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top-hardened layer very carefully and slowly. 3. Once you have broken through the top layer, the concrete will be slightly softer and more porous underneath. During a normal concrete floor installation, the refrigeration pipes are put in pipe chairs to keep the pipes approximately 1" below the surface. This does not mean you can just go crazy with the chisel for the first inch because the pipes can move and sometimes come out of the pipe chairs during installation. Depending on where your rink is located geographically in the country, the pipes could be anywhere from 3.5" to 5" apart on center. So, take your time and break the concrete in small pieces on an angle. Do not strike or chip straight down, because if you do strike the chisel extra hard or hit an air pocket, you could slice a refrigeration pipe. Take this step very slowly until you have located and uncovered the refrigeration pipes. Once you have located the pipes, the process becomes a little less stressful. 4. Use the shop vacuum to clean up the broken concrete and dust as you go to keep the site clean. You should always be able to see the refrigeration pipes so that you can avoid damaging them. 5. Continue to chip out the hole between the refrigeration pipes to a depth of approximately 4". This will depend on the exact inserts you have purchased. They should STARRINKS.COM SEPTEMBER.OCTOBER.2014 / 45 » Personal protective equipment — eye and face protection, gloves, work boots, long sleeves and pants. » Concrete chisel. Variety of sizes from 1" to 2" available at most hardware stores. » Good quality hammer available at all hardware stores. » Shop vacuum. » Small level. » Compatible concrete patch. Check with company that installed your floor or rink supply company for proper concrete patch material. Tools Required , Marsh Pegs are available in different colors and sizes. , Continued on page 46 Approximately $400-500 for inserts and pegs for full set of four. FACT: