TABLE 21

CHARACTERISTICS OF STEEL AND IRON WIRE – SOLID – BARE

WIND AND ICE LOADS

BIRMINGHAM WIRE GAUGE

Gauge

Diameter Inches

Area of conductor Square Inch

Galvanized

Loading Per Linear Foot of Conductor, Pounds

Steel

Iron

Light Loading District

Heavy Loading District

Ultimate tension in pounds

Ultimate tension in pounds

B.B.

Ultimate tension in pounds

E.B.B.

Vertical – Conductor only

Horizontal -Wind, 8 lbs per square foot

Resultant Load

Vertical, Conductor +½ inch Ice

Horizontal -Wind 6 Lbs per Sq. Ft. on Conductor + ½ inch Ice

Resultant Load

0

0.340

0.0908

4,965

4,635

4,138

0.314

0.226

0.387

0.835

0.670

1.070

1

.300

.0707

3,870

3,610

3,225

.244

.199

.315

.740

.650

0.985

2

.284

.0633

3,465

3,235

2,890

.218

.185

.286

.654

.642

.914

4

.238

.0445

2,435

2,270

2,030

.149

.158

.217

.606

.619

.866

6

.203

.0324

1,770

1,650

1,475

.107

.135

.172

.543

.601

.810

8

.165

.0214

1,170

1,090

975

.072

.110

.131

.484

.582

.756

9

.134

.0141

775

720

645

.049

.089

.101

.442

.567

.719

10

.109

.0093

510

475

425

.032

.073

.079

.410

.554

.689

12

.083

.0054

295

275

247

.018

.055

.058

.389

.541

.661