BATHROOM
The most common bathroom layout is the single plumbed wall. All fixtures are lined up and served from one compact source of drains, water supplies and venting. This saves on plumbing installation and provides efficient distribution of heated water, especially when the wall is near a water heater. These walls need to be constructed of 90 x 45 millimetre studs, rather than 90 x 35 millimetres, mainly to accommodate the larger vent stack for the toilet. Even if your home has a large ensuite, it likely has at least one bathroom elsewhere in the house that’s arranged this way.Tubs: Standard tubs are 1500 to 1650 millimetres long and 750 millimetres wide. The depth can be as little as 350 millimetres and as much as 500 millimetres. Toilets: You need at least 700 millimetres of clear space in front of toilets for ease of movement, and 200 millimetres on either side. Single sinks: For a single sink, you need at least 600 millimetres of width, but 900 millimetres is more comfortable. Double sinks: You can squeeze two sinks into 1500 millimetres of width, but 1800 millimetres or more is preferred.
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