollow CMU.

For HDG anchors, the expansion anchor consist of zinc plated, ¼” -20 NC threaded head nut and washer. For stainless steel anchors, the expansion anchor uses a stainless steel bolt and washer. In both cases, the expander sleeve and cone are manufactured from corrosion resistant brass.

To install, tap anchor in to position and tighten to between 50 and 100 inch-pounds. Minimum ultimate tensile capacity of anchor system is 850 lbs.

DA8800 OCM Masonry Rebar AnchorThis is a mechanical rebar anchor system consisting of a mechanical expansion anchor swaged to either a #4 or

a #5 grade 40 reinforcing bar. Expansion anchor portion is zinc plated for corrosion resistance.This rebar anchor is used to tie vertical reinforcing steel in masonry construction to a poured-in-place concrete

foundation (4,000 psi compressive strength). Jobsites are not restricted by temperature when this system is specified, which means no delays in laying CMU due to waiting on installation of rebars.

Specify a 11/16” diameter drill bit x 2-1/2” minimum depth hole for the #4 and a 27/32” diameter drill bit x 3” minimum depth hole for the #5 system.

Installation instructions:• Drill hole using carbide bit of specified diameter.• Drill hole to specified depth.• Remove cement fines or dust using compressed air.• Insert appropriate anchor into hole.• Strike the top of the rebar with a hammer blow of sufficient force to expand expansion anchor into the drilled hole

DA8800 OCM Anchor

Rebar Anchor

Ultimate Tension Capacity

Ultimate Shear

Capacity

#4 7,533 lbs. 6,865 lbs.#5 11,233 lbs. 7,659 lbs.


17

FASTENERSDA807 Steel Stud Veneer Screw

The DA 807 Steel Stud Veneer Screw is a metal-to-metal, self-drilling, self tapping screw designed to fasten veneer anchors to a metal stud backing without drilling a pilot hole. The screws are coated with a propri etary corrosion resistant coating and are available in two sizes, #10-16 x 1-1/2” long or #12-14 x 2” long. The 1-1/2” long screw is available with or without a EPDM (ethylene propylene diene monomer) Rubber washer under the hex washer head. The 2” length is available ONLY with a EPDM washer. The EPDM washer provides resistance to water pen etration, around the screw into the backup. Other sizes of screws are available.

DA807 Withdrawal Capacity

Size Steel Stud Ultimate Capacity

#10-16

25 ga. 124 lbs.20 ga. 299 lbs.18 ga. 499 lbs.16 ga. 708 lbs.14 ga. 967 lbs.12 ga. 1,474 lbs.

#12-14

25 ga. 142 lbs.20 ga. 341 lbs.18 ga. 551 lbs.16 ga. 757 lbs.14 ga. 1,063 lbs.12 ga. 1,631 lbs.

DA808 Wood Stud Screw - Corrosion ProtectedThe DA 808 Wood Stud Screw is designed to secure veneer anchors to wood studs. This is a self-tapping screw

and does not require drilling of a pilot hole. Screws are coated with a proprietary corrosion resistant coating and are fur nished with a #9 Phillips Head Screw in 1-5/8” or 2-1/4” lengths. Maximum material attachment range for the 1 5/8” long screw is 1-1/8” and 1-3/4” for the 2-1/4” long screw. Other sizes of screws are available.

DA808 Withdrawal Capacity

Embedment Ultimate Capacity1/2” 223 lbs.3/4” 312 lbs.1” 555 lbs.

1-1/4” 676 lbs.

A995 Stainless Steel Screw - Type 300 SeriesThe Dur-O-Wal A995 Stainless Steel Screw com bines the corrosion resis tance of an austenitic 300 series stainless

head and threaded shank with a hard ened carbon steel point for self-drilling installation. This screw has a 5/16” AF Hex Washer Head and integral drill point and is engineered to drill the optimum hole size for efficient thread forming in the metal stud with optimized pullout values. These screws install like carbon steel screws, yet provide the corrosion resistance of a true stainless steel self-drilling screw.

When selecting a stainless steel fastener where minimizing corrosion is the goal, specify the A995 Stainless Steel Screw as it offers dramatically bet ter corrosion resistance with its stainless steel composi tion. The welded drill point makes this screw more costly, but the corrosion resistance benefits greatly offset the increased cost.

A995 Withdrawal Capacity

Steel Stud Ultimate Capacity

20 ga. 315 lbs.18 ga. 472 lbs.16 ga. 787 lbs.

NOTE: Withdrawal capacity based on the screw penetrating the metal stud by at least 3 thread pitches.

NOTE: Withdrawal capacity based on a screw embedded in a Spruce-Pine-Fir lumber species, #2 grade 2x4 stud.

NOTE: Withdrawal capacity based on screw having threads penetrating beyond the steel stud by at least 3 thread pitches.


18

DA5410 Expansion AnchorThe Dur-O-Wal expansion anchor consists of a 1/4”-20 UNC

threaded stainless steel bolt and washer, a brass expansion sleeve and expander cone. The anchor provides a posi tive mechanical lock in the backing due to the expansion of the brass expansion sleeve.

To install these anchors, drill a 7/16” diameter hole 2” to 2-1/4” deep into the backing. Remove any fines left from drilling the hole, then tap the expansion anchor into the drilled hole and tighten the anchor bolt to between 50 and 100 inch-pounds.

DA5610 Expansion AnchorThis expansion anchor is identical to the DA5410 anchor with the exception that the 1/4”-20 bolt and washer are

elector-galvanized.

DA5410 or DA5610 Expansion Anchors

DA5410 or DA5610 Expansion Anchors

MaterialAverage Ultimate Tension

Compressive Strength

Hole Diameter

Minimum Embedment

DepthBrick 1,348 lbs. 7,700 psi 7/16” 1-5/8”Brick 2,062 lbs. 11,000 psi 7/16” 1-5/8”

CMU, Hollow 1,385 lbs. 1,385 psi 7/16” 1-1/4”

CMU, Grouted Cells 2,038 lbs. 2,038 lbs. 7/16” 2”

Concrete 2,169 lbs. 3,500 psi 7/16” 2”

Mortar Joint, 9/16” 1,216 lbs. 962 psi 7/16” 1-5/8”

Mortar Joint, 9/16” 1,321 lbs. 1,450 psi 7/16” 1-5/8”

NOTE: Tension capacity based on material having attained a compressive strength equal to or greater than that listed.


19

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I

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Stone AnchorsStone Anchors are designed to anchor stone

panels to a backing. There are no “standard” dimensions and all stone anchor quotes and fabrication are based on receiving sketches contain-ing detailed dimensions and material specifications.

Methods of attachment can be by using Dovetail Anchor Slot, Channel Anchor Slot or by direct attachment to the backing.

Dur-O-Wal can fabricate stone anchors using 16, 14 or 12 gauge, 3/16”, 1/4”, 3/8” or 1/2” thicknesses and either plain Uncoated, mill galvanized or HDG carbon steel or stainless steel.

DA339

DA336

DA337

DA338

DA334

DA335

DA331

DA332

DA333

DA303

DA304

DA305

DA306

DA307

DA308

DA309

DA301U

DA301Z

DA302

DA101

DA102

DA911

DA913

DA914

DA917

DA103

DA104

DA201

DA202

DA203

DA204

DA205


20

FOR ADDITIONAL DUR-O-WAL BROCHURESFor additional information on Dur-O-Wal masonry accessories, please request a free copy of the following

brochures: Masonry Products Catalog, Seismic Products Catalog or Masonry Repair Handbook.

Individual Product Submittal Sheets are available upon request.

SAFETY INFORMATIONDUR-O-WAL masonry products are intended for use by trained, qualified and experienced workers only. Misuse

or lack of supervision and/or inspection can contribute to property damage, serious accidents or deaths. Any application other than those shown in this publication should be carefully tested before use.

The values listed in this brochure are ultimate values. The user of these DUR-O-WAL products must evaluate the product application, determine the appropriate design load and control all field conditions to prevent applications of loads in excess of the design load. The data displayed in this publication are a combination of actual testing and/or other industry sources.

SHOP OR FIELD MODIFICATIONWelding can compromise the load value of a product and lead to hazardous situations. Knowledge of materials,

heat-treating and welding procedures is necessary for proper welding. Consult a local welding supply dealer for assistance in determining required welding procedures.

Since DUR-O-WAL cannot control workmanship or conditions in which modifications are done, DUR-O-WAL cannot be responsible for any product altered in the field.

INTERCHANGEABILITYMany masonry accessory products that DUR-O-WAL manufactures are designed as part of a system. DUR-O-WAL

strongly discourages efforts to interchange products supplied by other manufacturers with components supplied by DUR-O-WAL. When used properly, and in accordance with published instructions, DUR-O-WAL products have proven to be among the best designed and safest in the industry. Used improperly or with incompatible components supplied by other manufac turers, DUR-O-WAL products or systems may be rendered ineffective and/or unsafe.

DESIGN CHANGESDUR-O-WAL Masonry Accessories reserves the right to change product designs, capacities and product dimensions at any time without prior notice.

GENERAL WARRANTYSeller makes no warranty of any kind, except that the goods sold under this agreement shall be of the standard

quality of the seller, and buyer assumes all risk and liability resulting from the use of the goods, whether used singly or in combination with other goods. Seller neither assumes nor authorizes any person to assume for seller any other liability in conjunction with the sale or use of the goods sold, and there is no oral agreement or warranty collateral to or affecting this transaction.

GENERAL DISCLAIMERThe information contained in this publication does not constitute a professional opinion or judgment. Use of this

information should not be used as a substitute for competent profes sional determinations.Each masonry project is unique and the appropriate use of these products is the responsibility of the engineers,

architects and other professionals who are familiar with the specific requirements of the project. For a more complete understanding of the requirements for masonry wall reinforcement, the reader is advised to consult a copy of the Building Code Requirements for Masonry Structures (ACI 530-05/ASCE 5-05/TMS 402-05) available from the American Concrete Institute, 38800 Country Club Drive, Farmington Hills, MI 48331 U.S.A., Phone: (248) 848-3700 or www.aci-int.org.

Dur-O-Wal Customer Service625 Crane Street • Aurora, IL 60505 • Phone: 800-323-0090

1401 Meadowcraft • Birmingham, AL 35215 • Phone: 800-821-9296

Dur-O-Wal Technical Service7777 Washington Village Drive • Dayton, OH 45459 • Phone: 877-632-9866

dur-o-wal.com • E-Mail: [email protected]

21

Notes & Sketches

22

Notes & Sketches

Inside Back Cover intentionally left blank

We have the most complete dealer network in North America. For the dealer nearest your project, simply call the office in your region.

B U I L D I N G S T R E N G T H

d A y T o N s U p E r I o r C o r p o r A T I o N7 7 7 7 w A S H I N G T O N v I L L A G E D R I v E , S U I T E 1 3 0

d A y T o N , o H 4 5 4 5 9P H O N E : 9 3 7 - 4 2 8 . 6 3 6 0

T O L L F R E E : 8 7 7 - 6 3 2 . 9 8 6 6F A x : 7 7 5 - 2 4 6 . 7 0 2 0

d A y T o N s U p E r I o r . C o m

GREAT PLAINS DISTRICTKansas City4226 Kansas AvenueKansas City, KS 661061-877-416-3439

ELK GROVE VILLAGE

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