The following list Plumbing Industry Resources websites provide the architect with helpful technical resources. For plumbing related articles, visit the plumbing page at

Plumbing & Drainage Institute

The Plumbing & Drainage Institute is an association of manufacturers of plumbing and drainage products. Their website includes a series of publications that include information of designing grease interceptors and, most helpful to architects, a list of the minimum space requirements for in-wall plumbing fixture supports.

American Society of Plumbing Engineers

The ASPE is the international organization for professionals skilled in the design, specification and inspection of plumbing systems. They sell a number of technical publications and they also sell some very helpful webinars.

Plumbing Manufacturers International

The Plumbing Manufacturers International's website is called The website includes some helpful resources, including a listing of various markings that can be found on plumbing products.

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