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MarCo Specialty Steel, Inc
Wire Cloth Perforated Metal Expanded Metal Bar Grating Grip Strut® Perf-O Grip® Hex Metal
Wire Cloth Perforated Expanded Bar Grating Grip Strut® Perf-O Grip® Hex Metal
 
Email Enquiry
Contact Information

Phone:
(713) 649-5310
(800) 200-3047

Fax:
(713) 649-5305

Mailing Address
Marco Specialty Steel, Inc.
P.O. Box 590643
Houston, Texas 77259-0643

Physical Address
Marco Specialty Steel, Inc.
6633 Lindbergh
Houston, Texas 77087
 


Bar Grating
Load and Deflections Tables
All measurements are center to center of bearing bars.

 STEEL BAR
   
  Welded & Press Locked  19-W-4

(1-3/16")
19-W-2

(15/16")
 
  Welded Close-Mesh & Press Locked
  Close-Mesh 		 13-W-4
(13/16")
11-W-4

(11/16")
10-W-4
(5/8")
8-W-4
(1/2")
 
  Press-Locked Close-Mesh  7-P-4
(7/16")
 
  Stainless Welded & Stainless Press-Locked  19-S-4

(1-3/16")
19-SP-4

(1-3/16")
 
  Railroad Grating (AAR Approved)  25-W-4

(1-9/16")
27-W-4

(1-11/16") 
 HEAVY DUTY STEEL    
     
  Heavy Duty Welded 15-H-4

(15/16")
19-H-4 (1-3/16") 
22-H-4 (1-3/8")
30-H-4 (1-7/8")
38-H-4

(2-3/8")
     
     
 ALUMINUM GRATING    
     
I-Bar Swage Locked 19-SI-4 (1-3/16")
15-SI-4

(15/16")
11-SI-4 (11/16") 
     
I-Bar Swage Locked Close-Mesh 8-SI-4 (1/2")
     
Rectangular Bar Swage-Locked & Press Locked 19-SR-4
19-AP-4		 (1-3/16")
  15-SR-4
15-AP-4		 (15/16") 
     
Press-Locked Close Mesh 13-AP-4 (13/16")
     
Rectangular Bar Swage-Locked Close Mesh & Press-Locked Close Mesh 11-SR-4
11-AP-4		 (11/16")
10-AP-4 (5/8")
8-SR-4
8-AP-4		 (1/2") 
7-AP-4 (7/16")
     
Duo Grip™ Extruded Table of Safe Spans
     
     
 RIVETED GRATING    
     
Steel Riveted Grating 18-R-7 (1-1/8")
12-R-7 (3/4")
     
Aluminum Riveted Grating 18-AR-7 (1-1/8")
12-AR-7 (3/4")
     
     
 RIV-DEXTEEL® BRIDGE DECK GRATING  
   
Basics for Design  Load Distribution per AASHTO



 
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Grip Strut , Perf-O Grip and Grate Lock are registered trademarks of GS Metals
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