CFI Post Setting & Foundation Work Flashcards
6 cards from real CFI practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CFI Post Setting & Foundation Work flashcards as text
A fence installer notices the soil at the job site is expansive clay. Which adjustment should be made?
Answer: Increase post hole diameter and depth beyond standard minimums
Expansive clay soil swells and shrinks with moisture changes, so larger and deeper footings are required to resist the increased lateral and uplift forces.
What is the recommended spacing between line posts for a standard 6-foot wooden privacy fence?
Answer: 8 feet on center
Standard 6-foot privacy fence panels are typically 8 feet wide, so line posts are set 8 feet on center to match panel widths and minimize waste.
Which method is used to set posts on a sloped yard so the fence rails remain level?
Answer: Both A and C are valid methods
Both racking (angling the rails to follow the slope) and stepping (dropping panels in level increments) are accepted methods for installing fences on sloped terrain.
When bracing end posts temporarily during concrete curing, which method is correct?
Answer: Stake 2×4 diagonal braces from the post to the ground on two sides
Diagonal 2×4 wood braces staked to the ground on perpendicular sides hold the post plumb while the concrete footing cures without disturbing it.
What is the purpose of leaving a slight crown (dome) on the concrete above grade around a wooden fence post?
Answer: To shed water away from the post base and prevent rot
A crowned concrete collar slopes water away from the post base, preventing pooling and slowing moisture-related decay at the most vulnerable wood-to-concrete junction.
Which type of post anchor is used when attaching fence posts to an existing concrete surface such as a patio?
Answer: Surface-mount post base with anchor bolts
Surface-mount post bases bolted into existing concrete with expansion or epoxy anchors allow posts to be installed without breaking through the concrete slab.