Masonry Magazine May 2012 Page. 34
CONNECTORS, ANCHORS AND FASTENERS
DryFix ties are flexible to permit normal masonry movement and are designed to shed water in cavity construction.
existing masonry to be fully concealed once installed. Because it's generally installed into the existing masonry, expensive and time-consuming tear down and rebuild are avoided. Visual aesthetics of the structure are retained, which made the system a good candidate for The Broderick Tower exterior restoration project.
The slim profile DryFix remedial ties are precision engineered from 10mm austenitic grade (304) stainless steel. The formed stainless-steel wires offer a typical 0.2 percent proof stress of 500N/mm². But after the cold-forming manufacturing process, which creates the helical hi-fin design, this more than doubles to around 1100N/mm². This means that, with its relatively small diameter, the system provides substantial tensile properties to the masonry.
Additionally, DryFix ties may be used in hollow materials and close to edges. They are sufficiently flexible to permit normal masonry movement, are designed to shed water in cavity construction as well as provide strong, reliable axial restraint in both tension and compression.
The cornerstone application
IN THE CASE of The Broderick Tower, Helifix delivered the DryFix materials within 24 hours of approval and remained onsite to assist Akins Construction during the installation process. A variety of lengths and sizes (10 to 15 inches) of DryFix remedial ties were utilized to secure the loose terracotta and limestone on all four corners of the building's 34 floors. This was done in addition to various re-anchoring throughout the remainder of the building.
Installation involved the simple power-driving of about four to six DryFix anchor ties per corner stone into position via a small pilot hole, using a special installation tool that leaves the end of the tie recessed below the outer face to allow an "invisible" finish. Since there was no sound back-up anchor stone available, the ties were anchored
Wedge Anchors for Cracked, Uncracked Concrete Expand Manasquan Product Line
Manasquan Premium Fasteners, a provider of stainless steel fasteners to the residential, commercial and marine construction industries, has expanded its product line with the addition of Strong-Bolt 2 type 316 stainless steel wedge anchors by Simpson Strong-Tie.
The Strong-Bolt 2 represents the next generation solution for cracked and uncracked concrete. Rigorous testing according to ICC-ES acceptance criteria earned classification as a Category 1 anchor, the highest category for performance in cracked concrete under static and seismic loading. The anchor is code listed by ICC-ES under 2009 IBC requirements for post-installed anchors in cracked and uncracked concrete.
The Strong-Bolt 2 is available in several lengths in 3/8, 1/2, 5/8-and 3/4-inch diameters. For more information, visit www.ManasquanFasteners.com.