2581
ANNE ARUNDEL COUNTY

A SINGLE GROUP OF FIXTURES MAY BE

INSTALLED WITH THE DRAIN FROM A BACK-VENTED LAVATORY
SERVING AS A WET VENT FOR A BATHTUB OR SHOWER STALL
AND FOR THE WATER CLOSET, PROVIDED THAT:

(A)    NOT MORE THAN ONE (1) FIXTURE

UNIT IS DRAINED INTO A ONE AND ONE-HALF INCH (1 1/2")
DIAMETER WET VENT OR NOT MORE THAN FOUR (4) FIXTURE
UNITS DRAIN INTO A TWO INCH (2") DIAMETER WET VENT.

(B)   THE HORIZONTAL BRANCH SHALL BE A

MINIMUM OF TWO INCHES (2") AND CONNECT TO THE STACK AT
THE SAME LEVEL AS THE WATER-CLOSET DRAIN OR BELOW THE
WATER CLOSET DRAIN WHEN INSTALLED ON THE TOP FLOOR.
SAID BRANCH MAY ALSO CONNECT TO THE WATER-CLOSET
BEND."

(21)   "SECTION 1206 STACK VENTING

1206.1   FIXTURE GROUPS

A SINGLE BATHROOM GROUP OF

FIXTURES CONSISTING OF A WATER CLOSET, BASIN, SHOWER
OK TUB AND A KITCHEN SINK (WITH DISPOSAL AND
DISHWASHER) LOCATED BACK-TO-BACK TO THE BATHROOM, OR
TWO (2) BATHROOMS BACK-TO-BACK, EACH CONSISTING OF ONE

(1) TOILET, BASIN, SHOWER OR TUB MAY BE INSTALLED
WITHOUT INDIVIDUAL FIXTURE VENTS IN A ONE-STORY
BUILDING OR ON THE TOP FLOOR OF A BUILDING PROVIDED
EACH FIXTURE DRAIN CONNECTS INDEPENDENTLY TO THE STACK
AND IN ACCORDANCE WITH THE REQUIREMENTS IN TABLE
1211.1. A SIDE-INLET CONNECTION INTO A FULL FOUR INCH

(4") CLOSET BEND SHALL BE CONSIDERED TO BE AN
INDEPENDENT CONNECTION TO THE STACK.

1206.2   LOWER FLOORS

LOWER FLOORS MAY BE VENTED

AS SET FORTH IN PARAGRAPH 1206.1, PROVIDED THAT (I) A
SEPARATE WYE AND UPRIGHT ONE-EIGHTH (1/8) BEND IS
INSTALLED IN THE STACK, (II) THE STACK GROUP IS
INSTALLED ABOVE THE ONE-EIGHTH (1/8) BEND, AND (III) A
TWO INCH (2") VENT IS INSTALLED NOT LESS THAN SIX
INCHES (6") ABOVE THE FLOOD LINE OF THE TOP FIXTURE."

(22)   "SECTION 1207.4 LOOP VENTS

A FIXTURE OTHER THAN A KITCHEN SINK

OR DISPOSAL HAVING A HYDRAULIC LOAD OF NOT MORE THAN
TWO (2) FIXTURE UNITS MAY BE CONNECTED TO A TWO INCH