One of the most recognizable landmarks in Fort Worth, Texas is One Montgomery Plaza. When it was built in 1928, the eight-floor, Mission-Revival style building served as a regional retail and mail order warehouse for Montgomery Ward. The building originally allowed for trains to come in between its two towers to be unloaded and was the largest building in Texas. It was quickly recognized as an architectural icon. Montgomery Ward’s building was constructed in a bygone era with large, sweeping windows, 12-inch thick concrete walls and a certain majesty that’s hard, if not impossible, to capture today. The construction featured reinforced concrete with 20-foot centered columns throughout. In some areas, two- to three-story wing additions were built, each designed to have five more floors added at a future date. The structure was built to last, surviving the Fort Worth flood in 1949 that reached its second floor and the Fort Worth tornado in 2000. Montgomery Ward rolled up their operations in 2001, and in 2004, the building was sold and eventually converted into luxury condos and retail space, where the building’s original art deco style was preserved. On the 3rd floor roof of One Montgomery Plaza is a 66-foot pool and adjoining spa. In 2018, the waterproofing membrane between the structural slab and the topping slab failed. Water damage caused a 20 percent failure in the structural steel below the slab and in the planter anchors. General Contractor (GC) J. Reynolds, Inc. was hired to remove the topping slab and waterproofing, repair the damaged steel and concrete structures, install new waterproofing and a new topping slab and restore the pool and terrace. J. Reynolds hired CSDA member Magnum Sawing and Coring of Irving, Texas to saw cut and remove the topping slab and demo the spa area next to the pool down to its steel structure. Magnum faced four significant limitations on this job: weather, tenants, power and weight. The weather in January and February in Fort Worth can be unpleasant and unpredictable, and this year was no exception. Magnum battled ice and freezing rain and had seven weather- related shutdowns during the 39-day job. The condos and retail space were occupied, and the owners wanted to limit as much as possible any inconvenience to the tenants. Magnum only had access to one stairwell to get tools and personnel to the 3rd floor. This necessitated the use of a crane to hoist heavy equipment to the roof and remove the pieces of concrete and debris. The GC hired a shoring contractor to build a platform so debris could be removed from the jobsite to street level. Another issue was there wasn’t enough onsite power to run Magnum’s equipment, so Magnum brought their own 6500 watt portable generators to power their multiple saws, core drills, jackhammers and custom built Wet Vacs. Since they were working on a roof, there was a strict weight limit. The typical heavy equipment couldn’t be used. A Bobcat S-70 loader was light enough to place on the roof and for the crane to hoist it up and down. After drilling twelve 7” diameter test cores with Diamond Products Weka DK 22 Core Bores, Magnum determined that sawing was the best way to remove the slab. Saw cutting would create less debris, dust and vibration. They also had to consider the 100-year-old structures below the slab, which ruled out the excessive vibrations that robotic hammering would create. The first step was to hand demo the spa. Stihl 16” gas hand saws, Bosch Turbo Brute electric jackhammers and wheelbarrows were used to break up the concrete into pieces and move it off the roof. In some areas...