ETC ETC Construction Methods & Field Operations

Question 1

What is the purpose of a shoring system during excavation?

Accepted Answer

To support the walls of an excavation and prevent collapse

Answer

To compact soil at the bottom of the excavation

Answer

To dewater the excavation area

Answer

To measure the depth of the excavation

Question 2

What does the term 'subgrade' refer to in road construction?

Accepted Answer

The native or prepared soil layer below the pavement structure

Answer

The finished asphalt surface layer

Answer

The aggregate base course above the soil

Answer

The drainage layer beneath the pavement

Question 3

What is the purpose of a slump test for concrete?

Accepted Answer

To assess the workability and consistency of fresh concrete mix

Answer

To measure concrete compressive strength

Answer

To determine the water-cement ratio

Answer

To check concrete air content

Question 4

What is the function of rebar in concrete structures?

Accepted Answer

To provide tensile strength that concrete lacks on its own

Answer

To reduce the weight of concrete members

Answer

To improve thermal insulation of the structure

Answer

To speed up concrete curing time

Question 5

What does compaction of fill material achieve in construction?

Accepted Answer

Increases soil density and bearing capacity while reducing future settlement

Answer

Reduces the cost of materials needed

Answer

Improves drainage through the fill layer

Answer

Removes organic material from the fill

Question 6

What is a shop drawing in construction?

Accepted Answer

A detailed drawing prepared by a contractor or fabricator showing how they will build a specific element

Answer

A sketch made by the field superintendent

Answer

The original design drawings issued for construction

Answer

A drawing of the site layout for the contractor's use