1. Studs, posts and blocking details are specified by the Designer and are not shipped with the Anchor Tiedown System.
2. With the Anchor Tiedown System, it is not necessary to design the lumber in tension. See the Compression Member Selection Tables for compression member allowable capacities and additional design assumptions.
3. The compression capacity of the lumber listed in the tables are based on the 2005 National Design Specification (NDS) for the plate heights, wall plate and compression member species specified.
4. Wall plates and stud species are assumed to be the same as specified in the Compression Member Selection Tables (UNO). The Designer must review the compression members for variation of species, or unsupported heights other than those listed in the tables.
5. Allowable perpendicular to grain stress for D.Fir-L lumber based on 625 psi, Southern Pine lumber based on 565 psi, Spruce-Pine-Fir lumber based on 425 psi, and Hem-Fir lumber based on 405 psi. Parallam lumber based on 625 psi or 565 psi as it will bear on solid sawn lumber.
6. 2x and 3x based on # 2 grade, 4x and 6x lumber based on #1 grade.
7. Bearing area factor Cb not included in lumber values.
8. Perpendicular to grain capacities listed in the Compression Member Selection Tables may be multiplied by Cb for bearings not nearer than 3" to the end of the horizontal member. T is the width of the compression member.
   
9. Effective length of lumber (l_e) equal to plate height, less (3) 2x wall plates (i.e. 4½").
10. Capacities shown, assume K_e = 1.0.

topColumn Perpendicular and Parallel to Grain Capacities for D.Fir-L (Solid Lumber Sizes)

topColumn Perpendicular and Parallel to Grain Capacities for D.Fir-L (Multiple 2x Sizes)

1. See Compression Members: General Notes for additional information.
2. Shaded columns are limited by Parallel to Grain loads.

Refer to the ATS Selector software for alternate grade capacities.

topColumn Perpendicular and Parallel to Grain Capacities for Spruce-Pine-Fir (Solid Lumber Sizes)

topColumn Perpendicular and Parallel to Grain Capacities for Spruce-Pine-Fir (Multiple 2x Sizes)

1. See Compression Members: General Notes for additional information.
2. Shaded columns are limited by Parallel to Grain loads.

Refer to the ATS Selector software for alternate grade capacities.

topColumn Perpendicular and Parallel to Grain Capacities for Hem-Fir (Solid Lumber Sizes)

topColumn Perpendicular and Parallel to Grain Capacities for Hem-Fir (Multiple 2x Sizes)

1. See Compression Members: General Notes for additional information.
2. Shaded columns are limited by Parallel to Grain loads.

Refer to the ATS Selector software for alternate grade capacities.

topColumn Perpendicular and Parallel to Grain Capacities for Southern Pine (Solid Lumber Sizes)

topColumn Perpendicular and Parallel to Grain Capacities for Southern Pine (Multiple 2x Sizes)

1. See Compression Members: General Notes for additional information.
2. Shaded columns are limited by Parallel to Grain loads.

Refer to the ATS Selector software for alternate grade capacities.

topColumn Perpendicular and Parallel to Grain Capacities for Parallam (PSL) with Douglas Fir Sill Plate

topColumn Perpendicular and Parallel to Grain Capacities for Parallam (PSL) with Southern Pine Sill Plate

1. See Compression Members: General Notes for additional information.
2. PSL Grade = 1.8E with F_c=2500 psi.
3. F_{c perp}=565 psi for Southern Pine and F_{c perp}=625 psi for Douglas-Fir Larch
4. Shaded columns are limited by Parallel to Grain loads.

Refer to the ATS Selector software for alternate grade capacities.

topColumn Perpendicular and Parallel to Grain Capacities for Timberstrand (LSL) with Douglas Fir Larch Sill Plate

topColumn Perpendicular and Parallel to Grain Capacities for Timberstrand (LSL) with Southern Pine Sill Plate

1. See Compression Members: General Notes for additional information.
2. LSL Grade = 1.3E with F_c=1400 psi.
3. F_{c perp}=565 psi for Southern Pine and F_{c perp}=625 psi for Douglas-Fir Larch
4. Shaded columns are limited by Parallel to Grain loads.

Refer to the ATS Selector software for alternate grade capacities.