CFC Gate Hardware & Access Control 1 — Questions and Answers
Question 1: What type of hinge is most commonly specified for heavy commercial swing gates requiring post-installation adjustment?
- Butt hinge
- Weld-on adjustable hinge (Correct answer)
- Piano hinge
- Butterfly hinge
Correct answer: Weld-on adjustable hinge
Weld-on adjustable hinges provide the structural strength and three-way adjustability needed for heavy commercial swing gates.
Question 2: Which latch type offers the greatest security for a single swing gate by allowing locking from both sides of the fence?
- Spring latch
- Gravity latch
- Padlock-compatible double-sided latch (Correct answer)
- Magnetic catch
Correct answer: Padlock-compatible double-sided latch
A padlock-compatible double-sided latch enables access from inside and outside while also accepting a padlock for added security.
Question 3: What is 'gate sag,' and which component is typically installed to prevent it?
- Gate closing too fast; a hydraulic closer
- Gate dropping at the latch end; an anti-sag kit or tension rod (Correct answer)
- Gate not sealing at the bottom; a bottom sweep seal
- Gate swinging too freely; a gate stop
Correct answer: Gate dropping at the latch end; an anti-sag kit or tension rod
Gate sag occurs when the unsupported latch end of a gate droops under its own weight; anti-sag kits with diagonal tension rods counteract this force.
Question 4: For a double swing gate system, what component ensures the two gate leaves close in the correct sequence?
- Gate stop
- Gate coordinator (Correct answer)
- Automatic surface closer
- Dead bolt strike
Correct answer: Gate coordinator
A gate coordinator mechanically links both leaves so the active (latch) leaf always closes after the passive (strike) leaf, ensuring proper latching.
Question 5: What is the primary function of a gate stop installed on a swing gate?
- To hold the gate in the fully open position only
- To prevent the gate from opening too wide and to protect hinges from over-extension (Correct answer)
- To slow the gate as it approaches the closed position
- To anchor the gate post in concrete
Correct answer: To prevent the gate from opening too wide and to protect hinges from over-extension
Gate stops limit the swing arc to prevent hinges from being over-extended, which would cause premature failure of the hinge hardware.
Question 6: Which material is most appropriate for gate hinges on a vinyl privacy fence installed in a coastal saltwater environment?
- Standard carbon steel
- Zinc-plated steel
- 316 stainless steel or powder-coated aluminum (Correct answer)
- Cast iron
Correct answer: 316 stainless steel or powder-coated aluminum
Grade 316 stainless steel and powder-coated aluminum contain alloying elements that resist chloride-induced corrosion in marine environments.
Question 7: What is the minimum recommended number of hinges for a residential swing gate that is 4 feet wide and 6 feet tall?
Correct answer: 2
Two hinges are the standard minimum for residential gates of typical size, providing adequate support to prevent sag and ensure smooth operation.
