San Francisco : Architect and Engineer, Inc · leaf 572
interest to everyone of us, because, although itis old in theory, it is new in application. Pretensioningand Postensioning are finally making themselves feltin the construction field and wc believe both willsubstantially effect new concepts in future design. Raymond E. Davis, consulting engineer… … Test Results: Concrete in all members weighed 105lbs. per cu. ft. which at time of release had strengthof 3500 psi and at time of test, 4500 psi. Test units were prestressed with high strength7-wire strand having ultimate strength in excess of240,000 psi. Strands were initially tensioned with…
Architecture · Building
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