Accession Number : AD0777821

Title :   Time-Dependent Characteristics of Prestressed Wood Beams.

Descriptive Note : Forest Service research paper,

Corporate Author : FOREST PRODUCTS LAB MADISON WIS

Personal Author(s) : Bohannan,Billy

Report Date : 1974

Pagination or Media Count : 11

Abstract : To evaluate the change in prestressing force due to time-strain characteristics of the wood, matched pairs of prestressed beams and nonprestressed control beams were loaded for eight years. Beams were loaded to net stress levels of 1,600 and 2,500 p.s.i. (pounds per square inch). The time-deflection performance of the matched pairs was consistently similar and there was no significant loss in the prestressing force. These data indicate that prestressed beams should give adequate performance in structures. (Author)

Descriptors :   *Beams(Structural), Wood, Prestressing, Time dependence, Deflection, Loads(Forces)

Subject Categories : Wood, Paper and Related Forestry Products
      Structural Engineering and Building Technology

Distribution Statement : APPROVED FOR PUBLIC RELEASE