There's a discussion on the PPI Forums about the CA Seismic exam. Just wondering what members of this forum felt about the level of difficulty.
I agree with ptatohead, there certainly is no one answer to your question, especially with as little context as you provide. However, I will suggest that a major factor on the level of difficulty you will have with the test is your experience and competence with structural engineering. Here's the long version of my experience, below.
For example, my university program was strong Enviro focus; we had two semesters of engineering mechanics, and one semester for science and mechanics of material, combined. That was it, basically. When I took (and passed) the EIT, I struggled for my life in the morning (general) session, but I did the entire afternoon test (enviro focus) twice, went back and double checked that I had marked all of the boxes correctly twice, and left the exam room twenty minutes early. My work experience has been largely remediation, wastewater systems, and enviro compliance. I didn't apply for the PE until I had been out of school for 4 years, so I was pretty rusty.
When I took the 8-hour civil exam, I had studied a whopping 6 hours. During the 250-mile drive to the exam, the transmission on my vehicle started failing. I was stuck at a garage for three hours, and managed to limp my way (<10 mph at times, on I-5) to the motel at about 1 AM. I was so frazzled, I drank an entire sixpack of Sierra Nevada before passing out at about 3 AM. I dragged my carcass to the exam, certain I would fail, but determined to give it a shot and chalk it up to experience. The exam itself was tough, but most of the material was stuff I had seen before. I muddled my way through, but did not feel I had performed very well. On the way back to the motel, the vehicle got worse, and I got stranded and lost in Sac for a while. Again I limped back to the motel, and decided I needed to fix my vehicle more than I needed to do the state-specific tests, so I skipped them.
I found out I passed the 8-hour, so I got primed up for the seismic and surveying for the next exam dates. I studied a seismic review workbook and got to where I understood the concepts and could use the equations with enough flipping back and forth through the references. The surveying I did not worry too much about, since I had been told you could pass that based on good trig skills and judgement (ahem).
Well I got handed my ass on a plate for both tests. I felt like I could do the seismic test if I had another 6 hours, but the 2.5 hours allowed was just long enough for me to realize how much more work I needed to do. For example, going back to shear and moment diagrams and becoming very comfortable with them was not optional. Really, I had to roll up my sleeves and revisit a lot of stuff I barely remembered how to do. Understanding is not enough, proficiency is required. The surveying test was even worse for me, since there were a few trig problems, but they were the long, involved ones and took a lot of time. Three quarters of the test was basically gibberish to me.
I not only felt like I had failed both tests, but I actually felt like I had deserved to fail, even though I put a lot more work into the seismic exam than I had for the 8-hour. Now I am gearing up for the October seismic and surveying. I have put in a good amount of time studying, but I know I have a LOT more to do if I want to feel confident I am not going to have to go through this again.
End of long version. But your experience will (hopefully) be unlike mine. Perhaps you will just guess all of the answers and hit the PE lottery. Or maybe torsional moments and stress-strain relationships are something you play with in your spare time for amusement, when you are not designing 15-story emergency hospitals from scratch with pencil and paper and no reference materials. But if you are asking this question, it might behoove you to get at least one review book and get an idea what you are up against.
Good luck.