Download - Principal Repair Methods for Wood
-
8/13/2019 Principal Repair Methods for Wood
1/44
1
rotafix
Principal Repair Methods currently used on in-situ repair/restoration
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
-
8/13/2019 Principal Repair Methods for Wood
2/44
2
rotafix1. Modif ied Flitch and Upgrade of Beam (Type A)
Use Mafell mortiser or electric chainsaw min. 1600 WATT to cut slot
1STAGE 2 3
-
8/13/2019 Principal Repair Methods for Wood
3/44
3
rotafix1. Modif ied Flitch and Upgrade of Beam (Type A)
Break out timber with chisel and vacuum
21 3STAGE
-
8/13/2019 Principal Repair Methods for Wood
4/44
4
rotafix1. Modif ied Flitch and Upgrade of Beam (Type A)
Set in correct number of rods with min. 10 mm spacers
Check for fissures and seal on exterior face
Calculate volume mix and pour structural epoxy grout TG6Allow for de-aeration and top up as necessary
3 NEXT METHOD >>1 2STAGE
-
8/13/2019 Principal Repair Methods for Wood
5/44
5
rotafix2. Modif ied Flitch and Upgrade of Beam (Type B)
(Compression and Tension Zone Upgrading)
Cut slot(s) or chase(s) with router straight flute cutter on shaped cutter.
Vacuum slot(s) or chase(s)
1 2 3STAGE
-
8/13/2019 Principal Repair Methods for Wood
6/44
6
rotafix2. Modif ied Flitch and Upgrade of Beam (Type B)
(Compression and Tension Zone Upgrading)
Inject slot or chase with pre-calculated volume of thixotropic adhesive.
21 3STAGE
-
8/13/2019 Principal Repair Methods for Wood
7/44
7
rotafix
Insert C.F.R.P. plate(s)/slot(s) or rod(s)/chase(s)
Remove excess adhesive
2. Modif ied Flitch and Upgrade of Beam (Type B)(Compression and Tension Zone Upgrading)
31 2 NEXT METHOD >>STAGE
-
8/13/2019 Principal Repair Methods for Wood
8/44
8
rotafix3. Modif ied Flitch and Upgrade of Beam (Type C)
(Improving Effective Span: Depth Ratio)
Cut out slots to correct depth with chain mortiser or chainsaw.
Vacuum clean all chases.
Check for fissures and if necessary seal with TM3 mortar.
1 2 3STAGE
-
8/13/2019 Principal Repair Methods for Wood
9/44
9
rotafix3. Modif ied Flitch and Upgrade of Beam (Type C)
(Improving Effective Span: Depth Ratio)
Inject pre-calculated amount of thixotropic adhesive CB10TSS into the blind chases.
21 3STAGE
-
8/13/2019 Principal Repair Methods for Wood
10/44
10
rotafix3. Modif ied Flitch and Upgrade of Beam (Type C)
(Improving Effective Span: Depth Ratio)
Push F.R.P. or metallic plates into the adhesive using spacers where necessary.
31 2 NEXT METHOD >>STAGE
-
8/13/2019 Principal Repair Methods for Wood
11/44
11
rotafix
4. Modif ied Flitch and Upgrade of Beam (Type D)(Tension Compression Zone UpgradingTop Access only)
2 3 4 5 61STAGE
-
8/13/2019 Principal Repair Methods for Wood
12/44
12
rotafix
4. Modif ied Flitch and Upgrade of Beam (Type D)(Tension Compression Zone UpgradingTop Access only)
2 3 4 51 6STAGE
-
8/13/2019 Principal Repair Methods for Wood
13/44
13
rotafix
4. Modif ied Flitch and Upgrade of Beam (Type D)(Tension Compression Zone UpgradingTop Access only)
2 3 41 5 6STAGE
-
8/13/2019 Principal Repair Methods for Wood
14/44
14
rotafix
4. Modif ied Flitch and Upgrade of Beam (Type D)(Tension Compression Zone UpgradingTop Access only)
2 3 41 5 6STAGE
-
8/13/2019 Principal Repair Methods for Wood
15/44
15
rotafix
4. Modif ied Flitch and Upgrade of Beam (Type D)(Tension Compression Zone UpgradingTop Access only)
2 51 3 4 6STAGE
-
8/13/2019 Principal Repair Methods for Wood
16/44
16
rotafix
4. Modif ied Flitch and Upgrade of Beam (Type D)(Tension Compression Zone UpgradingTop Access only)
2 3 61 4 5 NEXT METHOD >>STAGE
-
8/13/2019 Principal Repair Methods for Wood
17/44
17
rotafix
5. Modif ied Flitch and Upgrade of Beam (Type E)(Upgrading Glulam Beams)
Measure and drill holes from the under side at 30 from horizontal
NB it is essential to use a guide jig.
1 2 3STAGE
-
8/13/2019 Principal Repair Methods for Wood
18/44
18
rotafix
5. Modif ied Flitch and Upgrade of Beam (Type E)(Upgrading Glulam Beams)
Inject pre-calculated amount of thixotropic adhesive CB10TSS into the blind holes
21 3STAGE
-
8/13/2019 Principal Repair Methods for Wood
19/44
19
rotafix
5. Modif ied Flitch and Upgrade of Beam (Type E)(Upgrading Glulam Beams)
Install pre-cut rods into the resin filled holes.
Remove excess adhesive.
Cosmetically finish with wooden plugs or textured wood mortar TM3.
31 2 NEXT METHOD >>STAGE
-
8/13/2019 Principal Repair Methods for Wood
20/44
20
rotafix
6. Beam End Repair
Mark our position of holes with template
Drill holes correct diameter and length
1 2 3STAGE
-
8/13/2019 Principal Repair Methods for Wood
21/44
21
rotafix
6. Beam End Repair
Install calculated volume of thixotropic adhesive Timberset, or CB10TSS,
or CB10T to rear of drilled hole using extension tube.
31 2STAGE
-
8/13/2019 Principal Repair Methods for Wood
22/44
22
rotafix
6. Beam End Repair
Rotate/push rods into adhesive, check holes are 100% full.
Leave to cure.
Remove supports.
31 2 NEXT METHOD >>STAGE
-
8/13/2019 Principal Repair Methods for Wood
23/44
23
rotafix7. Modif ied Tenon
Mark out position with template
Cut slot with drill stitching technique or chain mortiser
Vacuum slots
Cut and dry fit plate -- Remove
1 2 3 4STAGE
-
8/13/2019 Principal Repair Methods for Wood
24/44
24
rotafix7. Modif ied Tenon
Inject calculated volume of thixotropic adhesive
3 41 2STAGE
-
8/13/2019 Principal Repair Methods for Wood
25/44
25
rotafix7. Modif ied Tenon
Fix plate one side
41 2 3STAGE
-
8/13/2019 Principal Repair Methods for Wood
26/44
26
rotafix7. Modif ied Tenon
Fix second component and support joint
Leave to cure
41 2 3 NEXT METHOD >>STAGE
-
8/13/2019 Principal Repair Methods for Wood
27/44
27
rotafix 8. King Post Truss
Prop int position
Drill holes through both components
2 31STAGE
-
8/13/2019 Principal Repair Methods for Wood
28/44
28
rotafix8. King Post Truss
Inject to back(rear) of composite hole
the pre-calculate volume of thixotropic adhesive
31 2STAGE
-
8/13/2019 Principal Repair Methods for Wood
29/44
29
rotafix8. King Post Truss
Insert and centralise pultruded rods
Seal extension holes according to cosmetic requirements
31 2 NEXT METHOD >>STAGE
-
8/13/2019 Principal Repair Methods for Wood
30/44
30
rotafix9. Repair/Restoration of Wall Plates
1 2 3
Cut out slots to correct depth with chain mortiser or chainsaw.
Vacuum clean all chases.
Check for fissures and if necessary seal with TM3 mortar.
STAGE
-
8/13/2019 Principal Repair Methods for Wood
31/44
31
rotafix9. Repair/Restoration of Wall Plates
Inject pre-calculated amount of thixotropic adhesive CB10TSS into the blind chases.
21 3STAGE
-
8/13/2019 Principal Repair Methods for Wood
32/44
32
rotafix9. Repair/Restoration of Wall Plates
Push F.R.P. or metallic plates into the adhesive using spacers where necessary.
Clean the excessive adhesive from surface.
31 2 NEXT METHOD >>STAGE
-
8/13/2019 Principal Repair Methods for Wood
33/44
33
rotafix
10. Repair to Beams or Joints Above Decorative Ceilings
Soft board support ceiling.
1 2 3STAGE
-
8/13/2019 Principal Repair Methods for Wood
34/44
34
rotafix
10. Repair to Beams or Joints Above Decorative Ceilings
21 3STAGE
-
8/13/2019 Principal Repair Methods for Wood
35/44
35
rotafix
10. Repair to Beams or Joints Above Decorative Ceilings
31 2 NEXT METHOD >>STAGE
-
8/13/2019 Principal Repair Methods for Wood
36/44
36
rotafix
11. Bonded-in dowel Joints
1 2 3 4STAGE
-
8/13/2019 Principal Repair Methods for Wood
37/44
37
rotafix
11. Bonded-in dowel Joints
3 41 2STAGE
-
8/13/2019 Principal Repair Methods for Wood
38/44
38
rotafix
11. Bonded-in dowel Joints
41 2 3STAGE
-
8/13/2019 Principal Repair Methods for Wood
39/44
39
rotafix
11. Bonded-in dowel Joints
41 2 3 NEXT METHOD >>STAGE
-
8/13/2019 Principal Repair Methods for Wood
40/44
40
rotafix
12. Bonded-in Plate Joints
1 2 3 4 5STAGE
-
8/13/2019 Principal Repair Methods for Wood
41/44
41
rotafix
12. Bonded-in Plate Joints
3 41 52STAGE
-
8/13/2019 Principal Repair Methods for Wood
42/44
42
rotafix
12. Bonded-in Plate Joints
41 2 53STAGE
fi
-
8/13/2019 Principal Repair Methods for Wood
43/44
43
rotafix
12. Bonded-in Plate Joints
41 2 3 5STAGE
fi
-
8/13/2019 Principal Repair Methods for Wood
44/44
44
rotafix
12. Bonded-in Plate Joints
2 31 54STAGE-THE END-