If you are planning the design or renovating of a bath space, you should start with the basics. Your goal is to plan the use of the floor of the bathroom to accommodate standard size of the tub and leave enough space for accessories sink and toilet.
Length and width
The width of the bathtub is a standard 30 inch (76 cm) wide. If the tub is located on a standard bath 60 inches by 108 inches (or 5 feet by 9 feet or 152 cm by 274 cm), the length of the bath is equal to the width of the bathroom, which is 60 inch (152 cm).
The tub may have a dimension of between 14 inches (35 cm) and 17 inches (43 cm) high. If you go to the bathroom design to facilitate the transfer of a person with physical disabilities, consider the creation of a shower with a ledge on which you can roll a wheelchair instead of a bath.
Check local building codes
It is important that you check local building codes before planning the bathroom. There will be a maximum allowable distance (i.e., the number of inches) between the pipes, as pointing Leon A. Brochette author of “Remodeling a bathroom”. You can probably plan the position of the tub at the other end of the bathroom in front of its door.
Space adjacent to the tub
Once you have planned how much space will be needed to install the bath accessory, or to build a tub, you should plan the space next to the tub to dry a person. For example, you could add a space of 30 inches (76 cm) by 60 inches (152 cm) for this purpose. If the bath is immediately next to the toilet, they should be spaced at least 16 inches (40 cm) from the centerline of the toilet. You can also create a platform of 60 inches (152 cm) beside the tub for bathers to come and go easily.