vpsRegistration Now Open!
Early Bird Pricing ends at midnight on February 3rd!


The Variable Probability Sampling course is offered as a service to foresters. Two popular methods of timber cruising will be covered in detail: variable-plot sampling and 3-P sampling (Probability, Proportional to Prediction). The course is suitable for relative beginners as well as those with experience who like to brush up on the principles and up-to-date computation techniques using hand calculators and microcomputers. Field exercises using both techniques are an important part of the course.


Preliminary Schedule at a Glance

Monday, March 23 – Registration begins at 11 a.m., Course begins at 1:00 p.m.
Tuesday, March 24 through Thursday, March 26 – Full day coursework with a mix of lecture and field work
Friday, March 27 – Coursework until noon. Program ends at 12:00 noon



Participants are invited to submit problems they have encountered in either field application or office computation in variable-plot sampling for a special session during the first part of the program. All such questions may be submitted in advance to the short course director, Dr. James Kiser, before March 1, 2020.

Equipment Needed:

Please note the following is helpful, please bring with you for the workshop if you have them:

  • American Relaskop
  • Laptop
  • Loggers Tape
  • D Tape

Rain clothes will be needed for the field problems in the event of wet weather. Also recommended are a clinometer, a diameter tape, and a wedge prism (30 BAF will be used during the field problem). A Spiegel Relaskop would be helpful.


Course Fees*

Early Bird – for registrations prior to midnight on February 3rd:  $795

Late Registration Pricing – for registrations after 12:01a.m. on February 4th:  $895

*Course fee includes lab and field work, as well as a light breakfast and lunch each day.




Location Details:

We look forward to seeing you at 1:00 p.m. on Monday, March 23rd at:

Oregon State University
Richardson Hall, Room 243
3180 SW Jefferson Way
Corvallis, OR 97331


Parking on Campus:

Visitor permits are required Monday – Friday, 7:00 a.m. – 5:00 p.m.
Visitor permits are $10-$12 per day. (Specify a B parking pass)
Guest parking is available in the B3 parking lot across from Richardson Hall, accessible from Washington Street or 30th Street.

When parking on Campus, Visitor Permits must be displayed on the dash of your vehicle at all times. If the permit is not displayed you may receive a parking violation. It is recommended that permits be purchased online prior to your arrival. However, there are kiosks located in each of the visitor parking lots to purchase a permit on site if needed.

To purchase a permit online prior to your arrival, click here.
Once you complete the payment process a confirmation letter will appear and one will be sent to your email. This confirmation letter will serve as your permit. Print the confirmation letter and place it on your dash while parking on campus. All vehicles without permits will be ticketed.
Parking questions may be directed to 541-737-2583. Go here for an OSU parking map.

Note: if you are staying at the Hilton Garden Inn, parking is complimentary. You can leave your car in the Hilton parking lot at no charge.

Campus Transportation via Beaver Bus:  The Beaver Bus is a complimentary shuttle service, that makes regular stops throughout campus.  More information on the shuttle can be found here: http://parking.oregonstate.edu/shuttle.


Travel and Accomodations

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