For the first project, Western crews restored the parking structure, located on the back side of the building. With the main level of the garage and its suspended deck completely enclosed, the total floor space per level was approximately 10,000-square-feet.
The garage exhibited damage to its concrete decking in the form of spalling and cracking, and corrosion to its structural concrete members. Western crews performed approximately 3,100-square-feet of full-depth concrete repairs (30 percent of the suspended deck), 550-lineal-feet of structural joist repairs, 55-lineal-feet of structural beam repairs, removal of 1,500-square-feet of asphalt topping on the upper level and installation 825-lineal-feet of gravity-fed epoxy injection.
Western crews installed shoring to support the concrete areas that were not to be removed during the restoration process. The shoring also acted as the support framework for the form work and false floor that had to be used for fall protection.
In order to keep the garage operable for tenants, Western crews performed the garage repairs in three phases. In the first phase, new concrete was installed using a concrete pump. In the second and third phases, new concrete was placed using a concrete buggy to move material through the garage. Once the concrete repairs were completed, Western crews applied a two-component traffic membrane on the elevated parking level. The garage restoration project was completed in four months.
For the second project, Western crews performed masonry restoration on the façade of the building. Crews performed necessary tuckpointing throughout the building and replaced over 5,000 spalled and broken bricks, which were mainly at the shelf angles. Western crews also installed new weeps along all of the shelf angles to allow water that may have penetrated the wall to drain out. Workers then re-sealed all of the shelf angles with a silicone sealant. Western crews also sealed around all newly installed windows, using a Dow Corning silicone sealant.
Due to the building having a lot of ins and outs, Western crews were required to change the sizes of the swing stages often during the masonry restoration project.
“Access was difficult since there were lower roof areas that were not connected all the way around, so we had to move the stages up and down off the roof levels as we went around the entire building,” says Western Springfield Branch Manager Scott Haas. “Roof anchors needed to be installed in order to tie back the swing stages properly.”