Here are the grades I mentioned on the phone.

 

Eric S. Christiansen, P.E., SECB

Senior Structural Engineer

 

	

	
HALFF ASSOCIATES, INC.

1201 North Bowser Road

Richardson, Texas 75081

Office 214-346-6284

Cell 972-955-2996

Fax 214-739-0095

www.halff.com