vpsDue to the growing uncertainty of the impact of COVID-19 and travel restrictions placed on attendees over the weekend, a decision has been made to postpone the VPS Workshop to Summer 2020.  We will be contacting attendees to provide further information about the postponement and next steps in the coming weeks.

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

Click here for full schedule


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

Also recommended are a clinometer, a diameter tape, and a wedge prism (30 BAF will be used during the field problem).

Lastly, it is Spring in Oregon; rain gear may be needed for the field problems in the event of wet weather.

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.


Course Location

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

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

Click here for a campus map

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.

It is recommended that you purchase your parking permit prior to arriving on campus.

To purchase a permit online prior to your arrival, click hereBe sure to purchase a B lot permit.
Once you complete the payment process a confirmation letter will  will be sent to your email. All vehicles without permits will be ticketed. Parking questions may be directed to 541-737-2583. Go here for an OSU parking map.

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. 

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.

Click here for Travel and Accomodations information

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