2007 Project of the Year: Restoration Project

Project: Squatters Pub
Owner: Peter Cole & Jeff Polychronis
Architect: Chuck Allred, MJSA
General Contractor/Masonry Contractor: Layton Construction
Material Supplier: HJ3 Composite Technologies
Restoration: Cold Sweep

Squatters Pub is a restaurant and micro-brewery housed in a three story masonry building in downtown Salt Lake City, Utah. The establishment is a centerpiece of the revitalization effort in the downtown area. The owners of Squatters Pub wanted to restore and remodel the second and third stories of the three story building to add more dining space. To meet current codes (FEMA 356), the building required strengthening to the outside and interior masonry walls. In addition, the interior walls of the second and third floors of the building were exposed to severe fire damage and were considered structurally unstable. Finally, the client required that any restoration system must maintain the historical look and feel of the interior masonry walls.

Alternative repairs involved coring of the walls to insert vertical steel rebar to offer flexural strengthening while maintaining the aesthetics of the interior brick. This alternative repair, however, cost 50% more than bonding HJ3's patented (#5,640,825) high strength carbon fiber and glass fibers to the exterior and interior walls to create sufficient tensile reinforcement of the masonry walls.

Surface Preparation
The first step of the repair involved utilizing dry ice to clean the fire damage from the interior masonry walls. This innovative approach served to clean the interior to reveal the true color of the masonry brick without damaging the brick surface or the mortar joints.

Interior Strengthening of Masonry Walls
After surface preparation, HJ3 strengthened the interior brick walls using a newly developed translucent glass fiber system, named G-Trans. The G-Trans material consists of high tensile strength glass fibers in a UV resistant polymer matrix. Once installed, the system creates a translucent layer to draw out the aesthetic look and feel of the masonry. Alternative glass systems create a milky appearance on the surface of the wall concealing the look and feel of the brick masonry.

Exterior Walls
After restoring the interior masonry walls, HJ3 repaired the exterior walls with a high strength carbon fabric system. The carbon fiber system was used to panelize the exterior brick, creating the necessary flexural strengthening and shear strengthening. The carbon fiber was designed to contour the curvature of the exterior windows, while properly transferring forces to the interior walls. The surface of the carbon fiber was then painted to its initial color with two coats of grey architectural paint.

HJ3 was able to develop a new translucent reinforcing system to strengthen the internal masonry walls while maintaining the aesthetic look and feel of the brick. The bricks were brought back to original condition by removing the fire damage with an innovative surface preparation system that involved dry ice. In the end, HJ3 saved the client considerable money by using innovative materials and installation methods.