100 300 H 4.8 kPa surcharge floor load Pp = 600 kN PL = 800 kN C L MD = 20 kN-m M₁ = 30 kN-m 16-mm-diameter longitudinal bars and dowels 16-mm-dia. bars 75 clear cover An architectural requirement of 375 mm by 375 mm column is provided. The design loads supported by the column from structural analysis are as follows: Dead Loads: Axial Load Reaction P 600 kN Internal Moment Reaction M 20 kN-m Live Loads: Axial Load Reaction P Internal Moment Reaction M 800 kN 30 kN-m The NSCP C101-15 Table 405.3.1 applicable load combinations are: U U 1.4D 1.2D + 1.6L The reinforced concrete material strengths are as follows [NSCP C101-15 Sec. 419.2.1.1 and Table 420.2.2.4(a)]: Se Sy 28 MPa at 28 days 420 MPa and uncoated steel It is required to design the square tied column and the supporting square spread footing. Use 16-mm-diameter steel reinforcement following ASTM A615. The dowels may be required to carry some of the column load across the column-footing interface. The top of the footing will be covered with 300 mm backfill soil with a density of 16 kN/m³, and a 100-mm-thick basement floor. The basement floor load is 4.8 kPa and serves as a surcharge. For shallow foundations, the allowable bearing pressure is 290 kPa for medium stiff clay soil.
100 300 H 4.8 kPa surcharge floor load Pp = 600 kN PL = 800 kN C L MD = 20 kN-m M₁ = 30 kN-m 16-mm-diameter longitudinal bars and dowels 16-mm-dia. bars 75 clear cover An architectural requirement of 375 mm by 375 mm column is provided. The design loads supported by the column from structural analysis are as follows: Dead Loads: Axial Load Reaction P 600 kN Internal Moment Reaction M 20 kN-m Live Loads: Axial Load Reaction P Internal Moment Reaction M 800 kN 30 kN-m The NSCP C101-15 Table 405.3.1 applicable load combinations are: U U 1.4D 1.2D + 1.6L The reinforced concrete material strengths are as follows [NSCP C101-15 Sec. 419.2.1.1 and Table 420.2.2.4(a)]: Se Sy 28 MPa at 28 days 420 MPa and uncoated steel It is required to design the square tied column and the supporting square spread footing. Use 16-mm-diameter steel reinforcement following ASTM A615. The dowels may be required to carry some of the column load across the column-footing interface. The top of the footing will be covered with 300 mm backfill soil with a density of 16 kN/m³, and a 100-mm-thick basement floor. The basement floor load is 4.8 kPa and serves as a surcharge. For shallow foundations, the allowable bearing pressure is 290 kPa for medium stiff clay soil.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
A square spread footing supports a square tied column as shown. Assume that the reinforced concrete is normal weight (24 kN/m3) and
= 1.00 (NSCP C101-15 Table 419.2.4.2). The column has a height of 3.5 meters.
1. Calculate the eccentricity e = Mu/Pu (mm) and check it for the limiting requirement that it smaller than 0.1c where c is the dimension of the column.
2. Calculate the number of longitudinal bars N (pcs) using the given bar diameter. Sketch the cross-section of the column. Check minimum number of reinforcement.
3. Calculate the required spacing s of lateral ties (mm) using 10-mm-diameter bars. Sketch the cross-section of the column depicting the layout of the bars.
Transcribed Image Text:100
300
H
4.8 kPa surcharge
floor load
Pp =
600 kN
PL
= 800 kN
C
L
MD = 20 kN-m
M₁ = 30 kN-m
16-mm-diameter
longitudinal bars
and dowels
16-mm-dia. bars
75 clear
cover
![An architectural requirement of 375 mm by 375 mm column is provided. The design loads supported by the column from structural analysis are as follows:
Dead Loads:
Axial Load Reaction P
600 kN
Internal Moment Reaction M
20 kN-m
Live Loads:
Axial Load Reaction P
Internal Moment Reaction M
800 kN
30 kN-m
The NSCP C101-15 Table 405.3.1 applicable load combinations are:
U
U
1.4D
1.2D + 1.6L
The reinforced concrete material strengths are as follows [NSCP C101-15 Sec. 419.2.1.1 and Table 420.2.2.4(a)]:
Se
Sy
28 MPa at 28 days
420 MPa and uncoated steel
It is required to design the square tied column and the supporting square spread footing. Use 16-mm-diameter steel reinforcement following ASTM A615. The dowels may
be required to carry some of the column load across the column-footing interface. The top of the footing will be covered with 300 mm backfill soil with a density of 16
kN/m³, and a 100-mm-thick basement floor. The basement floor load is 4.8 kPa and serves as a surcharge. For shallow foundations, the allowable bearing pressure is 290 kPa
for medium stiff clay soil.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F016f0eac-0621-46e9-9c81-4377e7e59b0d%2F808f5983-8d13-411c-abc2-284dd2b89b38%2F29gw21q_processed.jpeg&w=3840&q=75)
Transcribed Image Text:An architectural requirement of 375 mm by 375 mm column is provided. The design loads supported by the column from structural analysis are as follows:
Dead Loads:
Axial Load Reaction P
600 kN
Internal Moment Reaction M
20 kN-m
Live Loads:
Axial Load Reaction P
Internal Moment Reaction M
800 kN
30 kN-m
The NSCP C101-15 Table 405.3.1 applicable load combinations are:
U
U
1.4D
1.2D + 1.6L
The reinforced concrete material strengths are as follows [NSCP C101-15 Sec. 419.2.1.1 and Table 420.2.2.4(a)]:
Se
Sy
28 MPa at 28 days
420 MPa and uncoated steel
It is required to design the square tied column and the supporting square spread footing. Use 16-mm-diameter steel reinforcement following ASTM A615. The dowels may
be required to carry some of the column load across the column-footing interface. The top of the footing will be covered with 300 mm backfill soil with a density of 16
kN/m³, and a 100-mm-thick basement floor. The basement floor load is 4.8 kPa and serves as a surcharge. For shallow foundations, the allowable bearing pressure is 290 kPa
for medium stiff clay soil.
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