Span.

Tie beam, T.

Queen Post, QP.

Principal

Rafters,

PR.

Straining

Beam,

SB.

Struts, S.

Purlins, P.

Common

Rafters,

CR.

32 ft.

10 by 4½

4½ by 4

5 by 4½

6¾ by 4½

3¾ by 2¼

8 by 4¾

3½by 2

34 "

10 " 5

5 " 3½

5 " 5

6¾ " 5

4 " 2½

8¼ " 5

3¾ " 2

36 "

10½" 5

5 " 4

5 " 5¾

7 " 5

4¼ " 2½

8½ " 5

4 " 2

38 "

10 " 6

6 " 3¾

6 " 6

7¼ " 6

4½ " 2½

8½ " 5

4 " 2

40 "

11 " 6

6 " 4

6 " 6

8 " 6

4½ " 2½

8¾ " 5

4¼ " 2

42 "

11½ " 6

6 " 4½

6¼ " 6

8¼ " 6

44 " 2f

8¾" 5¼

4½ " 2

44 "

12 " 6

6 " 5

6½ " 6

8½ " 6

4½ " 3

9 " 5

4¾ " 2

46 "

12½" 6

6 " 5½

7 " 6

9 " 6

4¾ " 3

9 " 5½

5 " 2