Continuous research and development of new Bar Grating Stair Treads, Serrated Steel Grating, Mild Steel Grating, improve product quality, provide perfect after-sales service is the company's business philosophy. The company is customer-centric, pursuing perfection with a high degree of professionalism and professional service standards. We focus on equality and respect, creativity and intuition, initiative and entrepreneurship, foresight and value control. We pay great attention to the construction of system and the cultivation of talents, and have developed a set of management system.
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.

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.

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 Traffic | 5 Ton Forklift | 3 Ton Forklift | 1 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 Traffic | 5 Ton Forklift | 3 Ton Forklift | 1 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 Traffic | 5 Ton Forklift | 3 Ton Forklift | 1 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 Traffic | 5 Ton Forklift | 3 Ton Forklift | 1 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 Traffic | 5 Ton Forklift | 3 Ton Forklift | 1 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 believe that quality is the life of the enterprise, therefore, we have always been committed to producing high quality and efficient Yantai City Heavy Duty Hot DIP Galvanized 10X2 Plug-in 32X5 Bar Flat Grating Used on Cover. We pursue a corporate culture centered on efficiency and provide outstanding employees with lifetime employment opportunities. We are adhering to a differentiated development and production model, providing brand-new products and technical solutions, emphasizing application services, and solving industry problems together with customers to achieve the improvement of customer product quality.
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