For the steel frame in Figure Pl0.41, compute the horizontal displacement of joint B.For m...

For the steel frame in Figure Pl0.41, compute the horizontal displacement of joint B.For member BCD, B=6,000 mm2and I=600 ×106mm4. For member AB, A=3,000 mm2. E=200 GPa for all members.

Effective Moment of Inertia of a Reinforced Concrete Beam

NOTE: This note applies to Problems P10.42 to P10.44. Because reinforced concrete beams crack due to tensile stresses created by moment and shear, initialelastic deflections are based on an empirical equation for moment of inertiaestablished from experimental studies of full-size beams (Section 9.5.2.3 ofACI Code). This equation produces an effective moment of inertia Iethat varies from about 0.35 to 0.5 of the moment of inertia IG based on the gross area of the cross section. The additional deflection due to creep and shrinkage that occurs over time, which can exceed the initial deflection, is not considered.