1. One of the main advantages of using cased piles are _________
a) On-the-job-length flexibility and Internal inspection after being driven
b) Protect concrete fillings
c) None of the mentioned
d) All of the mentioned
Explanation: The advantages of using cased piles are the on-the-job length flexibility, internal inspection after it is driven.
2. Who was the first to develop a method for placing cast-in-situ concrete piles?
a) McArthur
b) A.M. Wellington
c) Raymond
d) Hiley
Explanation: In 1897, A.A. Raymond patented the Raymond pile system and was first develop a practical, economical way of placing cast-in-situ concrete piles
3. Raymond concrete pile is reinforced with _________
a) Corrugated steel shell
b) Steel mandrel
c) Steel bars
d) None of the mentioned
Explanation: The Raymond standard concrete pile consists of thin corrugated sheet steel closed at the bottom that acts as a reinforcement.
4. The type of cased piles used in soil, where the driving is very hard?
a) McArthur cased pile
b) Raymond standard pile
c) Western button bottom piles
d) Swage pile
Explanation: Swage piles are used with advantage in some soil where it is designed to leave watertight shell for some time before filling the concrete.
5. Western button bottom piles uses ________ for driving.
a) Concrete plug
b) Auger
c) Conical shoe
d) Under-reamer
Explanation: The western button pile uses a concrete plug, of the shape of a button to form an enlarged hole in the soil for driving.
6. The piles that are suitable for end-bearing to friction friction-load carrying soils is _________
a) Swage piles
b) Union metal monotone piles
c) McArthur cased piles
d) Western button pile
Explanation: Monotube piles use tapered fluted steel without mandrel, so they are suitable for a wide variety of soil conditions, from end-bearing to friction-load-carrying soils
7. Which of the following is an advantage of using uncased cast-in-situ piles?
a) They need no storage place
b) The concrete cannot be damaged by driving
c) Special equipment is not required
d) All of the mentioned
Explanation: The uncased piles have the advantage that i) They need no storage place ii) they do not require cutting off excess length iii) do not require special equipment and iv) the concrete is not liable to damage from driving.
8. The types of uncased piles used are __________
a) Swage pile
b) McArthur cased pile
c) Simplex pile
d) All of the mentioned
Explanation: The following are the common types of uncased cast-in-situ concrete piles:
i) Simplex pile
ii) Vibro pile
iii) Franki pile
iv) Padestal pile.
9. The uncased cast-in-situ piles can be used only in the condition, where _______
a) Water should not fall in the hole and Adjacent pile will not damage the concrete
b) Seasonal condition change
c) None of the mentioned
d) All of the mentioned
Explanation: The uncased piles are used only where it is certain that neither soil nor water will fall in to the hole after withdrawing a driven mandrel or shell and also where adjacent pile will not damage the green concrete.
10. In Franki pile foundation, the bottom of the pile is provided in the shape of _________
a) Spherical
b) Mush-room
c) Cone
d) Rectangular
Explanation: The Franki pile has an enlarged base of mush-room shape, which gives the effect of a spread footing