Dimensioned lumber is let into the edges of door and window openings for added strength and as nailers, and across the tops and bottoms of walls as sills and plates.

One of many possible overhang details with panels over a timber frame structure.

Winter Panel provides optional horizontal wire chases to make wiring a snap. There are also a number of simple techniques for getting up to switches and wall-mounted fixtures.

One alternative to in-wall wiring is the baseboard wiring chase. Several systems are available commercially, allowing for easy maintenance and upgrade of data, phone, tv and stereo wiring.

Allowable Transverse Loading - Curtainwall Panel
Pounds/square foot at L/240 deflection; Spans to right of line (7'-10') for wall use only. 

Span

2'

3'

4'

5'

6'

7'

8'

9'

10'

3 1/2" Core

81.1

52.1

37.3

28.2

22.0

17.5

14.2

11.6

9.6

4 1/2" Core

103.1

65.9

46.7

34.9

26.9

21.2

17.0

13.8

11.3

Allowable Transverse Loading - Structural Panel
Pounds/square foot, deflection as shown; 3 1/2" Core/4 1/2" Core 

Span

L/180

L/240

L/360

L/480

3 1/2" Core

4'

103

102

68

51

5'

83

77

51

38

6'

69

60

40

30

7'

55

46

30

23

8'

47

37

24

18

9'

39

30

19

15

10'

32

25

16

12

11'

27

21

13

10

12'

23

17

11

9

4 1/2" Core

4'

129

129

88

66

5'

103

100

67

50

6'

86

79

52

39

7'

68

60

39

29

8'

59

48

31

24

9'

53

40

26

20

10'

43

33

21

16

11'

36

29

19

14

12'

31

24

15

11

Combined Wall Loading 4 1/2" Core Structural Panel
(Axial and Transverse) 

Span

Wind Loads (PSF)

5.0

10.0

15.0

20.0

25.0

30.0

35.0

40.0

45.0

50.0

8'

4203

3562

3071

2656

2291

1961

1657

1375

1109

858

9'

4047

3342

2801

2345

1943

1579

1245

934

642

366

10'

3885

3113

2520

2020

1580

1182

816

475

155

11'

3716

2873

2227

1681

1201

767

368

12'

3278

2430

1779

1230

747

310

13'

2648

1865

1264

758

312

Allowable load (in pounds per
lineal foot of wall) at L/180 deflection
Note: "empty cells" imply no
safe wall load for these
combinations of span and wind load. 

14'

2153

1424

865

393

15'

1758

1074

550

107

16'

1438

793

297

Combined Wall Loading 3 1/2" Core Structural Panel
(Axial and Transverse) 

Span

Wind Load (PSF)

5.0

10.0

15.0

20.0

25.0

30.0

35.0

40.0

45.0

50.0

8'

2959

2407

1984

1627

1313

1029

767

524

296

80

9'

2825

2218

1752

1359

1013

700

413

145

10'

2680

2013

1502

1070

690

347

11'

2529

1800

1240

768

352

12'

2196

1460

895

419

13'

1741

1060

538

97

Allowable load (in pounds per
lineal foot of wall) at L/180 deflection
Note: "empty cells" imply no
safe wall load for these
combinations of span and wind load. 

14'

1385

749

262

15'

1101

504

16'

871

307