Problem 2.1 –
A proposed column has the following design loads:
Axial Load: P
D
= 200 k, P
L
= 170 k, P
E
= 50 k, P
W
= 60 k (all compression)
Shear Load: V
D
= 0 k, V
L
= 0 k, V
E
= 40 k, P
W
= 48 k
Compute the design axial and shear loads for foundation design using ASD.
Solution
(2.1)
P = P
D
= 200 k
V = V
D
= 0 k
(2.2)
P = P
D
+ P
L
= 200 k + 180 k =
370 k
→
Governs
V =
V
D
+ V
L
= 0 k
(2.3a) P = 0.75(P
D
+ P
L
+ P
W
) = 0.75(200 k + 170 k + 60 k) = 322 k
V = 0.75(V
D
+ V
L
+ V
W
) = 0.75(0 k + 0 k + 48 k) =
36 k
→
Governs
(2.4a) P = 0.75(P
D
+ P
W
) = 0.75(200 k + 60 k) = 195 k
V = 0.75(V
D
+ V
W
) = 0.75(0 k + 48 k) = 36 k
Problem 2.9
– A certain clayey soil contains 0.30 percent sulfates. Would you anticipate a
problem with concrete foundations in this soil? Are any preventative measures necessary?
Explain.
Solution
Per Table 2.3, on page 40, severe problems with sulfates
 Use Type V cement
 W:C Ratio
≤
0.45
Problem 2.14
– A twostory department store identical to the one in Figure 2.12 is to be built.
This structure will have reinforced masonry exterior walls. The ground floor will be slabon
grade. The reinforced concrete upper floor and roof will be supported on a steelframe with
columns 50ft oncenter. Compute the allowable total and differential settlements for this
structure.
Solution
δ
a
= 1 inch
(per Table 2.1 on page 29)
ϴ
a
= 1/500 (per Table 2.2 on page 33)
δ
Da
=
( )( )
ft
in
ft
1
12
50
500
1
=
1.2 inches
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View Full DocumentProblem 3.2 
A certain saturated sand (S = 100%) has a moisture content of 25.1% and a
specific gravity of solids of 2.68. It also has a maximum index void ratio of 0.84 and a minimum
index void ratio of 0.33. Compute its relative density and classify its consistency.
Solution
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 Spring '10
 Zapata
 Geotechnical Engineering, kPa, Shear strength

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