ARLINGTON HOUSE Historic Structures Report Supplementary Material

Following the computation of load rating of the first floor framing system by Mr. Dean Robinson of Arthur Beard Engineers, Inc., in March 1979, it was recommended that additional temporary supports be added to those already in the basement in order to insure the preservation of the historic resource as well as the safety of visitors. A beam and five posts were placed in the Winter Kitchen [Room BO-2] beneath the wall between the Custis Bedroom [Room 106] and the Hallway [Room 105] of the North Wing. A beam and two posts were wedged beneath the header facing the segmental arch beneath the Morning Room [Room 115]. Four steel angles had been added during this century to strengthen the connection of the floor joists to the header in question, but the connection was not thought to be completely positive. A beam and posts were added to strengthen the lintel symmetrically opposite the one under the northern arch of the Centerhall and one post was put under each remaining lintel of the bearing wall openings to the south side of the chamber under the Centerhall.

Harry Lee Arnest, "Arlington House, Historic Structures Report, Architectural Data, (Phase I)," National Park Service, National Capital Team, Denver Service Center, September 1979, pp. 37.