RAFTER SPANS
Species or
Group
Span (feet and inches)
Italic Bold Print indicates spans controlled by deflection
Grade
*
2x6
Southern
Pine
1
2
3
12” oc
15-9
15-6
12-6
Spruce
Pine-Fir
1
2
3
14-1
13-8
10-8
16” oc
14-4
13-11
10-10
12-9
12-4
9-3
2x8
24” oc
12-6
11-5
8-10
10-8
10-1
7-7
12” oc
20-10
20-5
15-10
18-6
18-0
13-7
16” oc
18-11
18-0
13-9
16-7
15-7
11-9
2 x 10
24” oc
16-5
14-8
11-3
13-7
12-9
9-7
12” oc
26-6
24-10
18-9
16” oc
23-11
21-6
16-3
23-5
22-0
16-7
20-3
19-0
14-4
2 x 12
24” oc
19-6
17-6
13-3
16-7
15-7
11-8
12” oc
32-3
29-1
22-4
16” oc
28-6
25-2
19-4
27-2
25-6
19-2
23-6
22-1
16-7
24” oc
23-3
20-7
15-9
19-2
18-0
13-7
FLOOR JOIST SPANS 40 LBS. Live Load (Living Areas)
Species or
Group
Southern
Pine
Spruce
Pine-Fir
Span (feet and inches)
Italic Bold Print indicates spans controlled by deflection
Grade
*
1
2
3
1
2
3
2x6
12” oc
10-11
10-9
9-4
9-9
9-6
8-0
16” oc
9-11
9-9
8-1
8-10
8-7
6-11
2x8
24” oc
8-8
8-6
6-7
7-9
7-6
5-8
12” oc
14-5
14-2
11-11
12-10
12-6
10-2
16” oc
13-1
12-10
10-3
11-8
11-4
8-9
2 x 10
24” oc
11-5
11-0
8-5
10-2
9-6
7-2
12” oc
18-5
18-0
14-0
16-5
15-11
12-5
16” oc
16-9
16-1
12-2
14-11
14-3
10-9
2 x 12
24” oc
14-7
13-2
9-11
12-5
11-8
8-9
12” oc
22-5
21-9
16-8
19-11
19-1
14-4
16” oc
20-4
18-10
14-5
17-7
16-6
12-5
24” oc
17-5
15-4
11-10
14-4
13-6
10-2
CEILING JOIST SPANS ( DRYWALL)
Species or
Group
Span (feet and inches)
Italic Bold Print indicates spans controlled by deflection
Grade
*
2x6
Southern
Pine
1
2
3
12” oc
15-9
15-6
12-1
Spruce
Pine-Fir
1
2
3
14-1
13-8
10-4
2x8
2 x 10
2 x 12
16” oc
14-4
13-6
10-5
24” oc
12-6
11-0
8-6
12” oc
20-10
20-1
15-4
16” oc
18-11
17-5
13-3
24” oc
15-11
14-2
10-10
12” oc
26-6
24-0
18-1
16” oc
23-2
20-9
15-8
24” oc
18-11
17-0
12-10
12” oc
31-10
28-1
21-7
16” oc
27-6
24-4
18-8
24” oc
22-6
19-10
15-3
12-8
11-11
8-11
10-4
9-8
7-4
18-6
17-5
13-1
16-0
15-1
11-4
13-1
12-4
9-3
22-7
21-3
16-0
19-73
18-5
13-10
16-0
15-0
11-4
26-3
24-8
18-6
22-8
21-4
16-1
18-6
17-5
13-1
Header
Span
4-feet
6-feet
8-feet
10-feet
12-feet
14-feet
16-feet
18-feet
20-feet
Header
Span
4-feet
6-feet
8-feet
10-feet
12-feet
14-feet
16-feet
18-feet
20-feet
12
2–2x4
2–2x6
2–2x8
2–2x8
2 – 2 x 10
2 – 2 x 12
3 – 2 x 10
3 – 2 x 12
3 – 2 x 12
HEADER TABLE
SHINGLE ROOF
Header Size
Structure Width
16
20
24
2–2x4
2–2x6
2–2x6
2–2x6
2–2x6
2–2x6
2–2x8
2–2x8
2–2x8
2 –2 x 10
2 –2 x 10
2 – 2 x 12
2 – 2 x 12
2 – 2 x 12
3 – 2 x 10
3 – 2 x 10
3 – 2 x 12
3 – 2 x 12
3 – 2 x 12
3 – 2 x 12
-
28
2–2x6
2–2x8
2 –2 x 10
2 – 2 x 12
3 – 2 x 12
-
32
2–2x6
2–2x8
2 –2 x 10
3 – 2 x 10
3 – 2 x 12
-
12
2–2x4
2–2x6
2–2x6
2–2x8
2 – 2 x 10
2 – 2 x 12
3 – 2 x 10
3 – 2 x 12
3 – 2 x 12
HEADER TABLE
METAL ROOF
Header Size
Structure Width
16
20
24
2–2x4
2–2x6
2–2x6
2–2x6
2–2x6
2–2x6
2–2x8
2–2x8
2–2x8
2–2x8
2 – 2 x 10
2 – 2 x 10
2 – 2 x 10
2 – 2 x 12
3 – 2 x 10
2 – 2 x 12
3 – 2 x 10
3 – 2 x 12
3 – 2 x 12
3 – 2 x 12
3 – 2 x 12
3 – 2 x 12
-
28
2–2x6
2–2x6
2 – 2 x 10
2 – 2 x 12
3 – 2 x 10
3 – 2 x 12
-
32
2–2x6
2–2x8
2 – 2 x 10
2 – 2 x 12
3 – 2 x 12
-
GIRDER SPANS
HOUSE WIDTH
24
26
28
32
HOUSE WIDTH
24
26
28
32
SHINGLE ROOF
GIRDER SPAN
5-Foot
2-2 x 8
6-Foot
2-2 x 10
7-Foot
2-2 x 12
8-Foot
5-Foot
2-2 x 8
6-Foot
2-2 x 12
7-Foot
2-2 x 12
8-Foot
5-Foot
2-2 x 10
6-Foot
2-2 x 12
7-Foot
8-Foot
5-Foot
2-2 x 8
6-Foot
2-2 x 12
7-Foot
2-2 x 12
8-Foot
METAL ROOF
GIRDER SPAN
5-Foot
2-2 x 8
6-Foot
2-2 x 10
7-Foot
2-2 x 12
8-Foot
5-Foot
2-2 x 8
6-Foot
2-2 x 12
7-Foot
2-2 x 12
8-Foot
5-Foot
2-2 x 8
6-Foot
2-2 x 12
7-Foot
8-Foot
5-Foot
2-2 x 8
6-Foot
2-2 x 10
7-Foot
2-2 x 12
8-Foot
SIZE
3-2 x 6
3-2 x 8
3-2 x 10
3-2 x 12
3-2 x 6
3-2 x 8
3-2 x 10
3-2 x 12
3-2 x 6
3-2 x 8
3-2 x 10
3-2 x 12
3-2 x 6
3-2 x 8
3-2 x 10
3-2 x 12
SIZE
3-2 x 6
3-2 x 8
3-2 x 8
3-2 x 10
3-2 x 6
3-2 x 8
3-2 x 10
3-2 x 12
3-2 x 6
3-2 x 8
3-2 x 10
3-2 x 12
3-2 x 6
3-2 x 8
3-2 x 10
3-2 x 12