Wood Studs (spaced at 12, 16, 20 or 24 inches)

If anchoring directly into wood studs, use at least six (one in each corner, as shown in blue in the diagram on the right) minimum ¼ inch wood screws with washers, of sufficient length for at least 2-½ inch embedment into the studs.

Wood Studs (spaced at 12, 16, 20 or 24 inches)

If anchoring to blocking between wood studs, use minimum 2x4 inch blocks, end-nailed into studs with two 16d nails or toe-nailed into studs with four 8d nails. Use at least six (one in each corner, as shown in blue in the diagram on the right) minimum ¼ inch wood screws with washers, of sufficient length for at least 2-½ inch embedment into the blocking.

Metal Studs (spaced at 12, 16, 20 or 24 inches)

If anchoring directly to metal studs, studs must be minimum 18 gauge. Use at least ten (two in each corner, as shown in blue in the diagram on the right) #14 sheet metal screws with washers, of sufficient length to penetrate at least 3 threads beyond the stud.

If backing is needed between the studs, the backing must be minimum 18 gauge. Attach backing to metal studs with 12 gauge 3x3 inch angle clip or Simpson SFC2.25 clips with two #10 sheet metal screws in each leg.

Concrete Masonry Unit Wall

Minimum strength must be 2000 PSI.

Use at least six (one in each corner, in any available anchor slot) 3/8 inch concrete anchors of sufficient length for the embedment listed below.

• ESR 1056 for Simpson Titen HD 3/8-inch masonry anchor. Minimum 2-¾ inch (70 mm) embedment required
• ESR 3056 for Hilti KH-EZ 3/8-inch masonry anchor (for fully grouted CMU cells only). Minimum 1-5/8 inch (41.3 mm) embedment required

Anchors shall not be installed within 12 inches (305 mm) of wall edges or 1-½ inches (38 mm) of masonry block edges.

Solid Concrete Wall

Minimum strength must be 2500 PSI.

Use at least six (one in each corner, in any available anchor slot) 3/8 inch concrete anchors of sufficient length for at least 2-½ inch (63.5 mm) embedment into the wall.

• ESR 2713 for Simpson Titen HD 3/8-inch concrete anchor
• ESR 3027 for Hilti KH-EZ 3/8-inch concrete anchor

Brick Wall

(Double and Single Layer of Brick Masonry)

Minimum strength must be 2500 PSI.

Use at least six (one in each corner, in any available anchor slot) ¼ inch masonry anchors of sufficient length for the embedment listed below.

• Kwik Conn 2 (No ESR). Minimum 1-¾ inch (44.5 mm) embedment required

Brick installation is only permitted in seismic design category A or B, and where ESR anchors are not required. Ground mount only.

Channel Strut (Unistrut)

Struts must be minimum 1-5/8 x 1-5/8 inch, 12 gauge.

If mounting on wood studs, attach each strut to at least three studs, using minimum ¼ inch wood screws with washers of sufficient length for at least 2-½ inch embedment into the studs.

If mounting on metal studs, attach each strut to at least three studs, using at least one #14 sheet metal screw with washer per stud, of sufficient length to penetrate at least 3 threads beyond the studs.

To attach the bracket to the struts, use at least six (one in each corner, as shown in blue in the diagram on the right) ¼ inch hex head screws with washers and strut nuts.

Channel strut shall have a maximum unsupported span of 24 inches (610 mm) and shall not be cantilevered.