Q3 A reinforced concrete footing carries two 400mm x 400mm columns centered 2m apart and symmetrically arranged on a 4m x 2m x 500mm thick base. The base has been constructed with C25/30 concrete and H20-300 bars in both directions on the bottom face with d=450mm to the lowest longitudinal bars. A proposed change in building use will now impose increased ULS column loads of 2000kN each (4000kN total) on the combined base. Plot the longitudinal SFD and BMD for the combined footing. (a) (b) (c) [5] Confirm that the concrete footing can withstand the new longitudinal bending. Confirm that the concrete footing can also withstand the transverse bending.
Q3 A reinforced concrete footing carries two 400mm x 400mm columns centered 2m apart and symmetrically arranged on a 4m x 2m x 500mm thick base. The base has been constructed with C25/30 concrete and H20-300 bars in both directions on the bottom face with d=450mm to the lowest longitudinal bars. A proposed change in building use will now impose increased ULS column loads of 2000kN each (4000kN total) on the combined base. Plot the longitudinal SFD and BMD for the combined footing. (a) (b) (c) [5] Confirm that the concrete footing can withstand the new longitudinal bending. Confirm that the concrete footing can also withstand the transverse bending.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
![Q3
A reinforced concrete footing carries two 400mm x 400mm columns centered 2m apart
and symmetrically arranged on a 4m x 2m x 500mm thick base. The base has been
constructed with C25/30 concrete and H20-300 bars in both directions on the bottom
face with d=450mm to the lowest longitudinal bars. A proposed change in building use
will now impose increased ULS column loads of 2000kN each (4000kN total) on the
combined base.
Plot the longitudinal SFD and BMD for the combined footing.
(a)
(b)
(c)
[5]
Confirm that the concrete footing can withstand the new longitudinal bending.
Confirm that the concrete footing can also withstand the transverse bending.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa41641a1-6a16-4638-a7b4-9c1ebac9a0a5%2F4e2d60d1-e5ae-4b6c-9ce5-45b91ec5d25d%2Fmqh1m6j_processed.png&w=3840&q=75)
Transcribed Image Text:Q3
A reinforced concrete footing carries two 400mm x 400mm columns centered 2m apart
and symmetrically arranged on a 4m x 2m x 500mm thick base. The base has been
constructed with C25/30 concrete and H20-300 bars in both directions on the bottom
face with d=450mm to the lowest longitudinal bars. A proposed change in building use
will now impose increased ULS column loads of 2000kN each (4000kN total) on the
combined base.
Plot the longitudinal SFD and BMD for the combined footing.
(a)
(b)
(c)
[5]
Confirm that the concrete footing can withstand the new longitudinal bending.
Confirm that the concrete footing can also withstand the transverse bending.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 4 steps with 3 images
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