Question
In: Civil Engineering
A 5-kN horizontal load acts on the column shown in Figure Q3 at a location of...
A 5-kN horizontal load acts on the column shown in Figure Q3 at a location of 1.7 m above the ground level. 50 kN Elev. 0.0 GWT-Elev.-1.1 m Elev.-2.0 m_ Figure Q3 (1) Determine a suitable footing size, using the following information: The site soil is granular soil with an angle of friction 20°, a unit weight of 16.5kN/m (above the groundwater table) and a saturated unit weight of 19.8 16.5kN/m3: Factor of safety FS-2.5; (2) If the horizontal load were increased to 10-kN, what would be the footing size? (3) If the ground water table subsides to a depth outside the foundation influence zone, what would be the factor of safety of the footing you designed in (1)? (Hint: You may want to design a square footing)
Solutions
Ally Wells answered 8 months agoRelated Solutions
Q3 (a) Figure Q3 (a) shows a cantilever beam which is carry a load P at...
Q3 (a) Figure Q3 (a) shows a cantilever beam which is carry a
load P at point C.
(i) Sketch the deflection curve of the beam.
(ii) Derive the bending moment deflection, slope deflection and
deflection equation at b-b using Double Integration Method.
(iii) Calculate the maximum deflection. Given: L= 10 m, a= 3m, P=
25 kN. EI is constant
(b) Figure Q3 (b) shows a solid steel spindle AB that has a
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A branching pipe connects two storage tanks as shown in Figure Q3 below. Figure Q3 (a)...
A branching pipe connects two storage tanks as shown in Figure
Q3 below. Figure Q3
(a) Write down the continuity equation as it applies to flows in
the pipes 1, 2 and 3. [1 mark]
(b) Write down the energy equation in terms of energy heads at A
and at B and quantities relating to flow in the pipes in between.
[2 marks]
(c) What can be said about the energy loss in pipe 2 relative to
that in pipe...
A short reinforced concrete column is subjected to a 1000 kN axial compressive load. The moduli...
A short reinforced concrete column is subjected to a
1000 kN axial compressive load. The moduli of elasticity of plain
concrete and steel are 25 GPa and 207 GPa, respectively, and the
cross-sectional area of steel is 2% of that of the reinforced
concrete. Considering the column as a structural member made of a
composite material and subjected to load parallel to the steel
rebars, calculate the following:
a. the modulus of elasticity
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b. the load...
A short reinforced concrete column is subjected to a 1000 kN axial compressive load. The moduli...
A short reinforced concrete column is subjected to a
1000 kN axial compressive load. The moduli of elasticity of plain
concrete and steel are 25 GPa and 207 GPa, respectively, and the
cross-sectional area of steel is 2% of that of the reinforced
concrete. Considering the column as a structural member made of a
composite material and subjected to load parallel to the steel
rebars, calculate the following:
a. the modulus of elasticity
of the reinforced concrete
b. the load...
A 450 mm × 650 mm column supports factored axial load of 2500 kN centered in...
A 450 mm × 650 mm column supports factored axial load of 2500 kN
centered in single footing. After assuming the depth and density of
soil above footing, assume the required depth of footing [10
marks].
a) Check depth due to two-way shear
b) Check depth due to one-way shear action
c) Calculate the bending moment and steel reinforcement
e) Determine development length of dowels
d) Check bearing stress
e) Determine development length of dowels
1. The figure below shows a square foundation which applies a load of 63 kN/m2 at...
1. The figure below shows a square foundation which applies a
load of 63 kN/m2 at the ground surface. The soil profile consists
of 3 clay layers where the coefficient of volume compressibility
for the clay falls linearly from 0.05 m2/MN at the ground surface
to 0.025 m2/MN at the bottom of layer 3. The stress change
distribution with depth due to the foundation load is shown in the
table.
Depth (m)
Stress change (kN/m2)
0
63
4*
46.94
8...
A rectangular footing (0.75m∙0.75m), embedded 0.5 m, carries a downward column load of 200 kN. The...
A rectangular footing
(0.75m∙0.75m),
embedded 0.5 m, carries a downward column load of
200 kN. The footing is supported on an
overconsolidated clay with the following properties:
Cr = 0.05
e = 0.7
OCR = 2.0
PI = 55
cu = 200 kPa
ϒsat = 16.2 kN/m3
The ground water table is at a depth of 1.0 m below the ground
surface.
a) Calculate the primary consolidation settlement for this
footing.
b) Is the calculated Sc within...
Q3. The total load of a chimney and its circular footing is 35 MN, as shown...
Q3. The total load of a chimney and its
circular footing is 35 MN, as shown in the figure. Assume the
average unit weight of soil below and above the water table is the
same.
Presume: B (diameter) = 8 m, H = 6 m, and D = 2 m.
According to SPT results, the average N-value for sandy soil
below the footing is 20.
Estimate the values of the friction angle and the average unit
weight of soil based...
The cantilevered beam shown in the accompanying figure is used to support a load acting on...
The cantilevered beam shown in the accompanying figure
is used to support a load acting on a balcony. The deflection on
the centerline of the beam is given by the following
equation.
Y =-wx^2/24EI(x^2-4Lx + 6L^2)
where
y = deflection at a given x location (m)
w = Distributed load (N/m)
E = modulus of elasticity (N/m^2)
I = second moment of area (m^4)
x = distant from the support as shown (x)
L = length of the beam (m)...
A square tied column with f’c=5 ksi and steel with fy=60 ksi sustains an axial load...
A square tied column with f’c=5 ksi and steel with fy=60 ksi
sustains an axial load of 225 kips dead load and 375 kips live load
and a bending moment of 110 kip-ft dead load and 160 kip-ft live
load. Determine the minimum size column and its reinforcement.
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