All file systems supported by Windows use the concept of files and directories to access data stored on a disk or device. Windows developers working with the Windows APIs for file and device I/O should understand the various rules, conventions, and limitations of names for files and directories.
Both Key and Allen say the typical yard they deal with is about a quarter-acre in size and the sprinkler systems cost about $2,500 to $3,500 to install. Allen says the cost to install sprinklers on half-acre lawns runs $3,500 to $5,500, and one-acre properties cost $6,000 to $8,000.
Cost of installing sprinklers declines. According to a recent NFPA research report, fire sprinkler costs have dropped in recent years. âIn 2008, the average cost we found was $1.61 per square foot of installed sprinklers,â Carli says. âIn 2013, the average is $1.35.â She credits mandates, which means more contractors are installing fire sprinklers in those areas, with the price drop. In some parts of California, according to the report, the cost is lower than $1 per square foot.