Timber engineering beam upgrades

The series of photographs below is of a project to repair a snapped hip ridge.
The construction of the roof is unusual - there is a series of purlins with no common rafters. Consequently the structural load on the roof was greatly increased.
Total cost of the job was between £600 - £700.

Click on each picture for an enlarged view.

Detail of the crack.

Split has opened by 75 mm, so that hip ridge had dropped out of line by half a metre.

Structural scaffold put beneath hip ridge. Hip ridge jacked up to natural building line.
Series of router cuts made to underside.
Series of 3 steel reinforcement bars were then inserted into the slot.
Before the beam upgrade.

The completed job.
Shutter put over the slot.

Detail, showing holes drilled into the side of hip ridge into which epoxy resins are injected.