STABILIZATION OF WEAKENED CHIMNEYS
The following records describe techniques for the stabilization of broken or weakened historic chimneys (figs. 93-98).
Fort Union National Monument. Date: April 22, 1960; Building: 6-160; Room; 163; Wall (N. E. S. W): NESW.
Orientation, plan and type (situation, evidence of additional stories, period of construction relative to surrounding rooms, evidence of burning, etc.): Contemporaneous with contiguous rooms. No evidence of burning. Single story.
Floor (floor type; additional notes): No floor remains. Joist indications suggest wood floor.
Details (notes on doorways, lintels, etc.): Chimney and fire-place in east wall. North wall is south wall of rooms 161 and 162. Fireplace badly weakened by missing bricks. Loose bricks in chimney remnant. Brick hearth missing.
Room No.: 6-163; Date work started: June 29, 1959; Date work finished: Oct. 23, 1959; Man days of labor: 14-3/4; Cost of materials: $52.62; Archeologist: Rex L. Wilson; Date: April 22, 1960.
Condition on date work started. Masonry: Nearly all of east wall missing except for flue. Many adobes missing from all sides of adobe flue. North wall in good condition. Lintels missing from window in south wall. West wall in good condition.
Materials, construction, and technique in making repairs or accomplishing job: East wall: Missing foundation stones replaced in fireplace, brick hearth rebuilt with historic brick, missing fireplace brick reset in soil-cement mortar. Missing adobes were replaced in the north, east, and south sides of the flue. The small chimney remnant stabilized by resetting loose bricks in soil-cement mortar and replacing several missing bricks.
South wall: The east end of the wall was rebuilt with regular adobes in order to support the remaining original wall.
All walls: Capped. Sprayed with Dow Corning 772 diluted in water at a ratio of 1 to 9.
Last Updated: 16-Apr-2007