A W12x79 of A573 Grade 60 (Fy = 415 MPa) steel is used as a compression member. It is 7 m long, fixed at the top and bottom, and has additional support in the weak direction 3 m from the top. Properties of the section are: A = 14,500 mm² , Ix = 258.6 x 10° mm“, I, = 84.375 x 10° mm* X 1. Calculate the critical slenderness ratio of the member. A. 26.208 С. 36.706 В. 45.882 D. 27.529 Calculate the nominal axial load capacity of the column. A. 3 104 kN C. 4 213 kN 2. B. 4 851 kN D.5 344 kN
A W12x79 of A573 Grade 60 (Fy = 415 MPa) steel is used as a compression member. It is 7 m long, fixed at the top and bottom, and has additional support in the weak direction 3 m from the top. Properties of the section are: A = 14,500 mm² , Ix = 258.6 x 10° mm“, I, = 84.375 x 10° mm* X 1. Calculate the critical slenderness ratio of the member. A. 26.208 С. 36.706 В. 45.882 D. 27.529 Calculate the nominal axial load capacity of the column. A. 3 104 kN C. 4 213 kN 2. B. 4 851 kN D.5 344 kN
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
15)
Transcribed Image Text:NSCP 2015
Pn = FerAg
(505.3-1)
The flexural buckling stress, Fer, is determined as follows:
cr 5
KL
1. when
E
< 4.71
(or Fe 2 0.44F,)
r
Fy
Fer =
0.658Fe|
Fy
(505.3-2)
KL
E
> 4.71
( or F. < 0.44F,)
2. when
-
r
Fer = 0. 877F.
(505.3-3)
%3D
where
,= elastic critical buckling stress determined according
to Eq. 505.3-4, Section 505.4, or the provisions of
Section 503.2, as applicable, MPa.
e
Fe
(KL
(505.3-4)
(学)
2
A W12x79 of A573 Grade 60 (Fy = 415 MPa) steel is used as a compression
member. It is 7 m long, fixed at the top and bottom, and has additional support in
the weak direction 3 m from the top. Properties of the section are: A = 14,500
mm² , Ix = 258.6 x 10° mm“,
I, = 84.375 x 106 mm4
1.
Calculate the critical slenderness ratio of the member.
В. 45.882
A. 26.208
С. 36.706
D. 27.529
Calculate the nominal axial load capacity of the column.
A. 3 104 kN
C. 4 213 kN
2.
B. 4 851 kN
D.5 344 kN
3.
Calculate the service axial dead load if the service axial live load is twice as
that of the dead load. Use LRFD.
В. 992 kN
D. 634 kN
A. 1 354 kN
C. 1 093 kN
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 4 steps
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Recommended textbooks for you
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
Fundamentals of Structural Analysis
Civil Engineering
ISBN:
9780073398006
Author:
Kenneth M. Leet Emeritus, Chia-Ming Uang, Joel Lanning
Publisher:
McGraw-Hill Education
Traffic and Highway Engineering
Civil Engineering
ISBN:
9781305156241
Author:
Garber, Nicholas J.
Publisher:
Cengage Learning