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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.

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Dimensional Drawings

Imperial dimensional drawing for 0.75 by 0.75 inch mesh by 1.2 inch deep molded FRP minimesh grating
Figure 4: Imperial Units
Metric dimensional drawing for 19 by 19 millimeter mesh by 30 millimeter deep molded FRP minimesh grating
Figure 5: Metric Units

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.

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