Pultruded Fiberglass Grating

Pultruded Fiberglass Grating

ECI pultruded fiberglass gratings are manufactured with a high percentage of glass, providing durability and an extremely high unidirectional strength and stiffness, making it the ideal solution for applications that require longer support spans. Combined with the corrosion resistance, long service life, and low maintenance costs, our pultruded fiberglass grating delivers a significant lower cost than that of metal.

Our grating is lightweight, yet strong making it easy to install and providing years of service. With a coarse epoxy non-skid coating, our pultruded fiberglass grating has enhanced traction making it a safe walking surface. Made with continuous glass rovings, our grates resist tension, compression, and bending while providing additional longitudinal strength.

Use our pultruded fiberglass grating in some commercial applications including floor systems, walkways, work platforms, stairs, ramps, trench covers, catwalks, and more. Assembled from components, pultruded fiberglass grating can offer a wide variety of panel sizes and substantially reduce "scrap loss" not always obtainable from molded fiberglass grating.

Please contact us today at (352) 343-3449 or reach out to us on our online contact form to learn more about how our pultruded fiberglass grating fits into your specific project.

Applications

  • Floor systems
  • Walkways
  • Work platforms
  • Stairs
  • Ramps
  • Trench covers
  • Catwalks

Available Resin Systems

pultruded grating is available in two 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.

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

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

Standard Dimensions

Pultruded Grating Standard Dimensions

Available Panel Sizes

3' wide x 20' long 4' wide x 20' long
3' wide x 24' long 4' wide x 24' long

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

pultruded grating
pultruded grating drawing

2" Thick     50% 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 1000 2000
12 0.001 0.002 0.003 0.004 0.005 0.010 0.020 0.040 13302 1.80
18 0.001 0.003 0.004 0.006 0.007 0.015 0.029 0.059 8868 4.15
24 0.002 0.005 0.007 0.009 0.012 0.023 0.047 0.093 6651 6.17
30 0.004 0.008 0.011 0.015 0.019 0.038 0.077 0.153 5321 7.35
36 0.006 0.012 0.018 0.024 0.031 0.061 0.122 0.245 4434 7.95
42 0.009 0.019 0.028 0.037 0.046 0.093 0.186 0.372 3801 8.31
48 0.013 0.027 0.040 0.054 0.067 0.135 0.269 0.539 3326 8.55
54 0.019 0.038 0.057 0.076 0.095 0.190 0.379 2956 8.65
60 0.026 0.051 0.077 0.103 0.129 0.257 0.514 2660 8.75
66 0.034 0.068 0.102 0.136 0.171 0.341 0.682 2419 8.78
72 0.044 0.088 0.133 0.177 0.221 0.442 2217 8.80
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 1000 2000
12 0.001 0.001 0.002 0.002 0.003 0.006 0.012 0.025 23936 1.80
18 0.001 0.003 0.004 0.005 0.007 0.014 0.027 0.055 8624 4.15
24 0.003 0.006 0.009 0.012 0.015 0.029 0.058 0.117 6468 6.17
30 0.006 0.012 0.018 0.024 0.030 0.060 0.120 0.239 4242 7.35
36 0.011 0.023 0.034 0.046 0.057 0.115 0.229 0.458 2946 7.95
42 0.020 0.041 0.061 0.081 0.102 0.203 0.407 2153 8.31
48 0.034 0.067 0.101 0.135 0.168 0.337 0.674 1672 8.55
54 0.053 0.107 0.160 0.213 0.267 0.533 1310 8.65
60 0.080 0.161 0.241 0.321 0.402 1062 8.75
66 0.117 0.234 0.352 0.469 0.586 881 8.78
72 0.166 0.331 0.497 0.663 740 8.80
Properties Per Foot of Width # of Bars Load Bar Depth Bar Centers Weight/sq ft
A = 3.23 in2     I = 1.58 in4     ST = 1.98 in3     SB = 1.32 in3 6 2" 2" 3.43
pultruded grating
pultruded grating drawing

1" Thick     60% 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 1000 2000
12 0.002 0.003 0.005 0.007 0.008 0.016 0.033 0.065 5755 1.10
18 0.004 0.009 0.013 0.018 0.022 0.044 0.088 0.176 3850 1.38
24 0.009 0.019 0.028 0.037 0.047 0.094 0.187 0.374 2888 1.54
30 0.017 0.035 0.052 0.069 0.086 0.173 0.345 0.690 2310 1.63
36 0.029 0.059 0.088 0.117 0.146 0.293 0.586 1925 1.66
42 0.046 0.092 0.138 0.184 0.230 0.459 1650 1.68
48 0.068 0.136 0.203 0.271 0.339 0.678 1444 1.70
54 0.095 0.191 0.286 0.381 0.477 1283 1.72
60 0.129 0.259 0.388 0.517 0.647 1155 1.74
66 0.171 0.342 0.513 0.685 1050 1.75
72 0.221 0.442 0.663 962 1.76
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 1000 2000
12 0.001 0.002 0.003 0.004 0.005 0.010 0.020 0.041 7944 1.10
18 0.004 0.008 0.012 0.017 0.021 0.041 0.083 0.165 5296 1.38
24 0.012 0.023 0.035 0.047 0.058 0.117 0.234 0.468 2935 1.54
30 0.027 0.054 0.081 0.108 0.135 0.270 0.539 1845 1.63
36 0.055 0.110 0.165 0.220 0.274 0.549 1281 1.66
42 0.100 0.201 0.301 0.402 0.502 943 1.68
48 0.169 0.339 0.508 0.678 721 1.70
54 0.268 0.536 571 1.72
60 0.404 514 1.74
Properties Per Foot of Width # of Bars Load Bar Depth Bar Centers Weight/sq ft
A = 2.44 in2     I = 0.31 in4     S = 0.62 in3 8 1" 1.5" 2.47
pultruded grating
pultruded grating drawing

1½" Thick     60% 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 1000 2000
12 0.001 0.002 0.003 0.004 0.005 0.009 0.018 0.036 8958 1.99
18 0.002 0.004 0.006 0.008 0.009 0.019 0.038 0.075 5972 3.23
24 0.004 0.007 0.011 0.015 0.018 0.037 0.074 0.147 4479 3.91
30 0.007 0.013 0.020 0.027 0.033 0.066 0.133 0.265 3853 4.24
36 0.011 0.022 0.033 0.044 0.055 0.110 0.220 0.441 2986 4.41
42 0.017 0.035 0.052 0.069 0.086 0.173 0.345 0.691 2559 4.47
48 0.026 0.051 0.077 0.102 0.128 0.255 0.511 2240 4.51
54 0.036 0.073 0.109 0.145 0.181 0.363 1991 4.52
60 0.050 0.099 0.149 0.198 0.248 0.496 1792 4.54
66 0.066 0.132 0.197 0.263 0.329 0.658 1629 4.55
72 0.085 0.171 0.256 0.341 0.427 1493 4.56
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 1000 2000
12 0.001 0.001 0.002 0.002 0.003 0.006 0.011 0.023 10524 1.99
18 0.002 0.004 0.005 0.007 0.009 0.018 0.035 0.070 7016 3.23
24 0.005 0.009 0.014 0.018 0.023 0.046 0.092 0.184 4585 3.91
30 0.010 0.021 0.031 0.041 0.052 0.104 0.207 0.415 2831 4.24
36 0.021 0.041 0.062 0.083 0.103 0.207 0.413 2006 4.41
42 0.038 0.076 0.113 0.151 0.189 0.378 1454 4.47
48 0.064 0.128 0.192 0.255 0.319 0.639 1117 4.51
54 0.102 0.204 0.306 0.408 0.510 885 4.52
60 0.155 0.310 0.465 0.620 717 4.54
66 0.226 0.453 0.679 592 4.55
72 0.320 0.640 498 4.56
Properties Per Foot of Width # of Bars Load Bar Depth Bar Centers Weight/sq ft
A = 3.11 in2     I = 0.88 in4     S = 1.17 in3 8 1.5" 1.5" 2.97
  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 Brochure