Gate Engineering
- Structural Design Frame deflection: L/180 max. Wind load: 15-40 psf. Dead load: 2-8 lbs/ft². Torsional stiffness: 500-2000 in·lb/deg. Safety factor: 2.0-3.0.
- Material Properties Yield strength: 35-50 ksi. Tensile strength: 58-80 ksi. Coating thickness: 2-4 mils. Impact resistance: 15-30 ft·lbs. Hardness: RC 15-30.
- Size Parameters Width/height ratio: 0.6-1.2. Diagonal tolerance: ±1/4". Square tolerance: ±1/8". Twist allowance: 1/4"/4 ft. Warp limit: 1/8"/ft.
Hardware Specifications
- Hinge Requirements Load rating: 75-200 lbs/pair. Bearing type: thrust/radial. Pin diameter: 1/2-3/4". Throw distance: 3-5". Grease fitting: zerk type.
- Latch Mechanisms Engagement depth: 1/2-1". Operating force: 5-15 lbs. Cycle life: 25,000-100,000. Security grade: 1-3. Weather resistance: IP54-67.
- Support Systems Post size: 4-8". Foundation depth: 24-48". Diagonal brace: 45-60°. Wheel diameter: 4-8". Track gauge: 1-2".
Performance Standards
- Operation Parameters Opening force: 15-30 lbs. Closing time: 3-7 seconds. Stop angle: 90-180°. Bounce: <1". Self-closing range: 15-45°.
- Environmental Ratings Temperature range: -20 to +140°F. UV resistance: 5-10 years. Salt spray: 1000-2000 hrs. Chemical resistance: pH 4-10. Ice load: 5-15 psf.
- Safety Features Pinch points: <3/8". Edge radius: 1/8" min. Emergency release: 15 lbs max. Child resistance: F3-F5. Anti-climb height: 6-8 ft.
Maintenance Protocol
- Inspection Schedule Visual check: monthly. Hardware tightening: quarterly. Lubrication: 3-6 months. Alignment check: semi-annual. Coating inspection: annual.
- Adjustment Criteria Hinge play: ±1/16". Latch alignment: ±1/8". Level tolerance: ±1/4". Closing force: ±20%. Spring tension: 2-4 turns.
- Service Life Frame: 15-25 years. Hinges: 5-10 years. Latches: 3-7 years. Springs: 25,000-100,000 cycles. Wheels: 2-5 years.