History

Rangaswamy, Hatfield, & Associates was formed in 1974 by Sam Rangaswamy and Calvin Hatfield in Louisville, Kentucky.  In November 1982, after the death of Mr. Hatfield, the firm changed its name to Rangaswamy, Yost, & Associates with Michael Yost joining as a partner.  The firm was incorporated in 1983.  The firm was reorganized and changed to Rangaswamy & Associates, Inc. (RAI) in 1987.  An overseas office was established in 2001 in Chennai, India.  In 2010 the overseas office was relocated to Coimbatore, India.


After 46 years of dedicated service, in 2016, Sam Rangaswamy decided it was time to pass the torch.  Anthony Ehlers, an employee of over 14 years along with his wife, Celia Ehlers, purchased the firm in August of 2016.  In June of 2017 RAI was certified as a Woman Business Enterprise (WBE) by the Louisville and Jefferson County Metro Human Relations Commission.


Currently the firm has one registered professional engineer, seven junior engineers, and one structural designer. RAI has been recognized with numerous awards including two NCSEA Excellence in Structural Engineering Awards, two CRSI Design Awards, and an ACEC Excellence in Engineering Award.



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Head Office

The Old Portland Building,
539 West Market Street, Suite 200
Louisville, Kentucky 40202, USA
Contact Number : (502) 589-2212
Fax : (502) 589-2240
E-Mail : celia@rangaswamy.com

Overseas Office (India)

Site No.25/26, Thangam House
Phase 3, 5th Cross Street
Rajivgandhi Nagar, Sowripalayam
Coimbatore - 641 028.
Contact Number : (0422) - 4382212, 4382213
E-Mail : apsanandh@rangaswamy.com