The control and management of rainwater on and within a curtain wall assembly is critical for long-term performance and durability. Water-control strategies—most commonly drainage or barrier (exclusion)—can vary by system type and glazing technique.
By comparing exterior noise levels with interior requirements, and considering background noise levels, a project’s required level of window or curtain wall acoustic performance can be inferred either in specific frequency bands or by using one of the single-number rating systems described in this article.
With glazed façades dominating urban landscapes, the strides made to improve the energy efficiency of glass are well-documented and generally well-understood. However, the framing members of wall and window systems have also been re-engineered.