Simpson Anchors - Anchoring and Fastening Systems - BuildSite.com
Simpson Anchors - Anchoring and Fastening Systems - BuildSite.com
Simpson Anchors - Anchoring and Fastening Systems - BuildSite.com
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Acrylic Adhesives<br />
80<br />
AT Technical Information<br />
Spacing Tension (fs) (cont’d)<br />
*<br />
Sact<br />
Dia.<br />
Rebar<br />
E 3⁷⁄₈<br />
⁷⁄₈<br />
7³⁄₄<br />
#7<br />
13¹⁄₈ 4¹⁄₂<br />
1<br />
9<br />
#8<br />
15 5¹⁄₈<br />
1¹⁄₈<br />
10¹⁄₈<br />
#9<br />
16⁷⁄₈ 5⁵⁄₈<br />
1¹⁄₄<br />
11¹⁄₄<br />
#10<br />
18³⁄₄<br />
#11<br />
20⁵⁄₈<br />
*See page 10 for an<br />
explanation of the<br />
load table icons<br />
(in.) Scr 15¹⁄₂ 13⁵⁄₈ 52¹⁄₂ 18 15³⁄₄ 60 20¹⁄₂ 17³⁄₄ 67¹⁄₂ 22¹⁄₂ 19³⁄₄ 75 82¹⁄₂<br />
Smin 2 3⁷⁄₈ 6⁵⁄₈ 2¹⁄₄ 4¹⁄₂ 7¹⁄₂ 2⁵⁄₈ 5¹⁄₈ 8¹⁄₂ 2⁷⁄₈ 5⁵⁄₈ 9³⁄₈ 10³⁄₈<br />
fsmin 0.57 0.58 0.80 0.57 0.58 0.80 0.57 0.58 0.80 0.57 0.58 0.80 0.80<br />
2 0.57<br />
3 0.60 0.59 0.58 0.57<br />
4 0.63 0.59 0.62 0.60 0.59<br />
5 0.67 0.63 0.65 0.60 0.63 0.62<br />
6 0.70 0.67 0.67 0.64 0.65 0.61 0.64 0.59<br />
8 0.76 0.76 0.81 0.73 0.71 0.80 0.70 0.68 0.68 0.65<br />
10 0.82 0.84 0.81 0.78 0.79 0.81 0.75 0.74 0.81 0.73 0.71 0.80<br />
12 0.89 0.93 0.82 0.84 0.86 0.82 0.80 0.81 0.81 0.77 0.77 0.81 0.80<br />
14 0.95 1.00 0.83 0.89 0.93 0.82 0.84 0.88 0.82 0.81 0.83 0.81 0.81<br />
16 1.00 0.84 0.95 1.00 0.83 0.89 0.94 0.83 0.86 0.89 0.82 0.82<br />
20 0.86 1.00 0.85 0.99 1.00 0.84 0.95 1.00 0.83 0.83<br />
24 0.88 0.86 1.00 0.85 1.00 0.84 0.84<br />
28 0.89 0.88 0.87 0.86 0.85<br />
32 0.91 0.89 0.88 0.87 0.86<br />
36 0.93 0.91 0.89 0.88 0.87<br />
40 0.95 0.92 0.91 0.89 0.88<br />
50 0.99 0.96 0.94 0.92 0.91<br />
60 1.00 1.00 0.97 0.95 0.94<br />
70 1.00 0.98 0.97<br />
80 1.00 0.99 See notes on<br />
83 1.00 previous page<br />
Load Adjustment Factors for AT Acrylic-Tie ® Adhesive in Normal-Weight Concrete: Spacing, Shear Load<br />
How to use these charts:<br />
1. The following tables are for reduced spacing.<br />
2. Locate the anchor size to be used for either a tension <strong>and</strong>/or<br />
shear load application.<br />
3. Locate the embedment (E) at which the anchor is to be installed.<br />
4. Locate the spacing (S act ) at which the anchor is to be installed.<br />
5. The load-adjustment factor (f s ) is the intersection of the row <strong>and</strong> column.<br />
Spacing Shear (fs)<br />
Sact<br />
(in.)<br />
Dia. ³⁄₈ ¹⁄₂ ⁵⁄₈ ³⁄₄ ⁷⁄₈ 1 1¹⁄₈ 1¹⁄₄<br />
Rebar #3 #4 #5 #6 #7 #8<br />
E 1³⁄₄ 3¹⁄₂ 2¹⁄₈ 4¹⁄₄ 2¹⁄₂ 5¹⁄₂ 3³⁄₈ 6³⁄₄ 3⁷⁄₈ 7³⁄₄ 4¹⁄₂ 9 5¹⁄₈ 10¹⁄₈ 5⁵⁄₈ 11¹⁄₄<br />
Scr 2⁵⁄₈ 5¹⁄₄ 3¹⁄₄ 6³⁄₈ 3³⁄₄ 8¹⁄₄ 5¹⁄₈ 10¹⁄₈ 5⁷⁄₈ 11⁵⁄₈ 6³⁄₄ 13¹⁄₂ 7³⁄₄ 15¹⁄₄ 8¹⁄₂ 16⁷⁄₈<br />
Smin ⁷⁄₈ 1³⁄₄ 1¹⁄₈ 2¹⁄₈ 1¹⁄₄ 2³⁄₄ 1³⁄₄ 3³⁄₈ 2 3⁷⁄₈ 2¹⁄₄ 4¹⁄₂ 2⁵⁄₈ 5¹⁄₈ 2⁷⁄₈ 5⁵⁄₈<br />
fsmin 0.90 0.83 0.90 0.83 0.90 0.83 0.90 0.83 0.90 0.83 0.90 0.83 0.90 0.83 0.90 0.83<br />
⁷⁄₈ 0.90<br />
1 0.91<br />
1¹⁄₂ 0.94 0.92 0.91<br />
2 0.96 0.84 0.94 0.93 0.91 0.90<br />
2¹⁄₂ 0.99 0.87 0.96 0.85 0.95 0.92 0.91 0.91<br />
3 1.00 0.89 0.99 0.87 0.97 0.84 0.94 0.93 0.92 0.91 0.90<br />
3¹⁄₂ 0.92 1.00 0.89 0.99 0.85 0.95 0.83 0.94 0.93 0.92 0.91<br />
4 0.94 0.91 1.00 0.87 0.97 0.85 0.95 0.83 0.94 0.93 0.92<br />
5 0.99 0.95 0.90 1.00 0.87 0.98 0.85 0.96 0.84 0.95 0.94<br />
6 1.00 0.99 0.93 0.90 1.00 0.88 0.98 0.86 0.97 0.84 0.96 0.84<br />
7 1.00 0.96 0.92 0.90 1.00 0.88 0.99 0.86 0.97 0.85<br />
8 0.99 0.95 0.92 0.90 1.00 0.88 0.99 0.87<br />
9 1.00 0.97 0.94 0.92 0.90 1.00 0.88<br />
10 1.00 0.96 0.93 0.91 0.90<br />
12 1.00 0.97 0.95 0.93<br />
14 1.00 0.98 0.96<br />
16 1.00 0.99<br />
17 1.00<br />
1. E = Embedment depth (inches).<br />
2. Sact = actual spacing distance at which anchors are installed (inches).<br />
3. Scr = critical spacing distance for 100% load (inches).<br />
4. Smin = minimum spacing distance for reduced load (inches).<br />
6. Multiply the allowable load by the applicable load-adjustment factor.<br />
7. Reduction factors for multiple spacings are multiplied together.<br />
8. Adjustment factors do not apply to allowable steel strength values.<br />
9. Adjustment factors are to be applied to allowable Shear Load<br />
Based on Concrete Edge Distance values only.<br />
5. fs = adjustment factor for allowable load at actual spacing distance.<br />
6. fscr = adjustment factor for allowable load at critical spacing distance. fscr is always = 1.00.<br />
7. fsmin = adjustment factor for allowable load at minimum spacing distance.<br />
8. fs = fsmin + [(1 - fsmin) (Sact - Smin) / (Scr - Smin)].<br />
*<br />
C-SAS-2009 © 2009 SIMPSON STRONG-TIE COMPANY INC.