2024 Variable Probability Sampling Course

Start Date: March 25, 2024
End Date: March 29, 2024
Location: Corvallis, OR

1:00 pm Registration at Richardson Hall
1:30 pm

  • Introduction of course
  • History of Variable Plot Cruising
  • Basic principles and theory

3:00 pm Afternoon Break
3:15 pm

  • Determination of Basal Area
  • BAF factors
  • Tree Counts
  • Tree Measurements

7:30 am Coffee and Individual Questions
8:00 am

  • Statistical Analysis
  • Means (Average)
  • Standard Deviation
  • Coefficient of Variation
  • Standard Error

9:30 am Morning Break
9:45 am

  • Sampling Techniques
  • Random
  • Systematic
  • Calculation of BAF
  • Plot Radius Factor
  • Cruise Design
  • Volume Calculations/ grade/defect

11:45 am Box Lunch, Travel to McDonald Forest
1:00-5:00 pm

  • Field Problem – VP
  • Field Problem Calculations

7:30 am Coffee and Individual Questions
8:00 am

  • Volume Calculations
  • Log Grades & defects

9:30 am Morning Break
9:45 am

Statistical Issues
Stand & Stock Tables
Analysis of field problem

12:00 pm Group Lunch

1:00 pm

  • Timber Cruising Guide
  • Balancing TC & VBAR
  • Software for Balancing
  • Advantages of VP sampling
  • Special Session on participant questions.

3:00pm Afternoon Break
3:15 pm 3P Computer Demo
3P Sampling, Crew Chiefs and handhelds
6:00 pm Group Dinner

7:30 am Coffee and Individual Questions
8:00 am

  • Intro to 3P Sampling
  • Demo of 3P Process

9:30 am Morning Break
9:45 am

  • Guest Presentations 3P (USFS)
  • Case Studies
  • 3P, Fall and Buck (BLM)

11:45 am Group Lunch, Travel to McDonald Forest
1:00-5:00 pm Field Problem – 3P

7:30 am Coffee and Individual Questions
8:00 am

  • 3P Volume Calculations
  • Statistical Analysis
  • 3P field problem results
  • Sample Size issues in 3P
  • Check cruising and adjustment
  • Advantages of 3P sampling
  • Wrap Up
About this Event
The workshop is currently at capacity. You can be added to the waitlist by using the "Click here to Register button." Spots will only open up if we have cancellations.

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 25 - Registration begins at 11 a.m., Course begins at 12:00 noon.
  • 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 last part of the program. All such questions may be submitted in advance to the short course director, Dr. James Kiser, before March 1, 2024.

Equipment Needed: Please note the following is helpful, please bring with you for the workshop if you have them:
  • Hard Hat and cruisers vest
  • American Relaskop
  • Laptop
  • Loggers Tape
  • D Tape
Also recommended are a clinometer, a hypsometer or laser for tree heights, and a wedge prism (20 and 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 Location
We look forward to seeing you at 12:00 noon. on Monday, March 25th at: Oregon State University Richardson Hall, room 107 3180 SW Jefferson Way Corvallis, OR 97331

Campus Map can be found at: https://map.oregonstate.edu/

Parking on Campus
Visitor permits are required Monday - Friday, 7:00 a.m. - 5:00 p.m. Visitor permits are $4.00 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. OSU uses a virtual parking permit system that is linked to your vehicle license plate number.

Virtual parking permits can be registered at https://aims.parking.oregonstate.edu/ Select visitor permits and be sure to select Daily Visitor Permit – Zone B & C. Choose Date Selection and input the start and end dates.

Once you complete the payment process a confirmation letter will be sent to your email. All vehicles without permits will be ticketed. Parking questions may be directed to 541-737-2583.

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: https://transportation.oregonstate.edu/beaver-bus.

Registration Information
Registration Pricing:

Course Fees
The workshop is currently at capacity. You can be added to the waitlist by using the "Click here to Register button." Spots will only open up if we have cancellations.

Early Bird - for registrations prior to midnight on February 3rd: $795
Regular Registration Pricing - for registrations after 12:01a.m. on February 4th: $950

Course fee includes a light breakfast and lunch each day with a group dinner Thursday evening, lab and field work, and each participant will receive the textbooks listed below:

  • Sampler of Inventory Topics, Kim Iles
  • Log Scaling and Timber Cruising, J. Bell and R. Dilworth
  • Forestry Field Reference Book, Jim Kiser
  • Course Notebook
Lodging Information:

A block of 15 single queen rooms is held at the Hilton Garden Inn on campus – checking in Monday March 25 and out Friday March 29. If you would like to utilize a room in this block, please email Nicole Jacobsen to get a reservation confirmation. Once confirmed, upon check-in, you will need to provide a payment credit card to cover the balance of the stay plus incidentals.

Questions about this conference?