Architectural · A-FYP3B

Metallic Penetration Firestop at Concrete Wall

Materials

Elements

Walls Insulation Millwork / Casework Roof / Floor Openings

About this detail

A metallic penetrant passes through a minimum four-and-one-half-inch normal weight or lightweight concrete or block wall capable of a two-hour fire rating, leaving an annular space ranging from zero to two-and-one-half inches. Four pound-per-cubic-foot mineral wool is compressed into the annular space to a minimum two-inch depth from both wall surfaces, leaving room for sealant. Fire sealant is applied into the annular space to a minimum half-inch depth with a quarter-inch crown on both sides, including a three-eighths-inch bead at any point of contact with the penetrant. Permissible penetrants include up to ten-inch steel pipe, six-inch conduit, or four-inch electrical metallic tubing, all achieving a two-hour fire rating with a half-inch sealant depth. An optional steel sleeve up to fourteen inches in diameter may be cast or grouted into the wall.

Members view this detail in full resolution, download the CAD files (SVG, PDF), and can adapt it in the built-in CAD editor — export DXF, DWG, or PDF.

Start membership

Similar details