In a sanitary drainage system, a drain trap should be located within _____ of the fixture it serves. Power Engineering Chapter 112 In a sanitary drainage system, a drain trap should be located within _____ of the fixture it serves. a. 750 mm b. 610 mm c. 590 mm d. 460 mm e. 350 mm Answer: B Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+