St. Louis, Mo. — Wiegmann Associates has begun work on the $8 million renovation at the St. Louis VA Medical Center-Jefferson Barracks to replace outdated heating and cooling systems. Wiegmann Associates is the mechanical contractor and Trine/Poettker joint venture is the general contractor. The plan/spec project involves removing the 50-year-old HVAC systems from Buildings 1, 51 and 52 and Read more