Sigma · Phi · Delta — Beta-Nu Chapter
The Premier
Engineering Fraternity
at Cal Poly SLO
The Beta-Nu Chapter of Sigma Phi Delta is Cal Poly San Luis Obispo's professional-social engineering fraternity — a brotherhood for engineering and computer science students, upholding the traditions passed down through the generations.
Beta-Nu Chapter · Cal Poly San Luis Obispo
Pro Bono Professionis
For the Good of the Profession
About Us
Our history, principles, and why engineers have built a brotherhood here since 1924.
Recruitment
What rush is, what to expect, and how to join Sigma Phi Delta this winter.
Our Brothers
Meet the engineers who lead, build, and represent Beta-Nu today.
Contact
Officer contacts, chapter inquiries, and the easiest way to reach us.
"An engineer should take a good grip on the joys of life..."
Who we are
A brotherhood
built by engineers,
for engineers.
Sigma Phi Delta is a fraternity of engineers devoted to bettering engineering education and industry, as well as its men in membership.
Our priorities involve professionalism and upholding our Code of Ethics throughout both pledging and active life.
Here in San Luis Obispo, California, the Beta-Nu Chapter of Sigma Phi Delta strives to uphold the traditions of its Brotherhood, passed down through the generations.
Winter Rush 2026 · Week 2
Five nights to meet your future brothers.
Open events Monday through Thursday: BBQ, sports night, game night, and a professional night with brothers and alumni. Invite-only events follow Friday and Saturday.