Improved Utilization of Lumber in Glued Laminated Beams.

Abstract

Evaluation of 120 glued laminated (glulam) beams provided criteria for improved utilization of lumber in such beams. Objectives were: (1) to determine if lumber grade can be somewhat reduced on the compression side of beams without significantly changing design strength; (2) to establish analytic procedures for incorporating lumber having had its modulus of elasticity (e) determined (E-rated lumber) into glulam beams; and (3) to determine the effect on beam properties of using lumber with limited wane. The procedures developed will provide those preparing specifications a wider raw material base for glulam timber, resulting in more efficient use of our timber resource.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1977
Accession Number
ADA046078

Entities

People

  • Russell C. Moody

Organizations

  • Forest Products Laboratory

Tags

DTIC Thesaurus Topics

  • Bending Stress
  • Data Analysis
  • Dermatologic Agents
  • Design Criteria
  • Elastic Properties
  • Joints (Anatomy)
  • Laminates
  • Manufacturing
  • Materials
  • Measurement
  • Modulus Of Elasticity
  • Moisture Content
  • Shear Strength
  • Shear Stresses
  • Specific Gravity
  • Standards
  • Statistical Analysis

Readers

  • Forest Ecology
  • Pulsed Power and Plasma Physics.
  • Systems Analysis and Design