ETC Construction Methods & Equipment 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 & Equipment flashcards as text
What is the purpose of formwork in concrete construction?
Answer: To mold and support fresh concrete until it gains sufficient strength
Formwork is a temporary mold that shapes fresh concrete and supports its weight until the concrete hardens enough to be self-supporting.
What does the Proctor compaction test determine?
Answer: The optimum moisture content and maximum dry density of a soil
The Proctor test determines the relationship between moisture content and dry density, identifying the optimum moisture for maximum compaction.
What does the rated capacity of a crane represent?
Answer: The maximum load the crane is designed and tested to lift at a given radius
Rated capacity is the manufacturer's maximum tested and certified load for the crane at a specific boom angle, radius, and configuration.
What type of concrete admixture is used to accelerate setting time in cold weather?
Answer: Calcium chloride or non-chloride accelerator
Accelerating admixtures such as calcium chloride speed up cement hydration, helping concrete gain strength faster in cold conditions.
What is the purpose of a control joint in masonry construction?
Answer: To allow for thermal and shrinkage movement without uncontrolled cracking
Control joints are planned discontinuities that create a weak plane where movement cracks will occur in a predictable, manageable location.
What equipment is used to drive steel H-piles into soil at a construction site?
Answer: Pile driver with drop hammer or hydraulic hammer
A pile driver uses repeated impact from a drop or hydraulic hammer to force steel piles into the ground to required bearing capacity or refusal.