Issue link: http://read.uberflip.com/i/1169925
32 / SEPTEMBER.OCTOBER.2019 USICERINKS.COM 5 . The existing rink floor was removed by first breaking it up with a drop-hammer. A more common method is to sawcut the floor into sections and remove them whole. 6 . After the concrete was broken up, equipment was used to lift the 1-inch steel pipes and rebar out of the concrete. floor slab was visibly lifted higher than the perimeter concrete around the slab, primarily in the area where the main cooling pip- ing enters the rink. In 2016, a consultant was brought in to conduct an evaluation of the Akervik Rink floor to try to determine the cause of the issue. After reviewing building plans and conducting an on-site walkthrough, it was explained that the most likely cause was storm water drainage from the adjacent O'Brien Rink sloped roof being deposited into a narrow area between the two-rink buildings. Because heat and moisture want to move to the coldest point it made sense that this moisture was then most likely following the cooling mains which ran underground through the opening between the buildings. Moisture would then follow the cooling mains out under the rink floor, creating frost in the ground and lifting the floor. THE JOB Once this was determined, a significant remodel of the Akervik Rink was planned which would address the rink floor, storm water drainage between the two buildings, and also replace inadequate locker rooms in the space. The design process started in the summer of 2018, and the remodel project began in the spring of 2019. The Akervik Rink was the main focus, but concept plans were also created for future improvements to other areas of the facility. Ice was already up and running for the season in the Akervik Rink at the time the design process started, and the schedule was too busy to allow for soil borings through the rink floor with the ice in. Further, the exist- ing floor had steel pipes, and soil boring equipment could not fit between the pipes without cutting large sections out com- pletely. There simply wasn't enough time to do this with the ice already in for the season. Significant frost removal was anticipated as part of the design process for the project, so this made for some creative bid and specification writing to ensure competitive pricing on frost removal. Project funds were tight so additional desired improvements that were designed as alternates included adding showers and bathrooms to fill the space between the buildings, thereby permanently eliminating the storm drainage issue and addressing the lack of an important locker room amenity. Other design items included new bleachers, a complete repainting of the interior of the building shell, new rubber flooring, a mezzanine viewing area above the locker rooms, and creation of a referee room which did not previously exist in the space. Soil borings were completed immediately after the rink floor was removed once the project began. The frost situation turned out to not be as bad as anticipated, so several alternates were added into 5 PIPING PROBLEMS 6 , The most likely cause of the frost heave was storm water drainage.