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R804.3.3.4 Hip Framing Connections
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Hip rafter framing connections shall be installed in accordance with the following:
- Jack rafters shall be connected at the eave to a parallel C-shape blocking member in accordance with Figure R804.3.3.4(1). The C-shape blocking member shall be attached to the supporting wall track with minimum two No. 10 screws.
- Jack rafters shall be connected to a hip member with a minimum 2-inch by 2-inch (51 mm by 51 mm) clip angle fastened with No.10 screws to the hip member in accordance with Figure R804.3.2.4 and Table R804.3.2.4. The clip angle shall have a steel thickness equivalent to or greater than the jack rafter thickness and shall extend the depth of the jack rafter member to the extent possible.
- The connection of the hip support columns at the ceiling line shall be in accordance with Figure R804.3.3.4(2), with an uplift strap sized in accordance with Table R804.3.3.4(1).
- The connection of hip support members, ridge members and hip support columns at the ridge shall be in accordance with Figures R804.3.3.4(3) and R804.3.3.4(4) and Table R804.3.3.4(2).
- The connection of hip members to the wall corner shall be in accordance with Figure R804.3.3.4(5) and Table R804.3.3.4(3).
UPLIFT STRAP CONNECTION REQUIREMENTS HIP SUPPORT COLUMN AT CEILING LINE
| BUILDING WIDTH (feet) | BASIC WIND SPEED (mph) EXPOSURE B | ||||
| 85 | 100 | 110 | — | — | |
| BASIC WIND SPEED (mph) EXPOSURE C | |||||
| — | 85 | — | 100 | 110 | |
| Number of No. 10 screws in each end of each 3-inch by 54-mil steel strapa, b, c | |||||
| 24 | 3 | 4 | 4 | 6 | 7 |
| 28 | 4 | 6 | 6 | 8 | 10 |
| 32 | 5 | 8 | 8 | 11 | 13 |
| 36 | 7 | 10 | 11 | 14 | 17 |
| 40 | — | — | — | — | — |
For SI: 1 foot = 304.8 mm, 1 pound per square foot = 0.0479 kPa, 1 mil = 0.0254 mm.
- Two straps are required, one each side of the column.
- Space screws at 3/4 inch on center and provide 3/4-inch end distance.
- 50-ksi steel strap.
CONNECTION REQUIREMENTS HIP MEMBER TO HIP SUPPORT COLUMN
| BUILDING WIDTH (feet) | NUMBER OF NO. 10 SCREWS IN EACH FRAMING ANGLEa, b, c | |||
| Equivalent ground snow load (psf) | ||||
| 0 to 20 | 21 to 30 | 31 to 50 | 51 to 70 | |
| 24 | 10 | 10 | 10 | 12 |
| 28 | 10 | 10 | 14 | 18 |
| 32 | 10 | 12 | — | — |
| 36 | 14 | — | — | — |
| 40 | — | — | — | — |
For SI: 1 foot = 304.8 mm, 1 pound per square foot = 0.0479 kPa.
- Screws to be divided equally between the connection to the hip member and the column. Refer to Figures R804.3.3.4(3) and R804.3.3.4(4).
- The number of screws required in each framing angle is not to be less than shown in Table R804.3.3.4(1).
- 50-ksi steel from the framing angle.
UPLIFT STRAP CONNECTION REQUIREMENTS HIP MEMBER TO WALL
| BUILDING WIDTH (feet) | BASIC WIND SPEED (mph) EXPOSURE B | ||||
| 85 | 100 | 110 | — | — | |
| BASIC WIND SPEED (mph) EXPOSURE C | |||||
| — | 85 | — | 100 | 110 | |
| Number of No. 10 screws in each end of each 3-inch by 54-mil steel strapa, b, c | |||||
| 24 | 2 | 2 | 3 | 3 | 4 |
| 28 | 2 | 3 | 3 | 4 | 5 |
| 32 | 3 | 4 | 4 | 6 | 7 |
| 36 | 3 | 5 | 5 | 7 | 8 |
| 40 | — | — | — | — | — |
For SI: 1 foot = 304.8 mm,1 pound per square foot = 0.0479 kPa.
- Two straps are required, one each side of the column.
- Space screws at 3/4 inches on center and provide 3/4-inch end distance.
- 50-ksi steel strap.
JACK RAFTER CONNECTION AT EAVE
For SI: 1 inch = 25.4 mm, 1 mil = 0.0254 mm.
HIP SUPPORT COLUMN
HIP CONNECTIONS AT RIDGE
For SI: 1 inch = 25.4 mm, 1 mil = 0.0254 mm.
HIP CONNECTIONS AT RIDGE AND BOX COLUMN
HIP MEMBER CONNECTION AT WALL CORNER
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