The Purlin Mill

PRE-ENGINEERED METAL BUILDING
COMPONENTS

Secondary Structural Steel Members – C Purlins and Girts

AVALIABLE SIZE

DIMENSION A​

DIMENSION B

DIMENSION C

AVAILABLE GAUGES

FINISH

WEIGHT PER LF

4"

2-1/2"

2-1/2"

16G & 14G

GALVANIZED

16G=2.04 LBS
14G=2.55 LBS

6"

2-1/2"

2-1/2"

16G , 14G & 12G

GALVANIZED

16G=2.45 LBS
14G=3.06 LBS
12G=4.29 LBS

8"

2-1/2"

2-1/2"

16G , 14G & 12G

GALVANIZED

16G=2.45 LBS
14G=3.06 LBS
12G=4.29 LBS

10"

3"

3"

16G , 14G & 12G

GALVANIZED

16G=2.45 LBS
14G=3.06 LBS
12G=4.29 LBS

12"

3"

3"

 14G & 12G

GALVANIZED

14G=4.88 LBS
12G=4.88 LBS

14"

3"

3"

 14G & 12G

GALVANIZED

14G=5.39 LBS
12G=7.55 LBS

TOLERANCE STANDARDS FOR
THICKEST METALS

ACCUMULATION

. . . . . . . . . . . . . . . . . . . . . . . . . .

1/16"

Radii

. . . . . . . . . . . . . . . . . . . . . . . . . .

1/32"

Width

. . . . . . . . . . . . . . . . . . . . . . . . . .

1/16"

Flanges

. . . . . . . . . . . . . . . . . . . . . . . . . .

1/16"

Flare

. . . . . . . . . . . . . . . . . . . . . . . . . .

2X THK PER SIDE ANGLE

Flange

. . . . . . . . . . . . . . . . . . . . . . . . . .

2 DEGREES

Lips

. . . . . . . . . . . . . . . . . . . . . . . . . .

3 DEGREES

Camber

. . . . . . . . . . . . . . . . . . . . . . . . . .

1/8" IN 10'

Ski

. . . . . . . . . . . . . . . . . . . . . . . . . .

1/8" IN 10'

Dive

. . . . . . . . . . . . . . . . . . . . . . . . . .

1/8" IN 10'

Twist

. . . . . . . . . . . . . . . . . . . . . . . . . .

1/8" IN 10'

(Zee Only)

. . . . . . . . . . . . . . . . . . . . . . . . . .

1/4" IN 20'

NET VARIATION FOR COMBNED DIMENSION.

TWIST IS MEASURED WITH THE ZEE LAYING ON A FLAT SURFACE UNDER ITS OWN WEIGHT.

SECTIONAL PROPERTIES

NAME

DEPTH

WIDTH

THK

LIP

RAD

AREA

WT.

LXX

SXX

RXX

LYY

SYY

RYY

J

CW

RO

XO

IN

IN

IN

IN

IN

IN2

IBS/FT

IN4

IN3

IN

IN4

IN3

IN

IN4

IN6

IN

IN

4C16

4

2.5

.06

.81

0.1875

.6

2.04

1.59

.795

1.628

0.543

0.353

0.957

0.00070

2.4

2.94

-2.25

4C14

4

2.5

.075

.84

0.1875

.75

2.55

1.964

.982

1.618

0.685

0.447

0.955

0.00141

3.09

2.94

-2.26

6C16

6

2.5

0.06

0.81

0.1875

0.72

2.45

4.055

1.352

2.373

0.636

0.375

0.94

0.00086

5.28

3.23

-1.98

6C14

6

2.5

0.075

0.84

0.1875

0.9

3.06

5.031

1.677

2.364

0.793

0.471

0.939

0.00169

6.65

3.23

-1.98

6C12

6

2.5

0.105

0.92

0.1875

1.26

4.29

6.936

2.312

2.346

1.104

0.663

0.936

0.00463

4.49

3.22

-2

8C16

8

2.5

0.06

0.87

0.1875

0.847

2.88

8.035

2.009

3.079

0.721

0.403

0.922

0.00102

10.12

3.69

-1.8

8C14

8

2.5

0.075

0.91

0.1875

1.059

3.60

9.99

2.498

3.071

0.9

0.505

0.921

0.00199

12.72

3.68

-1.81

8C12

8

2.5

0.105

0.98

0.1875

1.483

5.05

13.833

3.458

3.054

1.253

0.711

0.919

0.00545

17.99

3.67

-1.82

10C16

10

3

0.06

0.87

0.1875

1.028

3.50

15.158

3.032

3.841

1.193

0.54

1.078

0.00123

24.86

4.48

-2.04

10C14

10

3

0.075

0.91

0.1875

1.284

4.37

18.874

3.775

3.833

1.49

0.678

1.077

0.00241

31.22

4.48

-2.04

10C12

10

3

0.105

0.98

0.1875

1.798

6.12

26.213

5.243

3.818

2.083

0.955

1.076

0.00661

44.1

4.47

-2.06

12C14

12

3

0.075

0.91

0.1875

1.434

4.88

29.15

4.858

4.508

1.569

0.688

1.046

0.00269

46.6

5

-1.88

12C12

12

3

0.105

0.98

0.1875

2.008

6.83

40.554

6.759

4.494

2.193

0.971

1.045

0.00738

65.68

4.99

-1.9

14C14

14

3

.075

0.91

0.1875

1.584

5.39

41.042

5.673

14C12

14 

3

.105

0.98

0.1875

2.218

7.55

58.913

8.416

Thickness indicated represents design thickness. Minimum deliverable bare steel thickness equals 0.095 x design thickness in accordance with section A3.4 of AISI Specifications of minimum steel thickness in inches.