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15) Which type of beam system is most suitable for a long, narrow building? a. two-way beam system b. purlins c. triple beam system d. one-way beam system 16) What does '87' represent in the steel profile W12 x 87? a. pounds per square foot b. bearing capacity per linear foot c. depth of web d. pounds per foot in length 17) Which of the following is a heavy timber member? a. 2x8 b. 6x6 c. 4x6 d. 2x4 18) Steel, wood, and concrete are all suitable materials for pile foundation systems. True C False 19) Both sheathing and steel decking typically are installed to the span of structural members. a. perpendicular b. parallel c. either parallel or perpendicular d. always at 45-degrees 20) The use of corrosion resistant allowed Fero Saarinen to expose the exterior steel on the John Deere Headquarters Building. a. welded connections b. standard steel shapes c. intumescent coatings d. Cor-ten steel 21) Which architect radicalized the stick frame as part of a Southern California genealogy? a. Frank Lloyd Wright b. Frank Gehry c. Konrad Wachsmann d. all of the above