In 1998 Canton experienced a heavy snow storm. In 2006, maintenance personnel noticed that the cracks had propagated and opened further. Following another inspection, an attempt was made to repair the most heavily split arch frame using lag screws inserted from the bottom of the arch. But new splits occurred after the lag screws were installed near the tops of the new lags so a second attempt was made to close the splits using steel angles and an HSS section to clamp the arches.
These attempts proved unsuccessful so the College began exploring the cost to demolish the building. Initial demolition estimates were in the vicinity of $2.3 million. But before the final decision was made to demolish the building, the College decided to make one final attempt to repair the Glulam frames. An internet search led them to Western Wood Structures who was hired to perform an inspection, complete a structural analysis, and make recommendations for a permanent solution.
The College decided to accept Western Wood’s opinion that the frames could be repaired as well as brought to current code and the decision was then made to advertise the job to the general public on a design-build basis. Western Wood turned in a bid and was eventually awarded the contract for just over $1.1 million.
There were four repair and code upgrade methods used by Western Wood Structures to complete the necessary repairs:
1. The frames were post-tensioned due to being over stressed in bending;