How to use these charts:

1. The following tables are for reduced Spacing.
2. Locate the anchor size to be used for either a tension and/or shear load application.
3. Locate the embedment (E) at which the anchor is to be installed.
4. Locate the spacing (S_act) at which the anchor is to be installed.
5. The load adjustment factor (f_s) is the intersection of the row and column.
6. Multiply the allowable load by the applicable load adjustment factor.
7. Reduction factors for multiple spacing are multiplied together.
8. Adjustment factors do not apply to allowable steel strength values.
9. Adjustment factors are to be applied to allowable Tension Load Based on Bond Strength values or allowable Shear Load Based on Concrete Edge Distance values only.

Spacing Tension (f_s)

1. E = Embedment depth (inches).
2. S_act= actual spacing distance at which anchors are installed (inches).
3. S_cr= critical spacing distance for 100% load (inches).
4. S_min= minimum spacing distance for reduced load (inches).
5. S_int = intermediate spacing distance at which anchors are installed (inches).
6. f_s= adjustment factor for allowable load at actual spacing distance.
7. f_scr= adjustment factor for allowable load at critical spacing distance. f_scr is always = 1.00.
8. f_smin= adjustment factor for allowable load at minimum spacing distance.
9. f_s = f_smin + [(1 - f_smin) (S_act - S_min) / (S_cr - S_min)].

Spacing Shear (f_s)

1. E = Embedment depth (inches).
2. S_act= actual spacing distance at which anchors are installed (inches).
3. S_cr= critical spacing distance for 100% load (inches).
4. S_min= minimum spacing distance for reduced load (inches).
5. S_int = intermediate spacing distance at which anchors are installed (inches).
6. f_s= adjustment factor for allowable load at actual spacing distance.
7. f_scr= adjustment factor for allowable load at critical spacing distance. f_scr is always = 1.00.
8. f_smin= adjustment factor for allowable load at minimum spacing distance.
9. f_s = f_smin + [(1 - f_smin) (S_act - S_min) / (S_cr - S_min)].