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Documentation - Molded Grating - .75x4xh1.5-standard
0.75 × 4 × H 1.5" (19 × 100 × H 38 mm) Standard
Product Overview
This 1.5-inch-deep molded FRP grating uses a directional 0.75-inch × 4-inch rectangular mesh. The closely spaced load-bearing bars and increased panel depth provide greater stiffness and span capability than the 1-inch-deep version, while the elongated openings maintain a high percentage of open area for drainage, airflow, and light transmission.
This configuration is suited to applications where the primary span direction is known and the support structure can be aligned with the load-bearing bars. Common uses include industrial walkways, equipment platforms, elevated maintenance access, trench and drainage covers, wastewater facilities, marine structures, chemical-processing plants, ventilation panels, and other corrosive environments requiring a relatively lightweight panel with enhanced structural performance.
Dimensional Drawings
Product Specifications
Style
Standard
Top Open Area
59%
| Measurement | Metric | Imperial |
|---|---|---|
| Mesh Length | 19 mm | 0.75 in |
| Mesh Width | 100 mm | 4.0 in |
| Mesh Thickness | 38 mm | 1.5 in |
| Bar Thickness at Top | 7 mm | 0.275 in |
| Bar Thickness at Bottom | 5 mm | 0.20 in |
| Maximum Panel Width | 1220 mm | 48 in |
| Maximum Panel Length | 3660 mm | 144 in |
| Weight | 21.97 kg/m2 | 4.5 lb/ft2 |
Load Tables
Uniform Load — Deflection in Inches
| Clear Span (in) |
50 lb/ft2 |
65 lb/ft2 |
100 lb/ft2 |
150 lb/ft2 |
200 lb/ft2 |
300 lb/ft2 |
500 lb/ft2 |
1,000 lb/ft2 |
2,000 lb/ft2 |
Maximum Recommended Load (lb/ft2) |
Ultimate Load (lb/ft2) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 12 | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 | 0.01 | 0.02 | 0.03 | 0.07 | 3,348 | 16,738 |
| 18 | 0.01 | 0.01 | 0.02 | 0.03 | 0.03 | 0.05 | 0.09 | 0.18 | 0.34 | 1,522 | 7,610 |
| 24 | 0.03 | 0.03 | 0.05 | 0.08 | 0.10 | 0.14 | 0.25 | — | — | 859 | 4,296 |
| 30 | 0.06 | 0.09 | 0.12 | 0.18 | 0.27 | 0.37 | — | — | — | 535 | 2,673 |
| 36 | 0.13 | 0.18 | 0.27 | 0.41 | — | — | — | — | — | 343 | 1,714 |
| 42 | 0.23 | 0.32 | — | — | — | — | — | — | — | 256 | 1,280 |
| 48 | 0.42 | — | — | — | — | — | — | — | — | 190 | 950 |
Line Load — Deflection in Inches
| Clear Span (in) |
50 lb/ft |
100 lb/ft |
200 lb/ft |
300 lb/ft |
500 lb/ft |
1,000 lb/ft |
2,000 lb/ft |
Maximum Recommended Load (lb/ft) |
Ultimate Load (lb/ft) |
|---|---|---|---|---|---|---|---|---|---|
| 12 | <0.01 | <0.01 | 0.01 | 0.02 | 0.03 | 0.06 | 0.11 | 1,611 | 8,057 |
| 18 | 0.01 | 0.02 | 0.03 | 0.05 | 0.09 | 0.18 | 0.38 | 1,117 | 5,583 |
| 24 | 0.02 | 0.04 | 0.09 | 0.13 | 0.20 | 0.41 | — | 809 | 4,047 |
| 30 | 0.04 | 0.08 | 0.16 | 0.23 | 0.38 | — | — | 626 | 3,129 |
| 36 | 0.07 | 0.15 | 0.28 | 0.42 | — | — | — | 570 | 2,850 |
| 42 | 0.11 | 0.21 | — | — | — | — | — | 465 | 2,324 |
| 48 | 0.17 | 0.34 | — | — | — | — | — | 417 | 2,083 |
Note: See Appendix A — Load Table Notes for assumptions, limitations, safety factors, and interpretation guidance.