Simpson Strong-Tie Wood Construction Connectors

Simpson Strong-Tie ® Wood Construction Connectors

Holdown Anchorage Solutions The anchor bolt solutions in Table 1 (DF/SP Lumber) and Table 2 (SPF/HF Lumber) provide anchorage solutions for the holdown sizes listed. Unless noted otherwise, the solutions meet the maximum published allowable load of the holdown. Refer to pp. 32–34 for SB anchor bolt installation details, pp. 36–39 for SSTB anchor bolts installation details, and p. 42 for PAB anchor bolt details. Table 1 — Anchorage Selection Guide for Holdowns Attached to DF/SP Lumber Holdown on DF/SP Lumber Stemwall Slab on Grade Stemwall Width (in.) Wind and Seismic Design Category A&B Seismic Design Category C–F Wind and Seismic Design Category A&B Seismic Design Category C–F Midwall/Corner End Wall Midwall/Corner End Wall Midwall/Corner Garage Curb Midwall/Corner Garage Curb HDU2 6 SSTB16 SSTB24 SSTB16 SSTB16 SSTB20* (2,960) HDU4 6 SB5/8X24 SB5/8X24 SSTB16 SB5/8X24 SSTB20 SB5/8X24 HDU5 6 SB5/8X24 SB5/8X24 SSTB20 SB5/8X24 SSTB24 SB5/8X24 HDU8 8 SSTB28 PAB7 SB7/8X24* (7,855) PAB7 SSTB28 SSTB28 HDQ8 8 SB7/8X24* (8,980) PAB7 PAB7 PAB7 SSTB28 SSTB28 PAB7 HDU11 — PAB8 PAB8 SB1x30 SB1X30 HHDQ11 — HDU14 — PAB8 PAB8 SB1x30 SB1X30 (See Note 4) HHDQ14 — LTTP2 6 SSTB16 SSTB16* (2,550) SSTB16 SSTB16 LTTI31 6 HTT4 6 SSTB24* (4,295) SB5/8X24 SSTB16 SSTB24* (4,295) SSTB20 SB5/8X24 HTT5 6 SB5/8X24 SB5/8X24 SSTB16 SB5/8X24 SSTB24 SB5/8X24 HD3B 6 SSTB16 SSTB24 SSTB16 SSTB16 SSTB24 HD5B 6 SB5/8X24 SB5/8X24 SB5/8X24 SSTB16 SB5/8X24 SSTB24 SB5/8X24 HD7B 8 SSTB28* (7,310) SSTB28* (7,315) PAB7 SSTB28 SSTB28 HD9B — PAB7 PAB7 SSTB28 SSTB28 PAB7 HD12 — PAB8 PAB8 SB1X30 SB1X30 (See Note 4)

Concrete Connectors and Anchors

See foonotes below.

Table 2 — Anchorage Selection Guide for Holdowns Attached to SPF/HF Lumber Holdown on Stemwall Slab on Grade

Wind and Seismic Design Category A&B

Seismic Design Category C–F

Wind and Seismic Design Category A&B

Seismic Design Category C–F

Stemwall Width (in.)

SPF/HF Lumber HDU2 HDU4 HDU5 HDU8 HDQ8 HDU11 HHDQ11

Midwall/Corner

End Wall

Midwall/Corner

End Wall

Midwall/Corner

Garage Curb Midwall/Corner

Garage Curb

6 6 6 8 8 8 8 6 6 6 6 6 6 8 8

SSTB16 SSTB16

SSTB16 SSTB24

SSTB16 SSTB16

SSTB16

SSTB16 SSTB20 SSTB28 SSTB28

SSTB24

SSTB24* (4,295)

SB5/8X24

SSTB16

SSTB24* (4,295)

SB5/8X24

SSTB28 SSTB28

SSTB28 SSTB28

SSTB28* (6,395) SSTB28* (6,395)

SSTB28 SSTB28

SSTB28 SSTB28

SB1X30* (9,505)

PAB8 PAB8

PAB8

PAB8

SB1x30

SB1x30

SB1X30

PAB8

HDU14

— —

PAB8

PAB8

SB1x30

SB1x30

HHDQ14

LTTP2 LTTI31

SSTB16

SSTB16

SSTB16

SSTB16

HTT4 HTT5 HD3B HD5B HD7B HD9B HD12

SSTB20

SB5/8X24 SB5/8X24

SSTB16 SSTB20

SSTB20

SSTB16* (3,780)

SB5/8X24 SB5/8X24

SB5/8X24

SB5/8X24

SSTB24 SSTB16

SSTB16 SSTB24 SSTB28

SSTB24

SSTB16

SSTB20* (2,960)

SB5/8X24

SSTB16

SSTB24

SB5/8X24

SSTB28

SSTB28

SSTB28

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SSTB28* (8,360)

PAB7

PAB7 PAB8

SSTB28* (8,360)

PAB7

SSTB28

PAB7

—

PAB8

SB1x30

SB1x30

*Anchorage solutions marked with an asterisk (*) are within 5% of the holdown’s maximum allowable load. The load in parenthesis is the allowable load of the anchor bolt. 1. Foundation dimensions are for anchorage only. Foundation design (size and reinforcement) by designer. The registered design professional may specify alternative embedment, footing size, and anchor bolt. 2. Minimum edge distance is 1 3/4 ". Minimum end distance is 5" for SSTBs and the SB1x30; 4 1/4 " for SB 5/8 x24 and SB 7/8 x24. 3. PAB7 anchor bolts require d e = 10" with F = 15". PAB8 anchor bolts require d e = 12" with F = 18". Anchorage design conforms to ACI 318 and assumes f' c = 2,500 psi cracked concrete with no supplementary reinforcement, with seismic design conforming to ACI 318-14, Section 17.2.3.4. CNW7/8 and CNW1 available for cases where a longer anchor bolt is required. Select bolt length based on foundation configuration to meet the required footing embedment. 4. Where noted, SB1x30 requires footing width to be 18" wide. PAB8 solution may also be used. 5. Per Section 1613 of the IBC, detached one- and two-family dwellings in SDC C may use Wind and Seismic Design Category A&B values. 6. PAB anchorage capacity is based on footing dimensions as shown in table on p. 43. See illustration for PAB installed in a footing on p. 42. For stemwall installations, PAB must be embedded into the footing.

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