Architectural · A-N8B38

Third Level Window Sill and Exterior Wall Section

Materials

Masonry / CMU Brick Glass / Glazing Metal (misc.)Gypsum / Drywall

Elements

Columns Walls Windows Floors / Slabs Waterproofing / Flashing Insulation Drainage Anchors / Embeds

Connections

Embed Plate

About this detail

This wall section details the third level window sill and exterior wall assembly meeting at Floor 3 (+28'-0" AFF) and raised access floor level (+29'-4" AFF). The exterior wall construction includes running bond thin brick field over a three-quarter inch mortar bed and lath, backed by a two-ply weather-resistive barrier, moisture-resistant gypsum board, and a slotted deflection track packed completely with mineral wool. A sheet metal sill pan is fully embedded in sealant at the window base, complemented by a mechanically attached sheet sill apron of six-inch plus twelve-inch length, a backer rod and sealant with weep holes at six inches on center, and a painted sheet metal flashing and counterflashing system. Interior finishes feature a raised floor system over a gypsum cement underlayment fill gap, with coordinated back dam height and cove sealant joints.

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