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1. Find
the reduced live load on the column, girder, and beam shown in Figure 1.
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Dimension "A"
(feet)
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Dimension
"B" (feet)
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Number of
floors of live load over column
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Unreduced
live load (psf)
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Solutions to problem 1:
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Reduced live load on column
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Reduced live
load on girder
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Reduced live
load on beam
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2. Find
the governing load and governing Cd for the column shown in Figure 1, using
the parameters selected above (except use the loads selected below).
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Typical reduced live loads
(floors only, psf)
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Typical dead
loads, including roof (psf)
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Typical
construction live load on roof
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Typical snow
load on roof
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Solutions to problem 2:
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Governing load
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Governing Cd
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3.
Select the lightest cross-section for a "posts and timbers" column
with load combination, wet service condition, wood species, grade, load, and
assumed Cp as indicated below:
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Select species and grade
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What load
combination governs?
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Wet service
conditions?
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Column load
(lbs)
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Assumed
stability factor, Cp
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Solutions to problem 3:
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Adjusted allowable
compressive stress
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Required area
(in2)
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Lightest
acceptable section
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4.
Select the lightest cross-section for a simply-supported wood beam (used
indoors with live and dead load only) with species, spacing, span, and
distributed load as indicated below:
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Select species and grade
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Span (feet)
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Distributed
live load (psf)
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Distributed
dead load (psf)
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Size
classification
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Solutions to problem 4:
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Reaction
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Maximum
moment
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Reduced shear
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Section
selected for bending
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Check for
shear: required area
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Actual area
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Conclusion:
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Actual total
load deflection
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Conclusion
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Actual live
load deflection
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Conclusion
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