The box beam in the figure is reinforced with #4 U-stirrups in each web. f c′ = 3.5 ksi, andfy = 60 ksi.(a) What is the design shear capacity of the cross section?Hint: Find concrete and stirrup strengths separately, and then find the total capacity.(b) If the total applied factored shear force at the section is 220 kip, please comment onthe adequacy of this shear design.Hint: Compare the total capacity from (b) with the shear force.2. In the figure, all loads are factored, and the uniform load includes self-weight. Use #3stirrups. fc′ = 4 ksi, and fy = 75 ksi.(a) What stirrup spacing is required at section A?(b) How will this spacing change at section B?(c) Indicate the region of the beam where stirrups are not required.
The box beam in the figure is reinforced with #4 U-stirrups in each web. f c′ = 3.5 ksi, andfy = 60 ksi.(a) What is the design shear capacity of the cross section?Hint: Find concrete and stirrup strengths separately, and then find the total capacity.(b) If the total applied factored shear force at the section is 220 kip, please comment onthe adequacy of this shear design.Hint: Compare the total capacity from (b) with the shear force.2. In the figure, all loads are factored, and the uniform load includes self-weight. Use #3stirrups. fc′ = 4 ksi, and fy = 75 ksi.(a) What stirrup spacing is required at section A?(b) How will this spacing change at section B?(c) Indicate the region of the beam where stirrups are not required.
Steel Design (Activate Learning with these NEW titles from Engineering!)
6th Edition
ISBN:9781337094740
Author:Segui, William T.
Publisher:Segui, William T.
Chapter9: Composite Construction
Section: Chapter Questions
Problem 9.1.3P
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Question
The box beam in the figure is reinforced with #4 U-stirrups in each web. f c′ = 3.5 ksi, and
fy = 60 ksi.
(a) What is the design shear capacity of the cross section?
Hint: Find concrete and stirrup strengths separately, and then find the total capacity.
(b) If the total applied factored shear force at the section is 220 kip, please comment on
the adequacy of this shear design.
Hint: Compare the total capacity from (b) with the shear force.
2. In the figure, all loads are factored, and the uniform load includes self-weight. Use #3
stirrups. fc′ = 4 ksi, and fy = 75 ksi.
(a) What stirrup spacing is required at section A?
(b) How will this spacing change at section B?
(c) Indicate the region of the beam where stirrups are not required.
fy = 60 ksi.
(a) What is the design shear capacity of the cross section?
Hint: Find concrete and stirrup strengths separately, and then find the total capacity.
(b) If the total applied factored shear force at the section is 220 kip, please comment on
the adequacy of this shear design.
Hint: Compare the total capacity from (b) with the shear force.
2. In the figure, all loads are factored, and the uniform load includes self-weight. Use #3
stirrups. fc′ = 4 ksi, and fy = 75 ksi.
(a) What stirrup spacing is required at section A?
(b) How will this spacing change at section B?
(c) Indicate the region of the beam where stirrups are not required.
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