12. How many FUs can be drained for a 10" horizontal branch with a grade of 0.25%: a) Unlimited b) 2500 c) None d) 2499 13. The maximum number of WCs that may be wet vented is: a) 1 b) 2 3 d) Unlimited 14. The maximum size of fixture drain, with the exception of floor drains, that may connect to a wet vent is: a) 1" b) 3" c) 1" d) 2" 15. A separately vented fixture's hydraulic load must be taken into account when sizing the continuous vent in a wet vented group: a) True b) False c) Sometimes d) A) and c) 16. The length of a wet vent is limited to: a) One pipe diameter of fall b) 1.2m c) There is no limit d) 2.5m 17. A wet vent extending through more than one storey may accept a maximum of how many fixtures units per storey on any storey above the first? a) 4 b) 3 2