1. Tardigrade
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  3. Physics
  4. I. The use of pillars or columns is very common in building and bridges. II. A pillar with rounded ends supports less load than that with a distributed shape at ends. III. Building has to take into account the conditions under the cost and long period, reliability of usable materials, etc. Which of the following statement(s) is/are correct?

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Q. I. The use of pillars or columns is very common in building and bridges.
II. A pillar with rounded ends supports less load than that with a distributed shape at ends.
III. Building has to take into account the conditions under the cost and long period, reliability of usable materials, etc.
Which of the following statement(s) is/are correct?

Mechanical Properties of Solids

Solution:

Use of pillars or columns is very common in buildings and bridges. A pillar with rounded ends as shown in Fig. (i) supports less load than that with a distributed shape at ends [Fig. (ii)].
image
The precise design of a bridge or a building has to take into account to the conditions under which it will function, the cost and long period, reliability of usable materials, etc.
So, all statements are correct.