ETC Construction Methods & Field Operations Flashcards
6 cards from real ETC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 ETC Construction Methods & Field Operations flashcards as text
What is the purpose of a shoring system during excavation?
Answer: To support the walls of an excavation and prevent collapse
Shoring systems support the sides of an excavation to prevent cave-in and protect workers from soil collapse.
What does the term 'subgrade' refer to in road construction?
Answer: The native or prepared soil layer below the pavement structure
Subgrade is the compacted native or improved soil layer that forms the foundation for the pavement structure above.
What is the purpose of a slump test for concrete?
Answer: To assess the workability and consistency of fresh concrete mix
The slump test measures how much a cone of fresh concrete settles under its own weight, indicating its workability and water content.
What is the function of rebar in concrete structures?
Answer: To provide tensile strength that concrete lacks on its own
Rebar provides tensile and flexural strength to concrete, which is strong in compression but weak in tension.
What does compaction of fill material achieve in construction?
Answer: Increases soil density and bearing capacity while reducing future settlement
Compaction increases the dry density of soil by reducing air voids, improving load-bearing capacity and minimizing future settlement.
What is a shop drawing in construction?
Answer: A detailed drawing prepared by a contractor or fabricator showing how they will build a specific element
Shop drawings are detailed fabrication and installation drawings prepared by contractors or suppliers showing exact dimensions, materials, and methods.