Accession Number : AD0429490


Title :   PRESTRESSED LAMINATED WOOD BEAMS,


Corporate Author : FOREST PRODUCTS LAB MADISON WIS


Personal Author(s) : Bohannon,Billy


Report Date : Jan 1964


Pagination or Media Count : 32


Abstract : This paper presents a comparative evaluation of the flexural strength of 25 pairs of prestressed and matching unprestressed control beams, an evaluation of beams with clear straight-grained tension laminations, and a method of matching pairs of beams of structural size. Results show that an immediate 31% increase in strength and approximately 50% decrease in variability of strength can be obtained by prestressing, that a clear outer tension lamination probably has more influence upon flexural strength than is recognized by present design methods, and that structural size beams can be successfully matched. (Author)


Descriptors :   WOOD , LAMINATES , STEEL , MECHANICAL CABLES


Distribution Statement : APPROVED FOR PUBLIC RELEASE