Dedicated to the planning, study and design of mechanical and electrical systems for the built environment. Harvard University Science
& Engineering Complex
ENGINEERING EXCELLENCE



DESIGNING THE FUTURE


Dartmouth College – Arthur L. Irving Institute For Energy & Society Merging imaginative solutions with the latest technologies. Supporting the growing global commitment to environmental stewardship. Masswildlife Field Headquarters
SUSTAINING THE PRESENT


Protecting our national heritage while adapting existing buildings to compatible new uses. Noble and Greenough School
PRESERVING THE PAST



SINCE 1930

St. Louis Arch van Zelm’s 31st Annual Charity Golf Tournament on June 6, 2025 - Register Here Save The Date for van Zelm’s 33rd annual charity golf tournament on June 4, 2027. Learn More