"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

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.

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 building mechanical systems (i.e., HVAC, plumbing and fire protection).  Our inspection, assessment, engineering and construction surveillance services include the following piping systems:

- aviation fueling

- fuel terminal, subsea and cross-country pipelines

- chemical

- power

- pulp and paper

- pharmaceutical and food additives

Our building systems clients range from multinational

corporations, to government agencies, to private homeowners.

​​