Building codes generally limit the highest pressure permissible in plumbing systems to: Power Engineering Chapter 111 Building codes generally limit the highest pressure permissible in plumbing systems to: a. 350 kPa b. 490 kPa c. 500 kPa d. 560 kPa e. 600 kPa Answer: D Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+