Question 1

______ are the cofferdams which can be lifted, floated and placed in another position as soon as its purpose is served.

Accepted Answer

Suspended cofferdams are designed to be lifted, floated, and repositioned after their initial use, making them adaptable for various projects in water.

Question 2

a _____ is define as a structure which is sunk through ground or water to exclude water and semi fluid material during the process of excavation of foundations.

Accepted Answer

B

Question 3

the ______ is suitable for caissons of open well type.

Accepted Answer

D

Question 4

the ______ is suitable for caisson shoes.

Accepted Answer

Reinforced cement concrete is suitable for caisson shoes because it provides the necessary strength and durability required for underwater construction and can withstand the pressure and environmental conditions encountered in such applications.

Question 5

the ______ is found to be the most suitable material for the construction of caisson.

Accepted Answer

Steel is the most suitable material for the construction of caisson due to its high strength, durability, and resistance to corrosion.

Question 6

the ______ was used as a material for the construction of caisson in the early stages of development of caisson.

Accepted Answer

Timber was commonly used in the early stages of caisson development due to its availability, workability, and sufficient strength for the construction requirements of that time.

Question 7

a _____ caisson is open at top and closed at bottom.

Accepted Answer

Box caissons are open at the top and closed at the bottom, designed to be floated to the desired location and then sunk into place by filling them with concrete, making them suitable for foundations in water.

Question 8

a ______ is a caisson which is open at top as well as at bottom.

Accepted Answer

A well is a type of caisson that is open at both the top and the bottom, allowing for water or other materials to be accessed or extracted.

Question 9

a _____ are open at bottom and closed at top.

Accepted Answer

The answer of a _____ are open at bottom and...

Question 10

which the given method is used for dewatering of the foundation trenches.

Accepted Answer

The well point system is a pre-drilling technique used for dewatering the foundation trenches to lower the groundwater level and make the soil conditions suitable for excavation and construction activities.

Question 11

in case of releasing artesian pressure, which precaution should be taken when the system of well points is adopted.

Accepted Answer

The answer of in case of releasing artesian pressure, which...

Question 12

the organic chemicals include epoxy resin, polyester resin and other resins are used in which method of dewatering of the foundation trenches.

Accepted Answer

Chemical grouting involves the use of organic chemicals like epoxy resin, polyester resin, and other resins to fill the pores in the soil, thereby reducing its permeability and facilitating the dewatering process. This method is particularly useful in the dewatering of foundation trenches where water seepage is a concern.

Question 13

from given below, which method for the dewatering of foundation trenches is portable and can be easily moved when required.

Accepted Answer

The answer of from given below, which method for the...

Question 14

in which method a refrigeration plan of required capacity is need to be installed near the site of work.

Accepted Answer

The freezing process in geotechnical engineering involves creating a frozen barrier around the area to be excavated or supported. This method requires the installation of refrigeration equipment near the site to circulate a cooling medium through pipes, freezing the surrounding ground and water. This creates a stable, watertight barrier that allows for safe excavation and construction, making it necessary to have a refrigeration plant of the required capacity installed near the work site.

Question 15

______ process consists of making a number of holes in the ground and then filling these holes by the cement grout under pressure.

Accepted Answer

Cement grouting involves drilling holes and filling them with cement grout under pressure to stabilize soil or fill voids.

Question 16

the formwork from the sides of beams can be removed only after

Accepted Answer

The formwork from the sides of beams can typically be removed after 1 day, as the concrete gains sufficient strength to support itself.

Question 17

the form work from the underside of slabs, can be removed only after

Accepted Answer

The formwork from the underside of slabs is typically removed after 7 days to ensure the concrete has achieved sufficient strength to support its own weight and any imposed loads. This period can vary based on the type of cement, environmental conditions, and additives used in the concrete mix.

Question 18

the arrangement of supporting an existing structure by providing supports underneath, is known as

Accepted Answer

Underpinning is the process of strengthening and stabilizing the foundation of an existing building or other structure. It involves extending the foundation in depth or width so it rests on a more supportive soil layer or distributes its load across a greater area.

Question 19

a temporary rigid structure having platforms to enable masons to work at different stages of a building, is known as

Accepted Answer

Scaffolding is a temporary structure used to support a work crew and materials to aid in the construction, maintenance, and repair of buildings, bridges, and all other man-made structures. It provides platforms for workers to stand on while they work at various heights.

Question 20

pyramid is a type of ______ structure.

Accepted Answer

A pyramid is a massive structure, typically made of stone or brick, with a broad base and sloping sides that meet at a point at the top.

Quiz 2: Construction Structures and Equipment