Masonry Magazine September 2012 Page. 20
ANCHORS, CONNECTORS, AND FASTENERS
Masonry to masonry:
THE CODE REQUIRES that masonry walls consisting of two or more wythes separated by an air space must be connected by wall ties. Nine-gage wire ties are spaced one anchor every 2.67 square feet, and 3/16-inch wire ties are spaced one anchor every 4.5 square feet. The maximum spacing is 36 inches horizontally and 24 inches vertically. Multiwythe walls designed for composite action and not bonded by headers typically are connected with rectangular ties, Z-Type ties or wire reinforcement. Z-Type wire ties must have the cells grouted solid. These anchors can be used in non-composite walls along with adjustable anchors.
Z-Type and Rectangular Type
Wire Ties
4-Wire Joint Reinforcement
The adjustable anchor requirements differ in that the maximum horizontal spacing is reduced to one anchor every 1.77 square feet, and the vertical spacing to a maximum of 16 inches. The maximum misalignment of bed joints is 1.25 inch, the clearance between the connecting parts cannot exceed 1/16 inch and the pintle ties must be 3/16 inch diameter.
Truss-type wall reinforcement is not allowed in non-composite walls, because it restricts in-plane differential movement between wythes.
Intersecting walls:
INTERSECTING WALLS REQUIRE a U or Z Type Rigid Steel anchor ½ inch thick x 1.5 inch wide x 24 inches o.d., with two-inch bends. These are to be placed a maximum of 48 inches, and all cells above and below the anchor are to be grouted.
ADVANTAGES
• Simple Economical Reliable Results
TRICO EZClip
MASONRY PRODUCTS
The Weld Plate Positioning Clip
Block
Mortar
EZClip
Plate
EZClip
Mortar
Block
• EASY INSTALL Just mortar and slide on clip.
• SELF ALIGNING Positions weld plate flush wiblock front automatically.
• SELF ADJUSTING Flexible to fit most standard block wall thickness.
• OUT OF THE WAY Fits flush to wall, will not snag clothes or equipment.
REMOVABLE FRONT Just cut with trowel or chisel edge.
INEXPENSIVE Low cost per clip, no adhesive or wires to buy or lose.