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R804.3.3.4 Hip Framing Connections

Residential Code 2012 of South Holland > 8 Roof-Ceiling Construction > R804 Steel Roof Framing > R804.3 Roof Construction > R804.3.3 Hip Framing > 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).

TABLE R804.3.3.4(1)
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 strap^{a, 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.

FIGURE R804.3.3.4(1)
JACK RAFTER CONNECTION AT EAVE

TABLE R804.3.3.4(2)
CONNECTION REQUIREMENTS HIP MEMBER TO HIP SUPPORT COLUMN
BUILDING WIDTH (feet)	NUMBER OF NO. 10 SCREWS IN EACH FRAMING ANGLE^{a, 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.

For SI: 1 inch = 25.4 mm, 1 mil = 0.0254 mm.

TABLE R804.3.3.4(3)
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 strap^{a, 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.

FIGURE R804.3.3.4(3)
HIP CONNECTIONS AT RIDGE

FIGURE R804.3.3.4(4)
HIP CONNECTIONS AT RIDGE AND BOX COLUMN

For SI: 1 inch = 25.4 mm, 1 mil = 0.0254 mm.

FIGURE R804.3.3.4(5)
HIP MEMBER CONNECTION AT WALL CORNER

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