b) How much axial load the column can carry under ASD Design strength, b1). using AISC column formula,in kN? b2). using Gordon-Rankine column formula, in kN? b3). using Straight line formula, in kN?
b) How much axial load the column can carry under ASD Design strength, b1). using AISC column formula,in kN? b2). using Gordon-Rankine column formula, in kN? b3). using Straight line formula, in kN?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
Answer letter b.
![A steel column 10 m long is made up of two channels C 12 x 25 laced together with their
flanges facing each other as shown in Figure 4.
a) How much distance the back of the web of the channels be placed if the section
must be equally strong in both X and Y axes, in mm?
b) How much axial load the column can carry under ASD Design strength,
b1). using AISC column formula,in kN?
b2). using Gordon-Rankine column formula, in kN?
b3). using Straight line formula, in kN?
Assume one end of the column is fixed, the other end hinged. Fy = 250 MPa, E = 200,000
MPa
Lacings
Properties of one C12 x 25
A = 4742 mm²
d = 304.8 mm
lx = 59.94 x 106 mm4
[]
rx = 112.52 mm
tw = 9.83 mm
ly = 1.86 x 106 mm4
bf = 77.39 mm
ry 19.81 mm
tf = 12.73 mm
x = 17.12 mm
Figure 4](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F85f2e505-0790-44fb-bb52-debcce321bcc%2Fdf79c6c8-ccf0-4807-88be-48715b527985%2Faro1wvb_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A steel column 10 m long is made up of two channels C 12 x 25 laced together with their
flanges facing each other as shown in Figure 4.
a) How much distance the back of the web of the channels be placed if the section
must be equally strong in both X and Y axes, in mm?
b) How much axial load the column can carry under ASD Design strength,
b1). using AISC column formula,in kN?
b2). using Gordon-Rankine column formula, in kN?
b3). using Straight line formula, in kN?
Assume one end of the column is fixed, the other end hinged. Fy = 250 MPa, E = 200,000
MPa
Lacings
Properties of one C12 x 25
A = 4742 mm²
d = 304.8 mm
lx = 59.94 x 106 mm4
[]
rx = 112.52 mm
tw = 9.83 mm
ly = 1.86 x 106 mm4
bf = 77.39 mm
ry 19.81 mm
tf = 12.73 mm
x = 17.12 mm
Figure 4
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