During renovations of an office building, an existing W360x122 beam supporting a floor will be loaded beyond its capacity. An engineer wants to strengthen the beam by adding 12 mm flange plates at the top and bottom of the beam. After analysing the beam, the engineer determines that the strengthened beam requires a moment of inertia ≥ 460x106 mm4. Calculate the required width ‘W’ of the flange plates to provide the necessary moment of inertia. The plate width is available only in 10 mm increments.
During renovations of an office building, an existing W360x122 beam supporting a floor will be loaded beyond its capacity. An engineer wants to strengthen the beam by adding 12 mm flange plates at the top and bottom of the beam. After analysing the beam, the engineer determines that the strengthened beam requires a moment of inertia ≥ 460x106 mm4. Calculate the required width ‘W’ of the flange plates to provide the necessary moment of inertia. The plate width is available only in 10 mm increments.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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During renovations of an office building, an existing W360x122 beam supporting a floor will be loaded beyond its capacity. An engineer wants to strengthen the beam by adding 12 mm flange plates at the top and bottom of the beam. After analysing the beam, the engineer determines that the
strengthened beam requires a moment of inertia ≥ 460x106 mm4. Calculate the required width ‘W’ of the flange plates to provide the necessary moment of inertia. The plate width is available only in 10 mm increments.
Transcribed Image Text:4. During renovations of an office building, an existing W360x122 beam supporting a floor will be
loaded beyond its capacity. An engineer wants to strengthen the beam by adding 12 mm flange plates
at the top and bottom of the beam. After analysing the beam, the engineer determines that the
strengthened beam requires a moment of inertia > 460x10° mm“. Calculate the required width 'W' of
the flange plates to provide the necessary moment of inertia. The plate width is available only in 10
mm increments.
W-
-12
W360x122
363
ALL DIMENSIONS
AREA: 15500 mm^2
IN MILLIMETERS
Ixx: 365x10^6 mm^4
lyy: 61.5x10^6 mm^4
-12
-257 *
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