ANSI/BHMA A156.4-2024: Door Closers And Pivots
When slamming, banging doors kept interrupting services in the Boston Trinity Church, Mr. L. C. Norton created the first door closer in 1877. Coil springs and double-swinging…
NFPA 80-2019: Standard for Fire Doors
In another post, we covered NFPA 105-2019: Smoke Door and Opening Protectives, the NFPA standard for smoke doors and other opening protectives, such as smoke…