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Problems: Note: the Find, Given, Solution format is not required for this assignment.
1A) If the two key design criteria for a building are to minimize floor thickness and minimize
shear walls or diagonal bracing, what structural system choices are available?
(structural systems)
1B) For the structural framing and dimensions shown, construct a scale model to be no larger
than 15 inches in any of the major axes directions. The joists that span from girder G1 to beam
B2 and from beam B2 to girder G2 are at 18 inches on center (resulting in 12 spaces). All
girders, beams and joists tops are to be at the same elevation (at 12 ft.) There is decking that
runs between girders G3 and G4. All plan dimensions are from the center of the beam or
column width. Use realistic beam widths and depths for your scale. These can be from
relative proportions that you feel look right or from the span-depth charts provided, but the
depths for the members must be provided with respect to the scale chosen.
(structural systems)
1C) A steel parallel-chord truss (open web) is to span 80 ft. With proportions near the
shallower end of the range indicated in the Common Span Length and Depth charts, its depth
would be what? With proportions near the deeper end of the range indicated, its depth would
be what? (structural planning)
1D) For a steel bow truss of relatively deep proportions spanning 60 ft, what would the depth
at the center of the truss be? (structural planning)
1E) A solid-sawn wood joist is spanning 16 ft. With proportions near the shallower end of
the range indicated in the Common Span Length and Depth charts, its depth would be what in
inches? With proportions near the deeper end of the range indicated, its depth would be what
in inches? (structural planning)
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(9%)
(30%)
(6%)
(3%)
(6%)
C2
G4
B1
C1
C3
C4
C2
G1
18 ft
C1
C4
C3
G3
14 ft
8.5 ft
opening
6 ft
B1
G3
G1
B2
G2
G4
12 ft
decking
decking
joists
G2
B2
