Density/area curves were a major feature of NFPA 13’s fire sprinkler hydraulic calculations—until the 2022 and 2025 editions. Here’s why they were removed and what replaced them.
Fire protection standards evolve every three years, and NFPA 13 2025 has some big changes. Learn about updates on protecting buildings with sloped and high ceilings.
The fire sprinkler industry is constantly evolving. Learn about some major updates in the NFPA 13 2025 edition, including new rules for dry and preaction systems and supplemental sprinklers.
UL standards help ensure safe and reliable fire protection equipment. Learn about the process and documents, focusing on UL 199 and fire sprinklers.
Learn about some of the biggest NFPA 25 changes in the 2023 edition, including rules on antifreeze fire sprinklers, foam fire suppression systems, testing intervals, and more.
Fire sprinkler testing happens decades after installation for most but not all sprinklers. Learn the NFPA 25 testing & replacement rules and what labs assess.
Learn about the fire code requirements for residential board and care occupancies, including senior housing and other facilities.
Learn about the NFPA standards governing fire sprinkler retrofits and installations and how to read these documents, ID system components, and more.
Fire protection, building, and life safety codes are unique in Canada. Read a rundown of how NFPA & Canada codes & standards interact—and how these rules are different from the U.S.
How is a fire sprinkler system created? Learn about the design process, basic math, and system components used for fire sprinkler system design.
What are the fire sprinkler requirements in California? QRFS explains California Fire Code & breaks down the basic inspection, testing & maintenance rules.
Learn the NFPA model code requirements for rehabilitation and fire safety in historic buildings.
Learn the elements of a life safety evaluation for sports arenas, stadiums, and grounds including systems, plans, and other considerations.
Learn the NFPA model code requirements for maintaining fire safety in churches, mosques, synagogues, and other houses of worship.
Sufficient pressure is vital for working fire sprinklers. But how much sprinkler water pressure is enough? Learn the physics and NFPA rules.
Learn when to contact your authority having jurisdiction—including for building permits, impairments, licenses, and other technical questions.
Learn how to prepare for a fire marshal inspection by knowing the basic requirements—and by utilizing this fire inspection checklist.
Learn about the operations, plans, and school fire safety equipment required by NFPA to maintain fire safety in schools.
