NebraskaCRE Darland wraps construction on elementary school expansion in Omaha May 15, 2019 Share on Facebook Share on Twitter Share on LinkedIn Share via email Darland Construction served as the construction manager for the expansion of Mandela Elementary School in North Omaha, Nebraska. The 12,000-square-foot expansion project added an early childhood education center to the school. The new school features six classrooms designed to serve students between the ages of two and five. A 1,360-square-foot gymnasium overlooks the elementary school and athletic fields. The main entry features a vestibule system for added security.