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

Live Load
(psf)

Dead Load
(psf)

Maximum Allowable Deflection

L/180

L/240

L/360

L/480

20

10

8' - 09"

8' - 00"

7' - 00"

6' - 04"

20

15

8' - 09"

8' - 00"

7' - 00"

6' - 04"

20

20

8' - 09"

8' - 00"

7' - 00"

6' - 04"

40

10

7' - 00"

6' - 04"

5' - 06"

5' - 00"

40

15

7' - 00"

6' - 04"

5' - 06"

5' - 00"

40

20

7' - 00"

6' - 04"

5' - 06"

5' - 00"

50

10

6' - 06"

5' - 11"

5' - 02"

4' - 08"

50

15

6' - 06"

5' - 11"

5' - 02"

4' - 08"

50

20

6' - 06"

5' - 11"

5' - 02"

4' - 08"

100

10

4' - 03"

4' - 03"

4' - 01"

3' - 09"

100

15

4' - 01"

4' - 01"

4' - 01"

3' - 09"

100

20

3' - 11"

3' - 11"

3' - 11"

3' - 09"
  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.