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Documentation - Molded Grating - .75x.75xh1-minimesh

0.75 × 0.75 × H 1" (19 × 19 × H 25 mm) Minimesh

Product Overview

This 1-inch-deep molded FRP minimesh grating combines a reduced 0.75-inch top opening with a 1.5-inch structural base mesh. The smaller surface openings provide improved pedestrian comfort and reduce the potential for small objects, tools, and debris to pass through the grating while maintaining drainage and ventilation.

Common applications include pedestrian walkways, elevated platforms, mezzanines, trench covers, equipment access areas, maintenance platforms, marine environments, food and beverage facilities, water and wastewater plants, and other locations where corrosion resistance and smaller surface openings are preferred.

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Dimensional Drawings

Imperial dimensional drawing for 0.75 by 0.75 inch mesh by 1 inch deep molded FRP minimesh grating
Figure 1: Imperial Units
Metric dimensional drawing for 19 by 19 millimeter mesh by 25 millimeter deep molded FRP minimesh grating
Figure 2: 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 25 mm 1.0 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 1220 mm 48 in
Maximum Panel Length 3660 mm 144 in
Weight 15.26 kg/m2 3.1 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 2: 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 3: 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 0.06 0.13 1,730 8,648
18 0.01 0.02 0.03 0.04 0.06 0.08 0.14 0.28 — 763 3,814
24 0.04 0.05 0.08 0.11 0.15 0.24 0.42 — — 434 2,172
30 0.10 0.13 0.19 0.29 0.41 — — — — 274 1,372
36 0.20 0.27 0.40 — — — — — — 191 954
42 0.38 0.49 — — — — — — — 149 743

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 0.03 0.05 0.10 0.19 923 4,616
18 0.01 0.03 0.06 0.09 0.15 0.29 — 616 3,080
24 0.03 0.07 0.13 0.19 0.33 — — 431 2,153
30 0.06 0.12 0.25 0.38 — — — 371 1,855
36 0.11 0.22 0.43 — — — — 298 1,491
42 0.17 0.33 — — — — — 252 1,260

Note: See Appendix A — Load Table Notes for assumptions, limitations, safety factors, and interpretation guidance.

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