The diversity of expanded metals pushes us to continually develop and improve
the processes and standards used in its production. If you have need of a special
material not shown within the website, please use our 'Contact
Us' form or give us a call. We can meet your functional or structural need.
Return to our 'Expanded Metals' page, or browse our
'Expanded Metal Grating', 'Sun
Shade & Micro-Mesh' and 'Expanded Mini-Mesh'
pages for product specs of each type. Be sure to view the 'Expanded
Solutions Process' page for a technical overview of the process and terminology.
- Grating is the most economical industrial walking surface you can install
in your plant.
- Walking surface is anti-skid, providing safe foothold.
- The open design allows effective sprinkler coverage for fire protection;
prevents dirt, grease or snow accumulation; it enables a visual 'see-through'
area inspection; lowers maintenance costs.
- Expanded Solutions grating costs less
than bar-type or sheet metal grating and is easier to install
in new or replacement applications.
Please Note:
The information provided is for descriptive purposes only - NOT FOR DESIGN
| Concentrated & Uniform
Load Deflection Tables/Fixed Span |
 |
|
Carbon
Steel - - - - - - - - - - - - - Style - Lbs. Per Sq. Ft. |
|
Aluminum |
|
| 3 |
|
3.14 |
|
4 |
|
4.27 |
|
5 |
|
6.25 |
|
7 |
|
2 |
|
|
Load |
|
|
|
D |
|
|
|
Load |
|
|
|
D |
|
|
|
Load |
|
|
|
D |
|
|
|
Load |
|
|
|
D |
|
|
|
Load |
|
|
|
D |
|
|
|
Load |
|
|
|
D |
|
|
|
Load |
|
|
|
D |
|
|
|
Load |
|
|
|
D |
|
|
|
24"
SPAN |
|
|
U |
|
|
275 |
|
|
|
.250 |
|
|
|
375 |
|
|
|
.250 |
|
|
|
350 |
|
|
|
.240 |
|
|
|
500 |
|
|
|
.245 |
|
|
|
600 |
|
|
|
.240 |
|
|
|
800 |
|
|
|
.220 |
|
|
|
800 |
|
|
|
.210 |
|
|
|
|
|
|
|
|
|
| C |
|
|
275 |
|
|
|
.250 |
|
|
|
375 |
|
|
|
.250 |
|
|
|
440 |
|
|
|
.250 |
|
|
|
400 |
|
|
|
.250 |
|
|
|
540 |
|
|
|
.245 |
|
|
|
800 |
|
|
|
.220 |
|
|
|
800 |
|
|
|
.220 |
|
|
|
250 |
|
|
|
.250 |
|
|
|
36"
SPAN |
|
|
U |
|
|
100 |
|
|
|
.220 |
|
|
|
150 |
|
|
|
.240 |
|
|
|
150 |
|
|
|
.245 |
|
|
|
165 |
|
|
|
.245 |
|
|
|
175 |
|
|
|
.240 |
|
|
|
300 |
|
|
|
.250 |
|
|
|
400 |
|
|
|
.250 |
|
|
|
|
|
|
|
|
|
| C |
|
|
165 |
|
|
|
.250 |
|
|
|
155 |
|
|
|
.250 |
|
|
|
220 |
|
|
|
.250 |
|
|
|
225 |
|
|
|
.240 |
|
|
|
310 |
|
|
|
.250 |
|
|
|
300 |
|
|
|
.240 |
|
|
|
350 |
|
|
|
.240 |
|
|
|
100 |
|
|
|
.250 |
|
|
|
48"
SPAN |
|
|
U |
|
|
|
|
|
|
|
|
|
|
50 |
|
|
|
.250 |
|
|
|
50 |
|
|
|
.250 |
|
|
|
60 |
|
|
|
.250 |
|
|
|
100 |
|
|
|
.250 |
|
|
|
115 |
|
|
|
.240 |
|
|
|
165 |
|
|
|
.240 |
|
|
|
|
|
|
|
|
|
| C |
|
|
75 |
|
|
|
.250 |
|
|
|
75 |
|
|
|
.250 |
|
|
|
100 |
|
|
|
.250 |
|
|
|
100 |
|
|
|
.250 |
|
|
|
140 |
|
|
|
.250 |
|
|
|
150 |
|
|
|
.240 |
|
|
|
175 |
|
|
|
.250 |
|
|
|
50 |
|
|
|
.250 |
|
|
| U
- Uniform Load in Lbs. Per Sq. Ft. C - Concentrated
Load in Lbs. Per Sq. Ft. D - Deflection in inches |
| Selection
Chart (Carbon Steel)* |
|
CONCENTRATED
LOAD
(Lbs. Per Foot of Length
of Catwalk or Platform) |
|
|
CLEAR
SPAN
(Distance between supports, measured from the inside edge
of one support to the inside edge of the next support.) |
|
|
23" |
|
|
|
30" |
|
|
|
35" |
|
|
|
42" |
|
|
|
47" |
|
|
|
54" |
|
|
|
60" |
|
|
|
50
Lbs. Light or occasional pedestrian traffic |
|
|
|
3.0
3.14 |
|
|
|
3.0
3.14 |
|
|
|
3.0
3.14 |
|
|
|
3.0
3.14 |
|
|
|
3.0
3.14 |
|
|
|
4.0
4.27 |
|
|
|
5.0
6.25 |
|
|
|
100
Lbs. Normal or frequent pedestrian traffic |
|
|
|
3.0
3.14 |
|
|
|
3.0
3.14 |
|
|
|
3.0
3.14 |
|
|
|
4.0
4.27 |
|
|
|
5.0
6.25 |
|
|
|
7.0 |
|
|
|
7.0 |
|
|
|
150
Lbs. Heavy or constant pedestrian traffic |
|
|
|
3.0
3.14 |
|
|
|
4.0
4.27 |
|
|
|
4.0
4.27 |
|
|
|
5.0
6.25 |
|
|
|
6.25 |
|
|
|
7.0 |
|
|
|
|
|
|
|
200
Lbs. Pedestrian traffic with light equipment |
|
|
|
3.0
3.14 |
|
|
|
4.0
4.27 |
|
|
|
4.27
5.0 |
|
|
|
6.25 |
|
|
|
7.0 |
|
|
|
7.0 |
|
|
|
|
|
|
|
250
Lbs. |
|
|
|
4.0
4.27 |
|
|
|
5.0 |
|
|
|
5.0
6.25 |
|
|
|
7.0 |
|
|
|
The
concentrated load
deflections for this chart do
not exceed the 1/4" maximum
deflection as stated by Federal
Specification RR-G-661B
and the generally accepted
recommendation for normal
pedestrian comfort.
|
|
|
|
300
Lbs. |
|
|
|
4.0
4.27 |
|
|
|
5.0
6.25 |
|
|
|
6.25 |
|
|
|
|
|
|
|
|
350
Lbs. |
|
|
|
4.0
4.27 |
|
|
|
6.25 |
|
|
|
7.0 |
|
|
|
|
|
|
* Sizes listed do not imply availability
 |
Installation Procedures
For maximum load, position Long Way of Design parallel to the clear span.
LWD must be installed parallel to span. Butt or overlap one half of design.
No increase in overall thickness. |
| Bolt
or weld every 6 inches or every fourth design to rigid supports. |
| Install with straight edge
up (top - straight edge, bottom - rounded edge). Bonds of adjoining should
slope in same direction and align with adjoining pieces. |
 |
 |
This information is provided for illustration purposes only - NOT FOR DESIGN.
Confirm all load information with your engineer or architect.
| Machine Guards - OSHA
Expanded Metal Size Chart * |
|
Clearance
From Moving Parts At All Points. |
|
|
|
Largest
Mesh Approved |
|
|
|
Minimum
Gauge or Thickness |
|
|
|
Recommended
Expanded Metal Style Number |
|
|
|
under
4" |
|
|
|
1/2" |
|
|
|
#18 |
|
|
|
1/2"-#18 STD
1/2"-#16 FLAT or STD
1/2"-#13 FLAT or STD |
|
|
|
4" -
15" |
|
|
|
2" |
|
|
|
#13 |
|
|
|
1/2"-#13 FLAT or STD
3/4"-#9 FLAT or STD
1 1/2"-#9 FLAT or STD |
|
|
*Extract
from Table 0-12 OSHA
Table of Standard Material and Dimensions.
Subpart 0, Machine Guarding,
Paragraph 1910.2199, Page 10650. |