Events > Tilt-Up Convention and Expo 2018 - Dallas > Featured Speaker

James “Leroy” Caldwell, P.E. Education: Master of Engineering in Civil Engineering – Structures and Applied Mechanics - 2007 Bachelor of Science in Mechanical Engineering from UTA – 1980 Leroy started with Richmond Screw Anchor Engineering department in 1981 and was with Richmond until Dayton Superior bought Richmond in 1998 and continued working for Dayton Superior in the engineering department until 2009. From 2009 to Present Leroy works for CMC Construction Services Leroy started working with Tilt-up engineering at Richmond and upgraded and improved their tilt-up program. In 1987 he attended a Tilt-up Workshop in Dayton Ohio and met with Professor Elmer Payne who published the first computer cable analysis routines for tilt-up panels. From computer code provided by Professor Payne Leroy wrote a new computer program to run on the IBM PC using Turbo Basic. This program evolved as newer more powerful programming languages became available and was still the computer program used by Dayton as till 2012. Since coming to work for CMC in 2009 he has worked to eliminate or minimize strongbacks on tilt-up panels by utilizing reinforced concrete design principals. CMC successfully edge lifted a panel 46’-11 ¾” tall without strongbacks utilizing these techniques Leroy ghost wrote a paper on tilt-up engineering and later wrote the first Tilt-up Bracing Guide for TCA. He designed the Gyro Lift lifting hardware manufactured by Richmond and later Dayton Superior. He also designed the Dayton T-43-L lifters and the T110 lifting insert. Leroy is a registered P.E. in 12 States: Texas, Arkansas, Arizona, Colorado, Florida, Georgia, Louisiana, Mississippi, Oklahoma, South Carolina, and Utah.