In a plumbing fixture diagram, if one group is a full bath group, how many cold water supply fixture units do the fixtures represent?

A full bath group typically consists of several specific fixtures, including a toilet, a sink (lavatory), a bathtub, and possibly a shower. Each of these fixtures has a designated number of cold water supply fixture units, which are utilized to assess the demand on the cold water supply system.

In plumbing design, these fixture units allow for accurate planning of water supply lines to ensure adequate pressure and flow for multiple fixtures being used at the same time.

For a full bath group:

• The toilet generally counts as 1 fixture unit.

• The lavatory sink typically counts as 1 fixture unit.

• A bathtub usually counts as 2 fixture units, and if a shower is included, it can add an additional 2 fixture units.

When you calculate the total for a standard full bath group:

• Toilet: 1

• Lavatory: 1

• Bathtub: 2

• Shower: 2

Adding these together gives you a total of 6 fixture units. However, when factoring in potential simultaneous usage and other design regulations or adjustments, this can reflect a greater demand on the water supply line.

Thus, traditionally within some plumbing codes or based on specific local adaptations, the representation of cold water supply fixture units for a