Technical References
In-depth technical guides for door hardware professionals — sizing, mechanisms, materials, and adjustments.
These references are written for architects, specifiers, contractors, and facilities managers who need precise technical detail — not marketing summaries. Each guide covers the underlying mechanics, field adjustment procedures, and comparative performance data needed to make informed hardware decisions and troubleshoot installations.
Available Guides
Closing Speed Adjustment
Step-by-step instructions for adjusting hydraulic self-closing hinges to meet ADA closing force limits and NFPA 80 latching requirements — covers sweep speed, latch speed, and backcheck valve settings.
Hydraulic vs Spring Mechanisms
Engineering comparison of hydraulic fluid-damped and mechanical spring closing mechanisms — performance across temperature extremes, maintenance intervals, adjustment range, and long-term cycle life in commercial applications.
Material Comparison
Stainless steel, aluminum, zinc alloy, and steel hinge body materials compared for corrosion resistance, load capacity, finish durability, and cost — with specific guidance for coastal, healthcare, and high-humidity environments.
Door Closer vs Self-Closing Hinge
Head-to-head comparison of surface-mounted door closers and self-closing hinges — installation complexity, aesthetics, maintenance requirements, code compliance, and total cost of ownership.
Hinge Adjustment Guide
Field adjustment procedures for all common hinge types — spring tension, hydraulic speed control, backcheck, and alignment correction for sagging or binding doors.
Hardware Specification Guide
How to write a complete door hardware specification — template format, required performance criteria, code references, and common specification errors that lead to substitution disputes.
Door Hinge Troubleshooting
Systematic diagnosis and repair guide for common door hinge problems — sagging, squeaking, not closing fully, slamming, and binding. Covers field fixes and when replacement is required.
Coming Soon
Hinge Sizing Guide
How to calculate the correct hinge size and quantity for a given door — door weight, width, and frequency of use translated into specific hinge specifications per ANSI/BHMA standards.
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