Galvanized Expanded Metal Driveway Steel Grating Grates Grid For
Steel bar grating is manufactured from ASTM A-1011 mild carbon
steel and is available in three distinct products: type "W" welded bar grating, type "DT" dovetail pressure locked grating, and type "SL" swage locked grating. All three products are available with
bearing bar spacing ranging from 19/16" (1-3/16") to 7/16" on
center and cross bars at either 4" or 2" on center.
Each product has a standard plain surface or may be specified with
optional serrated or Algrip surfaces.
Finish options include bare steel, painted, hot dip galvanized, or
specialty coatings. The steel bar grating load tables provide
detailed specification information related to these products.
Fisholow aluminum gratings employ a unique interlocking system that
joins the bearing and cross bars together in panels of exceptional
rigidity and strength.
Lightweight, corrosion-resistant, non-sparking alloys are ideal for
pedestrian platforms in chemical, petroleum, hydro and food
processing plants, in sewage, water and waste water treatment
facilities. Also available in close mesh and serrated.
U= Safe Uniform Load, in lbs per sq ft or kPa
C= Safe Concentrated Load in lbs per foot of grating width or kN
per metre of grating width
D= Deflection in inches or mm
Welded Heavy Duty Gratings are designed to service applications
subject to heavy rolling and static loads such as highways, plant
floors, loading docks, inlet covers, and airports. Since conditions
can range from smaller forklift to large truck or aircraft traffic,
heavy duty gratings are manufactured in a wide range of bar sizes
Vehicular loads are designed in conformance with current AASHTO
specifications for classifications H-15 through H-25. Automobile
and forklift loads are similarly evaluated with loads calculated
and distributed in accordance with the "Maximum Traffic Conditions"
Steel Bar Grating with bearing bars thicker than 3/16" is
considered to be "Heavy Duty" and carries the designation prefix
"Type HD". Available bar thicknesses are 1/4" (6.4mm) , 5/16"
(7.9mm) and 3/8" (9.5mm) in either plain or serrated surface.
Standard depths range from 1" (25mm) up to 4" (102mm), although
larger sizes are available upon request.
Tru-Weld Heavy Duty Steel Bar Grating is commonly used for floor
trenches and sump covers exposed to heavy equipment traffic. It is
used extensively through out mining, power generation, highways,
airfields, and on truck terminal loading docks and ramps. It is
suitable for large single span conditions or where grating must be
support extreme loads.
*All weights will increase by 5% when galvanized.
If your application is not adequately addressed by these load
conditions, please contact our Engineering Department and we will
gladly assist in the selection of an appropriate heavy duty grating
for your specific need.
Materials & Spacings
Heavy duty gratings are manufactured in carbon steel and 300 series
stainless steels. Carbon steel products are available bare (no
finish), painted with manufacturers standard paint, or hot dip
galvanized. Stainless steel products are available mill finish,
commercially cleaned, or electro-polished. Below you will find a
table of spacings for our most popular products.
25x3, 25x4, 25x4.5, 25x5, 30x3, 30x4, 30x4.5, 30x5, 32x5, 40x5,
50x5, 65x5, 75x6, 75x10,100x10mm etc;
I bar: 25x5x3, 30x5x3, 32x5x3, 40x5x3 etc.
US standard: 1'x3/16', 1 1/4'x3/16', 1 1/2'x3/16',
1'x1/4', 1 1/4'x1/4', 1 1/2'x1/4', 1'x1/8', 1 1/4'x1/8',
1 1/2'x1/8' etc.
|2||Bearing Bar Pitch|
12.5, 15, 20, 25, 30, 32, 35, 38, 40, 60, 80mm etc.
US standard: 19-w-4, 15-w-4, 11-w-4, 19-w-2, 15-w-2 etc.
|3||Twisted Cross Bar Pitch|
50, 60, 76, 100, 120mm etc.
US standard: 2' & 4' etc.
|4||Surface Treatment||Black, self colour, hot dip galvanized, painted, spray coating|
|5||Grating Style||Plain / Smooth, Serrated /teeth, I bar, serrated I bar|