The fields with the red border are required.

AMICO Bar Grating Selection Tool
STAIR TREADS
The grating tread options shown below meet ANSI/NAAMM MBG 531 strength and deflection requirements. For non-standard treads, please contact AMICO for assistance.
Input   Stair Tread Options           How to Request a Quote and Specify Stair Treads
Enter design parameters in the yellow fields below.   Stair tread style Bearing bar Actual tread width End plate dim.          
Grating type
height thickness spacing A B C
(After stair tread options are shown)
Material
(in) (in) c-c (in) (in) (in) (in) (in)
Bearing bar thickness
in
Step 1: Choose desired surface finish
Grating surface
       
Tread span    in
Step 2: Select nosing
Min. req'd tread width in
Step 3: Email us the Specs below for a quote.
Allowable stress    psi
Allowable deflection
L/240 per MBG 531
   in
Contact AMICO
800-366-2642
E-mail
Web           Step 4: (For specifiers and engieers)
Consider using our specification tools . . 
HERE
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