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R804.3.3.3 Hip Support Columns
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Hip support columns shall be used to support hip members at the ridge. A hip support column shall consist of a pair of C-shape members, with a minimum size determined in accordance with Table R804.3.3.3. The C-shape members shall be connected at a maximum spacing of 24 inches (610 mm) on center to form a box using minimum 3-inch by 33-mil (76 mm by 0.84 mm) strap connected to each of the flanges of the C-shape members with three-No. 10 screws. Hip support columns shall have a continuous load path to the foundation and shall be supported at the ceiling line by an interior wall or by an approved design for a supporting element.
| BUILDING WIDTH (feet) |
HIP SUPPORT COLUMN DESIGNATIONa, b | |||
| Equivalent ground snow load (psf) | ||||
| 0 to 20 | 21 to 30 | 31 to 50 | 51 to 70 | |
| 24 | 2-350S162-33 | 2-350S162-33 | 2-350S162-43 | 2-350S162-54 |
| 28 | 2-350S162-54 | 2-550S162-54 | 2-550S162-68 | 2-550S162-68 |
| 32 | 2-550S162-68 | 2-550S162-68 | 2-550S162-97 | — |
| 36 | 2-550S162-97 | — | — | — |
| 40 | — | — | — | — |
For SI: 1 foot = 304.8 mm, 1 pound per square foot = 0.0479 kPa.
- Box shape column only in accordance with Figure R804.3.3.4(2).
- 33-ksi steel for 33- and 43-mil material; 50-ksi steel for thicker material.
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