B2. BG-HDCS 131021

The fields with the red border are required.

AMICO BAR GRATING CALCULATOR
WELDED HEAVY DUTY GRATING
Input   Grating Options**
Enter design parameters in the yellow fields below.   Style Bearing bar size Approximate weight Section modulus* Moment of inertia*
        (in) (psf) (in3) (in4)
Material
Allowable Stress  psi
Bearing bar spacing
 /16in
Cross rod/bar spacing
 in.
Grating surface
Clear Span  in.
Vehicular load
Click on the tab "Load Definition" at the top
of the page for vehicular load descriptions.
 (tab above)
Allowable deflection under vehicle load
Per NAAMM MBG 532--The lesser of L/400 and 1/8in.
 in.
Uniform load, U  psf
* Per foot of grating width.
Concentrated load*, C  lbf
** All grating options shown on this list meet NAAMM MBG 532 strength and deflection requirements. Horizontal support must be properly designed for especially when span exceeds 8ft. 
Allowable deflection D due to U and C  in.
         
Contact AMICO    
800-366-2642
E-mail
Web
  © 2013 Alabama Metal Industries Corp. All rights reserved.  
 
 
                   
NAAMM MBG 532 Standard Vehicular Loads  
Load types H-25 truck H-20 truck H-15 truck Passenger vehicle 5-ton forklift 3-ton forklift 1-ton forklift  
Vehicle weight (lbs)       6,322 14,400 9,800 4,200  
Load capacity (lbs)       3,578 10,000 6,000 2,000  
% of load on drive axle       60% 85% 85% 85%  
Axle load (lbs) 40,000 32,000 24,000 5,940 20,740 13,430 5,270  
Tire load 20,000 16,000 12,000 2,970 10,370 6,715 2,635  
Tire load plus 30% impact factor (lbs) 26,000 20,800 15,600 3,861 13,481 8,730 3,426  
Length of tire load distribution bearing bar direction 25 20 15 9 11 7 4  
Cross-rod/bar direction 25* 20* 15* 9* 11* 7* 4*  
  * plus 2 times the center-to-center spacing of bearing bars.  
 
The allowable deflection under the vehicular loads shown above is the lesser of L/400 and 1/8in.  
For other load cases, please contact AMICO for assistance.  
Uniform load, U   Concentrated load, C            
 
 
  Contact AMICO  
  800-366-2642  
  E-mail  
  Web  
 
  © 2013 Alabama Metal Industries Corp. All rights reserved.