JF Ahern is a mechanical and fire protection contractor that's lasted 140 years in Fond Du Lac, Wis. The company was named ENR Midwest Specialty Contractor of they Year, in part, because it worked on projects in 10 of ENR Midwest’s 11 states last year.
JF Ahern, a mechanical, electrical, plumbing and fire protection engineer with a strong array of prefabrication capabilities, is ENR Midwest Specialty Contractor of the Year.
There is good news for boosters of a modular system of tied dual-plate walls field-filled with concrete—dubbed SpeedCore for its potential to slash superstructure construction time compared to steel frames with reinforced concrete cores.
Project sites set ablaze in Minneapolis, D.C. and Ohio, as construction is shut down in downtown Chicago and in California; NYC sets first curfew in decades amid looting, even of boarded-up stores.