Mark D. Webster is a structural engineer at Simpson Gumpertz and Heger’s Waltham office. He is a founder of the Structural Engineering Institute’s Sustainability Committee and recently completed a term as co-chair of the committee. He leads the SE 2050 Commitment Resources Working Group and contributes to the SEI Sustainability Committee’s Circular Economy Working Group. He edited and co-authored the Sustainability Committee’s technical report addressing the climate impacts of structural materials, Structural Materials and Global Climate, and the committee’s white paper entitled Achieving Net Zero Embodied Carbon in Structural Materials by 2050. His structural consulting practice encompasses new design, renovation, and investigation work, with an emphasis on historic buildings.