Visual Grading Course - INSTA 142 or BS4978

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23–25 November 2026 – Järvamaa Vocational Training Centre, Särevere

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Description of the training

We are pleased to provide you with information on the visual strength grading course INSTA 142 or BS4978.

A three-day practical course in INSTA 142:2009 or BS 4978:2007+A2:2017 for anyone involved in the selection and supply of structural softwood timber. The course concludes with a practical exam, where the participant will be issued with a personal certificate, which allows visual wood strength grading.

Next course: 23–25 November 2026 (INSTA 142)

Venue: Järvamaa Vocational Training Centre (Järvamaa Kutsehariduskeskus), Särevere, Türi Parish, Järva County, Estonia

Trainer: Tiina Hiie (tel +372 526 2171)

Price: €1200 + VAT 24% per participant. The price includes the course, materials and certificate. Discount for companies registering several participants.

Course content and schedule

Day 1, 10:00–16:00 – NCS Estonia OÜ office in Tallinn (Peterburi tee 81) or Järvamaa Vocational Training Centre in Särevere, depending on the participants’ preference

  • Introduction
  • Factors affecting strength
  • Knot formation and cross-section
  • Measuring knots
  • Moisture content
  • Additional rules on dimensions, sawing, planing and cross-cutting
  • Marking
  • Strength classes
  • Identification of wood species
  • Drawing knot projections

Day 2, 9:00–17:00 – Järvamaa Vocational Training Centre, Särevere, construction building
Practical training – grading material into strength classes.

Day 3, 9:00–16:00 – Järvamaa Vocational Training Centre, Särevere, construction building
Summary and exam preparation, further grading practice if needed. Official grading exam.

Training under BS 4978 is available on request.