Tables OF SCANTLING.

Table of the Scantlings recommended by Tredgold for Single or Bridging Joists of Baltic pine for different bearings from 5 to 25 feet - the distance from centre to centre of the joists being 12 inches.

Length of Bearing in

Feet.

Breadth, 1 1/2 in.

Breadth, 2 in.

Breadth, 2 1/2 in.

Breadth, 3 in.

Breadth, 4 in.

Depth in inches.

Depth in inches.

Depth in inches.

Depth in inches.

Depth in inches.

5

5 3/4

5 1/4

4 3/4

4 3/8

4

6

6 1/4

5 3/4

5 3/8

5

4 1/2

8

7 3/4

7

6 1/2

6 1/4

5 3/4

10

9

8

7 1/2

7

6 1/2

12

10

9 1/4

8 1/2

8

7 1/4

14

11

10

9 1/2

9

8

16

12 1/4

11

10 1/2

9 3/4

8 7/8

18

13 1/4

12

11 1/4

10 1/2

9 1/2

20

14 1/4

13

12

11 1/4

10 1/4

22

15

13 3/4

12 3/4

12

11

24

16

14 1/2

13 1/2

12 3/4

11 3/4

25

16 1/2

15

14

13

12

Table of Scantlings recommended by Tredgold for Binding Joists of Baltic pine for different spans from 5 to 20 feet when the distance from centre to centre is 6 feet.

Length of Bearing in Feet.

Depth, 6 in.

Depth, 7 in.

Depth, 8 in.

Depth, 9 in.

Depth,

10 in.

Depth,

11 in.

Depth, 12 in.

Breadth, inches.

Breadth, inches.

Breadth, inches.

Breadth, inches.

Breadth, inches.

Breadth, inches.

Breadth, inches.

5

4 3/4

3

2

6

6 3/4

4

3

2

7

.......

5 1/2

4

2 3/4

2

8

..

7

5

3 3/4

2 3/4

2

10

..

......

8

5 1/2

4

3

2 1/2

12

..

..

.......

8

6

4 1/2

3 1/2

Depth, 13 in.

Depth, 14 in.

Depth. 15 in.

Breadth, inches.

Breadth, inches.

Breadth, inches.

14

..

..

..

....

8

5 3/4

4 1/2

16

4 1/2

3 3/4

3 1/4

..

10 1/4

7 3/4

6

18

5 3/4

4 3/4

4

..

......

10

7 1/2

20

7 1/4

6

4 3/4

..

..

.....

9 1/2

Table of the Scantlings for Girders of Baltic pine recommended by Tredgold for different bearings from 10 to 36 feet - girders 10 feet apart from middle to middle.

Length of

Bearing in

Feet.

Depth, 10 in.

Depth, 11 in.

Depth, 12 in.

Depth, 13 in.

Depth, 14 in.

Depth, 15 in.

Depth,

16 in.

Depth, 17 in.

Depth, 18 in.

Breadth, inches.

Breadth, inches.

Breadth, inches.

Breadth, inches.

Breadth, inches.

Breadth, inches.

Breadth, inches.

Breadth, inches.

Breadth, inches.

10

7 1/2

5 1/2

4 1/4

3 1/2

2 3/4

12

10 1/2

8

6

5

3 3/4

3 1/4

14

14 1/2

10 3/4

8 1/2

6 3/4

5 1/4

4 1/2

3 1/2

16

18 3/4

14

11

8 3/4

7

5 3/4

4 3/4

4

18

.....

17 3/4

14

11

8 3/4

7 1/4

6

5

4

20

..

......

17

13 1/2

10 3/4

9

7 1/4

6

5 1/4

22

..

..

16 1/2

13

10 3/4

8 3/4

7 1/2

6 1/4

24

..

..

19 1/2

15 1/2

12 3/4

10 1/2

8 3/4

7 1/2

26

..

..

..

.....

18 1/4

15

12 1/4

10 1/4

8 1/2

28

..

..

..

..

....

17 1/4

14 1/4

11 3/4

10

Depth, 19 in.

Depth, 20 in.

Depth,

21 in.

Breadth.

Breadth.

Breadth.

30

9 3/4

8 1/2

7 1/4

..

..

19 3/4

16 1/4

13 1/2

11 1/2

32

11

9 1/2

8 1/4

..

..

....

18 1/2

15 1/2

13

34

12 1/2

10 3/4

9 1/2

..

..

..

..

17 1/2

14 3/4

36

14

12

10 1/2

..

..

..

..

19 1/2

16 1/2

Tredgold's Rules for Scantling of Floor Timbers - L = Length in feet. B = Breadth in inches. D = Depth in inches.

Bridqinq or Common Joists (12 inches from centre to centre). -

Trimmers and Trimming Joists (see p. 132). Binding Joists (6 feet apart).

Trimmers and Trimming Joists (see p. 132). Binding Joists (6 feet apart).

Ceiling Joists (12 inches from centre to centre).

Ceiling Joists (12 Inches From Centre To Centre)

When ceiling joists are of the usual thickness of 2 inches, half the length of bearing in feet will give the depth in inches.

When ceiling joists are of the usual thickness of 2 inches, half the length of bearing in feet will give the depth in inches.