British Columbia Institute of

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RENR 1601 - Introduction to Log Scaling (Coastal)

Renewable Resources Part-time Studies Course

School of Construction and the Environment

To support you and your education, BCIT is adapting applied learning in formats appropriate to the unfolding global situation. All PTS classes are being delivered in an online format unless you are notified otherwise.

Course Details

This introductory course provides an overview of coastal log scaling. The course is designed to 1) provide the basic knowledge required to pursue further training necessary to obtain a Provincial Coastal Log Scaling licence, and 2) provide background knowledge for people who are working in a related field. A statement of completion (level 1 Log Scaling) will be issued upon successful completion. Included are practical skills for log measurements, volume calculations and the value grading of coastal log species based on the statutory grading system. The scaling equipment is provided, however the student must have caulk boots.


RRRM 1157 and RRRM 1450



This course isn't currently offered through BCIT Part-time Studies. Please check back next term or subscribe to receive email updates.

Learning Outcomes

Upon successful completion of this course, the student will be able to:

  • Appreciate the role of Scaling in BC:
    • Evolution of scaling practices
    • BC Log rule
    • Piece scaling system
    • Weight scaling system.
  • Use a Scale Stick:
    • Measure diameters,
    • Measure slab ends
    • Calculate volumes
    • Compute deductions.
  • Use geometry to calculate areas and volumes:
    • Circles
    • Squares/rectangles
    • Cylinders
    • Cones
    • Frustums (Smalian's formula).
  • Identify common Coastal log species:
    • Bark characteristics
    • Wood density
    • Hardwoods
    • Softwoods.
  • Calculate deductions for common defects:
    • Length deductions
    • Radius deductions
  • Understand timber grading by 'sorts' and associate end products:
    • Lumber logs
    • Peelers
    • Shingle grades
    • Sawlogs
    • Utility.
  • Apply Timber grading procedures:
    • Assess gross and net requirements to meet the grade rule: top diameters, lengths, merchantability, clear.
    • Assess quality requirements to make the grade: knots, spiral grain (twist), grain density, stain.
    • Assess product recoverability and apply grade reduction: fractures and fibre separations; bark seams; sweep, crook and pistol grip; rot, hole, char and missing wood.

Effective as of Spring/Summer 2017


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