Masonry Magazine September 1976 Page. 15
The member to which it is anchored does not exceed one inch. One end of such anchors is nailed or screwed directly to wood frame, steel studs or other supports, and the other end is placed in a mortar joint.
Corrugated sheet metal anchors should be fastened to wood studs with an 8 d nail. If screws are used, they should have ultimate withdrawal loads in excess of 240 lbs. Proper fastening of corrugated anchors to backing requires that the nail or screw be located as close as possible to the bend in the anchor (Fig. 1). This is accomplished by taking precautions to locate the nail or screw precisely with respect to the horizontal joint and pulling the anchor tight, or by fastening the anchor after the masonry is laid in place. Spacing of anchors should assure that all design loads are adequately transmitted to the structure. According to HUD Minimum Property Standards, corrugated tie spacing should be based on a design load of 80 Ib. per tie. Using this allowable load, Table 1 indicates recommended tie spacings for three different wind loads.
The details illustrated in Fig. 2 and 3 are representative of construction practices based on experience, which have resulted in good performance of veneer anchored to concrete, masonry, and wood or steel studs. Figure 2 illustrates requirements for veneer applied to studs with a grouted backing space reinforced with wire mesh. Figure 3 illustrates concrete masonry veneer anchored to concrete or masonry backing.
Adhered Veneer
Adhered Veneer is veneer secured and supported through adhesion to a bonding material applied over a suitable backing. Masonry units used in this application are limited as to weight. The Uniform Building Code limits the weight of units for adhered veneer to not more than 15 lbs. per square foot. Codes also require that adhered veneer and its backing be designed to have sufficient bond to the supporting element to withstand a shearing stress of 50 lbs per square inch.
As with anchored veneer, various details for adhered veneer have been developed through experience and have been proven by satisfactory performance for many years. Several such details are illustrated in Figure 4. The details are based on the provisions of the Uniform Building Code where engineered designs are not used. For adhered veneer, two methods of application are permitted:
"1. A paste of neat portland cement shall be brushed on the backing and the back of the veneer unit. Type S mortar then shall be applied to the backing and the veneer unit. Sufficient mortar shall be used to create a slight excess to be forced out the edges of the units. The units shall be tapped into place so as to completely fill the