Molded Fiberglass Grating has historically been a hand lay-up composite of resin and continuous glass fiber strand that is thoroughly wet out and woven through an open mold. This method leads to a resinous composite which imparts good strength characteristics and high levels of corrosion resistance. The surface is typically a non-slip surface either resin textured or utilizing either embedded angular grit particles or a glued on sanded surface. The embedded grit surface is both more slip resistant and imparts greater wear resistance than either of the other types.

You will get efficient and thoughtful service from Shengfei.

For these reasons embedded grit is more preferred. Where you are concerned with safety due to liquids and oils on flooring, Molded Fiberglass Grating is the product for you. Our grating is also used in corrosive environments such as paper mills, chemical plants, circuit board shops and many other facilities where chemical corrosion and contact with the flooring cannot be avoided.

Please contact us today at (352) 343- or reach out to us on our online contact form for more information about our molded fiberglass grating solutions.

Available Resin Systems

Molded grating is available in three resin systems, each providing different levels of corrosion protection. All three resin systems meet Class 1 Flame Spread Rating per ASTM E-84 test standards.

GP: A general-purpose orthophthalic polyester resin system that offers good corrosion resistance at an economical price. Standard colors: Yellow and Light Gray.

IFR: A premium-grade isophthalic polyester resin system that provides excellent corrosion protection. Standard colors: Green, Yellow, Dark Gray and Light Gray.

VFR: A vinylester resin system that provides the highest level of corrision protection. Standard colors: Orange and Dark Gray.

Available Top Surfaces

Molded grating is available in square or rectangular mesh patterns with either Meniscus or Grit-Top slip-resistant top surfaces.

Grit-Top: Quartz grit anti-slip surface.

Meniscus: Concave, half-moon cross section with no grit.

Available Grid Dimensions

1" or 1½" thick
¾" x ¾" Square Grid
Bearing bars .25" thick
Open area of 69%

1" or 1½" thick
1½" x 1½" Square Grid
Bearing bars .25" thick
Open area of 69%

2" thick
2" x 2" Square Grid
Bearing bars ." thick
Open area of 71%

1" thick
1" x 4" Rectangular Grid
Bearing bars .25" thick
Open area of 68%

1½" thick
1" x 6" Rectangular Grid
Bearing bars .6" thick
Open area of 38%

Available Panel Sizes

Grid Dimension Available Panel Sizes 1" x ¾" x ¾" (Square) 4' wide x 12' long 1½" x ¾" x ¾" (Square) 4' wide x 12' long 1" x 1½" x 1½" (Square) 3' wide x 10' long, 4' wide x 8' long, 4' wide x 12' long 1½" x 1½" x 1½" (Square) 3' wide x 10' long, 3' wide x 12' long, 4' wide x 12' long 2" x 2" x 2" (Square) 4' wide x 12' long, 5' wide x 12' long 1" x 1" x 4" (Rectangular) 4' long x 12' wide, 3' long x 10' wide 1½" x 1" x 6" (Rectangular) 4' wide x 12' long

To view load data for our molded grating, click on a size below.

1" x 1½" x 1½" Square Grid

1" Thick     69% Open

Span
(inches) CONCENTRATED LOAD in lb/ft of width Max Load
(lb/ft) Apparent EI x 106
(lb-in2) 50 100 150 200 250 500 12 0.006 0.011 0.017 0.023 0.029 0.057 0.114 0.31 18 0.018 0.035 0.053 0.071 0.089 0.177 934 0.34 24 0.040 0.080 0.120 0.160 0.199 0.399 668 0.36 30 0.076 0.152 0.228 0.304 0.380 534 0.37 36 0.128 0.256 0.384 0.512 0.640 360 0.38 Span
(inches) UNIFORM LOAD in lb/ft of width Max Load
(lb/ft) Apparent EI x 106
(lb-in2) 50 100 150 200 250 500 12 0.004 0.007 0.011 0.014 0.018 0.036 0.071 0.143 0.31 18 0.017 0.033 0.050 0.066 0.083 0.166 0.332 0.34 24 0.050 0.100 0.150 0.199 0.249 0.498 668 0.36 30 0.119 0.237 0.356 0.475 0.593 427 0.37 36 0.240 0.480 240 0.38 42 0.431 205 0.39 Properties Per Foot of Width # of Bars Load Bar Width Bar Centers Weight/sq ft A = 1.79 in2     I = 0.15 in4     S = 0.30 in3 8 0.25" 1.5" 2.5

1½" x 1½" x 1½" Square Grid

1½" Thick     68% Open

Want more information on fiberglass floor grating? Feel free to contact us.

Span
(inches) CONCENTRATED LOAD in lb/ft of width Max Load
(lb/ft) Apparent EI x 106
(lb-in2) 50 100 150 200 250 500 12 0.002 0.005 0.007 0.009 0.011 0.023 0.045 0.090 0.80 18 0.005 0.011 0.016 0.022 0.027 0.055 0.109 1.11 24 0.012 0.023 0.035 0.046 0.058 0.115 0.230 1.25 30 0.021 0.043 0.064 0.086 0.107 0.214 816 1.31 36 0.036 0.072 0.108 0.144 0.180 0.360 680 1.35 42 0.056 0.113 0.169 0.224 0.282 0.563 583 1.37 48 0.084 0.167 0.251 0.334 0.418 510 1.38 54 0.119 0.238 0.357 0.476 0.594 453 1.38 Span
(inches) UNIFORM LOAD in lb/ft of width Max Load
(lb/ft) Apparent EI x 106
(lb-in2) 50 100 150 200 250 500 12 0.001 0.003 0.004 0.006 0.007 0.014 0.028 0.057 0.80 18 0.005 0.010 0.015 0.021 0.026 0.051 0.103 1.11 24 0.014 0.029 0.043 0.058 0.072 0.144 0.288 1.25 30 0.033 0.067 0.100 0.134 0.167 0.334 653 1.31 36 0.067 0.135 0.202 0.270 0.337 453 1.35 42 0.123 0.246 0.370 0.493 0.616 333 1.37 48 0.209 0.417 0.626 255 1.38 54 0.334 0.669 201 1.38 Properties Per Foot of Width # of Bars Load Bar Width Bar Centers Weight/sq ft A = 2.73 in2     I = 0.49 in4     S = 0.65 in3 8 0.25" 1.5" 3.94

2" x 2" x 2" Square Grid

2" Thick     71% Open

Span
(inches) CONCENTRATED LOAD in lb/ft of width Max Load
(lb/ft) Apparent EI x 106
(lb-in2) 50 100 150 200 250 500 12 0.001 0.002 0.003 0.004 0.005 0.010 0.020 0.040 1.80 18 0.003 0.006 0.009 0.011 0.014 0.029 0.057 0.114 2.13 24 0.006 0.012 0.018 0.024 0.030 0.060 0.120 0.240 2.40 30 0.011 0.023 0.034 0.045 0.056 0.113 0.225 2.50 36 0.019 0.038 0.057 0.076 0.095 0.191 0.381 2.55 42 0.030 0.059 0.089 0.118 0.148 0.296 0.591 2.61 48 0.043 0.087 0.130 0.174 0.217 0.435 2.65 54 0.061 0.122 0.183 0.244 0.305 0.610 2.69 60 0.083 0.166 0.249 0.332 0.415 926 2.71 Span
(inches) UNIFORM LOAD in lb/ft of width Max Load
(lb/ft) Apparent EI x 106
(lb-in2) 50 100 150 200 250 500 12 <0.001 0.001 0.002 0.003 0.003 0.006 0.013 0.025 1.80 18 0.003 0.005 0.008 0.011 0.013 0.027 0.053 0.107 2.13 24 0.008 0.015 0.023 0.030 0.038 0.075 0.150 0.300 2.40 30 0.018 0.035 0.053 0.070 0.088 0.176 0.352 2.50 36 0.036 0.071 0.107 0.143 0.179 0.357 2.55 42 0.065 0.129 0.194 0.259 0.323 0.647 756 2.61 48 0.109 0.217 0.326 0.435 0.543 579 2.65 54 0.171 0.343 0.514 0.686 457 2.69 60 0.259 0.519 371 2.71 Properties Per Foot of Width # of Bars Load Bar Width Bar Centers Weight/sq ft A = 3.12 in2     I = 1.03 in4     S = 1.03 in3 6 0." 2" 4.51

1" x ¾" x ¾" Square Grid   

1" Thick     44% Open

Span
(inches) CONCENTRATED LOAD in lb/ft of width Max Load
(lb/ft) Apparent EI x 106
(lb-in2) 50 100 150 200 250 500 12 0.003 0.006 0.012 0.031 0.045 0.059 0.089 0.120 0.599 18 0.012 0.024 0.049 0.125 0.188 0.254 0.389 826 0.486 24 0.029 0.057 0.116 0.295 0.456 0.580 620 0.494 30 0.059 0.116 0.233 0.605 496 0.478 36 0.088 0.175 0.360 413 0.549 42 0.171 0.346 354 0.448 48 0.262 0.524 310 0.439 54 0.345 0.685 275 0.447 Span
(inches) UNIFORM LOAD in lb/ft of width Max Load
(lb/ft) Apparent EI x 106
(lb-in2) 50 100 150 200 250 500 12 0.002 0.005 0.007 0.009 0.011 0.023 0.046 0.091 0.599 18 0.011 0.021 0.032 0.043 0.053 0.106 0.213 0.425 0.486 24 0.033 0.066 0.098 0.131 0.164 0.328 825 0.494 30 0.077 0.154 0.230 0.307 0.384 536 0.478 36 0.168 0.336 0.504 310 0.549 42 0.323 0.645 250 0.448 48 0.537 0.439 Properties Per Foot of Width # of Bars Load Bar Width Bar Centers Weight/sq ft A = 2.47 in2     I = 0.16 in4     S = 0.34 in3 8 0.25" 0.75" 4.06

1½" x ¾" x ¾" Square Grid   

1½" Thick     44% Open

Span
(inches) CONCENTRATED LOAD in lb/ft of width Max Load
(lb/ft) Apparent EI x 106
(lb-in2) 50 100 150 200 250 500 12 0.002 0.003 0.005 0.006 0.008 0.016 0.032 0.063 1.14 18 0.004 0.009 0.013 0.017 0.021 0.043 0.085 0.170 1.43 24 0.009 0.018 0.026 0.035 0.044 0.088 0.176 0.352 1.64 30 0.016 0.032 0.048 0.064 0.080 0.160 0.321 0.642 1.75 36 0.027 0.053 0.080 0.106 0.133 0.266 0.532 1.83 42 0.041 0.083 0.124 0.165 0.207 0.413 883 1.87 48 0.060 0.121 0.181 0.242 0.302 0.605 773 1.90 54 0.085 0.170 0.255 0.339 0.424 687 1.93 60 0.116 0.232 0.347 0.463 0.579 618 1.94 Span
(inches) UNIFORM LOAD in lb/ft of width Max Load
(lb/ft) Apparent EI x 106
(lb-in2) 50 100 150 200 250 500 12 <0.001 0.002 0.003 0.004 0.005 0.010 0.020 0.039 1.14 18 0.004 0.008 0.012 0.016 0.020 0.040 0.080 0.159 1.43 24 0.011 0.022 0.033 0.044 0.055 0.110 0.220 1.64 30 0.025 0.050 0.075 0.100 0.125 0.251 0.502 989 1.75 36 0.050 0.100 0.149 0.199 0.249 0.498 687 1.83 42 0.090 0.181 0.271 0.362 0.452 505 1.87 48 0.151 0.302 0.454 0.605 386 1.90 54 0.239 0.477 305 1.93 60 0.362 247 1.94 Properties Per Foot of Width # of Bars Load Bar Width Bar Centers Weight/sq ft A = 3.29 in2     I = 0.74 in4     S = 0.90 in3 8 0.25" 0.75" 4.75

11&#;8" x 1½" x 1½" Square Grid Covered

11&#;8" Thick     Covered

Span
(inches) CONCENTRATED LOAD in lb/ft of width Max Load
(lb/ft) Apparent EI x 106
(lb-in2) 50 100 150 200 250 500 12 0.006 0.011 0.017 0.023 0.029 0.057 0.114 0.31 18 0.018 0.035 0.053 0.071 0.089 0.177 934 0.34 24 0.040 0.080 0.120 0.160 0.199 0.399 668 0.36 30 0.076 0.152 0.228 0.304 0.380 534 0.37 36 0.128 0.256 0.384 0.512 0.640 360 0.38 Span
(inches) UNIFORM LOAD in lb/ft of width Max Load
(lb/ft) Apparent EI x 106
(lb-in2) 50 100 150 200 250 500 12 0.004 0.007 0.011 0.014 0.018 0.036 0.071 0.143 0.31 18 0.017 0.033 0.050 0.066 0.083 0.166 0.332 0.34 24 0.050 0.100 0.150 0.199 0.249 0.498 668 0.36 30 0.119 0.237 0.356 0.475 0.593 427 0.37 36 0.240 0.480 240 0.38 42 0.431 205 0.39 Properties Per Foot of Width # of Bars Load Bar Width Bar Centers Weight/sq ft A = 1.79 in2     I = 0.15 in4     S = 0.30 in3 8 0.25" 1.5" 2.73

15&#;8" x 1½" x 1½" Square Grid Covered

15&#;8" Thick     Covered

Span
(inches) CONCENTRATED LOAD in lb/ft of width Max Load
(lb/ft) Apparent EI x 106
(lb-in2) 50 100 150 200 250 500 12 0.002 0.005 0.007 0.009 0.011 0.023 0.045 0.090 0.80 18 0.005 0.011 0.016 0.022 0.027 0.055 0.109 1.11 24 0.012 0.023 0.035 0.046 0.058 0.115 0.230 1.25 30 0.021 0.043 0.064 0.086 0.107 0.214 816 1.31 36 0.036 0.072 0.108 0.144 0.180 0.360 680 1.35 42 0.056 0.113 0.169 0.225 0.282 0.563 583 1.37 48 0.084 0.167 0.251 0.334 0.418 510 1.38 54 0.119 0.238 0.357 0.476 0.594 453 1.38 Span
(inches) UNIFORM LOAD in lb/ft of width Max Load
(lb/ft) Apparent EI x 106
(lb-in2) 50 100 150 200 250 500 12 0.001 0.003 0.004 0.006 0.007 0.014 0.028 0.057 0.80 18 0.005 0.010 0.015 0.021 0.026 0.051 0.103 1.11 24 0.014 0.029 0.043 0.058 0.072 0.144 0.288 1.25 30 0.033 0.067 0.100 0.134 0.167 0.334 653 1.31 36 0.067 0.135 0.202 0.270 0.337 453 1.35 42 0.123 0.246 0.370 0.493 0.616 333 1.37 48 0.209 0.417 0.626 255 1.38 54 0.334 0.669 201 1.38 Properties Per Foot of Width # of Bars Load Bar Width Bar Centers Weight/sq ft A = 2.73 in2     I = 0.49 in4     S = 0.65 in3 8 0.25" 1.5" 5.17

1. The above tables were developed in accordance with the test method developed by the Fiberglass Grating Manufacturers Council (FGMC) of the American Composites Manufacturers Association (ACMA) for the Fiberglass Grating Standard.
2. The designer should not exceed MAXIMUM RECOMMENDED load at any time. MAXIMUM LOAD represents a 4:1 factor of safety on ULTIMATE CAPACITY. ULTIMATE CAPACITY represents MAX LOAD observed at initial fracture.
3. Walking loads for maintenance traffic are typically a live load of 50 PSF. Deflections for worker comfort are typically limited to 0.375" or SPAN divided by 120 under full live load. For a firmer feel under full live load or a line load 250 lb/ft of width, limit deflections to 0.25" or SPAN divided by 200.
4. The loads represented are for STATIC LOAD CONDITIONS at ambient temperature. Deflections for impact loads or dynamic loads will MULTIPLY the deflections shown by 2. Long term loads will result in added deflection due to creep in the material and will require higher factors of safety to ensure acceptable performance.
5. Deflections are limited to 0.5" as recommended by the Fiberglass Grating Manufacturers Council of the American Composites Manufacturers Association.

High Load Capacity Molded Grating

High Load Capacity (HLC) molded grating is high-strength, corrosion-resistance and low-maintenance, like our traditional molded grating, with the added bonus of being engineered to carry higher loads than traditional grating. Our molded HLC grating is available in 4' x 6' panels with 1½" and 2" thickness and comes in GPFR, IFR and VFR resin systems in standard gray color.

Features

• High strength
• Corrosion resistant
• Low conductivity
• Fire retardant
• Low maintenance

Applications

• Flooring, platforms and ramps
• Storage areas
• Assembly lines
• Long-span walkways
• Trench covers with vehicular traffic

Available Resin Systems

HLC molded grating is available in three resin systems, each providing different levels of corrosion protection. All three resin systems meet Class 1 Flame Spread Rating per ASTM E-84 test standards.

GPFR: A general-purpose orthophthalic polyester resin system that offers good corrosion resistance at an economical price.

IFR: A premium-grade isophthalic polyester resin system that provides excellent corrosion protection.

VFR: A vinylester resin system that provides the highest level of corrision protection.

To view load data for our molded grating, click on a size below.

1½" x 1" x 2" HLC Rectangular Grid

1½" Thick     48% Open

Span
(inches) CONCENTRATED LOAD in lb/ft of width Max Load
(lb/ft) 200 500 18 <0.01 0.02 0.04 0.07 0.11 0.15 0.19 28,047 24 0.02 0.04 0.09 0.17 0.26 0.34 0.44 20,430 36 0.06 0.14 0.28 13,620 42 0.09 0.22 0.44 11,619 Span
(inches) UNIFORM LOAD in lb/ft of width Max Load
(lb/ft) 200 400 500 600 700 800 18 <0.01 0.01 0.02 0.02 0.02 0.03 36,000 24 0.02 0.04 0.05 0.06 0.08 0.09 20,390 36 0.10 0.21 0.26 0.31 0.37 0.42 8,814 42 0.19 0.39 0.48 6,550 Properties Per Foot of Width # of Bars Load Bar Width Bar Centers Weight/sq ft A = 7.2 in2     I = 1.35 in4     S = 1.75 12 T-.43 / B-.35 1" 6.21

2" x 1" x 2" HLC Rectangular Grid

2" Thick     48% Open

Span
(inches) CONCENTRATED LOAD in lb/ft of width Max Load
(lb/ft) 200 500 18 <0.01 0.01 0.03 0.05 0.07 0.10 0.13 32,651 24 0.02 0.03 0.06 0.11 0.17 0.22 0.27 27,245 36 0.04 0.09 0.17 0.34 0.51 18,130 42 0.05 0.13 0.26 15,525 Span
(inches) UNIFORM LOAD in lb/ft of width Max Load
(lb/ft) 200 400 500 600 700 800 18 <0.01 0.01 0.01 0.01 0.01 0.01 43,494 24 0.01 0.02 0.03 0.04 0.04 0.05 27,195 36 0.06 0.12 0.15 0.18 0.21 0.24 8,795 42 0.11 0.22 0.28 0.33 0.39 0.44 8,795 Properties Per Foot of Width # of Bars Load Bar Width Bar Centers Weight/sq ft A = 7.2 in2     I = 1.35 in4     S = 1.75 12 T-.47 / B-.35 1" 8.4

1. The above tables were developed in accordance with the test method developed by the Fiberglass Grating Manufacturers Council (FGMC) of the American Composites Manufacturers Association (ACMA) for the Fiberglass Grating Standard.
2. The designer should not exceed MAXIMUM RECOMMENDED load at any time. MAXIMUM LOAD represents a 4:1 factor of safety on ULTIMATE CAPACITY. ULTIMATE CAPACITY represents MAX LOAD observed at initial fracture.
3. Walking loads for maintenance traffic are typically a live load of 50 PSF. Deflections for worker comfort are typically limited to 0.375" or SPAN divided by 120 under full live load. For a firmer feel under full live load or a line load 250 lb/ft of width, limit deflections to 0.25" or SPAN divided by 200.
4. The loads represented are for STATIC LOAD CONDITIONS at ambient temperature. Deflections for impact loads or dynamic loads will MULTIPLY the deflections shown by 2. Long term loads will result in added deflection due to creep in the material and will require higher factors of safety to ensure acceptable performance.
5. Deflections are limited to 0.5" as recommended by the Fiberglass Grating Manufacturers Council of the American Composites Manufacturers Association.

Documents

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Grating Catalog