GRIDWALK^® is light weight and easy to install, requiring fewer man hours and simple hand tools for installation (the installed cost is the same as steel and over its life less expensive).  Our quality assurance team subjects GRIDWALK^® to extreme tests for chemical resistance, ultraviolet resistance, impact resistance, load carrying capabilities and strength.  GRIDWALK^® is slip resistant and non-conductive with a flame spread reading ranging from 5 to 25 or less.  GRIDWALK^® High Strength Molded Grating meets the requirements for grating used in the most demanding industries such as chemical, refining, offshore, pulp & paper, food & beverage, marine, water & waste treatment, electronic and plating.

FEATURES OF GRIDWALK^®FIBERGLASS GRATING

GRIDWALK^®is both versatile and flexible in industrial applications:

Corrosion Resistant	Non-Magnetic	Easy to Maintain	Non-Slip

Fire Resistant	Lightweight	Impact Resistant

INDUSTRIAL APPLICATIONS

GRIDWALK® may be used as: Flooring Stairs Trench Covers Bridges Machinery Guards Ramps Walkways Battery Racks

SPECIFICATIONS

Resin Systems
Resin Type	Resin Base	Description	Corrosion Resistance	Flame Spread Rating ASTM E84	Available colors	Max.Oper. Temp.
Type V	Vinyl Ester	Superior Corrosion Resistance and Fire Retardant	Excellent	Class 1, 25 or less	Dark Grey*	230oF
Type I	Isophthalic Polyester	Industrial Grade Corrosion Resistance and Fire Retardant	Very Good	Class 1, 25 or less	Green, Yellow, Light Grey	221oF
Type F	Isophthalic Polyester	Food Grade Corrosion Resistance and Fire Retardant	Very Good	Class 2, 75 or less	Light Grey	221oF
Type O	Ortho	Moderate Corrosion Resistance and Fire Retardant	Moderate	Class 1, 25 or less	Green, Dark Grey	212oF
Type P	Phenolic	Low Smoke and Superior Fire Resistance	Very Good	Class 1, 5 or less	Reddish-Brown	356oF

*other colors available upon request

Standard Grating Sizes and Specifications  (Imperial - USA Sizes)
Grating Thickness	Mesh (Bearing Bar Ctr)	Bars per Ft.	Bar Thickness (Top & Bottom)	Standard Panel Size	Est.Wt. In Lbs.		Lbs. Per Sq. Ft.		Open Area	Min. Glass Content		Resins Available
					I	V*	I	V*		I	V*
1"	1-1/2" square	8	.25" x .20"	4' x 8' 3' x 10' 4' x 12'	81 76 121	79 74 115	2.5	2.4	68%	37%	39%	Type V,I,F,O
1"	1"x4" rectangular	12	.25" x .20"	3' x 10'	79	77	2.6	2.5	68%	34%	35%	Type V,I,F,O
1-1/2"	0.79" square (Mini-Mesh)	15	.27" x .21"	4' x 12'	215	210	4.5	4.4	42%	36%	37%	Type V,I,F,O
1-1/4"	1-1/2" square	8	.26" x .19"	4' x 8' 3' x 10' 4' x 12'	102 96 153	99 93 149	3.2	3.1	68%	38%	40%	Type V,I,F,O
1-1/2"	1-1/2" square	8	.26" x .19"	4' x 8' 3' x 10' 4' x 12'	122 114 185	118 111 178	3.8	3.7	68%	38%	40%	Type V,I,F,O,P
2"	2" square	6	.31" x .21"	4' x 12'	215	208	4.5	4.3	71%	38%	39%	Type V,I,F,O

Standard Grating Sizes and Specifications  (Metric Sizes)
Grating Thickness	Mesh (Bearing Bar Ctr)	Bars per Meter	Bar Thickness (Top & Bottom)	Standard Panel Size	Est.Wt. In Kgs		Kgs Per Sq. Meter		Open Area	Min. Glass Content		Resins Available
					I	V*	I	V*		I	V*
25 mm	40 mm square	26	6.35 mm x 5.08 mm	2M x 1M 3M x 1M 4M x 1M	24.4 36.6 48.8	23.4 35.1 46.8	12.2	11.7	68%	37%	39%	Type V,I,F,O
30 mm	40 mm square	26	6.35 mm x 5.08 mm	2M x 1M 3M x 1M 4M x 1M	31.2 46.8 62.4	30.2 45.3 60.4	15.6	15.1	68%	38%	40%	Type V,I,F,O
30 mm	20 mm square (Mini-Mesh)	49	6.85 mm x 5.33 mm	2M x 1M 3M x 1M 4M x 1M	37.0 55.5 74.0	36.2 54.3 72.4	18.5	18.1	42%	36%	37%	Type V,I,F,O
38 mm	40 mm square	26	6.35 mm x 5.08 mm	2M x 1M 3M x 1M 4M x 1M	37.0 55.5 74.0	36.2 54.3 72.4	18.5	18.1	68%	38%	40%	Type V,I,F,O,P
40 mm	40 mm square	26	6.35 mm x 5.08 mm	2M x 1M 3M x 1M 4M x 1M	43.8 65.7 87.6	41.8 62.7 83.6	21.9	20.9	71%	38%	39%	Type V,I,F,O

All panels have two surface choices:

1. Anti-Skid concave surface 
2. Extra Anti-Skid Silicon Carbide gritted surface.
   Other thicknesses and size (including Metric) available upon request.

* Type V contains more resin resulting in superior chemical resistance.

For safety information, see our "Material Safety Data Sheet"

TOLERANCES FOR OPEN MOLDED GRATING

Grating Tolerances
Panel Size	Length:	1/32" per lineal foot
	Width:	1/32"per lineal foot
Panel Height		+/- 1/16"
Panel Flatness		+/- 0.1" per lineal foot

Grating Clearances
Side to Trenches	+/- 1/4"
Gratings ends to Wall	+/- 1/2"
Gap between Panels	+/- 1/4"

Cutting Tolerances
Rectangular Cuts	+/- 1/4"
Straight Cuts	+/- 1/4"
Circular Cuts	+/- 3/4"

Tolerances recommended by the Fiberglass Grating Manufacturers' Council.

COMPARISON OF MOLDED AND PULTRUDED GRATING

Case Studies

Molded Grating	Pultruded Grating
Imagine a giant 4 ft x 12 ft waffle iron (mold). Liquid resin and continuous fiberglass roving are systematically laid in the mold, layer after layer manually, to produce the desired thickness and panel dimensions. The finished molds are set aside for a predetermined time to allow the panel to cure. The panel is then ejected from the mold. The molds are cleaned and prepared for the process to begin again. The one piece interwoven square mesh construction of molded grating produces two primary benefits: maximum corrosion resistance and high strength. Because the grating is "cast" in one piece, there is no mechanical joint between bearing bars, unlike the pultruded grating where the glued joints can give way in heavy continuous traffic or after prolonged service. The high percentage of resin (65%) in molded grating offers superior corrosion resistance. The molded grating with a square mesh pattern offers increased load capacity and panel utilization due to this bi-directional trait. Cutting access holes in the molded grating does not weaken the panel and does not require additional or costly supports (unlike pultruded grating that must be re-supported and edge-banded).	The pultruded grating product is a mostly mechanized process. Fiberglass of different shapes such as: strand, mat and veil are pulled through a liquid resin bath and a heated die where the bar is shaped and the resin is cured. These pultruded bars can be cut into 12 ft, 15 ft or 20 ft lengths. The bars are then taken to a workstation and drilled (6" or 12" on center) on the sides to accept the crossbars. The drilled bars are spaced proportionally for the width of the panel; 3 ft, 4 ft or 5 ft. The final step is to seal the entire cross bars and holes with corrosion resistant epoxy resin. The pultruded grating provides increased load capacity with moderate levels of corrosion resistance. The components (bearing bars and cross bars) are pulled by machine to have a higher glass content. Its superior load capacity to molded grating is a result of the higher glass to resin ratio (65% glass to 35% resin). However, the lower resin content reduces the corrosion resistance as compared to the molded grating. The pultrusion process is automated and produces a consistent, high quality finished product. Assembled from bars, the pultruded grating can offer a wide variety of panel sizes and substantially reduce "scrap loss" not always possible from molded grating panels.

Top | Case Studies

Please see our GRIDWALK®  High Strength Molded Grating Catalogue. This requires the Acrobat reader program to view. You can download this program for free by clicking on this Acrobat icon.