AdministrationQuestion 88 of 110
A change order adds two lavatories at 1 DFU each and one water closet at 4 DFU to a branch. By how many drainage fixture units does the branch load increase, so plan review can confirm the pipe is still adequate?
a.4 DFU
b.8 DFU
c.10 DFU
d.6 DFU
Explanation
Added load = (2 x 1) + (1 x 4) = 2 + 4 = 6 DFU. A change order that adds fixtures raises the drainage fixture-unit load, so a plan revision must confirm the existing branch and stack still have capacity before the work is installed. If the new total exceeds the pipe capacity, the branch must be enlarged.
Law Reference: UPC §703.0Practice all 110 questions free — no signup required.
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