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Various Header Applications

1. Loads may not be increased for duration of load.
2. Uplift loads have been increased for earthquake or wind loading with no further increase allowed. Reduce where other loads govern.
3. Uplift loads are based on DF/SP lumber. For SPF/HF, use 0.86 x DF/SP uplift load.
4. LVL headers are assumed to be made primarily from Douglas fir or southern pine. For LVL made from spruce-pine-fir or similar less-dense veneers, use the values found in the SPF/HF column.
5. DF I-joists headers include flanges made from solid sawn Douglas fir, LVL made primarily of DF/SP, or LSL. For header flanges with thicknesses from 1 5/16" to 1 3/8", use 0.85 of the I-joist header load. For header flanges with thicknesses from 1 1/8" to 1 1/4", use 0.75 of the I-joist header load.
6. SCL (structural composite lumber) is LVL, LSL, and Parallam® PSL.
7. Web stiffeners required for the ITS Alternate Installation when installing optional joist nails for additional uplift load.
8. Code values are based on DF/SP header species.
9. I-joists with flanges less than 1 5/16" thick used in combination with hangers thinner than 14 gauge may deflect an additional 1/32" beyond the standard 1/8" limit.
10. For 2 1/4"-wide joists, see Top-Flange Hangers – I-Joists, Glulam and SCL Tables for allowable loads.

Optional Nailing for Increased Uplift

1. Uplift loads have been increased for earthquake or wind loading with no further increase allowed. Reduce where other loads govern.
2. Uplift loads are based on DF/SP lumber. For SPF/HF, use 0.86 x DF/SP uplift load.
3. Web stiffeners are required on I-joist for additional nailing.

Nailer Table

This table indicates various allowable loads for MIT hangers used on wood nailers. The header nail type must be substituted for those listed in other tables.

1. Uplift loads have been increased for earthquake or wind loading with no further increase allowed. Reduce where other loads govern.
2. Steel nailer allowable loads apply to steel header material with thickness between 1/4" and 3/4" with minimum F_y = 36 ksi. Design of steel header by designer.
3. 0.157"-diameter x 5/8"-long powder-actuated fastener = PDPAT-62KP. A red (level 5) or purple (level 6) load may be required to achieve specified penetration.

Code Reports & Compliance

Drawings