4 ½" EMERCOR STRUCTURAL INSULATED PANEL (SIP)
Transverse Loading
(OSB/Drywall)

 

 

*For Roof Applications with 4 ½" OSB/Drywall panel use L/360

Live Load
(psf)

Dead Load
(psf)

Maximum Allowable Deflection

L/180

L/240

L/360

L/480

20

10

7' - 08"

7' - 00"

6' - 01"

5' - 06"

20

15

7' - 08"

7' - 00"

6' - 01"

5' - 06"

20

20

7' - 03"

7' - 00"

6' - 01"

5' - 06"

40

10

5' - 10"

5' - 06"

4' - 10"

4' - 05"

40

15

5' - 03"

5' - 03"

4' - 10"

4' - 05"

40

20

4' - 10"

4' - 10"

4' - 10"

4' - 05"

50

10

4' - 10"

4' - 10"

4' - 06"

4' - 01"

50

15

4' - 06"

4' - 06"

4' - 06"

4' - 01"

50

20

4' - 02"

4' - 02"

4' - 02"

4' - 01"

100

10

2' - 08"

2' - 08"

2' - 08"

2' - 08"

100

15

2' - 06"

2' - 06"

2' - 06"

2' - 06"

100

20

2' - 05"

2' - 05"

2' - 05"

2' - 05"
  1. The panel deflection listed above is the instantaneous deflection due to live load. The dead load deflection can be calculated from the ratio of (DL/LL). The long-term deflection of dead load is about 2.5 times its instantaneous deflection in dry service conditions.
  2. The panels should be used in dry service conditions only.