Left: Re-establishing a connection from joist to beam - detail
Right: Cleaning, probably the most important aspect of resin repairs.
Specialist Timber Beam Repair Case Study
Cockington Court - continued
click on pictures for a larger view
Left: It wasn't me officer!
Right: Holes drilled from the upper face of the beam through the fissures ready for stitching.
Left: Fissure to the side face.
Right: Fissure to the beam underside.
Left: Additional fissures - detail.
Right: Detail
Left: Overview of cutting works.
Right: Detail
Left: 25mm stell reinforcement bar to be used to connect beam to joist.
Right: Cleaning
Left: Base layer of resin, ready to accept steel bars. Note how much the joist has been pulled out of the beam.
Right: Four 25mm bars installed.
Left: Fully resin bonded connection.
Right: Finished detail.
Left: Unfortunately not very clever but the beam was jacked up until the crack was closed up. It was decided that the beam should not be fully jacked up to a horizontal level as the beam had over a long period of time deflected to a natural curvature.
Right: Fissure repair work showing 25mm high tensile steel needles and 25mm reinforcement horizontal bars.
Left: Detail
Right: Due to the fissures running along the full length of the underside of the beam a supporting timber was used to prevent resin loss.
Left: The supporting timber was covered in bees' wax to the central board section, and a silicon bead to the outer edge. This would prevent the resin adhering to the timber with the silicon preventing resin loss.
Right: Installation
contd ........