Span.

Tie beam, T.

Queen Post, QP.

Princesses PP.

Principal

Rafters,

PR.

Straining

Beam,

SB.

Struts, S.

Purlins, P.

Common

Rafters,

CR.

48 ft.

11 by 6

6 by 5

6 by 2

7 by 6

8 by 6

4 by 2

8 by 5

4 by 2

50 "

12 " 6

6 " 6

6 " 2

8 " 6

8 "6

44 " 2

8 "5

41 " 2

52 "

12 " 6

6 " 6

6 " 2

9 " 6

8 "6

4 " 2

8" 5

41 " 2

54 "

12 " 7

7 " 6

7 " 2

6 " 7

9 " 6

4 " 2

8 " 5

4 " 2

56 "

12 " 8

7 " 6

7 " 2

7 " 7

9 "6

5 " 2

8 " 5

4 " 2

58 "

12 " 8

7 " 7

7 " 2

8 " 7

9 "7

5 " 2

9 "5

4" 2

60 "

12 " 9

7" 7

7 " 3

9 " 7

10 "7

5 "3

9 "5

4 " 2