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In home fires, the risk of dying decreases by about 80% when sprinklers are present. The 2010 NFPA 13D: Standard for the Installation of Sprinkler Systems in One- and Two-Family Dwellings and Manufactured Homes presents updated rules for every aspect of sprinkler design, water supplies, equipment, and placement.

Major changes in this edition:

• To encourage widespread use of sprinkler systems, a new 8-step prescriptive pipe sizing method is presented as an alternative to the hydraulic calculation method.
• NFPA 13D's scope has been expanded to include inspection, testing, and maintenance.
• Text clarifies that "townhouses" can be protected by an NFPA 13D system.
• A new annex provides maintenance and testing information needed by homeowners.