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Galvanized Heavy Duty Metal/Stainless Steel Bar Trench Cover Grating

Galvanized Heavy Duty Metal/Stainless Steel Bar Trench Cover Grating

The sturdy heavy duty bar grating is resistance welded to ensure maximum strength, durability and safety. And can withstand repeated heavy loads.
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Description

Our company has automated production equipment and advanced testing equipment, and we continuously improve the quality of Heavy Duty Bar Grating, Serrated Press Locked Steel Grating, Platform And Walkway Grating with a sound quality management system. The company is led by a strong leadership team to form a united fighting group of employees. We are committed to building a comprehensive talent team with passion, management and technology to achieve the common development of the company and individuals. Looking to the future, we will adhere to the mission of integrating global resources and creating a better future together, and devote ourselves to becoming a world-class enterprise. We hope to achieve rapid growth of enterprise and personal career in unremitting efforts and learning.

The heavy duty bar grating is resistance welded to ensure maximum strength, durability, and safety. And it can withstand repeatedly heavy loads. We provide heavy duty carbon steel grating and heavy duty stainless steel grating to meet customer needs. The heavy duty grating is considered to be ideal grids for heavy-duty areas such as highways, parking lots, loading docks, ramps, airports, truck and bus terminals, buses, freight stations, subways and industrial plants.

The Specification is As Follows:

* Standard Widths: 2′, 3′, and 4′ in 20′ lengths.

* Standard bearing bars: 1/4″, 5/16″, and 3/8″ thick.

* Bars range from 1″ to 8″ deep.


Specification of Heavy Duty Bar Grating


Main Features

* High load-bearing capacity

* Good slip resistance

* Easy to install and remove

* Various surface treatments


Applications

* Machinery Protection – Can be used to protect machinery from being damaged by falling objects.

* Ventilation Grilles – Ensure the smooth flow of air.

* Stairs Treads – Provide good slip resistance.

* Fencing – Protect people and property from being damaged by falling objects.

* Handrails – Good load-bearing capacity and can be used as handrails.


Applications of Heavy Duty Grating


Technical Parameters

 15 Space (15/16") Load Table

Bearing Bar Size (inches)

Section Modulus Per Foot of Width

Moment of Inertia Per Foot of Width

Approx.

Weight psf

Maximum Safe Span

H-25

Load

H-20 Load

H-15

Load

Auto Traffic5 Ton Forklift3 Ton Forklift1 Ton Forklift

1x1/4

0.533

0.267

12.0

1'-1"

1'-0"

0'-10"

1'-2"

0'-8"

0'-7"

0'-8"

1x5/16

0.667

0.333

14.7

1'-3"

1'-2"

1'-0"

1'-5"

0'-9"

0'-8"

0'-9"

1x3/8

0.800

0.400

17.4

1'-4"

1'-3"

1'-1"

1'-7"

0'-10"

0'-8"

0'-11"

1-1/4x1/4

0.833

0.521

14.7

1'-4"

1'-3"

1'-1"

1'-8"

0'-10"

0'-9"

0'-11"

1-1/4x5/16

1.042

0.651

18.1

1'-6"

1'-5"

1'-3"

1'-11"

1'-0"

0'-10"

1'-1"

1-1/4x3/8

1.250

0.781

21.5

1'-8"

1'-6"

1'-4"

2'-1"

1'-1"

0'-11"

1'-4"

1-1/2x1/4

1.200

0.900

17.4

1'-8"

1'-6"

1'-4"

2'-3"

1'-1"

0'-11"

1'-3"

1-1/2x5/16

1.500

1.125

21.5

1'-10"

1'-8"

1'-6"

2'-6"

1'-3"

1'-1"

1'-7"

1-1/2x3/8

1.800

1.350

25.6

2'-0"

1'-10"

1'-8"

2'-9"

1'-4"

1'-3"

1'-10"

1-3/4x1/4

1.633

1.429

20.2

1'-11"

1'-9"

1'-7"

2'-10"

1'-3"

1'-2"

1'-8"

1-3/4x5/16

2.042

1.786

24.9

2'-2"

2'-0"

1'-10"

3'-2"

1'-6"

1'-5"

2'-1"

1-3/4x3/8

2.450

2.144

29.7

2'-5"

2'-3"

2'-1"

3'-6"

1'-9"

1'-8"

2'-6"

2x1/4

2.133

2.133

22.9

2'-3"

2'-0"

1'-10"

3'-6"

1'-7"

1'-5"

2'-2"

2x5/16

2.667

2.667

28.3

2'-6"

2'-4"

2'-2"

3'-11"

1'-10"

1'-9"

2'-8"

2x3/8

3.200

3.200

33.8

2'-10"

2'-8"

2'-6"

4'-3"

2'-1"

2'-1"

3'-2"

2-1/4x1/4

2.700

3.038

25.6

2'-7"

2'-4"

2'-2"

4'-2"

1'-10"

1'-9"

2'-8"

2-1/4x5/16

3.375

3.797

31.7

2'-11"

2'-9"

2'-7"

4'-5"

2'-2"

2'-2"

3'-4"

2-1/4x3/8

4.050

4.556

37.8

3'-4"

3'-2"

3'-0"

4'-9"

2'-7"

2'-6"

3'-11"

2-1/2x1/4

3.333

4.167

28.3

2'-11"

2'-9"

2'-7"

4'-7"

2'-2"

2'-2"

3'-4"

2-1/2x5/16

4.167

5.208

35.1

3'-5"

3'-3"

3'-1"

4'-11"

2'-8"

2'-7"

4'-1"

2-1/2x3/8

5.000

6.250

41.9

3'-10"

3'-9"

3'-7"

5'-3"

3'-1"

3'-1"

4'-5"

3x1/4

4.800

7.200

33.8

3'-9"

3'-7"

3'-6"

5'-6"

3'-0"

3'-0"

4'-8"

3x5/16

6.000

9.000

41.9

4'-5"

4'-4"

4'-2"

5'-11"

3'-7"

3'-8"

5'-0"

3x3/8

7.200

10.800

50.1

4'-8"

4'-7"

4'-7"

6'-4"

4'-3"

4'-4"

5'-4"

3-1/2x1/4

6.533

11.433

39.2

4'-9"

4'-7"

4'-6"

6'-5"

3'-11"

3'-11"

5'-5"

3-1/2x5/16

8.167

14.292

48.7

5'-1"

5'-1"

5'-1"

6'-11"

4'-9"

4'-10"

5'-10"

3-1/2x3/8

9.800

17.150

58.2

5'-5"

5'-4"

5'-5"

7'-4"

5'-2"

5'-3"

6'-3"

4x1/4

8.533

17.067

44.6

5'-4"

5'-4"

5'-4"

7'-4"

4'-11"

5'-1"

6'-3"

4x5/16

10.667

21.333

55.5

5'-9"

5'-9"

5'-9"

7'-11"

5'-6"

5'-8"

6'-8"

4x3/8

12.800

25.600

66.4

6'-1"

6'-1"

6'-2"

8'-5"

5'-11"

6'-0"

7'-2"

4-1/2x1/4

10.800

24.300

50.1

6'-0"

6'-0"

6'-0"

8'-3"

5'-9"

5'-11"

7'-0"

4-1/2x5/16

13.500

30.375

62.3

6'-6"

6'-6"

6'-6"

8'-11"

6'-3"

6'-4"

7'-7"

4-1/2x3/8

16.200

36.450

74.6

6'-10"

6'-10"

6'-11"

9'-6"

6'-7"

6'-9"

8'-0"

5x1/4

13.333

33.333

55.5

6'-8"

6'-8"

6'-9"

9'-2"

6'-5"

6'-7"

7'-9"

5x3/8

20.000

50.000

82.7

7'-7"

7'-8"

7'-8"

10'-6"

7'-4"

7'-6"

8'-11"

5x1/2

26.667

66.667

109.9

8'-4"

8'-5"

8'-5"

11'-7"

8'-1"

8'-3"

9'-10"

6x1/4

19.200

57.600

66.4

8'-0"

8'-0"

8'-1"

11'-1"

7'-8"

7'-10"

9'-4"

6x3/8

28.800

86.400

99.0

9'-1"

9'-2"

9'-2"

12'-8"

8'-10"

9'-0"

10'-9"

6x1/2

38.400

115.200

131.7

10'-0"

10'-1"

10'-2"

13'-11"

9'-9"

9'-11"

11'-10"

7x1/4

26.133

91.467

77.3

9'-3"

9'-4"

9'-5"

12'-11"

9'-0"

9'-2"

10'-11"

7x3/8

39.200

137.200

115.4

10'-7"

10'-8"

10'-9"

14'-9"

10'-4"

10'-6"

12'-6"

7x1/2

52.267

182.933

153.4

11'-8"

11'-9"

11'-10"

16'-3"

11'-4"

11'-7"

13'-9"

 

19 Space (1-3/16") Load Table

Bearing Bar Size (inches)

Section Modulus Per Foot of Width

Moment of Inertia Per Foot of Width

Approx.

Weight psf

Maximum Safe Span

H-25

Load

H-20 Load

H-15

Load

Auto Traffic5 Ton Forklift3 Ton Forklift1 Ton Forklift

1x1/4

0.421

0.211

9.7

1'-0"

0'-10"

0'-9"

1'-0"

0'-7"

0'-6"

0'-7"

1x5/16

0.526

0.263

11.9

1'-1"

1'-0"

0'-10"

1'-2"

0'-8"

0'-7"

0'-8"

1x3/8

0.632

0.316

14.0

1'-2"

1'-1"

0'-11"

1'-4"

0'-9"

0'-8"

0'-9"

1-1/4x1/4

0.658

0.411

11.9

1'-3"

1'-1"

1'-0"

1'-5"

0'-9"

0'-8"

0'-10"

1-1/4x5/16

0.822

0.514

14.5

1'-4"

1'-3"

1'-1"

1'-8"

0'-10"

0'-9"

1'-0"

1-1/4x3/8

0.987

0.617

17.2

1'-6"

1'-4"

1'-2"

1'-11"

1'-0"

0'-10"

1'-2"

1-1/2x1/4

0.947

0.711

14.0

1'-6"

1'-4"

1'-2"

1'-11"

0'-11"

0'-10"

1'-1"

1-1/2x5/16

1.184

0.888

17.2

1'-8"

1'-6"

1'-4"

2'-3"

1'-1"

0'-11"

1'-4"

1-1/2x3/8

1.421

1.066

20.4

1'-10"

1'-8"

1'-6"

2'-6"

1'-2"

1'-1"

1'-7"

1-3/4x1/4

1.289

1.128

16.2

1'-9"

1'-7"

1'-5"

2'-5"

1'-2"

1'-0"

1'-5"

1-3/4x5/16

1.612

1.410

19.9

1'-11"

1'-9"

1'-7"

2'-11"

1'-4"

1'-3"

1'-9"

1-3/4x3/8

1.934

1.692

23.7

2'-2"

1'-11"

1'-9"

3'-2"

1'-6"

1'-5"

2'-1"

2x1/4

1.684

1.684

18.3

2'-0"

1'-10"

1'-8"

3'-1"

1'-4"

1'-3"

1'-10"

2x5/16

2.105

2.105

22.6

2'-3"

2'-1"

1'-11"

3'-6"

1'-7"

1'-6"

2'-4"

2x3/8

2.526

2.526

26.9

2'-6"

2'-4"

2'-2"

3'-10"

1'-10"

1'-9"

2'-9"

2-1/4x1/4

2.132

2.398

20.4

2'-3"

2'-1"

1'-11"

3'-9"

1'-7"

1'-6"

2'-4"

2-1/4x5/16

2.664

2.998

25.3

2'-7"

2'-5"

2'-3"

4'-2"

1'-11"

1'-10"

2'-11"

2-1/4x3/8

3.197

3.597

30.1

2'-10"

2'-8"

2'-7"

4'-5"

2'-2"

2'-2"

3'-5"

2-1/2x1/4

2.632

3.289

22.6

2'-6"

2'-4"

2'-3"

4'-4"

1'-10"

1'-10"

2'-10"

2-1/2x5/16

3.289

4.112

28.0

2'-11"

2'-9"

2'-7"

4'-8"

2'-3"

2'-3"

3'-6"

2-1/2x3/8

3.947

4.934

33.3

3'-4"

3'-2"

3'-0"

4'-11"

2'-7"

2'-7"

4'-2"

3x1/4

3.789

5.684

26.9

3'-3"

3'-1"

2'-11"

5'-2"

2'-6"

2'-6"

4'-1"

3x5/16

4.737

7.105

33.3

3'-9"

3'-7"

3'-6"

5'-7"

3'-0"

3'-1"

4'-9"

3x3/8

5.684

8.526

39.8

4'-4"

4'-2"

4'-1"

5'-11"

3'-7"

3'-8"

5'-1"

3-1/2x1/4

5.158

9.026

31.2

4'-0"

3'-10"

3'-9"

6'-0"

3'-3"

3'-4"

5'-2"

3-1/2x5/16

6.447

11.283

38.7

4'-9"

4'-8"

4'-7"

6'-6"

4'-0"

4'-1"

5'-7"

3-1/2x3/8

7.737

13.539

46.2

5'-0"

5'-0"

5'-0"

6'-11"

4'-8"

4'-10"

5'-11"

4x1/4

6.737

13.474

35.5

4'-11"

4'-10"

4'-9"

6'-11"

4'-2"

4'-3"

5'-11"

4x5/16

8.421

16.842

44.1

5'-5"

5'-5"

5'-5"

7'-5"

5'-1"

5'-3"

6'-4"

4x3/8

10.105

20.211

52.7

5'-8"

5'-8"

5'-9"

7'-11"

5'-6"

5'-8"

6'-9"

4-1/2x1/4

8.526

19.184

39.8

5'-7"

5'-7"

5'-8"

7'-9"

5'-1"

5'-4"

6'-8"

4-1/2x5/16

10.658

30.375

49.4

6'-0"

6'-0"

6'-1"

8'-4"

5'-10"

6'-0"

7'-2"

4-1/2x3/8

12.789

28.776

59.1

6'-5"

6'-5"

6'-5"

8'-11"

6'-2"

6'-4"

7'-7"

5x1/4

10.526

26.316

44.1

6'-3"

6'-3"

6'-3"

8'-8"

6'-0"

6'-2"

7'-5"

5x3/8

15.789

39.474

65.5

7'-1"

7'-1"

7'-2"

9'-11"

6'-11"

7'-1"

8'-6"

5x1/2

21.053

52.632

87.0

7'-10"

7'-10"

7'-11"

10'-11"

7'-7"

7'-9"

9'-4"

6x1/4

15.158

45.474

52.7

7'-5"

7'-5"

7'-6"

10'-4"

7'-3"

7'-5"

8'-11"

6x3/8

22.737

68.211

78.4

8'-6"

8'-6"

8'-7"

11'-10"

8'-3"

8'-6"

10'-2"

6x1/2

30.316

90.947

104.2

9'-4"

9'-4"

9'-5"

13'-1"

9'-1"

9'-4"

11'-2"

7x1/4

20.632

72.211

61.2

8'-8"

8'-8"

8'-9"

12'-1"

8'-5"

8'-8"

10'-4"

7x3/8

30.947

108.316

91.3

9'-11"

9'-11"

10'-0"

13'-10"

9'-8"

9'-11"

11'-10"

7x1/2

41.263

144.421

121.4

10'-10"

10'-11"

11'-0"

15'-3"

10'-7"

10'-11"

13'-1"

 

22 Space (1-3/8") Load Table

Bearing Bar Size (inches)

Section Modulus Per Foot of Width

Moment of Inertia Per Foot of Width

Approx.

Weight psf

Maximum Safe Span

H-25

Load

H-20 Load

H-15

Load

Auto Traffic5 Ton Forklift3 Ton Forklift1 Ton Forklift

1x1/4

0.364

0.182

8.5

0'-11"

0'-10"

0'-9"

0'-11"

0'-7"

0'-6"

0'-6"

1x5/16

0.455

0.227

10.4

1'-0"

0'-11"

0'-10"

1'-1"

0'-8"

0'-6"

0'-7"

1x3/8

0.545

0.273

12.2

1'-1"

1'-0"

0'-11"

1'-3"

0'-9"

0'-7"

0'-9"

1-1/4x1/4

0.568

0.355

10.4

1'-2"

1'-0"

0'-11"

1'-4"

0'-9"

0'-7"

0'-9"

1-1/4x5/16

0.710

0.444

12.7

1'-3"

1'-2"

1'-0"

1'-6"

0'-10"

0'-8"

0'-11"

1-1/4x3/8

0.852

0.533

15.0

1'-5"

1'-3"

1'-1"

1'-9"

0'-11"

0'-9"

1'-1"

1-1/2x1/4

0.818

0.614

12.2

1'-5"

1'-3"

1'-1"

1'-9"

0'-11"

0'-9"

1'-0"

1-1/2x5/16

1.023

0.767

15.0

1'-7"

1'-5"

1'-3"

2'-1"

1'-0"

0'-11"

1'-3"

1-1/2x3/8

1.227

0.920

17.8

1'-8"

1'-6"

1'-4"

2'-5"

1'-1"

1'-0"

1'-6"

1-3/4x1/4

1.114

0.974

14.1

1'-8"

1'-6"

1'-3"

2'-3"

1'-1"

0'-11"

1'-4"

1-3/4x5/16

1.392

1.218

17.3

1'-10"

1'-8"

1'-6"

2'-8"

1'-2"

1'-1"

1'-8"

1-3/4x3/8

1.670

1.462

20.6

2'-0"

1'-10"

1'-8"

3'-0"

1'-4"

1'-3"

1'-11"

2x1/4

1.455

1.455

16.0

1'-10"

1'-8"

1'-6"

2'-10"

1'-3"

1'-2"

1'-9"

2x5/16

1.818

1.818

19.7

2'-1"

1'-11"

1'-9"

3'-4"

1'-5"

1'-5"

2'-1"

2x3/8

2.182

2.182

23.4

2'-4"

2'-1"

2'-0"

3'-8"

1'-8"

1'-7"

2'-6"

2-1/4x1/4

1.841

2.071

17.8

2'-1"

1'-11"

1'-9"

3'-5"

1'-6"

1'-5"

2'-2"

2-1/4x5/16

2.301

2.589

22.0

2'-4"

2'-2"

2'-0"

4'-0"

1'-9"

1'-8"

2'-8"

2-1/4x3/8

2.761

3.107

26.2

2'-8"

2'-6"

2'-4"

4'-3"

2'-0"

2'-0"

3'-2"

2-1/2x1/4

2.273

2.841

19.7

2'-4"

2'-2"

2'-0"

4'-2"

1'-8"

1'-8"

2'-7"

2-1/2x5/16

2.841

3.551

24.3

2'-8"

2'-6"

2'-5"

4'-6"

2'-0"

2'-0"

3'-3"

2-1/2x3/8

3.409

4.261

28.9

3'-0"

2'-10"

2'-9"

4'-9"

2'-4"

2'-4"

3'-10"

3x1/4

3.273

4.909

23.4

2'-11"

2'-9"

2'-8"

5'-0"

2'-3"

2'-3"

3'-8"

3x5/16

4.091

6.136

28.9

3'-5"

3'-3"

3'-2"

5'-4"

2'-9"

2'-9"

4'-7"

3x3/8

4.909

7.364

34.5

3'-11"

3'-9"

3'-8"

5'-8"

3'-2"

3'-4"

4'-11"

3-1/2x1/4

4.455

7.795

27.1

3'-8"

3'-6"

3'-5"

5'-10"

2'-11"

3'-0"

5'-0"

3-1/2x5/16

5.568

9.744

33.6

4'-4"

4'-2"

4'-1"

6'-3"

3'-7"

3'-8"

5'-5"

3-1/2x3/8

6.682

11.693

40.1

4'-10"

4'-10"

4'-10"

6'-8"

4'-2"

4'-5"

5'-9"

4x1/4

5.818

11.636

30.8

4'-5"

4'-4"

4'-3"

6'-8"

3'-9"

3'-10"

5'-9"

4x5/16

7.273

14.545

38.2

5'-2"

5'-2"

5'-2"

7'-2"

4'-6"

4'-9"

6'-2"

4x3/8

8.727

17.455

45.6

5'-6"

5'-6"

5'-6"

7'-7"

5'-3"

5'-5"

6'-7"

4-1/2x1/4

7.364

16.568

34.5

5'-4"

5'-3"

5'-3"

7'-6"

4'-7"

4'-10"

6'-5"

4-1/2x5/16

9.205

20.710

42.8

5'-9"

5'-9"

5'-10"

8'-1"

5'-7"

5'-9"

6'-11"

4-1/2x3/8

11.045

24.852

51.2

6'-2"

6'-2"

6'-2"

8'-7"

5'-11"

6'-1"

7'-5"

5x1/4

9.091

22.727

38.2

5'-11"

6'-0"

6'-0"

8'-4"

5'-7"

5'-11"

7'-2"

5x3/8

13.636

34.091

56.8

6'-9"

6'-10"

6'-10"

9'-6"

6'-7"

6'-10"

8'-3"

5x1/2

18.182

45.455

75.3

7'-6"

7'-6"

7'-7"

10'-6"

7'-3"

7'-6"

9'-1"

6x1/4

13.091

39.273

45.6

7'-1"

7'-2"

7'-2"

10'-0"

6'-11"

7'-2"

8'-7"

6x3/8

19.636

58.909

67.9

8'-1"

8'-2"

8'-3"

11'-5"

7'-11"

8'-2"

9'-10"

6x1/2

26.182

78.545

90.1

8'-11"

9'-0"

9'-1"

12'-7"

8'-9"

9'-0"

10'-10"

7x1/4

17.818

62.364

53.1

8'-3"

8'-4"

8'-5"

11'-8"

8'-1"

8'-4"

10'-1"

7x3/8

26.727

93.545

79.0

9'-5"

9'-6"

9'-7"

13'-4"

9'-3"

9'-6"

11'-6"

7x1/2

35.636

124.727

105.0

10'-5"

10'-6"

10'-7"

14'-8"

10'-2"

10'-6"

12'-8"

 

30 Space (1-7/8") Load Table

Bearing Bar Size (inches)

Section Modulus Per Foot of Width

Moment of Inertia Per Foot of Width

Approx.

Weight psf

Maximum Safe Span

H-25

Load

H-20 Load

H-15

Load

Auto Traffic5 Ton Forklift3 Ton Forklift1 Ton Forklift

1x1/4

0.267

0.133

6.6

0'-9"

0'-9"

0'-8"

0'-10"

0'-6"

0'-5"

0'-6"

1x5/16

0.333

0.167

7.9

0'-11"

0'-10"

0'-8"

0'-11"

0'-7"

0'-6"

0'-7"

1x3/8

0.400

0.200

9.3

1'-0"

0'-11"

0'-9"

1'-1"

0'-8"

0'-6"

0'-8"

1-1/4x1/4

0.417

0.260

7.9

1'-0"

0'-11"

0'-10"

1'-1"

0'-8"

0'-6"

0'-8"

1-1/4x5/16

0.521

0.326

9.6

1'-1"

1'-0"

0'-11"

1'-3"

0'-9"

0'-7"

0'-9"

1-1/4x3/8

0.625

0.391

11.3

1'-3"

1'-1"

1'-0"

1'-6"

0'-10"

0'-8"

0'-11"

1-1/2x1/4

0.600

0.450

9.3

1'-2"

1'-1"

1'-0"

1'-5"

0'-9"

0'-8"

0'-11"

1-1/2x5/16

0.750

0.563

11.3

1'-4"

1'-3"

1'-1"

1'-9"

0'-10"

0'-9"

1'-1"

1-1/2x3/8

0.900

0.675

13.4

1'-6"

1'-4"

1'-2"

2'-0"

1'-0"

0'-10"

1'-3"

1-3/4x1/4

0.817

0.715

10.6

1'-5"

1'-3"

1'-2"

1'-10"

0'-11"

0'-10"

1'-2"

1-3/4x5/16

1.021

0.893

13.0

1'-7"

1'-5"

1'-3"

2'-2"

1'-0"

0'-11"

1'-5"

1-3/4x3/8

1.225

1.072

15.4

1'-9"

1'-7"

1'-5"

2'-7"

1'-2"

1'-1"

1'-8"

2x1/4

1.067

1.067

12.0

1'-7"

1'-6"

1'-4"

2'-3"

1'-1"

1'-0"

1'-6"

2x5/16

1.333

1.333

14.7

1'-10"

1'-8"

1'-6"

2'-9"

1'-3"

1'-2"

1'-10"

2x3/8

1.600

1.600

17.4

2'-0"

1'-10"

1'-8"

3'-3"

1'-5"

1'-4"

2'-2"

2-1/4x1/4

1.350

1.519

13.4

1'-10"

1'-8"

1'-6"

2'-10"

1'-3"

1'-2"

1'-10"

2-1/4x5/16

1.688

1.898

16.4

2'-0"

1'-10"

1'-9"

3'-5"

1'-5"

1'-5"

2'-3"

2-1/4x3/8

2.025

2.278

19.5

2'-3"

2'-1"

1'-11"

3'-11"

1'-8"

1'-8"

2'-8"

2-1/2x1/4

1.667

2.083

14.7

2'-0"

1'-10"

1'-8"

3'-5"

1'-5"

1'-5"

2'-3"

2-1/2x5/16

2.083

2.604

18.1

2'-3"

2'-1"

2'-0"

4'-2"

1'-8"

1'-8"

2'-9"

2-1/2x3/8

2.500

3.125

21.5

2'-6"

2'-5"

2'-3"

4'-5"

1'-11"

2'-0"

3'-3"

3x1/4

2.400

3.600

17.4

2'-6"

2'-4"

2'-2"

4'-7"

1'-11"

1'-11"

3'-2"

3x5/16

3.000

4.500

21.5

2'-10"

2'-8"

2'-7"

5'-0"

2'-3"

2'-4"

3'-11"

3x3/8

3.600

5.400

25.6

3'-3"

3'-1"

3'-0"

5'-3"

2'-7"

2'-9"

4'-8"

3-1/2x1/4

3.267

5.717

20.2

3'-0"

2'-10"

2'-9"

5'-5"

2'-5"

2'-6"

4'-3"

3-1/2x5/16

4.083

7.146

24.9

3'-6"

3'-5"

3'-4"

5'-10"

2'-11"

3'-1"

5'-1"

3-1/2x3/8

4.900

8.575

29.7

4'-0"

3'-11"

3'-10"

6'-2"

3'-5"

3'-7"

5'-5"

4x1/4

4.267

8.533

22.9

3'-7"

3'-6"

3'-7"

6'-2"

3'-0"

3'-2"

5'-5"

4x5/16

5.333

10.667

28.3

4'-1"

4'-2"

4'-2"

6'-8"

3'-8"

3'-11"

5'-10"

4x3/8

6.400

12.800

33.8

4'-11"

4'-10"

4'-10"

7'-1"

4'-4"

4'-8"

6'-2"

4-1/2x1/4

5.400

12.150

25.6

4'-4"

4'-3"

4'-2"

6'-11"

3'-8"

3'-11"

6'-1"

4-1/2x5/16

6.750

15.188

31.7

5'-2"

5'-1"

5'-1"

7'-6"

4'-6"

4'-10"

6'-7"

4-1/2x3/8

8.100

18.225

37.8

5'-7"

5'-7"

5'-8"

7'-11"

5'-4"

5'-8"

7'-0"

5x1/4

6.667

16.667

28.3

5'-1"

5'-0"

5'-0"

7'-8"

4'-6"

4'-10"

6'-9"

5x3/8

10.000

25.000

41.9

6'-3"

6'-3"

6'-4"

8'-10"

6'-1"

6'-4"

7'-9"

5x1/2

13.333

33.333

55.5

6'-10"

6'-10"

6'-11"

9'-8"

6'-9"

7'-0"

8'-7"

6x1/4

9.600

28.800

33.8

6'-6"

6'-6"

6'-7"

9'-3"

6'-3"

6'-8"

8'-2"

6x3/8

14.400

43.200

50.1

7'-5"

7'-6"

7'-7"

10'-7"

7'-4"

7'-7"

9'-4"

6x1/2

19.200

57.600

66.4

8'-2"

8'-3"

8'-4"

11'-8"

8'-1"

8'-5"

10'-3"

7x1/4

13.067

45.733

39.2

7'-7"

7'-7"

7'-9"

10'-9"

7'-6"

7'-9"

9'-6"

7x3/8

19.600

68.600

58.2

8'-8"

8'-8"

8'-10"

12'-4"

8'-7"

8'-11"

10'-11"

7x1/2

26.133

91.467

77.3

9'-6"

9'-7"

9'-9"

13'-7"

9'-5"

9'-9"

12'-0"

 

38 Space (2-3/8") Load Table

Bearing Bar Size (inches)

Section Modulus Per Foot of Width

Moment of Inertia Per Foot of Width

Approx.

Weight psf

Maximum Safe Span

H-25

Load

H-20 Load

H-15

Load

Auto Traffic5 Ton Forklift3 Ton Forklift1 Ton Forklift

1x1/4

0.211

0.105

5.4

0'-8"

0'-8"

0'-7"

0'-9"

0'-6"

0'-5"

0'-5"

1x5/16

0.263

0.132

6.5

0'-10"

0'-9"

0'-8"

0'-10"

0'-6"

0'-5"

0'-6"

1x3/8

0.316

0.158

7.6

0'-10"

0'-10"

0'-8"

0'-11"

0'-7"

0'-6"

0'-7"

1-1/4x1/4

0.329

0.206

6.5

0'-11"

0'-10"

0'-9"

1'-0"

0'-8"

0'-6"

0'-7"

1-1/4x5/16

0.411

0.257

7.8

1'-0"

0'-11"

0'-10"

1'-2"

0'-8"

0'-7"

0'-9"

1-1/4x3/8

0.493

0.308

9.2

1'-1"

1'-0"

0'-11"

1'-4"

0'-9"

0'-7"

0'-10"

1-1/2x1/4

0.474

0.355

7.6

1'-1"

1'-0"

0'-10"

1'-3"

0'-9"

0'-7"

0'-10"

1-1/2x5/16

0.592

0.444

9.2

1'-3"

1'-1"

1'-0"

1'-6"

0'-10"

0'-8"

1'-0"

1-1/2x3/8

0.711

0.533

10.8

1'-4"

1'-3"

1'-1"

1'-9"

0'-11"

0'-9"

1'-2"

1-3/4x1/4

0.645

0.564

8.6

1'-4"

1'-2"

1'-0"

1'-7"

0'-10"

0'-9"

1'-0"

1-3/4x5/16

0.806

0.705

10.5

1'-5"

1'-3"

1'-2"

1'-11"

0'-11"

0'-10"

1'-3"

1-3/4x3/8

0.967

0.846

12.4

1'-7"

1'-5"

1'-3"

2'-3"

1'-1"

1'-0"

1'-6"

2x1/4

0.842

0.842

9.7

1'-5"

1'-4"

1'-2"

2'-0"

1'-0"

0'-11"

1'-4"

2x5/16

1.053

1.053

11.9

1'-8"

1'-6"

1'-4"

2'-5"

1'-1"

1'-0"

1'-7"

2x3/8

1.263

1.263

14.0

1'-9"

1'-8"

1'-6"

2'-10"

1'-3"

1'-2"

1'-11"

2-1/4x1/4

1.066

1.199

10.8

1'-8"

1'-6"

1'-4"

2'-5"

1'-1"

1'-1"

1'-8"

2-1/4x5/16

1.332

1.499

13.2

1'-10"

1'-8"

1'-6"

3'-0"

1'-3"

1'-3"

2'-0"

2-1/4x3/8

1.599

1.799

15.6

2'-0"

1'-10"

1'-8"

3'-6"

1'-5"

1'-5"

2'-5"

2-1/2x1/4

1.316

1.645

11.9

1'-10"

1'-8"

1'-6"

2'-11"

1'-3"

1'-3"

2'-0"

2-1/2x5/16

1.645

2.056

14.5

2'-1"

1'-11"

1'-9"

3'-7"

1'-6"

1'-6"

2'-6"

2-1/2x3/8

1.974

2.467

17.2

2'-3"

2'-1"

2'-0"

4'-2"

1'-8"

1'-9"

2'-11"

3x1/4

1.895

2.842

14.0

2'-2"

2'-1"

1'-11"

4'-1"

1'-8"

1'-8"

2'-10"

3x5/16

2.368

3.553

17.2

2'-6"

2'-4"

2'-3"

4'-9"

1'-11"

2'-0"

3'-6"

3x3/8

2.842

4.263

20.4

2'-10"

2'-8"

2'-7"

5'-0"

2'-3"

2'-5"

4'-2"

3-1/2x1/4

2.579

4.513

16.2

2'-8"

2'-6"

2'-5"

5'-1"

2'-1"

2'-2"

3'-9"

3-1/2x5/16

3.224

5.641

19.9

3'-1"

2'-11"

2'-10"

5'-6"

2'-6"

2'-8"

4'-8"

3-1/2x3/8

3.868

6.770

23.7

3'-6"

3'-4"

3'-4"

5'-10"

2'-11"

3'-2"

5'-3"

4x1/4

3.368

6.737

18.3

3'-2"

3'-0"

2'-11"

5'-10"

2'-7"

2'-9"

4'-11"

4x5/16

4.211

8.421

22.6

3'-8"

3'-7"

3'-7"

6'-3"

3'-2"

3'-5"

5'-7"

4x3/8

5.053

10.105

26.9

4'-3"

4'-2"

4'-2"

6'-8"

3'-8"

4'-0"

6'-0"

4-1/2x1/4

4.263

9.592

20.4

3'-9"

3'-7"

3'-7"

6'-7"

3'-2"

3'-5"

5'-10"

4-1/2x5/16

5.329

11.990

25.3

4'-5"

4'-4"

4'-4"

7'-1"

3'-11"

4'-3"

6'-4"

4-1/2x3/8

6.395

14.388

30.1

5'-1"

5'-0"

5'-1"

7'-6"

4'-7"

5'-0"

6'-9"

5x1/4

5.263

13.158

22.6

4'-4"

4'-3"

4'-3"

7'-4"

3'-10"

4'-2"

6'-6"

5x3/8

7.895

19.737

33.3

5'-10"

5'-10"

5'-11"

8'-4"

5'-6"

6'-0"

7'-6"

5x1/2

10.526

26.316

44.1

6'-5"

6'-5"

6'-6"

9'-2"

6'-4"

6'-8"

8'-3"

6x1/4

7.579

22.737

26.9

5'-10"

5'-10"

5'-11"

8'-9"

5'-4"

5'-11"

7'-10"

6x3/8

11.368

34.105

39.8

6'-11"

7'-0"

7'-1"

10'-0"

6'-11"

7'-3"

9'-0"

6x1/2

15.158

45.474

52.7

7'-8"

7'-8"

7'-10"

11'-1"

7'-7"

8'-0"

9'-11"

7x1/4

10.316

36.105

31.2

7'-1"

7'-2"

7'-3"

10'-3"

7'-1"

7'-5"

9'-2"

7x3/8

15.474

54.158

46.2

8'-1"

8'-2"

8'-4"

11'-8"

8'-1"

8'-5"

10'-6"

7x1/2

20.632

72.211

61.2

8'-11"

9'-0"

9'-2"

12'-11"

8'-11"

9'-4"

11'-6"


We always regard quality management as the first pursuit goal, carry forward the spirit of hard work, and strive for the first-class spirit in Galvanized Heavy Duty Metal/Stainless Steel Bar Trench Cover Grating industry. We hope that employees can fully display their talents and personal values in the enterprise, and finally realize the common growth of employees and the enterprise. We always follow the tenet of customer satisfaction first, continuously improve the quality of customer service, and provide consumers with satisfactory and professional services.

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