1 AIT Asian Institute of Technology

Glue-laminated timber beams of Teng and Yang

AuthorSukhum Sukapanpotharam
Call NumberAIT Thesis no. 133
Subject(s)Wooden beams--Testing
Strength of materials
NoteA thesis submitted in partial fulfillment if the requirements for the degree of Master of Engineering in the SEATO Graduate School of Engineering, Bangkok, Thailand.
PublisherAsian Institute of Technology
AbstractThe purpose of this research was to study the flexural behavior of two-specie timber laminated beams of Teng (Shorea Obtusa) and Yang (Dipterocarpus Intricatus) glued with resorcinol glue. Tests were conducted on fourteen full size simply supported beams subjected to static third-point loading. Four solid Teng beams and three solid Yang beams of structural size were also tested in order to compare the results with the glue-laminated beams. Small specimens were cut from the unfractured parts of the major beams and tested to determine the mechanical properties. It is concluded that glue-laminated beams of two-specie timber of Teng and Yang glued with resorcinol glue could be used effectively for structural purposes. A gluing pressure of 250 psi is suggested for fabricating the two species of timber. It is recommended that the ratio of Teng to Yang timber should not be greater than 1.0. Study of knots and slope of grain at the outer tension lamination indicated that these natural characteristics greatly affect the ultimate strength of the beam.
Year1966
TypeThesis
SchoolStudent Research Before 1979
DepartmentOther Field of Studies (No Department)
Academic Program/FoSThesis (Year <=1979)
Chairperson(s)Dr. William J. Venuti;
Examination Committee(s)Dr. Neil Jackson;Dr. Ladislav B. Kriz;Dean Milton E. Bender, Jr.
DegreeThesis (M.Eng.) - SEATO Graduate School of Engineering


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