A combined footing is proposed to support two columns, C1 and C2, with loads equal to 2000 kN and 3000 kN, respectively. The column C1 has dimensions equal to 25x50 cm and C2 has dimensions 25x75 cm, while the spacing between the two columns is 5 meters. The footing is to be founded in a silty sand soil layer with the following engineering properties: γ = 18.2 kN/m3; φ = 33o and c = 30 kPa. The groundwater table is very deep, while the foundation level is 2.1 m from the ground surface, tp.c. (thickness of plane concret
A combined footing is proposed to support two columns, C1 and C2, with loads equal to 2000 kN and 3000 kN, respectively. The column C1 has dimensions equal to 25x50 cm and C2 has dimensions 25x75 cm, while the spacing between the two columns is 5 meters. The footing is to be founded in a silty sand soil layer with the following engineering properties: γ = 18.2 kN/m3; φ = 33o and c = 30 kPa. The groundwater table is very deep, while the foundation level is 2.1 m from the ground surface, tp.c. (thickness of plane concret
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
A combined footing is proposed to support two columns, C1 and C2, with loads equal to 2000 kN and 3000 kN, respectively. The column C1 has dimensions equal to 25x50 cm and C2 has dimensions 25x75 cm, while the spacing between the two columns is 5 meters. The footing is to be founded in a silty sand soil layer with the following engineering properties: γ = 18.2 kN/m3; φ = 33o and c = 30 kPa. The groundwater table is very deep, while the foundation level is 2.1 m from the ground surface, tp.c. (thickness of plane concrete) = 10 cm, fcu = 25 MPa, and the factor of safety against bearing capacity failure is equal to 5.0. It is required to do the following:
(i). calculate the soil bearing capacity (limit to 2.0 kg/cm2 if exceed this value) (ii). determine the footing dimensions
(iii). design the footing for flexure
(iv). check shear and punching
(v). sketch the required steel reinforcement
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step 1: Calculation of Soil Bearing Capacity
VIEWStep 2: Calculation of Footing dimensions
VIEWStep 3: (i) Design the Footing for Flexure:
VIEWStep 4: (ii) Check Shear and Punching: The shear and punching checks can be done using the following steps:
VIEWStep 5: Sketch of Reinforcement detailing
VIEWSolution
VIEW
Step by step
Solved in 6 steps with 1 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