Before revision: X-bracing is a structural engineering innovation developed by Fazlur Khan.Ali Mir (2001), Art of the Skyscraper: the Genius of Fazlur Khan, Rizzoli International Publications, ISBN 0-8478-2370-9 This concept reduces the lateral load on the building by transferring the load into the exterior columns.
After revision: X-bracing is a structural engineering practice where the lateral load on a building is reducedThe John Hancock Tower has visibleon its exteriorX-bracing by transferring the load into the exterior columns.