Masonry Magazine September 2012 Page. 21
Many years ago, some masonry wall ties incorporated a drip bend in the middle of the cavity to allow moisture to migrate to the center and drip down into the cavity. The drip greatly reduced the anchor strength so any and all anchors with drips have been eliminated for use by the code.
The code also limits the cavity to 4.5 inches to assure adequate performance. Ties in larger cavities must be designed to resist loads, based on rational analysis taking into account buckling, tension, pullout and load distribution.
Brick veneers
THE BACKING SYSTEM of exterior veneer must be designed and detailed to resist water penetration. The exterior sheathing must be covered with a water-resistant membrane, unless the sheathing is water resistant and the joints are sealed.
Flashing and weep systems in exterior veneer must resist water penetration into the building interior. Weepholes must be at least 3/16-inch in diameter and spaced less than 33 inches on center.
Anchor finishes for masonry and veneer walls: ANCHORS IN ALL EXTERIOR WALLS and any interior walls exposed to a mean relative humidity exceeding 75 percent must be Hotdip Galvanized After Fabrication or Stainless Steel. For all other cases, anchors may be Mill Galvanized, Hotdip Galvanized After Fabrication or Stainless Steel.
Pos-Hie VENEER ANCHORING SOLUTIONS
Original Pos-Tiel Install the Original Pos-I-Tie into the backup.
Thermal Clip Insert Pos--Tie Thermal Clip onto the head of the Original Pos--Tie.
Close both sides of the Pos--Tie Thermal Clip until they SNAP!
Made Entirely in the USA THERMAL BREAK IS A SNAP Combine the time-tested features of the Original Pos-I-Tie® veneer anchoring system with the all new Pos-I-Tie® Thermal Clip to create a thermal break in a SNAP! EASY EFFECTIVE INNOVATIVE
Place Pintle Wire Tie into the eyes of the Pos-4-Tie Thermal Clip HECKMANN BUILDING PRODUCTS ING www.heckmannanchors.com info@heckmannanchors.com (800) 621-4140
www.masonrymagazine.com READER SERVICE #221 September 2012 MASONRY 19