Construction Techniques Flashcards
7 cards from real CFB practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Construction Techniques flashcards as text
When installing subsurface drainage pipe on a large athletic field, what is the minimum recommended grade for the pipe to ensure effective flow?
Answer: 0.5%
A minimum slope of 0.5% (1:200) in drainage pipe is generally required to maintain adequate flow velocity and prevent sediment deposition in the pipe.
What quality control test is used to verify the permeability of a sand-based root zone before installation?
Answer: Saturated hydraulic conductivity test
The saturated hydraulic conductivity test measures how quickly water moves through the root zone material, ensuring it meets design drainage rate specifications.
In synthetic turf field construction, what is 'infill' and what is its primary role?
Answer: Rubber or sand granules added between turf fibers to support blades and provide resilience
Infill material fills the space between the turf fibers, keeping them upright, providing cushioning, and giving the field its performance and safety characteristics.
What is the primary concern when constructing a sports field in an area with expansive (shrink-swell) clay soils?
Answer: Moisture changes cause significant volume changes that crack and heave the surface
Expansive clays absorb water and swell, then dry and shrink, creating differential movement that cracks pavements, distorts grades, and damages drainage systems.
When marking field lines on a natural grass surface, what type of marking material is the current standard for most athletic fields?
Answer: Aerosol chalk paint or water-based athletic field marking paint
Water-based athletic field marking paints applied by striper machines are the current standard, offering safe, non-burning, and durable lines on natural turf.
What is the purpose of a 'capillary break layer' in a USGA-method golf green or premium sports field construction?
Answer: To stop water from wicking upward from the gravel into the sand root zone
A properly sized gravel layer creates a capillary break that prevents water from wicking upward into the sand root zone, keeping the interface between layers hydraulically distinct.
During field construction, what does 'cut and fill' refer to?
Answer: Moving soil from high areas (cut) to low areas (fill) to achieve design grade
Cut and fill is a grading technique where soil is excavated from high spots and relocated to low spots to achieve the designed grade elevation economically.