"A well-regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms shall not be infringed."
- James Madison of Virginia, et al

"A man's rights rest in three boxes. The ballot box, jury box and the cartridge box."
                                                                                          -Frederick Douglass of Maryland

"... and if you don't have a sword, sell your cloak and buy one"
- Jesus of Nazareth

Welcome to Corish Engineering Online

I am the proprietor, William P. Corish, P.E.  We've been providing mechanical engineering services since the establishment of our firm in 2001. Our work is concentrated in two areas; industrial-grade piping systems and specialized building mechanical systems (i.e., HVAC, plumbing and fire protection).  We offer piping system inspection, assessment, engineering and construction surveillance services to the following industries and clients:

- petroleum

- chemical

- power

- pulp and paper

- military and government.

Our building systems clients range from multinational corporations to private homeowners.


Professional engineering

I am licensed to practice engineering in the following jurisdictions:

The Commonwealth of Virginia

The State of Maryland

The State of West Virginia

The State of New Jersey

The State of Texas​

The State of North Carolina

It is still possible we can serve you in other jurisdictions. Many states offer temporary licensure while an application for permanent licensure is processed.  I maintain an NCEES Record to facilitate this process.