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BCC Ruling No. 95-61-481

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BUILDING CODE COMMISSION DECISION ON B.C.C. #95-61-481

IN THE MATTER OF Subsection 24(1) of the Building Code Act, 1992.

AND IN THE MATTER OF Sentence 3.11.8.1.(15) of the Revised Regulation of Ontario 1990, Regulation 61, as amended by O.Regs. 400/91, 158/93, 160/93, 355/94 and 20/95 (the "Building Code").

AND IN THE MATTER OF an application by Mr. John Tomkin, Bracebridge Camping & Trailer Park, Bracebridge for the resolution of a dispute with Mr. Randy Gardner, Chief Building Official, Town of Bracebridge, concerning whether reducing the flow of the recirculation system to 3 litres per second (l/s) when the pool is being used and then increasing the flow rate of three times the pool volume in 24 hours in lieu of providing two or more drains will provide sufficiency of compliance with Sentence 3.11.8.1.(15) of the Building Code, at Bracebridge Camping and Trailer Park, R.R. #4 (Beaumont Drive), Bracebridge, Ontario.

APPLICANT

Bracebridge Camping & Trailer Park
Bracebridge, Ontario

RESPONDENT

Mr. Randy Gardner
Chief Building Official
Town of Bracebridge

PANEL

Mr. Roy Philippe, Chair
Mr. Sang Shim
Mr. Rick Florio

PLACE

Toronto, Ontario

DATE OF RULING

December 21st, 1995

APPEARANCES

Mr. John Tomkin
Bracebridge Camping & Trailer Park
Bracebridge, Ontario
The Applicant

Mr. Michael Gooch
Building Inspector
Town of Bracebridge
For the Respondent

RULING

  1. The Applicant

Mr. John Tomkin, Bracebridge Camping & Trailer Park is the holder of a permit under the Building Code Act, 1992 to construct a public pool at the Bracebridge Camping & Trailer Park, Bracebridge, Ontario.

  1. Description of Constrution

The subject public pool is a Class B pool with a water volume of 26,500 US gallons (102025 litres). It is provided with a Hayward circulation kit consisting of a 24 inch sand filter and a 1« HP pump.

The public pool has a constant water depth of 4 feet (1.22 m) and is provided with only one main drain. The circulation system flow rate is more than 3 l/s.

The pool is completely installed, backfilled, raked and ready for sod or grass seed.

  1. Dispute

The dispute between the Applicant and Respondent concerns sufficiency of compliance with the technical requirements of Sentence 3.11.8.1.(15) of the Building Code. The Applicant proposes to reduce the flow rate of the recirculation system to 3 l/s when the pool is being used and then increase the flow rate to three times the pool volume in 24 hours in lieu of providing two or more drains.

  1. Provision of the Building Code

Sentence 3.11.8.1.(15) Recirculation and Vacuum Systems

  1. Except as provided in Sentence 3.11.6.1.(7) for a modified pool, where a public pool has a recirculation system flow rate of more than 3 l/s (0.66 gal/s), the pool shall

    1. be provided with two or more main drains separated by not less than 1.2 m (3 ft 11 in), and

    1. be capable of being emptied through the drains in twelve hours or less.

  1. Applicant's Position

The Applicant proposed to reduce the flow rate to meet the maximum permitted rate of 3 l/s during the day when the pool is in use, and increase the flow to a maximum of 4 l/s during off-time use.

The Applicant submitted that the flow rate of 3 l/s for 11 hours and 4 l/s for 13 hours would result in the volume of water in the pool being exchanged three times during a 24 hour period, which is required by the Building Code.

The Applicant submitted that this proposal would address the potential danger of someone's hair or other portion of their body being sucked into the main drain causing bodily harm.

The Applicant provided calculations showing the amount of water filtered over various times at various rates. The sum total of the maximum flow rate for 11 hours and the maximum flow rate for 13 hours is within a few litres of the volume of the pool, 102,025 litres by three.

  1. Chief Building Officials Position

The Respondent submitted that the public pool has been constructed with only one main drain and the recirculation system flow rate is more than 3 l/s. It is approximately 3.5 l/s.

The Respondent submitted that he cannot accept the proposal submitted by the Applicant because it does not comply with Sentence 3.11.8.1.(15) of the Building Code. The reduction of the flow rate by moving valves and observing the flow meter appears to allow a great deal of human error where life safety is concerned.

  1. Commission Ruling:

It is the decision of the Building Code Commission that reducing the flow rates during operating hours to 3 l/s and increasing the flow rate during periods when the pool is closed and secured to approximately 4 l/s does not provide sufficiency of compliance with Sentence 3.11.8.1.(15) of the Building Code.

  1. Reasons:

  1. Unattended use may occur during off hours when velocities in excess of the Building Code requirements for main drains are present.

  1. Acceptance of a reduced flow to 3 l/s does not satisfy the recirculation system requirements of Sentence 3.11.8.1.(5) of the Building Code.

  1. Proposed Building Code amendments by the Public Pool Task Force exceed present Building Code values as noted below:

i. Sentence 3.11.8.1.(5) - Increase the turnover for a Class B pool from 3 to 4 times the pool's water volume every 24 hours (from 8 to 6 hours).

ii. Sentence 3.11.8.1.(15) - Eliminate one main drain requirement for a recirculation system of 3 l/s, so each public pool has to be provided with at least 2 main drains.

Dated at Toronto, this 21th day, in the month of December, in the year 1995, for application number 1995-66.

Roy Philippe

Sang Shim

Rick Florio