Long-time Seattle-based structural engineer Dan Munn, SE, PE, LEED AP, joined TK1SC as principal and office lead to establish a Seattle office. Notable for his pioneering work with sustainable design and photovoltaics, Dan is now part of a 225-person full-service engineering firm headquartered in Irvine, CA. TK1SC designs mechanical, electrical, plumbing, structural, technology, low voltage, and security systems for buildings.