Please note that the method shown is schematic only. The number of holes the size and the length of the dowels is determined by engineering calculation for which the following information is required:

Length and section size of the new timber to be installed
Timber species and moisture content
Length and section sizes of the full beam
Current and anticipated loading

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1. Modified Flitch and upgrade of Beams (TYPE A)

2. Compression and Tension zone Upgrading (TYPE B)

3. Improving Effective Span: Depth Ratio (TYPE C)

4. Tension Compression Zone Upgrading -- Top Access only (TYPE D)

5. Upgrading Glulam Beams (TYPE E)

6. Beam End Repair

7. Modified Tenon

8. King Post Truss

9. Repair/Restoration of Wall Plates

10. Repair to Beams or Joints Above Decorative Ceilings

11. Bonded-in Dowel Joints

12. Bonded-in Plate Joints