Those participating in the Fenestration and Glazing Industry Alliance (FGIA) Annual Conference in Orlando, FL, learned about the building, energy and stretch codes in the state of Massachusetts in a presentation about the complexity of backstop calculations from presenter Christopher Grey (Simpson Gumpertz & Heger). In this presentation, Grey provided an overview of the 2023 Massachusetts Stretch Code updates that impact façade design including requirements for air leakage, thermal bridging and the envelope backstop calculations. He reviewed the 2020 and 2023 backstop calculations and discuss...