David Bolton ADA Offset Ramp Thresholds: Why the 2-Inch Offset Gets Spec'd Last and Measured Wrong Why the Offset Dimension Is the One Nobody Confirms Until the Threshold Arrives This article is for contractors, facility managers, and architects who specify or install ADA-compliant ramp thresholds ... ADA thresholds accessibility hardware commercial thresholds door hardware wheelchair ramp threshold Jun 1, 2026
David Bolton Mixed Corner Radii on a Spring Hinge: Why One Square Leaf and One Radius Leaf Is Not a Mistake What This Article Covers If you have ever pulled a residential or light-commercial spring hinge out of a box and noticed that one leaf has perfectly square corners while the other has rounded corners,... door hardware hinge installation light commercial spring hinges wood door prep Apr 23, 2026
David Bolton Intermediate Pivots: Why They Fail, When You Need Them, and How to Fix the Problem What Are IntermediatePivots and Why Do They Matter? A pivot set transfers a door's full weight to the floor and overhead frame rather than distributing it across multiple hinge knuckles. That makes pi... commercial hardware door hardware floor closers heavy doors pivots Apr 19, 2026