Breadcrumb

  1. Home
  2. Renovation (Architecture)

Renovation (Architecture)

View at the northwest corner of White House during renovation

View at the northwest corner, outside and below the north window of Room G-17, during the renovation of the White House. The installation is to test the strength of the foundation. The horizontal iron beams are supported by six vertical columns, below which is a two foot concrete foundation. Iron struts were erected to the wall at each side. A shift downward of 1/16" to 1/4" was recorded when four hydraulic jacks, each with a pressure of 50 tons, were applied to test the foundation.