Interview Q&A Archives - Page 3 of 3 - ENGINEERING BIX

Civil Engineering Interview Questions Part – 9

Question. No.01 In pipe jacking/microtunneling, it is commonly accepted that cover depths of jacking pipes cannot be too shallow (i.e. less than 2D where D is the diameter of jacking pipes). Why? Answer: For pipe jacking/microtunneling, the causes of large settlement are loss of face stability, failure to stabilize ground around shafts, presence of annular space around pipes and shield, drag along pipe joints, etc. The settlement mechanism of shallow depths of pipe jacking/microtunneling is the formation of a settlement

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Civil Engineering Interview Questions Part – 8

Question No.01 Should dolphins be designed in a rigid manner, i.e. resting on several raking piles? Answer: In designing dolphins, they are normally supported on a system of three to four raking piles. This in essence is a rigid structure and exhibits little flexibility e.g. movement against impact and berthing loads by vessels. In fact, this kind of design may not be desirable in terms of maintenance because the dolphins are readily susceptible to damage by high berthing vessels. To

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Civil Engineering Interview Questions Part – 7

Question No: 01 What is rigging? Answer: In sailing, the ropes used to move the sails around so the boat will move in the right direction when the wind blows. Question No. 02 What are the considerations in selecting marine plants and land plants for installation of band drains? Answer: For installation of band drains by marine plants, it must have sufficient water depth to accommodate the marine plants in the first place. However, due to the effect of tides

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Civil Engineering Interview Questions Part – 6

Question No. 01 What Tor stands for in Tor steel? Answer: The owner’s last name Question No. 02 What is the purpose of carrying out water absorption test for precast concrete pipes? Answer: Cement will mix with more water than is required to eventually combine during hydration of cement paste. As such, some voids will be left behind after the hydration process which affects the strength and durability of concrete. With the presence of air voids in concrete, it is

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Civil Engineering Interview Questions Part – 5

Question No. 01 Are there any differences in the methods of compaction between clayey soil material and sandy material? Answer: As suggested by Lars Forssblad (1981), the three main actions of compaction are static pressure, impact force and vibration. Different compactors contain one or more modes of these actions. For example, vibratory tampers perform mainly by the principle of impact while vibratory rollers work with principle of static pressure and vibration. For sandy soils, vibration is adequate for normal compaction

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Civil Engineering Interview Questions Part – 4

Question No. 01 How did street originate in the plumbing term street ell? Answer: A “street ell” may have gotten its name because it describes a 90 fitting particularly useful in tight, street ditches. When installing water pipes under a street, or from a water service, again under the street, into a home or business, this street ell allows one to change pipe direction with one less fitting, and in less space, than with a standard ell. Question No. 02

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Civil Engineering Interview Questions Part – 3

Question No. 1 What is the load transfer mechanism for paving blocks in pedestrian footway? Answer: In Hong Kong, footway is normally designed with paving slabs/interlocking blocks instead of concrete because the extensive use of concrete in pavement is boring. Moreover, poor appearance will result in concrete pavement due to frequently trench openings for utility work. In addition, owing to the prolonged setting and curing time of concrete, the use of concrete pavement inevitably generates disturbance to the general public.

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Civil Engineering Interview Questions Part – 2

01.What are the functions of a column in a building? Answer: A column is used to support the weight of the roof and/or the upper floors. Now days, many columns are used for decorative purposes. A column along with load bearing beams can support a lot of weight. 02. What is the function of packing materials in the joint of concrete pipes in pipe jacking? Answer: Packing materials are about 10 mm to 20 mm thick and are normally made

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Civil Engineering Interview Questions Part – 1

Question No. 01 What is civil engineering? Answer: Civil engineering is a professional engineering discipline that deals with the design, construction, and maintenance of the physical and naturally built environment, including works like roads, bridges, canals, dams, and buildings. Civil engineering is arguably the oldest engineering discipline. It deals with the built environment and can be dated to the first time someone placed a roof over his/her head or laid a tree trunk across a river to make it easier

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