After a 6-month competition, the national commission in charge of building a new World War I memorial in Washington has picked a design. The new memorial will take the form of a partial transformation of Pershing Park in downtown Washington, D.C. That site is already a tribute to Gen. Joseph Pershing, the commander of American forces in Europe. In the new memorial, his statue will be joined by walls inscribed with quotes from key World War I figures and sculptures of rank and file soldiers for a total of 116,500 cubic feet of new architecture — one for every American who died in the war. Joe Weishaar is the young architect who won the competition. His design is called “the weight of sacrifice”. He talked with Federal Drive with Tom Temin about how the design came together, and what visitors will see when construction is finished.