Geotechnical Engineering

Types of Piles

Question 1
Marks : +2 | -2
Pass Ratio : 50%
Which of the following piles is used to compact loose granular soil?
Friction piles
End bearing piles
Compaction piles
Tension piles
Explanation:
Compaction piles are used to compact loose granular soil, thus increasing their bearing capacity.
Question 2
Marks : +2 | -2
Pass Ratio : 50%
Modern pile driving method was first invented by ___________
Romans
Nasmyth
Terzaghi
Vitruvious
Explanation:
Modern pile driving started with the first steam pile drivers, invented by Nasmyth in 1845.
Question 3
Marks : +2 | -2
Pass Ratio : 50%
Cast-in-situ piles may be classified in to ________ classes.
Three
Eight
Two
Four
Explanation:
Cast-in-situ piles can be classified in to two classes: driven piles(cased or uncased) and bored piles(pressure piles, pedestal piles and under reamed piles).
Question 4
Marks : +2 | -2
Pass Ratio : 50%
Which of the following piles is a cast-in-situ type of concrete pile?
Under-reamed pile
Raymond standard pile
Pressure pile
Anchor pile
Explanation:
Raymond standard pile and Raymond step-taper pile are the common types of cast-in-situ piles.
Question 5
Marks : +2 | -2
Pass Ratio : 50%
The precast concrete piles are generally used for a maximum design load of about ____________
50 tonnes
100 tonnes
75 tonnes
80 tonnes
Explanation:
The precast concrete piles are generally used for a maximum design load of about 80 tonnes, except for large pre-stressed piles.
Question 6
Marks : +2 | -2
Pass Ratio : 50%
Sheet piles are commonly used as __________ in hydraulic structure.
Bulk heads
Bearing stratum
Boulders
Composite piles
Explanation:
Sheet piles are commonly used as bulkheads, or as an impervious cutoff to reduce seepage and uplift under the hydraulic structure.
Question 7
Marks : +2 | -2
Pass Ratio : 50%
The piles that are used for protecting structures from ships and floating object is ____________
Anchor piles
Fender piles
Compaction piles
Batter piles
Explanation:
Fender piles and dolphins are used to protect waterfront structures against the impact of ships or other floating objects.
Question 8
Marks : +2 | -2
Pass Ratio : 50%
Based on the function, piles can be classified into ___________ types.
4
6
8
3
Explanation:
Based on the function or the use, piles may be classified as 1) end bearing piles 2) friction piles 3) compaction piles 4) tension pile 5) anchor pile 6) fender pile 7) batter pile 8) sheet pile.
Question 9
Marks : +2 | -2
Pass Ratio : 50%
The art of driving piles into the ground was first established by __________
Greeks
Romans
Philippians
None of the mentioned
Explanation:
The art of driving was first well-established in Roman times and the details of such foundation were recorded by Vitruvius in 59 A.D.
Question 10
Marks : +2 | -2
Pass Ratio : 50%
Composite piles are suitable for ______________
Maximum design load
Project above the water table
Compacting the soil
Protect water front structures
Explanation:
Composite piles are suitable where the upper part of a file is to project above the water table. Such a pile consists of a lower portion of untreated timber and the upper portion of concrete.