Minimum-Depth Design of Double-Tapered Pitched Glued-Laminated Beams

摘要

A computer program is presented for the minimum-depth design of double-tapered pitched glued-laminated beams of conventional shape and without reinforcing. Various design criteria are described and their influence is illustrated. The choice of a maximum radius of curvature for the beam soffit partially compensates for the increase in wood volume required by a recent analysis for maximum radial and longitudinal stresses that is more exact and more conservative tha older estimates. This recent analysis often controls the size of the apex and tangent-point cross sections. (Author)