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D-Pipe - Drainage Pipe and Vent Sizing

The Power of Adaptability

Whether you need to size drainage pipes and vents according to UPC, IPC, or your own custom standard, D-Pipe is ready to adapt to your needs. In fact, you can define and keep on hand as many different sizing code files as you like. Click the Download link on the left to try the functional demo version.



The Elite Software D-Pipe program quickly calculates optimal pipe and vent sizes for sanitary building drain systems with a virtually unlimited number of pipe sections. Existing drainage systems can also be analyzed because D-Pipe allows the designer to fix the size of any and all pipe sections. Besides sizing reports, D-Pipe can also print a complete bill of materials showing both labor and material costs. Branch, sewer, and stack pipes along with branch and stack vents are automatically sized in accordance with the UPC or IPC code. D-Pipe also has provision for sizing pipes using codes different from standard. In fact, you can define and maintain as many sizing code files as necessary. D-Pipe is very easy to use as it contains built-in data concerning fixtures, pipe materials, and pipe fittings. D-Pipe does allow the user to maintain various material files, and each material file can contain up to 96 different fixtures, unlimited pipe fittings, and 60 material types.

Program Input

Two types of data are requested: general project data and pipe segment data. The general project data includes the project name and location, building drain and main sewer elevations, the maximum and minimum allowable pipe sizes, and the default pipe material. The pipe data requires that each pipe section be defined as having beginning and ending node numbers along with a type specifier such as branch, stack, sewer, branch vent, or stack vent. In addition, the length, material type (cast iron, copper, steel, PVC, etc.), fitting quantities and types, and connected fixtures must be specified for each pipe section. For designers who do not want to specify detailed fixture information, there is an option for entering a direct drainage fixture unit (DFU) value for each pipe section. Options are provided to quickly view, edit, add, or delete pipe sections. Input sheets are provided for the easy organization of your data.

Autodesk Building Systems and AutoCAD MEP Interface

The D-Pipe program can import a drainage piping system drawn in a .dwg file saved with 32-bit Autodesk Building Systems 2006 to 2007 or 32-bit AutoCAD MEP 2008 to 2012. Importing the pipes for your system saves considerable manual input time. If the drawing has been saved with the Elite piping .dwt template file included in the D-Pipe installation, node number tags will be placed on the drawing as shown in the example AutoCAD MEP screenshot below. After you run D-Pipe calculations, you can then export the pipe sizes back to the drawing. The nominal size of each pipe on the drawing will be changed.

Program Output

The D-Pipe Program provides the following four basic output reports: general project data, pipe size data, vent size data, and a bill of materials with complete cost data. In addition to these reports the built-in pipe data, fitting data, and drainage fixture data can be printed.

Calculation Method

The D-Pipe Program follows the methodology described in the American Society of Plumbing Engineers (ASPE) Databook and the Uniform Plumbing Code published by International Association of Plumbing and Mechanical Officials, and International Plumbing Code published by Building Officials & Code Administrators International, Inc. As new codes emerge, D-Pipe allows you to easily change the sizing tables. All results computed by the program can be easily verified by hand to be in accordance with ASPE and IPC/UPC code requirements.



AutoCAD MEP Drawing with Pipes Sized by D-Pipe


Project Explorer

The project explorer allows you to preview and view all your projects, and to easily traverse the entire drainage network.


Pipe Overview

The pipe overview window allows you to preview data for a specific project.


Pipe Segment

The pipe segment window is where you modify the data pertaining to an individual pipe, including node numbers, elevation, length, material type and maximum diameter, as well as select fixtures and fittings.


Fixture Database

The fixture database window allows you to add and modify a variety of fixtures.


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