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Jonathan Ochshorn Room 121-B, Rand Hall Department of Architecture Cornell University |
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Questions for Week 11 Briefly answer each question (1-3 sentences should do in most cases). Please type (or print neatly) and submit at the end of class, 3/31/03. Note that readings are available through the Cornell Library Course Reserve at http://catalog.library.cornell.edu/. Instructions for accessing readings online are located at http://instruct1.cit.cornell.edu/courses/arch463/arch366sp03/read/online.html. Select readings 11a and 11b. Due: March 31, 2003 11a. Götz Gutdeutsch, Building in Wood: Construction and Details 1. Iron is "isotropic" whereas wood is directional. In what two ways does the directionality of wood affect its structure or construction? 11b. Christian Müller, "The Forerunners of Glued Laminated Timber," Laminated Timber Construction 1. Müller claims that when two pieces of timber are combined "in a shear-resistant connection" (i.e., laminated one on top of the other so that no relative sliding can occur between the two members), then "this results in a four-fold increase in the loadbearing capacity, compared to the individual cross-sections." If the bending strength of a cross section is proportional to its section modulus of bd2/6 [where b is the width and d is the depth of the cross-section], show mathematically why this assertion is true.
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