Pultruded I-bar
I-Bar PI-1050
PI-1050
PI-1050 combines a 1-inch depth with 50% open area at 2.97 lbs/sf. Use its published load table to check walkways and removable access panels.
Panel Specifications
- Panel size
- 5' x 20'
- Approx. weight
- 2.97 lbs/sf
- Open area
- 50%
- Load bar depth
- 1"
- Bar centers
- 1.2"
- Bars per foot of width
- 10
- Engineering properties per foot of width
- A=3.05in2I=0.39in4S=0.77in3

Typical uses
- Access walkways
- Removable panels
Material & Surface Options
- Resin systems
- Type V Vinyl ester (230°F) · Type I Isophthalic polyester (220°F) · Type O Orthophthalic polyester (160°F)
- Choose a Walking Surface
- Concave (as-molded) · Grit top · Covered / plated
- Standard colors
- Dark grey, Light grey, Green, Yellow, Orange
- Flame spread (ASTM E84)
- Class 1, 25 or less
Load & deflection data
Load & Deflection Data
Published deflection values in inches at the listed spans and loads. Review each table's notes and support conditions with your project engineer.
Uniform load (lbs/sq ft)
| Span | 50 | 100 | 150 | 200 | 250 | 500 | 1000 | 2000 | Max rec. load (lbs/sq ft) | Apparent EI ×10⁶ (lb-in²) |
|---|---|---|---|---|---|---|---|---|---|---|
| 12" | 0.001 | 0.002 | 0.002 | 0.003 | 0.004 | 0.008 | 0.017 | 0.033 | 11887 | 1.36 |
| 18" | 0.003 | 0.007 | 0.010 | 0.014 | 0.017 | 0.035 | 0.069 | 0.138 | 6299 | 1.65 |
| 24" | 0.010 | 0.019 | 0.029 | 0.038 | 0.048 | 0.096 | 0.191 | 0.383 | 3621 | 1.88 |
| 30" | 0.022 | 0.044 | 0.066 | 0.088 | 0.110 | 0.221 | 0.442 | — | 2308 | 1.99 |
| 36" | 0.045 | 0.091 | 0.136 | 0.181 | 0.227 | 0.453 | — | — | 1591 | 2.01 |
| 42" | 0.083 | 0.166 | 0.249 | 0.333 | 0.416 | — | — | — | 1175 | 2.03 |
| 48" | 0.140 | 0.281 | 0.421 | 0.562 | — | — | — | — | 898 | 2.05 |
| 54" | 0.224 | 0.448 | 0.672 | — | — | — | — | — | 709 | 2.06 |
| 60" | 0.340 | 0.679 | — | — | — | — | — | — | 638 | 2.07 |
Line load (lbs/ft of width)
| Span | 50 | 100 | 150 | 200 | 250 | 500 | 1000 | 2000 | Max rec. load (lbs/ft of width) | Apparent EI ×10⁶ (lb-in²) |
|---|---|---|---|---|---|---|---|---|---|---|
| 12" | 0.001 | 0.003 | 0.004 | 0.005 | 0.007 | 0.013 | 0.026 | 0.053 | 7185 | 1.36 |
| 18" | 0.004 | 0.007 | 0.011 | 0.015 | 0.018 | 0.037 | 0.074 | 0.147 | 4790 | 1.65 |
| 24" | 0.008 | 0.015 | 0.023 | 0.031 | 0.038 | 0.077 | 0.153 | 0.306 | 3593 | 1.88 |
| 30" | 0.014 | 0.028 | 0.042 | 0.057 | 0.071 | 0.141 | 0.283 | 0.565 | 2874 | 1.99 |
| 36" | 0.024 | 0.048 | 0.073 | 0.097 | 0.121 | 0.242 | 0.484 | — | 2395 | 2.01 |
| 42" | 0.038 | 0.076 | 0.114 | 0.152 | 0.190 | 0.380 | — | — | 2053 | 2.03 |
| 48" | 0.056 | 0.112 | 0.169 | 0.225 | 0.281 | 0.562 | — | — | 1796 | 2.05 |
| 54" | 0.080 | 0.159 | 0.239 | 0.318 | 0.398 | — | — | — | 1597 | 2.06 |
| 60" | 0.109 | 0.217 | 0.326 | 0.435 | 0.543 | — | — | — | 1437 | 2.07 |
| 66" | 0.144 | 0.288 | 0.432 | 0.576 | — | — | — | — | 1307 | 2.08 |
| 72" | 0.186 | 0.372 | 0.558 | — | — | — | — | — | 1198 | 2.09 |
Pultruded I-bar
Others in this family
| Configuration | Load bar depth | Bar centers | Weight | Open |
|---|---|---|---|---|
| I-Bar PI-1040PI-1040 | 1" | 1" | 3.47 lbs/sf | 40% |
| I-Bar PI-1060PI-1060 | 1" | 1 1/2" | 2.47 lbs/sf | 60% |
| I-Bar PI-1540PI-1540 | 1 1/2" | 1" | 4.22 lbs/sf | 40% |
| I-Bar PI-1550PI-1550 | 1 1/2" | 1.2" | 3.60 lbs/sf | 50% |
| I-Bar PI-1560PI-1560 | 1 1/2" | 1 1/2" | 2.97 lbs/sf | 60% |
| I-Bar PI-1240PI-1240 | 1 1/4" | 1" | 3.77 lbs/sf | 40% |
| I-Bar PI-1250PI-1250 | 1 1/4" | 1.2" | 3.22 lbs/sf | 50% |
| I-Bar PI-1260PI-1260 | 1 1/4" | 1 1/2" | 2.67 lbs/sf | 60% |
| I-Bar PI-3050PI-3050 | 3" | 1.2" | 10.34 lbs/sf | 50% |
| I-Bar PI-3060PI-3060 | 3" | 1 1/2" | 8.40 lbs/sf | 60% |
Request a quote
Request Pricing for This Configuration
Provide the quantity, resin requirements and delivery ZIP code. Include the clear span and design load so the configuration can be reviewed.