An axially loaded rectangular tied column is to be designed for the following service loads: DL = 1600 kN Required Strength, U =1.2 D + 1.6 L LL = 845 kN Capacity Reduction Factor, Ø = 0.65 %3D Effective cover to centroid of steel reinforcement = 70 mm Diameter of main bars, db = 22 mm Diameter of lateral ties, dt = 10 mm Concrete, fc' = 27.5 MPa Steel, fy = 415 MPa %3D Using 3% vertical steel ratio, what is the required column width (mm) if the architectural conditions limit the width of the column in one direction to 350 mm? 400 O450 500 550
An axially loaded rectangular tied column is to be designed for the following service loads: DL = 1600 kN Required Strength, U =1.2 D + 1.6 L LL = 845 kN Capacity Reduction Factor, Ø = 0.65 %3D Effective cover to centroid of steel reinforcement = 70 mm Diameter of main bars, db = 22 mm Diameter of lateral ties, dt = 10 mm Concrete, fc' = 27.5 MPa Steel, fy = 415 MPa %3D Using 3% vertical steel ratio, what is the required column width (mm) if the architectural conditions limit the width of the column in one direction to 350 mm? 400 O450 500 550
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
Q1
Transcribed Image Text:(continuation)
Given: Column Section = 400mm x 500mm. Vertical reinforcement consists of 16 bars. Which
of the following gives the diameter of vertical bars (mm) if the required minimum steel ratio is
3%?
16
18
22
O 25
(continuation)
Given: Column Section = 400mm x 500mm Determine the maximum spacing of lateral ties as
prescribed by the code, in mm.
352
O 400
480
500
Transcribed Image Text:SITUATION.
An axially loaded rectangular tied column is to be designed for the following service loads:
DL = 1600 kN
Required Strength, U =1.2 D + 1.6 L
LL = 845 kN
Capacity Reduction Factor, Ø = 0.65
%3D
Effective cover to centroid of steel reinforcement = 70 mm
Diameter of main bars, db = 22 mm
Diameter of lateral ties, dt = 10 mm
Concrete, fc' = 27.5 MPa
%3D
Steel, fy = 415 MPa
%3D
Using 3% vertical steel ratio, what is the required column width (mm) if the architectural
conditions limit the width of the column in one direction to 350 mm?
400
450
500
550
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