SAFE-T-SPAN LOAD/DEFLECTION INFORMATION Fibergrate Composite Structures Inc. has revised its load/deflection tables to be even more user friendly by separating the uniform load information from the concentrated load information and by listing all its pultruded Safe-T-Span gratings in the column directly to the right of the span dimensions. These changes allow designers to quickly and accurately denote the grating best suited for the intended purpose. Ultimate Capacity Fibergrate has tested its molded and pultruded grating product lines to their ultimate capacities. ULTIMATE CAPACITY represents a complete and total failure of the grating and is presented to illustrate the reserve strength of the grating at a given span. Ultimate capacities are not to be used for design: functionality of the grating is limited to Maximum Recommended Load. The designer should not exceed the MAX RECOMMENDED LOAD at any given span. MAX RECOMMENDED LOAD represents a 2:1 factor of safety on ULTIMATE CAPACITY. ULTIMATE CAPACITY values are provided to illustrate the reserve strength of the grating at a given span and are NOT to be used for design. Functionality of grating is limited to MAX RECOMMENDED LOAD. Loads Walking loads, typically 50-65 PSF maximum, are recommended for pedestrian traffic. Deflections for personnel comfort are typically limited to the lesser of 3/8" or CLEAR SPAN divided by 5. For a firmer feel, limit deflection to the lesser of 1/4" or CLEAR SPAN divided by 200. The allowable loads in this table are for STATIC LOAD CONDITIONS at ambient temperatures only. Allowable loads for impact or dynamic conditions should be a minimum of ONE-HALF the values shown. Long-term loads will result in added deflection due to creep in the material and will also require higher safety factors to ensure acceptable performance. For applications at elevated temperatures, consult Fibergrate. The designer is further referenced to ASCE Structural Plastics Design Manual. Manufacturing Control Limits The Load/Deflection values given in this brochure are median values developed through Fibergrate s Quality Assurance Program. The manufacturing control limits on stiffness for all panels are plus or minus 7.5% of these median values. This represents the tightest control on performance variation in the industry, based on published data.
Pultruded Industrial Grating Safe-T-Span Uniform Load Table Deflections in Inches Load = lbs. / ft. 2 I10 3569 7139 I15 7617 15233 53 150 10708 I4015 115 22850 T3320 10080 201 I10 0.16 2257 4515 I15 4914 9828 18 5040 3386 10080 67 I4015 7371 147 T3320 60 13440 I10 0. 0.24 1693 3386 I15 3194 6388 24 0.16 0.31 2970 20 5940 5079 I4015 4791 9582 T3320 39 7920 I10 0.16 0.27 0.55 1373 2746 I15 0.10 0.20 0.41 29 5897 0.73 2592 2059 5184 4119 I4015 0.27 43 8845 T3320 0.19 3456 69 I10 0.10 0.31 0.52 1.03 1175 2349 I15 0.19 0.75 2457 4914 0. 0.35 0.69 21 1762 4320 3524 I4015 0.50 86 7371 T3320 0.35 2880 57 I10 0.19 0.37 0.56 0.93 951 1902 I15 0.35 0.70 1837 73 0. 0.37 0.62 0.45 1.24 1851 17 3703 2853 I4015 0.94 2755 5510 T3320 0.10 0.34 0.68 2468 4937 I10 0.29 0.57 0.86 1.43 719 1438 I15 0.34 0.57 1.14 1406 2813 0.10 0.19 0.57 0.95 0.73 1.91 1620 1079 3240 2157 I4015 0.76 1.52 2109 19 T3320 0.16 0.27 0.55 1.09 21 4320 I10 0.51 1.02 1.52 2. 568 11 I15 0.10 0.19 0.39 0.58 0.97 1111 2222 0. 0.34 0.24 0.68 1.02 0.59 1.69 1.19 84 852 2568 1703 I4015 0.26 0.39 0.65 1.29 17 3333 T3320 0.27 0.45 0.89 1679 3358 I10 0. 0.84 1.68 2.52 4 920 I15 0.31 0.62 0.93 1. 900 1800 0.56 1. 0. 1.68 0.91 2.80 1.82 1040 690 2080 1380 I4015 0.10 0.41 0.62 1.03 2.06 1350 2700 T3320 0.27 0.41 0.68 1.37 10 20 I10 0.69 1.38 2.77 4.15 380 761 I15 0.49 0.99 1. 2.47 744 18 0.46 0.27 0.92 0. 1.85 0.81 2.77 1.34 4.62 8 570 10 1141 I4015 0.16 0.33 0. 0.99 1.64 3.29 1116 2231 T3320 0.10 0.20 0.40 0. 1.00 2.00 14 22 I10 0.96 1.93 3.86 5.79 320 639 I15 0.34 0.68 1. 2.03 3.39 625 50 0.64 0.35 1.29 0.70 2.57 1.05 3.86 1.76 2 479 1445 959 I4015 0.45 0.90 1. 2.26 938 1875 T3320 0.26 0.53 0.79 1.32 945 1889 NOTES: 1. The designer should not exceed the MAX RECOMMENDED LOAD at any given span. MAX RECOMMENDED LOAD represents a 2:1 factor of safety on ULTIMATE CAPACITY. 2. ULTIMATE CAPACITY represents a complete and total failure of the grating. Values are provided to illustrate the reserve strength of the grating at a given span and are NOT to be used for design. Functionality of grating is limited to MAX RECOMMENDED LOAD. 3. Walking loads, typically 50-65 PSF maximum are recommended for pedestrian traffic. Deflections for worker comfort are typically limited to the lesser of 3/8" or CLEAR SPAN divided by 5; for a firmer feel, limit deflection to the lesser of 1/4" or CLEAR SPAN divided by 200. 4. The allowable loads in this table are for STATIC LOAD CONDITIONS at ambient temperatures only. Allowable loads for impact or dynamic conditions should be a maximum of ONE-HALF the values shown. Long term loads will result in added deflection due to creep in the material and will also require higher safety factors to ensure acceptable performance. For applications at elevated U Uniform load lbs/ft2 DU Uniform load deflection (in.)
Pultruded Industrial Grating Safe-T-Span Concentrated Line Load Table Deflections in Inches I10.01.03.06 3569 7139 I15 7617 15233 53 150 10708 I4015 115 22850 T3320 10080 201 I10 3386 67 I15 7371 147 18 0. 5080 150 10159 I4015 11057 22113 T3320 10080 201 I10 0.19 2837 5674 I15 75 9750 24 5940 55 11880 8510 I4015 0.10 7313 14625 T3320 7920 15840 I10 0.10 0.35 0.70 20 40 I15 0.26 4500 9000 0. 0.16 5200 3450 10400 6900 I4015 0.22 6750 13500 T3320 0. 6933 138 Load = lbs. / ft. OF WIDTH C Concentrated line load lbs/ft of width DC Concentrated line load deflection (in.) I10 0.55 1968 3935 I15 0.10 0.20 0.40 3750 7500 0. 4320 8640 0.37 0.74 2952 5903 I4015 0.26 5625 150 T3320 0.19 57 11520 I10 0. 0.85 15 33 I15 0.10 0.16 0.32 0.64 3215 69 0.10 0.57 0.41 1.13 3714 2497 79 4994 I4015 0. 22 9643 T3320 0.16 0.31 4953 9905 I10 0.34 0.57 1.15 1438 2875 I15 0.46 0.91 2813 5625 0.29 0.76 0.58 1.53 3250 2156 6500 43 I4015 0. 0. 19 8438 T3320 0.22 0.44 4333 86 I10 0. 0.90 1.81 78 2555 I15 0.35 0.69 1.38 2500 5000 0. 0.24 0. 0. 1.20 0.84 2889 1917 5778 3833 I4015 0.46 0.92 3750 7500 T3320 0.10 0.16 0.32 0.63 3778 7555 I10 0.27 0. 0.81 1.34 2.69 1150 20 I15 0.10 0.20 0. 0.49 0.99 1.98 2250 4500 0. 0. 0.29 0.90 0.58 1.79 1.17 20 15 5200 3450 I4015 0.20 0.33 0. 1.32 3375 6750 T3320 0.22 0.44 0.88 3400 6800 I10 0.20 0.39 0.78 1.18 1.96 1046 2091 I15 0. 0.70 1.40 2.80 2046 4091 0.26 0.52 0.78 1.31 0.76 2.61 1.52 23 1569 47 3137 I4015 0.19 0.93 1.86 68 61 T3320 0. 0.29 0.57 1.14 91 6182 I10 0.26 0.51 1.03 1. 2.57 959 1917 I15 0. 0.90 1.81 1875 3750 0.34 0.19 0.69 1.03 1. 0.94 3.44 1.88 2167 1438 4333 2876 I4015 0. 0.24 0. 1.20 2.40 2813 5625 T3320 0.35 0.70 1.41 2833 56 NOTES: 1. The designer should not exceed the MAX RECOMMENDED LOAD at any given span. MAX RECOMMENDED LOAD represents a 2:1 factor of safety on ULTIMATE CAPACITY. 2. ULTIMATE CAPACITY represents a complete and total failure of the grating. Values are provided to illustrate the reserve strength of the grating at a given span and are NOT to be used for design. Functionality of grating is limited to MAX RECOMMENDED LOAD. 3. Walking loads, typically 50-65 PSF maximum are recommended for pedestrian traffic. Deflections for worker comfort are typically limited to the lesser of 3/8" or CLEAR SPAN divided by 5; for a firmer feel, limit deflection to the lesser of 1/4" or CLEAR SPAN divided by 200. 4. The allowable loads in this table are for STATIC LOAD CONDITIONS at ambient temperatures only. Allowable loads for impact or dynamic conditions should be a maximum of ONE-HALF the values shown. Long term loads will result in added deflection due to creep in the material and will also require higher safety factors to ensure acceptable performance. For applications at elevated temperatures, consult factory. The designer is further referenced to ASCE Structural Plastics Design Manual. 13
Pultruded Pedestrian Grating 2 U Uniform load lbs/ft DU Uniform load deflection (in.) Safe-T-Span Uniform Load Table Deflections in Inches Load = lbs. / ft. 2 T3810 27 T2510 3276 6552 T10 4586 9173 T3815 19 8438 T2515 5063 105 T15 5906 11813 T3810 0. 1820 40 T2510 0.10 0.20 2184 T10 58 6115 18 T3815 0.10 2813 5625 T2515 3375 6750 T15 3938 7875 T3810 0.10 0.34 15 27 T2510 1638 3276 T10 0. 0.24 0. 2293 4586 24 T3815 0. 0.24 2109 19 T2515 0.10 0.20 2531 5063 T15 2953 5906 T3810 0.16 0.24 0.40 0.80 1092 2184 T2510 0.20 0.33 0.67 1311 2621 T10 0.29 0.57 1835 69 T3815 1688 3375 T2515 0. 2025 4050 T15 0.10 0.20 0.40 23 45 T3810 0.16 0.32 0.49 0.81 862 14 T2510 0.27 0.41 0.68 1.35 1035 2069 T10 0.35 0.58 1.16 14 2897 T3815 0.56 1406 2813 T2515 0.46 1688 3375 T15 0. 0.20 0.40 1969 3938 T3810 0. 0. 0.89 1.49 634 67 T2510 0. 0.50 0.74 1.24 7 1520 T10 0.43 0.64 1.06 1064 28 T3815 0.10 0.20 0. 0.50 1.00 1100 2200 T2515 0.41 0.83 1320 2640 T15 0.71 10 80 T3810 0.50 1.00 1.50 5 970 T2510 0. 0.84 1.25 2.09 582 1164 T10 0.71 1.07 1.79 815 16 T3815 0.33 0.50 0.84 8 1684 T2515 0. 0.70 1.39 1011 2021 T15 0. 0.24 0. 1.19 1179 2358 T3815 0.26 0.53 0.79 1.32 5 1331 T2515 0.22 0.44 0. 1.10 799 1597 T15 0.19 0.56 0.94 932 1863 T3815 0.20 0.40 0.79 1.19 1.98 539 1078 T2515 0.16 0.33 0. 0.99 1.65 647 94 T15 0.56 0.85 1.41 755 1509 T3815 0.29 0.58 1.15 1.73 445 891 T2515 0.24 0. 0.96 1.44 2.40 535 1069 T15 0.41 0.82 1.24 2.06 624 47 T3815 0.41 0.82 1.63 2.45 374 749 T2515 0.34 0.68 1. 2.04 449 898 T15 0.29 0.58 1.16 1.75 2.91 524 10 IMPORTANT: Installation should provide for fully supported abutments of grating panels. Otherwise, higher deflection values may be experienced, and tripping hazards may occur. Stub bars should not be less than 1" in clip attachment areas. Safe-T-Span pedestrian grating load bars at platform edges should be fully supported. 14
Pultruded Pedestrian Grating C Concentrated line load lbs/ft of width DC Concentrated line load deflection (in.) Safe-T-Span Concentrated Line Load Table Deflections in Inches T3810 27 T2510 3276 6552 T10 4586 9173 T3815 15 84 T2515 5058 10116 T15 5901 11802 T3810 0.26 2587 5173 T2510 0.22 3104 6208 T10 0.19 4346 8691 18 T3815 0.10 15 84 T2515 5058 10116 T15 5901 11802 T3810 0.27 1940 3880 T2510 0.22 0.45 2328 4656 T10 0.19 3259 6518 24 T3815 0.19 39 6738 T2515 0.16 4043 8085 T15 4716 9433 T3810 0.10 0.26 0.51 1552 3104 T2510 0.43 1863 35 T10 0.19 0. 28 5215 T3815 2695 5390 T2515 0. 3234 6468 T15 3773 76 T3810 0.26 0.43 0.86 94 2587 T2510 0.22 0. 1552 3104 T10 0. 0.19 0.31 0.61 2173 4346 T3815 0. 0.59 2246 4492 T2515 0. 0.49 2695 5390 T15 0. 3144 6288 T3810 0.27 0.41 0.68 1. 1109 2217 T2510 0.34 0.57 1.13 1331 21 T10 0.10 0.19 0.29 0.49 0.97 1863 35 T3815 0.45 1925 3850 T2515 0.19 0.75 2310 4620 T15 0.10 0.16 0.32 0.65 2695 5390 T3810 0.10 0.20 0.40 0. 1.00 970 1940 T2510 0.33 0.50 0.83 1. 1164 2328 T10 0.29 0.43 0.71 1. 16 3259 T3815 0.20 0.33 0.67 1684 39 T2515 0.55 1.11 2021 4043 T15 0.10 0.24 0. 0.95 2358 4716 Load = lbs. / ft. OF WIDTH T3815 0.19 0.93 1497 2994 T2515 0.16 0.39 0.78 1797 3593 T15 0.20 0.33 0.67 1.33 2096 4192 T3815 0.63 1.26 13 2695 T2515 0.10 0.31 0.52 1.05 1617 3234 T15 0.27 0.45 0.90 1887 3773 T3815 0.33 0.50 0.84 1.67 25 2450 T2515 0. 0.70 1.39 1470 2940 T15 0. 0.24 0. 1.19 1715 34 T3815 0.22 0.43 0.65 1.08 2.16 13 2246 T2515 0. 0.90 1.80 13 2695 T15 0.31 0.46 0.77 1.55 15 3144 IMPORTANT: Installation should provide for fully supported abutments of grating panels. Otherwise, higher deflection values may be experienced, and tripping hazards may occur. Stub bars should not be less than 1" in clip attachment areas. Safe-T-Span pedestrian grating load bars at platform edges should be fully supported. 15