Abstract
A load test of a prestressed concrete, one‐half scale model, flat plate with unbonded tendons is reported. The four panel model was 20 ft (6.1 m) square, 2.75 in. (70 mm) thick, with 8 in. (200 mm) or 7 in. (175 mm) square columns spaced at 10 ft (3 m) centers. A uniform tendon arrangement was used in one slab direction and a banded arrangement was employed in the other direction. Bonded reinforcement was provided in accordance with ACI Code (318‐77) provisions. In addition, deformed bars were used as slab stirrups at several column connections. Bonded reinforcement effectively controlled cracking. The measured tendon stress at ultimate was 10–16% lower than the ultimate stress predicted by the ACI Code (318‐77) equation. Yield‐line analysis results showed good agreement with measured strength. The banded tendon layout successfully supported a load greater than the design ultimate load. Although slab stirrups were ineffective, the shear strength of each slab‐column connection tested exceeded the ultimate strength predicted by the ACI Code. Use of the ACI Code equivalent frame method of analysis was supported for design.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
