Assertion: concrete's strength | /r/HasProperty | up to 12,000 psi
Facets:
Source sentences:
text: At 969 ft (295 m), Chicago's 311 South Wacker Drive uses concrete with compressive strengths up to 12,000 psi (83 MPa) and is the tallest concrete building in the United States.
text: At 969 feet, Chicago's 311 South Wacker Drive uses concrete with compressive strengths up to 12,000 psi and is one of the tallest concrete buildings in the United States.