A rough in plumbing diagram is a isometric diagram that will help determine if all of your plumbing will meet code. Sometimes a rough in plumbing diagram will be necessary to get a building permit. A rough in plumbing diagram is basically a sketch that includes all pipes, pipe fittings, drains and vent piping. The use of this diagram can save you time, money and headaches. By using a rough in
. plumbing diagram you will know if all of your plumbing fixtures and pipes are the correct size for your plumbing job. You will know ahead of time if your plumbing plan will meet plumbing codes. This way you will not spend money or time on purchasing materials that can not be used.A rough in plumbing diagram is a 3-D drawing that illustrates what your drainage and vent lines would look like when installed, but without all of the other building materials in your house. You would see the pipes and all of their connections. You would also see the pipe sizes, fittings and vents piping. The rough in plumbing diagram should only include new plumbing being installed. If you are only doing the bathroom in your existing home then you only need to include the new plumbing that is for the bathroom. You do not include the plumbing for the rest of the house that is already in use. Vent piping is represented by using a dashed line in your diagram. You should show where the vent will connect to an existing vent pipe or where it will exit through the roof. Make sure that your vent cross sectional area is the same as the waste cross sectional area. To make sure you have enough vents you need to figure out the aggregate cross sectional area. The formula to do this is to multiply diameter of the pipe by diameter of the pipe and then multiply by .7854. Waste plumbing is represented by solid lines with their sizes clearly marked. More reference links: http://www.askthebuilder.com/722_Rough-In_Plumbing_Diagram.shtml http://www.ckpplumbing.com/plumbing_diagram/bathroom_rough_in.php http://www.reference.com/browse/rough-in-plumbing-diagram
