The National Capital Planning Commission on Thursday is scheduled to take up the final building foundation plans for the National Museum of African American History and Culture, which officially broke ground this winter.

The plans detail the construction of the museum’s foundations including steel bearing piles, supporting columns, and a mat slab foundation system. They were submitted to NCPC by the Smithsonian Institution.

The $500 million museum is on a five-acre site adjacent to the Washington Monument, bounded by Constitution Avenue, Madison Drive, and 14th and 15th streets NW. Its lead designer is Ghanaian-born architect David Adjaye, who has offices in Berlin, London and New York. Congress is covering half the construction cost, and it is scheduled to open in 2015.