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Documentation - Molded Grating - .75x.75xh1.2-minimesh
0.75 × 0.75 × H 1.2" (19 × 19 × H 30 mm) Minimesh
Product Overview
This 1.2-inch-deep molded FRP minimesh grating combines a small 0.75-inch top opening with a 1.5-inch structural base mesh. Compared with the 1-inch-deep version, the increased depth provides greater stiffness and load capacity while retaining the pedestrian-friendly surface and reduced opening size associated with minimesh construction.
Common uses include elevated walkways, platforms, trench covers, maintenance access areas, mezzanines, docks, marine facilities, wastewater and water-treatment facilities, food-processing plants, chemical-processing environments, and applications where corrosion resistance, drainage, and reduced object pass-through are required.
Dimensional Drawings
Product Specifications
Style
Minimesh
Top Open Area
44%
| Measurement | Metric | Imperial |
|---|---|---|
| Mesh Length (Mini) | 19 mm | 0.75 in |
| Mesh Width (Mini) | 19 mm | 0.75 in |
| Mesh Length (Base) | 38 mm | 1.5 in |
| Mesh Width (Base) | 38 mm | 1.5 in |
| Mesh Thickness | 30 mm | 1.2 in |
| Bar Thickness at Top (Mini) | 6.1 mm | 0.24 in |
| Bar Thickness at Bottom (Mini) | 5 mm | 0.20 in |
| Bar Thickness at Top (Base) | 6.5 mm | 0.26 in |
| Bar Thickness at Bottom (Base) | 5 mm | 0.20 in |
| Maximum Panel Width | 991 mm | 39 in |
| Maximum Panel Length | 4039 mm | 159 in |
| Weight | 18.31 kg/m2 | 3.8 lb/ft2 |
Actual Panel Sizes and Tolerances
Minimesh panels are supplied closed-web, with all perimeter cells fully closed. Because each molded cell has a 1.50-inch pitch and a perimeter web of approximately 0.27 inch is added, the finished size equals the nearest whole-cell multiple plus the outer web.
For example, a nominal 4 ft × 8 ft closed-web panel is finished at approximately 48.27 in × 96.27 in. When exact nominal edges are required, specify open-edge trim. Open-edge trimming exposes the perimeter cells.
Table 4: Nominal vs. Finished Closed-Web Panel Dimensions — Minimesh
| Nominal (ft) | Nominal (mm) | Finished Closed-Web (ft-in) | Finished (mm) |
|---|---|---|---|
| 3′ × 10′ | 914.4 × 3048.0 | 3′-0.27″ × 10′-0.27″ | 921.3 × 3054.9 |
| 4′ × 8′ | 1219.2 × 2438.4 | 4′-0.27″ × 8′-0.27″ | 1226.1 × 2445.3 |
| 4′ × 10′ | 1219.2 × 3048.0 | 4′-0.27″ × 10′-0.27″ | 1226.1 × 3054.9 |
| 4′ × 12′ | 1219.2 × 3657.6 | 4′-0.27″ × 12′-0.27″ | 1226.1 × 3664.5 |
| 5′ × 8′ | 1524.0 × 2438.4 | 5′-0.27″ × 8′-0.27″ | 1530.9 × 2445.3 |
| 5′ × 10′ | 1524.0 × 3048.0 | 5′-0.27″ × 10′-0.27″ | 1530.9 × 3054.9 |
| 5′ × 12′ | 1524.0 × 3657.6 | 5′-0.27″ × 12′-0.27″ | 1530.9 × 3664.5 |
| 3′ × 12′ | 914.4 × 3657.6 | 3′-0.27″ × 12′-0.27″ | 921.3 × 3664.5 |
Note: Cell pitch = 1.50 in (38.1 mm); perimeter web ≈ 0.27 in (6.9 mm).
Table 5: Panel Dimension Tolerances
| Tolerance Type | Allowance (Metric) | Allowance (Imperial) |
|---|---|---|
| Panel tolerances — width, length, and diagonal | ±2 mm | ±0.08 in |
| Cut-panel tolerances — width, length, and diagonal. If the cut falls on a load bar, the tolerance may be greater. | ±4 mm | ±0.16 in |
| Mesh-pattern tolerance | ±1.5 mm; outside load bars approximately 1 mm larger | ±0.06 in; outside load bars approximately 0.04 in larger |
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 | 0.02 | 0.03 | 0.05 | 0.10 | 1,976 | 9,878 |
| 18 | 0.01 | 0.01 | 0.02 | 0.03 | 0.04 | 0.06 | 0.11 | 0.22 | 0.44 | 1,138 | 5,688 |
| 24 | 0.03 | 0.04 | 0.06 | 0.09 | 0.11 | 0.17 | 0.31 | 0.62 | — | 635 | 3,173 |
| 30 | 0.08 | 0.09 | 0.15 | 0.21 | 0.29 | 0.44 | 0.73 | — | — | 415 | 2,073 |
| 36 | 0.15 | 0.19 | 0.29 | 0.43 | 0.58 | — | — | — | — | 274 | 1,368 |
| 42 | 0.28 | 0.35 | 0.54 | — | — | — | — | — | — | 196 | 980 |
| 48 | 0.40 | 0.52 | — | — | — | — | — | — | — | 104 | 520 |
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 | 0.02 | 0.02 | 0.04 | 0.08 | 0.16 | 1,211 | 6,053 |
| 18 | 0.01 | 0.02 | 0.04 | 0.07 | 0.11 | 0.22 | 0.44 | 802 | 4,010 |
| 24 | 0.02 | 0.05 | 0.10 | 0.14 | 0.25 | 0.50 | — | 609 | 3,044 |
| 30 | 0.04 | 0.09 | 0.19 | 0.27 | 0.45 | — | — | 488 | 2,438 |
| 36 | 0.08 | 0.16 | 0.32 | 0.48 | — | — | — | 398 | 1,990 |
| 42 | 0.13 | 0.24 | 0.43 | 0.65 | — | — | — | 370 | 1,852 |
| 48 | — | — | — | — | — | — | — | — | — |
Note: See Appendix A — Load Table Notes for assumptions, limitations, safety factors, and interpretation guidance.