Facility Forum - Fall 2016 - 24

AQUATICS WINTERIZING M ost public pools are below grade and constructed of form-poured, steel-reinforced concrete or Gunite over a grid of reinforcing steel. Regardless of the pool mechanical design, winter conditions can cause severe damage to tank interior finishes (paint, grout, plaster, liners, tile bands, coping stone) and any water or moisture left inside pipes can freeze and split them as well as valves and fittings, pump casings, hair strainers, or pressure filter tanks if the water or moisture is within the frost line. Pipe and fitting rupture under concrete and steel decking or beneath several inches of thick concrete at the pool's deep end can be very expensive to repair. Moisture in the soil and fill around a pool and under the decking can produce By Terry Piche, RRFA, CIT, ORFA Technical Director sufficient forces when frozen to collapse the pool walls and lift the pool bottom. Once a floor deflects or a wall shifts, the pool tank integrity is lost forever. For each month of below-zero weather, the frost will penetrate deeper into the ground. In some areas of the country, frost can penetrate up to six feet or 1.8 metres in depth; indeed, in the far north there is permafrost as insufficient warm degree days occur in sequence to remove the frost from the depths. However, across most of the larger inhabited areas of Canada, late October to mid- November is a three-week window of fluctuating temperatures when leaves have all fallen yet nature's pool cover (that is, ice) has not yet formed permanently to close off the dirt and debris that entered the water since the typical Labour Day end-of- season. The fact that ice does not form until late December in many jurisdictions 24 | ONTARIO RECREATION FACILITIES ASSOCIATION suggests that summer parks crews or full time arena staff might well be available to properly clean up the pool interior by raking out leaves, air blowing and drying pipe lines and removing metering pumps, feeders and gauges to heated winter storage locations. Plastic pipe and lines can shrink or expand as much as 6  inches per 100  linear feet (15 cm over 30.5 metres) over a seasonal temperature ranges which clearly dictates using flex couplings or trenches to allow some movement to occur without shearing off wall inlet stubs or cracking drain fittings. Once pool water is properly balanced for user comfort and protection of the components of the pool and recirculation system, the disinfection, filtration and chemical feed systems deal with the introduced contaminants brought into the pool by bathers, wind, rain, or vandals. When a pool is topped up

Table of Contents for the Digital Edition of Facility Forum - Fall 2016

Industry Watch
Home Run Baseball Hits a Pedestrian
All Granites are Not the Same
Technically Speaking
Risk Management – City Found Not Liable in Skating Injury
Winterizing Pools
Member Profile – Ross Rankin, RA Centre, Ottawa
Use of Medical Marijuana at Work Poses Challenges for Employers
Health & Safety (PSHSA) – Radon - Bill 11 Updates
ORFA’s Original Energy Consultant Writes Memoirs
The Difference between Residential and Commercial Gas Detectors
Energy Champion – Beyond Measurement
Index of Advertisers
Facility Forum - Fall 2016 - ebelly1
Facility Forum - Fall 2016 - ebelly2
Facility Forum - Fall 2016 - cover1
Facility Forum - Fall 2016 - cover2
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Facility Forum - Fall 2016 - 8
Facility Forum - Fall 2016 - Industry Watch
Facility Forum - Fall 2016 - Home Run Baseball Hits a Pedestrian
Facility Forum - Fall 2016 - 11
Facility Forum - Fall 2016 - 12
Facility Forum - Fall 2016 - 13
Facility Forum - Fall 2016 - All Granites are Not the Same
Facility Forum - Fall 2016 - 15
Facility Forum - Fall 2016 - 16
Facility Forum - Fall 2016 - 17
Facility Forum - Fall 2016 - 18
Facility Forum - Fall 2016 - 19
Facility Forum - Fall 2016 - 20
Facility Forum - Fall 2016 - Technically Speaking
Facility Forum - Fall 2016 - Risk Management – City Found Not Liable in Skating Injury
Facility Forum - Fall 2016 - 23
Facility Forum - Fall 2016 - Winterizing Pools
Facility Forum - Fall 2016 - 25
Facility Forum - Fall 2016 - 26
Facility Forum - Fall 2016 - 27
Facility Forum - Fall 2016 - 28
Facility Forum - Fall 2016 - Member Profile – Ross Rankin, RA Centre, Ottawa
Facility Forum - Fall 2016 - 30
Facility Forum - Fall 2016 - 31
Facility Forum - Fall 2016 - 32
Facility Forum - Fall 2016 - Use of Medical Marijuana at Work Poses Challenges for Employers
Facility Forum - Fall 2016 - Health & Safety (PSHSA) – Radon - Bill 11 Updates
Facility Forum - Fall 2016 - 35
Facility Forum - Fall 2016 - 36
Facility Forum - Fall 2016 - ORFA’s Original Energy Consultant Writes Memoirs
Facility Forum - Fall 2016 - 38
Facility Forum - Fall 2016 - 39
Facility Forum - Fall 2016 - 40
Facility Forum - Fall 2016 - The Difference between Residential and Commercial Gas Detectors
Facility Forum - Fall 2016 - 42
Facility Forum - Fall 2016 - 43
Facility Forum - Fall 2016 - Energy Champion – Beyond Measurement
Facility Forum - Fall 2016 - 45
Facility Forum - Fall 2016 - Index of Advertisers
Facility Forum - Fall 2016 - cover3
Facility Forum - Fall 2016 - cover4
Facility Forum - Fall 2016 - outsert1
Facility Forum - Fall 2016 - outsert2
Facility Forum - Fall 2016 - outsert3
Facility Forum - Fall 2016 - outsert4
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