Instructions: (i) Figures in the right margin indicate full marks. (ii) Each set of questions should be answered in sequence. (iii) Answer all questions Section-A 1. Determine the maximum column load that can be applied on a 1.5 m x 1.5 m square foundation placed at a depth of 1.0 m within a soil, where y =19.0 kN/m³, c'=10 kN/m² and o'= 24°. Allow a factor of safety of 3. 2. Determine the net ultimate bearing capacity of a mat foundation measuring 20m x 8m on a Saturated clay with Cu = 85 kN/m², ø'= 0 and Dr = 1.5 m. Sand with the allowable settlement is 50 mm, and Ngo = 10. Section-B 3. Determine the maximum load that can be allowed on a 45cm x 45cm diameter bored pile shown in Figure-1 allowing a factor of safety of 3. Take SPT value at the bottom of pile 40. Sand y = 17.0 kN/m³ 4' = 31° 8 m Sand 10 m Ysat = 19.0 kN/m³ d' = 33° Figure - 1 4. If the total service load on column is 800 kN, calculate the number of piles required to carry the column load for the problem of question-3. Also check for group action. Draw necessary sketch. 5. Calculate the allowable capacity of the pile shown in Figure -1 considering the soil as Clay. Take qu = 50 kN/m².
Instructions: (i) Figures in the right margin indicate full marks. (ii) Each set of questions should be answered in sequence. (iii) Answer all questions Section-A 1. Determine the maximum column load that can be applied on a 1.5 m x 1.5 m square foundation placed at a depth of 1.0 m within a soil, where y =19.0 kN/m³, c'=10 kN/m² and o'= 24°. Allow a factor of safety of 3. 2. Determine the net ultimate bearing capacity of a mat foundation measuring 20m x 8m on a Saturated clay with Cu = 85 kN/m², ø'= 0 and Dr = 1.5 m. Sand with the allowable settlement is 50 mm, and Ngo = 10. Section-B 3. Determine the maximum load that can be allowed on a 45cm x 45cm diameter bored pile shown in Figure-1 allowing a factor of safety of 3. Take SPT value at the bottom of pile 40. Sand y = 17.0 kN/m³ 4' = 31° 8 m Sand 10 m Ysat = 19.0 kN/m³ d' = 33° Figure - 1 4. If the total service load on column is 800 kN, calculate the number of piles required to carry the column load for the problem of question-3. Also check for group action. Draw necessary sketch. 5. Calculate the allowable capacity of the pile shown in Figure -1 considering the soil as Clay. Take qu = 50 kN/m².
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:16:43 A E
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Instructions:
(i) Figures in the right margin indicate full marks.
(ii) Each set of questions should be answered in sequence.
(iii) Answer all questions
Section-A
1. Determine the maximum column load that can be applied on a 1.5 m x 1.5 m square
foundation placed at a depth of 1.0 m within a soil, where y =19.0 kN/m³, c'=10 kN/m?
and o'= 24°. Allow a factor of safety of 3.
2. Determine the net ultimate bearing capacity of a mat foundation measuring 20m x 8m on a
Saturated clay with Cu = 85 kN/m?, o'= 0 and Dr = 1.5 m.
Sand with the allowable settlement is 50 mm, and Neo = 10.
Section-B
3. Determine the maximum load that can be allowed on a 45cm x 45cm diameter bored pile
shown in Figure-1 allowing a factor of safety of 3. Take SPT value at the bottom of pile 40.
Sand
y = 17.0 kN/m³
o' = 31°
8 m
Sand
10 m
Ysat = 19.0 kN/m3
d' = 33°
Figure - 1
4. If the total service load on column is 800 kN, calculate the number of piles required to carry
the column load for the problem of question-3. Also check for group action. Draw
necessary sketch.
5. Calculate the allowable capacity of the pile shown in Figure -1 considering the soil as Clay.
Take qu = 50 kN/m?.
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