F SPAN IN FEET.

Area of seet'n per sq. foot of floor.

Area of Section per square foot of floor for each wood.

. .10

. .11

. .12

. .13

. .14

. .15

Hemlock

Sprue or

W. Pine.

White

Oak.

Georgia Pine.

Inches.

Inches.

Inches.

Inches.

Inches.

9

9

...

...

...

9

...

9

...

...

9

...

...

9

...

10.3

10.3

...

...

...

10.3

...

10.3

...

...

10.3

...

...

10.3

...

12

12

...

...

...

12

12

...

...

...

12

...

12

...

...

12

...

12

...

...

9

...

...

...

...

12

...

...

12

...

12

...

...

12

...

13.7

13.7

...

...

...

13.7

...

13.7

...

...

10.3

...

...

....

10.3

13.7

...

...

13.7

...

16

16

...

...

...

16

...

16

...

...

12

...

...

...

12

12

...

...

...

12

16

...

...

16

...

13.7

...

...

...

13.7

16

...

...

...

16

13.5

13.5

...

...

...

Table XII. Wooden Floor-Beams

[Calculated For 90 Founds Per Square Foot Of Floor.]

Table XII. Wooden Floor Beams

( Continued).

Table XII Wooden Floor Beams 100265

Table XII(Continued).

Table XII

XIII. Braced Sideways

XIII. Braced Sideways

Table XIII. Wooden Girders, Braced Sideways

Table XIII. Wooden Girders, Braced Sideways

XIV For Floors

or Iron Beams; but length of span in feet must not exceed twice the depth

XIV For Floors

Table XIV. Iron I Beams For Floors

Table XIV. Iron I Beams For Floors

For Steel Beams, spone one-quarter listrnce (between in centres) larger than for Iron Beams; but length of span in feet must not exceed twice the depth of beam in inches, or deflection will be too great for plastering.

XIX. Tables XX To XXV

II ARE. UNIFORM ABOVE AND BELOW THE NEUTRAL AXIS.

MANNER OF LOADING.

TO OBTAIN SAFE LOAD IN FOUNDS.

LENGTH OF SPAN

NOT TO CRACK PLASTERING

MUST NOT EXCEED.

GREATEST ACTUAL DEFLECTION WILL BE.

For Iron.

For Steel.

For Iron.

For Steel.

XIX Tables XX To XXV 100271 )

w1 = w11 = v/2 2/3. L or

L=2 3/16.d

L = l7/8.d

δ=L2/72 3/4.d

δ= L2/62 1/2.d

w1 + w11 =v/1 1/3. L

XIX Tables XX To XXV 100272

w111 = w1111 = v/2. L or: -

L = 2. d

L = l3/4.d

δ = L2/67.d

δ = L2/57 2/3.d

w111+w1111 = v/L

ables XX to XXV; u = uniform load in lbs.; w = centre load in lbs.; w1,=-. w11also w111=conoencarfully, as steel varies greatly in strength. For equal deflections of steel and iron, add hetransverse values, the moduli of rupture used were: for iron, 12000 pounds per square as follows: - In case of uniform load deduct entire weight of beam; in case of centre m each load 3/8 the weight of beam; in case of loads at quarters of span, deduct from same dimensions. In ordering steel or iron, give either the required dimensions or the ble represent the following Rolling Mills: B - PHCENIX IRON COMPANY, Philadelphia, Pa. D - Pottsville'iron And Steel Company, Pottsville, Pa. pa. F - Passaic Rolling Mill Company, Passaic, N. J.

;es the Mill which rolls the exact shape given in the Table; the other letters give the

Tee

Tee

Zee

Zee

Deck Beam

Deck Beam

Table XIX. Explaining Use Of Tables XX TO XXV

How to Use Transverse Value (v) for Sections which and Uniform above and below the Neutral Axis.

MANNER OF LOADING.

TO OUTAIN SAFE LOAD

IN POUNDS.

LENGTH NOT TO RACE PLASTERING MUST NOT EXCEED.

CHEATEST ACTUAL

DEFLECTION WILL BE

For Iron.

For Steel.

For Iron.

For Steel.

Table XIX Explaining Use Of Tables XX TO XXV 100276

u = v/L

L = 2 1/4.d

L = 2.d

δ = L2/75.d

δ = L2/64 1/2.d

Table XIX Explaining Use Of Tables XX TO XXV 100277

w = v/2.L

L = 2 4/5.d

L = 2 2/5.d

δ = L2/93 3/4.d

δ = L2/80 2/3.d

MANNER OF LOADING.

TO OBTAIN SAFE LOAD IN POUNDS.

LENGTH OF SPAN

NOT TO CRACK PLASTERING

BUST SOT EXCEED,

GREATEST ACTUAL REFLECTION WILL BE.

For Iron.

For Steel.

For Iron.

For Steel.

Table XIX Explaining Use Of Tables XX TO XXV 100278

w1 = w11 = v/2 2/3.L or: -

L=2 3/16.d

L = 1 7/8.d

δ = L2/72 3/4.d

δ =L2/62 1/2.d

w1+w11 = v/1 1/3.L

Table XIX Explaining Use Of Tables XX TO XXV 100279

w111=w1111 = v/2.L or: -

L = 2.d

L. = l 3/4.d

δ = L2/67.d

δ =L2/57 2/3.d

w111+w1111=v/L

d = depth in Indies; L =length in feet; δ = deflection in Inches; v = transverse value, as given in Tables XX to XXV; n : uniform load in lbs.; w=centre load in lbs.; w1 - w111. also w111 = w1111 concen-trated; loads in lbs.

Note. - It the transverse values (w), given for steel, are used, teal each piece carefully, as steel varies greatly in strength. For equal deflections of steel and iron, add only 7 1/2% to iron transverse values, instead of 2 i as given in Tables. In calculating the transverse values, the moduli of rupture used were: for iron, 12000 pounds per square inch,and for steel, 15000 pounds per square inch.

From the "Safe Load" as obtained above, deduct the weight of beam in pounds, as follows: - In ease of uniform load deduct entire weight of beam; in case of centre load, deduct one-half the weight of beam; in case of loads at thirds of span, deduct from each load 3/5 the weight, of beam; in case of loads at quarters of span, deduct from each load 1/2 the weight of be beam,

Steel sections will be slightly heavier (about 1%) than iron sections of exactly the same dimensions. In ordering steel or iron, give either the required dimensions or the required weight of section, never both.

The capital letters in the first column headed -Mills Rolling Shape" in each Table represent the following Rolling Mills: A - New Jersey Steel And Iron Company, Trenton, N. J. R - Phoinix Iron Company, Philadelphia, Pa.

C - Pencoyd Iron Works, Philadelphia, Pa. D - Pottsville Iron And Steel Company, Pottsville, Pa.

E - Union Iron Mills And Homestead Steel Works, Pittsburgh, Pa. F - Passaic Rolling Mill Company, Passaic, N. J.

In the columns headed "Mills Rolling Shape" the first letter on each line indicates the Mil! which rolls the exact shape given in the Table; the other letters give the Mills which roll an approximately similar shape.

In getting the areas of parts of sections, they were taken as shown below: beam.

Table XIX Explaining Use Of Tables XX TO XXV 100280Channel

Channel

Angle

Angle

Tee

Tee

Cee

Cee

Deck Beam

Deck Beam XX Steel I Beams

of this Table, see Table XIX.)

tal to Web.Deck Beam XX Steel I Beams 100286

Resistance.

(r)

Square of Radius of Gyration.

(ρ2)

Transverse Value (v) in lbs.

For Iron.

For Steel.

6

60.67

1320000

1650000

6

60.42

1160000

1450000

6.8

61.99

990000

1238000

4.6

59.68

917000

1146000

9

34.80

552000

690000

8.5

35.32

748000

935000

7.5

35.15

460000

575000

8

32.52

864000

1080000

9

31.24

800000

1000000

2.5

34.70

740000

925000

4.5

31.47

655000

819000

0.4

35.20

563000

704000

0.5

35.76

556000

695000

7.3

34.40

458000

573000

3.5

23.32

508000

635000

3

22.60

504000

630000

7

23.35

376000

470000

5.7

18.92

454000

567000

8.7

22.46

510000

637000

7.1

22.60

377000

471000

6.9

23.98

375000

469000

6.3

21.80

290000

363000

8.2

24.22

306000

382000

4.5

17.49

356000

445000

5.3

17.77

282000

353000

.4

17.39

251000

314000

.2

18.42

250000

312000

7.5

13.91

300000

375000

4.7

15.52

278000

347000

5.2

15.35

258000

322000

9.7

16.40

237000

297000

2

12.63

336000

420000

5.3

11.70

282000

353000

5.5

12.23

268000

335000

6

11.83

208000

260000

5.4

13.10

211000

264000

4.9

13.16

199000

249000

0.9

13.41

167000

209000

2.6

8.64

181000

226000

1

10.44

168000

210000

Axis Parallel to Web.Deck Beam XX Steel I Beams 100287

Moment of Intertia.

(r)

Moment of Resistance.

(r)

Square of Radius of Cyration.

(ρ2)

Transverse Value (v) in lbs.

For Iron.

For Steel.

46.50

13.78

1.71

110000

137800

51.78

16.57

2.16

132600

165700

26.62

8.87

1.33

71000

88700

31.50

10.08

1.64

80600

100800

15.29

6.12

1.02

49000

61200

27.46

9.55

1.37

76000

95500

11.64

4.66

.94

37000

46600

40.84

13.90

1.62

111200

139000

29.90

10.29

1.25

82300

103000

33.79

12.12

1.69

97000

121000

20

7.50

1.02

60000

75000

18.34

7.34

1.22

58700

73400

16.91

6.60

1.17

52800

66000

13.13

5.34

1.05

42700

53400

25.41

9.24

1.52

74000

92400

20.90

7.96

1.23

63700

80000

11.54

4.82

.93

38500

48200

15.50

6.09

.86

48700

61000

24.08

8.76

1.42

70100

87600

12.98

5.46

1.04

43700

54600

16.76

6.10

1.43

49000

61000

8.74

4

.87

32000

40000

11.66

4.44

1.23

35500

44400

15.80

6.32

1.18

50500

63200

9.43

4.19

.90

33500

41900

8.01

3.53

.85

28200

35300

8.09

3.59

.91

28700

35900

11.30

4.74

.83

37900

47400

10.64

4.60

.96

36800

46000

11.08

4.79

1.05

38300

48000

8.09

3.69

.90

29500

36900

23.16

8.62

1.54

69000

86000

14

5.67

1.02

45400

56700

11.23

4.99

.91

40000

49900

7.14

3.30

.72

26400

33000

8.44

3.86

.92

30900

38600

7.35

3.27

.86

26000

32700

4.92

2.46

.70

19700

24600

6.96

3.25

.67

26000

32500

7.55

3.35

.93

26800

33500

Table XX. List Of Iron And Steel I Beams

(For Information- as to the Use of This Table, see Table XIX.)

MILLS ROLLING SEALE

Depth of Beam. (d)

Weight per

Yard.

Width of

Fiancee. (b)

Thickness of

Web.

Area of each Flange,

Area of Web.

Total Area.

(a)

Axis Normal to Web.Table XX List Of Iron And Steel I Beams 100288

Axis Parallel to Web.Table XX List Of Iron And Steel I Beams 100289

Moment of

Intertia.

(r)

Moment of

Restance.

(r)

square of

Resistanc

ρ2

Transverse Value (v) in lbs.

Moment of

Intertia

(r)

Moment of Resistance

(r)

Square of

Redins. of

Gymlton

(ρ2)

Transverse Value (v) in lbs.

For Iron.

For Steel.

For Iron.

For Steel.

A.B.........

20

272

6.75

0.69

7.87

11.46

27.20

1650.3

165

60.67

1320000

1650000

46.50

13.78

1.71

110000

137800

E...........

20

240

7

0.60

6.68

10.64

24

1450

145

60.42

1160000

1450000

51.78

16.57

2.16

132600

165700

A,B.........

20

200

6

0.50

5.65

8.67

19.97

1238

123.8

61.99

990000

1288000

26.62

8.87

1.33

71000

88700

E...........

20

192

6.25

0.50

5.09

9.02

19.20

1146

114.6

59.68

917000

1146000

31.50

10.08

1.64

80600

100800

A.F.........

15 9/16

150

5

0.50

4.34

6.36

15.04

523.5

69

34.80

552000

690000

15.29

6.12

1.02

49000

61200

A.F.................

15 1/8

200

5.75

0.60

6.44

7.11

20.02

707.1

93.5

35.32

748000

935000

27.46

9.55

1.37

76000

95500

A...........

15 1/8

125

5

0.42

3.37

5.62

12.36

434.5

57.5

35.15

460000

575000

11.64

4.66

.94

37000

46600

D...................

15

250

5.875

0.875

7.22

10.56

25

813

108

32.52

864000

1080000

40.84

13.90

1.62

111200

139000

E...........

15

240

5.81

0.93

6.29

11.42

24

750

100

31.24

800000

1000000

29.90

10.29

1.25

82300

103000

D,B,C,E....

15

200

5.56

0.625

8.06

7.86

20

694

92.5

34.70

740000

925000

33.79

12.12

1.69

97000

121000

E...........

15

195

5.33

0.77

4.84

9.82

19.50

614

81.5

31.47

655000

819000

20

7.50

1.02

60000

75000

D,B,E.......

15

150

5

0.47

4.47

6.0G

15

528

70.4

35.20

563000

704000

18.34

7.34

1.22

58700

73400

C...........

15

145

5.125

0.44

4.48

5.59

14.55

621.2

69.5

35.70

556000

695000

16.91

6.60

1.17

52800

66000

D,B,E.......

15

125

4.875

0.44

3.35

5.80

12.50

430

57.3

34.40

458000

573000

13.13

5.34

1.05

42700

58400

A..........

12 5/16

170

5.50

0.60

5.47

6.83

16.77

391.2

63.5

23.32

508000

635000

25.41

9.24

1.52

74000

92400

F...........

12 1/4

170

5.25

0.66

5.66

5.88

17

385

63

22.60

504000

630000

20.90

7.96

1.23

63700

80000

A,F.........

12 1/2

125

4.79

0.47

3.78

4.77

12.33

288

47

23.35

376000

470000

11.54

4.82

.93

38500

48200

E...........

12

180

5.09

0.96

4.26

9.48

18

340

56.7

18.92

454000

567000

15.50

6.09

.86

48700

61000

B,C,D.......

12

170

5.50

0.59

6.77

5.4G

17

381.9

63.7

22.46

510000

637000

24.08

8.76

1.42

70100

875000

B,D,E.......

12

125

4.75

0.49

3.80

4.90

12.50

282.6

47.1

22.60

377000

471000

12.38

5.46

1.04

43700

54600

A,C.........

12

120

5.50

0.39

3.87

3.99

11.73

281.3

46.9

23.98

375000

469000

16.76

6.10

1.43

49000

61000

D...........

12

100

4.44

0.44

2.71

4.58

10

218

36.3

21.80

290000

363000

8.74

4

.87

32000

40000

A,B,E.......

12

96

5.25

0.31

3.09

3.28

9.46

229.2

38.2

24.22

306000

382000

11.66

4.44

1.23

35500

44400

A,B,C,D,E,F,

101

135

5

0.47

4.84

3.68

13.36

238.7

44.5

17.49

356000

445000

15.80

0.32

1.18

50500

63200

A,B,C,D,F...

10 1/2

105

4.50

0.375

3.67

3.10

10.14

185.6

85.3

17.77

282000

353000

9.43

4.19

.90

33500

41900

E...........

10 1/2

95

4.54

0.41

2.96

3.58

9.50

165

31.4

17.39

251000

314000

8.01

3.53

.85

28200

35300

A,B,C,D,F...

10 1/2

90

4.50

0.31

3.11

2.68

8.90

104

31.2

18.42

250000

312000

8.09

3.59

.91

28700

35900

E...........

10

135

4.77

0.77

3.67

6.16

13.50

187

37.5

13.91

300000

375000

11.30

4.74

.83

37900

47400

C ...........

10

112

4.625

0.50

3.61

3.95

11.17

173.6

31.7

15.52

278000

347000

10.64

4.60

.96

36800

46000

D...........

10

105

1.625

0.50

3.24

4.02

10.50

161

32.2

15.35

258000

322000

11.08

4.79

1.05

38300

48000

C,D,E.......

10

90

4.375

0.34

3.14

2.76

9.04

148.3

29.7

16.40

237000

297000

8.09

3.69

.90

29500

36900

B,E.........

9

150

5.375

0.60

5.59

3.82

15

189.1

42

12.63

336001

420000

23.16

8.62

1.54

69000

86000

E ...........

9

135

1.94

0.75

4.22

6.0G

13.50

159

35.3

11.70

282000

353000

14

5.67

1.02

45400

56700

A...........

9

125

4.50

0.57

4.41

3.51

12.33

150.8

33.5

12.23

268000

335000

11.23

4.99

.91

40000

49900

E...........

9

99

4.33

0.58

2.85

4.20

9.90

117

26

11.83

208000

260000

7.14

3.30

.72

26400

33000

CD.........

9

90

4.375

0.41

3.07

2.93

9.07

118.8

26.4

13.10

211000

264000

8.44

3.86

.92

S0900

38600

A,B,D,F.....

9

85

4.50

0.375

2.93

2.64

8.50

111.9

24.9

13.16

199000

249000

7.35

3.27

.86

26000

32700

A,B,C,D,E,F,

9

70

4

0.30

2.40

2.20

7

93.9

20.9

13.41

167000

209000

4.92

2.46

.70

19700

24600

E...........

8

105

4.29

0.79

2.74

5.02

10.50

90.4

22.6

8.64

181000

226000

6.96

3.25

.67

26000

32500

A,B,C,D,F...

8

80

4.50

0.375

2.82

2.39

8.03

83.9

21

10.44

168000

210000

7.55

3.35

.93

26800

38500

A,B,C,D,E,F,

8

G5

4

0.30

2.21

1.95

6.37

67.4

16.9

10.58

135000

169000

4.55

2.27

.71

18200

22700

E...........

7

75

3.91

0.53

2.29

2.92

7.50

54.3

15.5

7.24

124000

155000

4.87

2.50

.66

20000

25000

B...........

7

69

4

0.375

2.47

1.96

6.90

55.7

15.9

8.08

127000

159000

5.42

2.71

.785

21680

27100

CD.........

7

65

3.81

0.44

2.08

2.42

6.58

49.8

14.2

7.56

113800

142000

4.15

2.18

.62

17400

21800

F...........

7

60

3.50

0.40

1.88

2.24

6

45

12.9

7.50

103200

129000

3.15

1.80

.53

14400

18000

A,B.D,E ....

7

55

3.75

0.30

1.90

1.70

5.50

44.3

12.7

8.05

101001

127000

3.90

2.08

.71

16600

20800

G...........

7

52

3.61

0.234

1.92

1.30

5.14

43.1

12.3

8.35

98500

123000

3.43

1.90

.67

15200

19000

A...........

6

120

5.25

0.625

4.78

2.28

11.84

64.9

21.6

5.48

172000

216000

18.59

7.08

1.57

56600

70800

A,F.........

6

90

5

0.50

3.31

2.08

8.70

49.8

16.6

5.72

132001

106000

10.78

4.32

1.24

34500

43200

E..........

6

54

3.46

0.46

1.61

2.18

5.40

28.4

9.5

5.29

76000

950000

2.51

1.45

.46

11600

14500

A,B,C,D,F...

6

50

3.50

0.30

1.77

1.37

4.91

29

9.6

5.90

76800

96000

2.74

1.57

.56

12500

15700

A.B,C,D,E,F,

6

40

3

0.25

1.42

1.17

4.01

23.5

7.8

5.86

62400

78000

1.61

1.07

.40

8500

10700

A,D,E,F.....

5

40

9

0.31

1.36

1.18

3.90

15.4

6.1

3.95

48800

61000

1.68

1.12

.43

9000

11200

B...........

5

36

3

0.30

1.20

1.20

3.60

14.9

5.96

4.14

47700

59600

1.74

1.16

.483

9260

11580

C.............

5

34

2.844

0.31

1.06

1.26

3.38

13.4

5.4

3.96

42800

53500

1.21

.85

.36

6800

8500

A,B,C,D,E,F,

5

30

2.75

0.25

.99

1.01

2.99

12.1

4.8

4.04

38400

48000

1.04

.76

.35

6000

7600

A,F.........

4

37

3

0.S1

1.40

.86

3.66

9.2

4.6

2.51

36800

46000

1.74

1.16

.48

9500

11G00

A,B,D,E,F ..

4

30

2.75

0.25

1.08

.75

2.91

7.5

3.75

2.57

30000

37500

1.11

.81

.38

6500

8100

C...........

4

28

2.75

0.25

1.07

.76

2.90

7.7

3.84

2.65

30700

38400

1.17

.85

.40

6800

8500

D,E.........

4

24

2.25

0.81

.71

.98

2.40

5.6

2.80

2.33

22400

28000

.58

.52

.22

4160

5200

A,B,C,D,F ..

4

18

2

0.19

.58

.61

1.77

4.5

2.25

2.54

18000

22500

.31

.31

.175

2500

8100

E.....

3

27

2.52

0.39

.93

.84

2.70

3.54

2.36

1.32

18900

23600

.84

.67

.31

5360

6700

C......

3

23

2.50

0.25

.86

.53

2.25

3.29

2.16

1.46

17300

21600

.77

.62

.35

4960

6200

E...........

3

21

2.32

0.19

.85

.40

2.10

3.09

2.06

1.46

16500

20600

.55

.47

.30

3760

4700

C...........

3

17

2.25

0.156

.68

.35

1.71

2.66

1.77

1.56

14200

17700

.48

.43

.28

3440

4300

A...........

1 1/4

5 1/4

1.50

0.125

.19

.14

.52

.135

.21

.26

2160

.06

.092

.013

......

920