Dirty White Boy! - a photo on Flickriver

Dirty White Boy!

            The National Park Service began a 15-month project to restore the roofs, repair the stone, and clean the marble at the Thomas Jefferson Memorial. The memorial will remain open for the duration of the project, although some areas will be inaccessible.

The roof restoration and repair will consist of replacing the two flat upper and lower roofs that circle the dome to keep the building watertight and dry. Additionally, the large marble “tiles” covering the portico, the dramatic front entry that projects towards the Tidal Basin, will be lifted to replace the deteriorated water-proofing below. Stone will also be repaired under the portico and along the colonnade ceilings. Improvements to roof drains, downspouts, and gutters will also be completed.

Cleaning the visible marble on the dome and roof of the memorial will utilize specialized lasers to remove the black biofilm (a microbial colony of algae, fungi and bacteria) seen growing on upper portions of the memorial. The biofilm was first noticed in discrete areas of the white marble in 2006 and has become more pronounced in recent years. The National Park Service studied this growth since 2014 to determine the best treatment options.

Access to the front of the memorial, including the steps, accessible route, chamber with the statue of Thomas Jefferson, exhibit area, restrooms and elevator will remain open to the public during the construction. The east side of the memorial will be closed for construction staging.
 
The contract for this work was awarded on September 19, 2018, to Grunley Construction for $8.750 million. The Thomas Jefferson Memorial roof replacement, stone repair and biofilm removal project expected to be complete by May 2020.

Via NPS

Taken in: United States / District of Columbia / Washington / Monumental Core (show map)

Taken on: April 28, 2019

Tags:

Tidal Basin

Washington

District of Columbia

Dawn

Reflection

Colorful Sky

Panorama

Nikon

Nikon D850

D. Scott McLeod

Scott McLeod

DC Photographer « less

Sets appears in: • Jefferson Memorial

Groups appears in: • Washington, DC Metro Area Sights • Nikon D800-D850 and Nikon Z7-Z9 Users Group

Camera: Nikon D850, f/5.6, 1.6 sec, 135mm, ISO 64 (more info) (hide info)

Camera:	Nikon D850
Lens:	70.0-200.0 mm f/4.0
Aperture:	f/5.6
Exposure Time:	1.6
Focal Length:	135mm
ISO:	64
Exposure Bias:	+2 EV
Flash:	No Flash
Exposure Program:	Manual
Exposure Mode:	Manual
Metering Mode:	Center-weighted average
White Balance:	Auto
Sharpness:	Hard
Color Space:	Uncalibrated
Software:	Adobe Photoshop CS6 (Macintosh)
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