Universal Forest Products

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Where speed meets strength.

Canadian Controlled Vibration Maximum Span Charts

  1. Span is defined as the distance between center lines of bearing points and is based starting from a live load deflection criteria of L/360.
  2. Open Joist™ is in accordance with the NBC 1995, CAN/CSA-O86.1-M94 standards for limits state design calculations and standards for controlled vibration spans from CCMC. (No 12118R).
  3. You must also consult with the required strongback table for controlled vibration.

9-3/8" Joist Depth
11-7/8" Joist Depth
14" Joist Depth
16" Joist Depth

Joist Depth 9-3/8"       LIVE LOAD DETECTION ≤ L/360
 

Live Load
(psf)

Dead Load
(psf)
CHORDS
SPACING O.C.
DIM. (po.)
SPECIE/GRADE
12"
16"
19.2"
24"
40
10
3 x 2
SPF #2
15' - 10"
15' - 10"
15' - 7"
14' - 4"
4 x 2
SPF #2
16' - 10"
16' - 10"
16' - 10"
15' - 11"
4 x 2
SPF 2100 f1, 8 E
19' - 10"
18' - 10"
18' - 0"
17' - 0"
40
15
3 x 2
SPF #2
15' - 10"
15' - 10"
15' - 7"
14' - 4"
4 x 2
SPF #2
16' - 10"
16' - 10"
16' - 10"
15' - 11"
4 x 2
SPF 2100 f1, 8 E
19' - 10"
18' - 10"
18' - 0"
17' - 0"
40
20
3 x 2
SPF #2
15' - 10"
15' - 10"
15' - 7"
14' - 4"
4 x 2
SPF #2
16' - 10"
16' - 10"
16' - 10"
15' - 10"
4 x 2
SPF 2100 f1, 8 E
19' - 10"
18' - 10"
18' - 0"
16' - 7"
40
25
3 x 2
SPF #2
15' - 10"
15' - 10"
15' - 7"
14' - 3"
4 x 2
SPF #2
16' - 10"
16' - 10"
16' - 10"
15' - 1"
4 x 2
SPF 2100 f1, 8 E
19' - 10"
18' - 10"
18' - 0"
15' - 4"
40
30
3 x 2
SPF #2
15' - 10"
15' - 10"
15' - 7"
13' - 7"
4 x 2
SPF #2
16' - 10"
16' - 10"
16' - 7"
14' - 4"
4 x 2
SPF 2100 f1, 8 E
19' - 10"
18' - 10"
17' - 7"
14' - 4"
40
36
3 x 2
SPF #2
15' - 10"
15' - 10"
14' - 10"
13' - 0"
4 x 2
SPF #2
16' - 10"
16' - 10"
15' - 8"
13' - 4"
4 x 2
SPF 2100 f1, 8 E
19' - 10"
18' - 4"
16' - 4"
13' - 4"

 
Joist Depth 9-3/8"       LIVE LOAD DETECTION ≤ L/360
 

Live Load
(psf)

Dead Load
(psf)
CHORDS
SPACING O.C.
DIM. (po.)
SPECIE/GRADE
12"
16"
19.2"
24"
50
10
3 x 2
SPF #2
15' - 10"
15' - 4"
14' - 4"
13' - 3"
4 x 2
SPF #2
16' - 10"
16' - 10"
15' - 11"
14' - 9"
4 x 2
SPF 2100 f1, 8 E
19' - 10"
18' - 0"
17' - 0"
15' - 9"
50
15
3 x 2
SPF #2
15' - 10"
15' - 4"
14' - 4"
13' - 3"
4 x 2
SPF #2
16' - 10"
16' - 10"
15' - 11"
14' - 9"
4 x 2
SPF 2100 f1, 8 E
19' - 10"
18' - 0"
17' - 0"
15' - 4"
50
20
3 x 2
SPF #2
15' - 10"
15' - 4"
14' - 4"
13' - 3"
4 x 2
SPF #2
16' - 10"
16' - 10"
15' - 11"
14' - 4"
4 x 2
SPF 2100 f1, 8 E
19' - 10"
18' - 0"
17' - 0"
14' - 4"
50
25
3 x 2
SPF #2
15' - 10"
15' - 4"
14' - 4"
13' - 1"
4 x 2
SPF #2
16' - 10"
16' - 10"
15' - 10"
13' - 6"
4 x 2
SPF 2100 f1, 8 E
19' - 10"
18' - 0"
16' - 7"
13' - 6"
50
30
3 x 2
SPF #2
15' - 10"
15' - 4"
14' - 4"
12' - 7"
4 x 2
SPF #2
16' - 10"
16' - 10"
15' - 3"
12' - 9"
4 x 2
SPF 2100 f1, 8 E
19' - 10"
17' - 11"
15' - 7"
12' - 9"
50
36
3 x 2
SPF #2
15' - 10"
15' - 4"
13' - 9"
11' - 10"
4 x 2
SPF #2
16' - 10"
16' - 4"
14' - 7"
12' - 0"
4 x 2
SPF 2100 f1, 8 E
19' - 10"
17' - 3"
14' - 7"
12' - 0"

 
Joist Depth 9-3/8"       LIVE LOAD DETECTION ≤ L/360
 

Live Load
(psf)

Dead Load
(psf)
CHORDS
SPACING O.C.
DIM. (po.)
SPECIE/GRADE
12"
16"
19.2"
24"
100
10
3 x 2
SPF #2
13' - 3"
12' - 0"
11' - 3"
9' - 8"
4 x 2
SPF #2
14' - 9"
13' - 4"
11' - 9"
9' - 11"
4 x 2
SPF 2100 f1, 8 E
15' - 9"
13' - 9"
11' - 9"
9' - 11"
100
15
3 x 2
SPF #2
13' - 3"
12' - 0"
11' - 2"
9' - 4"
4 x 2
SPF #2
14' - 9"
13' - 3"
11' - 4"
9' - 7"
4 x 2
SPF 2100 f1, 8 E
15' - 9"
13' - 3"
11' - 4"
9' - 7"
100
20
3 x 2
SPF #2
13' - 3"
12' - 0"
10' - 10"
8' - 11"
4 x 2
SPF #2
14' - 9"
12' - 9"
11' - 0"
9' - 2"
4 x 2
SPF 2100 f1, 8 E
15' - 9"
12' - 9"
11' - 0"
9' - 2"
100
25
3 x 2
SPF #2
13' - 3"
12' - 0"
10' - 6"
8' - 7"
4 x 2
SPF #2
14' - 9"
12' - 4"
10' - 8"
8' - 10"
4 x 2
SPF 2100 f1, 8 E
15' - 9"
12' - 4"
10' - 8"
8' - 10"
100
30
3 x 2
SPF #2
13' - 3"
11' - 9"
10' - 2"
8' - 4"
4 x 2
SPF #2
14' - 9"
11' - 11"
10' - 4"
8' - 6"
4 x 2
SPF 2100 f1, 8 E
15' - 4"
11' - 11"
10' - 4"
8' - 6"
100
36
3 x 2
SPF #2
13' - 3"
11' - 4"
9' - 9"
8' - 0"
4 x 2
SPF #2
14' - 9"
11' - 5"
10' - 0"
8' - 2"
4 x 2
SPF 2100 f1, 8 E
14' - 9"
11' - 5"
10' - 0"
8' - 2"
 
 
Joist Depth 9-3/8"       LIVE LOAD DETECTION ≤ L/480
 

Live Load
(psf)

Dead Load
(psf)
CHORDS
SPACING O.C.
DIM. (po.)
SPECIE/GRADE
12"
16"
19.2"
24"
40
10
3 x 2
SPF #2
15' - 10"
15' - 0"
14' - 1"
12' - 11"
4 x 2
SPF #2
16' - 10"
16' - 6"
15' - 7"
14' - 5"
4 x 2
SPF 2100 f1, 8 E
19' - 6"
17' - 7"
16' - 7"
15' - 5"
40
15
3 x 2
SPF #2
15' - 10"
15' - 0"
14' - 1"
12' - 11"
4 x 2
SPF #2
16' - 10"
16' - 6"
15' - 7"
14' - 5"
4 x 2
SPF 2100 f1, 8 E
19' - 6"
17' - 7"
16' - 7"
15' - 5"
40
20
3 x 2
SPF #2
15' - 10"
15' - 0"
14' - 1"
12' - 11"
4 x 2
SPF #2
16' - 10"
16' - 6"
15' - 7"
14' - 5"
4 x 2
SPF 2100 f1, 8 E
19' - 6"
17' - 7"
16' - 7"
15' - 5"
40
25
3 x 2
SPF #2
15' - 10"
15' - 0"
14' - 1"
12' - 11"
4 x 2
SPF #2
16' - 10"
16' - 6"
15' - 7"
14' - 5"
4 x 2
SPF 2100 f1, 8 E
19' - 6"
17' - 7"
16' - 7"
15' - 4"
40
30
3 x 2
SPF #2
15' - 10"
15' - 0"
14' - 1"
12' - 11"
4 x 2
SPF #2
16' - 10"
16' - 6"
15' - 7"
14' - 4"
4 x 2
SPF 2100 f1, 8 E
19' - 6"
17' - 7"
16' - 7"
14' - 4"
40
36
3 x 2
SPF #2
15' - 10"
15' - 0"
14' - 1"
12' - 11"
4 x 2
SPF #2
16' - 10"
16' - 6"
15' - 7"
13' - 4"
4 x 2
SPF 2100 f1, 8 E
19' - 6"
17' - 7"
16' - 4"
13' - 4"

 
Joist Depth 9-3/8"       LIVE LOAD DETECTION ≤ L/480
 

Live Load
(psf)

Dead Load
(psf)
CHORDS
SPACING O.C.
DIM. (po.)
SPECIE/GRADE
12"
16"
19.2"
24"
50
10
3 x 2
SPF #2
15' - 4"
13' - 10"
12' - 11"
12' - 0"
4 x 2
SPF #2
16' - 10"
15' - 5"
14' - 5"
13' - 4"
4 x 2
SPF 2100 f1, 8 E
18' - 0"
16' - 5"
15' - 5"
14' - 3"
50
15
3 x 2
SPF #2
15' - 4"
13' - 10"
12' - 11"
12' - 0"
4 x 2
SPF #2
16' - 10"
15' - 5"
14' - 5"
13' - 4"
4 x 2
SPF 2100 f1, 8 E
18' - 0"
16' - 5"
15' - 5"
14' - 3"
50
20
3 x 2
SPF #2
15' - 4"
13' - 10"
12' - 11"
12' - 0"
4 x 2
SPF #2
16' - 10"
15' - 5"
14' - 5"
13' - 4"
4 x 2
SPF 2100 f1, 8 E
18' - 0"
16' - 5"
15' - 5"
14' - 3"
50
25
3 x 2
SPF #2
15' - 4"
13' - 10"
12' - 11"
12' - 0"
4 x 2
SPF #2
16' - 10"
15' - 5"
14' - 5"
13' - 4"
4 x 2
SPF 2100 f1, 8 E
18' - 0"
16' - 5"
15' - 5"
13' - 6"
50
30
3 x 2
SPF #2
15' - 4"
13' - 10"
12' - 11"
12' - 0"
4 x 2
SPF #2
16' - 10"
15' - 5"
14' - 5"
12' - 9"
4 x 2
SPF 2100 f1, 8 E
18' - 0"
16' - 5"
15' - 5"
12' - 9"
50
36
3 x 2
SPF #2
15' - 4"
13' - 10"
12' - 11"
11' - 10"
4 x 2
SPF #2
16' - 10"
15' - 5"
14' - 5"
12' - 0"
4 x 2
SPF 2100 f1, 8 E
18' - 0"
16' - 5"
14' - 7"
12' - 0"

 
Joist Depth 9-3/8"       LIVE LOAD DETECTION ≤ L/480
 

Live Load
(psf)

Dead Load
(psf)
CHORDS
SPACING O.C.
DIM. (po.)
SPECIE/GRADE
12"
16"
19.2"
24"
100
10
3 x 2
SPF #2
12' - 0"
10' - 9"
10' - 0"
8' - 10"
4 x 2
SPF #2
13' - 4"
12' - 1"
11' - 4"
9' - 11"
4 x 2
SPF 2100 f1, 8 E
14' - 3"
12' - 9"
11' - 9"
9' - 11"
100
15
3 x 2
SPF #2
12' - 0"
10' - 9"
10' - 0"
8' - 10"
4 x 2
SPF #2
13' - 4"
12' - 1"
11' - 4"
9' - 7"
4 x 2
SPF 2100 f1, 8 E
14' - 3"
12' - 9"
11' - 4"
9' - 7"
100
20
3 x 2
SPF #2
12' - 0"
10' - 9"
10' - 0"
8' - 10"
4 x 2
SPF #2
13' - 4"
12' - 1"
11' - 0"
9' - 2"
4 x 2
SPF 2100 f1, 8 E
14' - 3"
12' - 9"
11' - 0"
9' - 2"
100
25
3 x 2
SPF #2
12' - 0"
10' - 9"
10' - 0"
8' - 7"
4 x 2
SPF #2
13' - 4"
12' - 1"
10' - 8"
8' - 10"
4 x 2
SPF 2100 f1, 8 E
14' - 3"
12' - 4"
10' - 8"
8' - 10"
100
30
3 x 2
SPF #2
12' - 0"
10' - 9"
10' - 0"
8' - 4"
4 x 2
SPF #2
13' - 4"
11' - 11"
10' - 4"
8' - 6"
4 x 2
SPF 2100 f1, 8 E
14' - 3"
11' -11"
10' - 4"
8' - 6"
100
36
3 x 2
SPF #2
12' - 0"
10' - 9"
9' - 9"
8' - 0"
4 x 2
SPF #2
13' - 4"
11' - 5"
10' - 0"
8' - 2"
4 x 2
SPF 2100 f1, 8 E
14' - 3"
11' - 5"
10' - 0"
8' - 2"

Top of Page

Controlled Vibration Maximum Span Charts – 11-7/8” Joist Depth

Joist Depth 11-7/8"       LIVE LOAD DETECTION ≤ L/360
 

Live Load
(psf)

Dead Load
(psf)
CHORDS
SPACING O.C.
DIM. (po.)
SPECIE/GRADE
12"
16"
19.2"
24"
40
10
3 x 2
SPF #2
16' - 10"
16' - 10"
16' - 10"
16' - 10"
4 x 2
SPF #2
18' - 10"
18' - 10"
18' - 10"
18' - 6"
4 x 2
SPF 2100 f1, 8 E
22' - 10"
22' - 1"
21' - 2"
19' - 11"
40
15
3 x 2
SPF #2
16' - 10"
16' - 10"
16' - 10"
16' - 10"
4 x 2
SPF #2
18' - 10"
18' - 10"
18' - 10"
17' - 8"
4 x 2
SPF 2100 f1, 8 E
22' - 10"
22' - 1"
21' - 2"
19' - 11"
40
20
3 x 2
SPF #2
16' - 10"
16' - 10"
16' - 10"
16' - 2"
4 x 2
SPF #2
18' - 10"
18' - 10"
18' - 10"
17' - 1"
4 x 2
SPF 2100 f1, 8 E
22' - 10"
22' - 1"
21' - 2"
19' - 4"
40
25
3 x 2
SPF #2
16' - 10"
16' - 10"
16' - 10"
15' - 5"
4 x 2
SPF #2
18' - 10"
18' - 10"
18' - 2"
16' - 5"
4 x 2
SPF 2100 f1, 8 E
22' - 10"
22' - 1"
20' - 11"
18' - 7"
40
30
3 x 2
SPF #2
16' - 10"
16' - 10"
16' - 10"
14' - 10"
4 x 2
SPF #2
18' - 10"
18' - 10"
17' - 7"
15' - 10"
4 x 2
SPF 2100 f1, 8 E
22' - 10"
22' - 1"
20' - 1"
17' - 8"
40
36
3 x 2
SPF #2
16' - 10"
16' - 10"
16' - 0"
14' - 1"
4 x 2
SPF #2
18' - 10"
18' - 4"
16' - 11"
15' - 1"
4 x 2
SPF 2100 f1, 8 E
22' - 10"
21' - 3"
19' - 2"
15' - 3"

 
Joist Depth 11-7/8"       LIVE LOAD DETECTION ≤ L/360
 

Live Load
(psf)

Dead Load
(psf)
CHORDS
SPACING O.C.
DIM. (po.)
SPECIE/GRADE
12"
16"
19.2"
24"
50
10
3 x 2
SPF #2
16' - 10"
16' - 10"
16' - 10"
15' - 8"
4 x 2
SPF #2
18' - 10"
18' - 10"
18' - 10"
17' - 1"
4 x 2
SPF 2100 f1, 8 E
22' - 10"
21' - 7"
20' - 5"
19' - 0"
50
15
3 x 2
SPF #2
16' - 10"
16' - 10"
16' - 10"
15' - 5"
4 x 2
SPF #2
18' - 10"
18' - 10"
18' - 2"
16' - 5"
4 x 2
SPF 2100 f1, 8 E
22' - 10"
21' - 7"
20' - 5"
18' - 7"
50
20
3 x 2
SPF #2
16' - 10"
16' - 10"
16' - 10"
14' - 10"
4 x 2
SPF #2
18' - 10"
18' - 10"
17' - 7"
15' - 10"
4 x 2
SPF 2100 f1, 8 E
22' - 10"
21' - 7"
20' - 1"
17' - 8"
50
25
3 x 2
SPF #2
16' - 10"
16' - 10"
16' - 2"
14' - 2"
4 x 2
SPF #2
18' - 10"
18' - 6"
17' - 1"
15' - 2"
4 x 2
SPF 2100 f1, 8 E
22' - 10"
21' - 5"
19' - 4"
15' - 5"
50
30
3 x 2
SPF #2
16' - 10"
16' - 10"
15' - 7"
13' - 7"
4 x 2
SPF #2
18' - 10"
17' - 11"
16' - 7"
14' - 7"
4 x 2
SPF 2100 f1, 8 E
22' - 10"
20' - 7"
18' - 8"
14' - 10"
50
36
3 x 2
SPF #2
16' - 10"
16' - 7"
14' - 11"
12' - 11"
4 x 2
SPF #2
18' - 10"
17' - 5"
15' - 11"
14' - 0"
4 x 2
SPF 2100 f1, 8 E
22' - 10"
19' - 9"
17' - 11"
14' - 1"

 
Joist Depth 11-7/8"       LIVE LOAD DETECTION ≤ L/360
 

Live Load
(psf)

Dead Load
(psf)
CHORDS
SPACING O.C.
DIM. (po.)
SPECIE/GRADE
12"
16"
19.2"
24"
100
10
3 x 2
SPF #2
15' - 8"
14' - 2"
12' - 8"
10' - 10"
4 x 2
SPF #2
17' - 8"
15' - 5"
13' - 9"
11' - 8"
4 x 2
SPF 2100 f1, 8 E
19' - 0"
16' - 11"
13' - 10"
11' - 8"
100
15
3 x 2
SPF #2
15' - 8"
14' - 0"
12' - 4"
10' - 5"
4 x 2
SPF #2
17' - 4"
15' - 0"
13' - 5"
11' - 3"
4 x 2
SPF 2100 f1, 8 E
19' - 0"
15' - 2"
13' - 5"
11' - 3"
100
20
3 x 2
SPF #2
15' - 8"
13' - 7"
12' - 0"
10' - 1"
4 x 2
SPF #2
17' - 1"
14' - 7"
13' - 0"
10' - 11"
4 x 2
SPF 2100 f1, 8 E
19' - 0"
14' - 10"
13' - 0"
10' - 11"
100
25
3 x 2
SPF #2
15' - 8"
13' - 2"
11' - 8"
9' - 9"
4 x 2
SPF #2
16' - 9"
14' - 3"
12' - 7"
10' - 7"
4 x 2
SPF 2100 f1, 8 E
18' - 11"
14' - 5"
12' - 7"
10' - 7"
100
30
3 x 2
SPF #2
15' - 5"
12' - 10"
11' - 4"
9' - 5"
4 x 2
SPF #2
16' - 5"
13' - 11"
12' - 2"
10' - 4"