9000 psi Concrete — Why? Why not—

by William F.H. Schmidt, (M.ASCE), Owner; William Schmidt & Assocs., Chicago, Ill.,
Edward S. Hoffman, (M.ASCE), Chief Structural Engr.; The Engineers Collaborative, Ltd., Chicago, Ill.,


Serial Information: Civil Engineering—ASCE, 1975, Vol. 45, Issue 5, Pg. 52-55


Document Type: Feature article

Errata: (See full record)

Abstract: High strength concrete is being used in many high-rise apartment and office buildings. In this case, high strength means 9000 psi (62.0 MPa). Quality control, aggregate availability and specification restrictions are the factors that seem to have held back the general use of stronger concretes. In some areas these factors have been eliminated and the resulting savings are well worth considering. Reinforced concrete continues to replace structural steel in taller and taller structures. The limit of reinforced concrete capacity has not been reached, but it is up to the structural engineer to explore the potentials of high strength concrete in his own region.

Subject Headings: Residential buildings | Commercial buildings | High-rise buildings | High-strength concrete | Reinforced concrete | Specifications

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