Appendix 11. Windows.  


Latest version.
  • (a)

    This component has many elements that define its appearance. It includes, but is not be limited to, frame type, directional orientation (whether it is more vertical or horizontal or otherwise), glass type, spacing and trim. The complexity of this component together with the possibility that the supporting buildings may have dissimilar fenestration necessitates considering a number of schemes to create continuity.

    (b)

    In order to allow pedestrians and drivers to see into the skyways, a minimum transparency is required, 25 percent minimum transparency is required for skybuildings (Figure B-3). In order to ensure "see through" windows or transparent sections, these transparent windows or sections shall be made of material that has a minimum of 52 percent visual light transmittance with a six percent maximum visual light reflectance. Pedestrian skywalks and skytrams shall maintain at least 70 percent (for all skytrams and for skywalks greater than 20 feet in width) or 50 percent (for skywalks less than or equal to 20 feet in width) transparent windows or sections depending on the width of the skywalk or skytram. In any case, the transparent windows or sections shall maintain the same minimum 52 percent visual light transmittance and maximum six percent visual light reflectance as skybuildings. Transparency for skytrams takes into consideration the overall height of structure with the skytram in place. If it is not an enclosed structure, credit will be given for the open portion of the overall height.

    (c)

    If there is extreme diversity in the two buildings' windows, a fenestration system for the skyway may be a composite of both buildings' window types. Skyway fenestration may be a simplified interpretation, suggesting rather than replicating the supporting buildings fenestration.