Appendix D - Prescribed Measures to Address
Aircraft Noise

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12.6    Introduction

The following prescribed measures to mitigate the impact of aircraft noise on residential communities proposed between the 25 NEF/NEP and the OAOIZ have been prepared for the guidance of landowners and residential developers and builders, for implementation by the affected municipalities. These measures include the components of building design necessary to meet the Ministry of Environment and Energy's indoor noise criteria for aircraft noise (LU131 dated October 1997); the ventilation requirements; and the warning clause required to address aircraft noise. The prescribed measures pertain to typically built track housing in this Region, for low to medium-rise residential units. They may be used for residential development of this nature, in lieu of an aircraft noise study. If the prescribed measures are selected as the mechanism for addressing aircraft noise, they will apply to all residential units between the 25 NEF/NEP and the OAIOZ, regardless of the contour location. They are based on the minimum requirements for the 30 NEF/NEP contours.

The developer/builder may opt to conduct an aircraft noise impact assessment rather than following the measures outlined herein.

The prescribed measures do not apply to high-rise apartment type dwellings, nor to other noise-sensitive development such as schools, hospitals, homes for the aged, or other such similar facilities. The prescribed measures are not to be used for commercial development or for any potential infilling of residential land use within the OAOIZ. In the above-noted cases, approval of the proposed development would be conditional to the completion of an aircraft noise study to determine the requirements on a case by case basis.

It is the responsibility of the landowner/developer/builder to ensure compliance with the prescribed measures. Where there is any deviation from the assumptions used to calculate the acoustical building components identified (for example, an increase in the ratio of window area to total floor area, or exterior wall to floor area) or if changes are proposed to the prescribed measures, a reassessment of building components is necessary, as well as certification by a qualified acoustical consultant demonstrating compliance with the Ministry of Environment and Energy's indoor noise criteria for aircraft noise (LU131, dated October 1997). These measures are to be used in relation to aircraft noise associated with flyover activities. A separate assessment may be required for ground based noise, depending on the location of the proposed development in relation to the Airport.

If the proposed development is potentially affected by other noise sources (road and/or rail), a separate assessment must be conducted to determine the combined impact and the noise attenuation features required in building design.

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Prescribed Measures - Building Components

1. Exterior Walls

Wall Components	Percentage of Exterior Wall Area to Total Floor Area of Room (% maximum)
. 12.7 mm gypsum board; . vapour barrier; . 38 mm x 139 mm studs at 400 mm o.c.; . battlblown insulation in the inter-stud cavities; . 7.9 mm exterior sheathing; . building paper; . wood siding; vinyl siding; or metal siding with fibre backer board; or 20 mm stucco. or	Bedrooms (110 %) Living / Dining (150%)
With the same exterior wall construction and the mounting of the interior gypsum board on resilient chips/channels, the percentage of exterior wall area to floor area can be increased	All Rooms (160%)

 

2. Windows and Patio Doors:

Window and Patio Door Components	Percentage of Window Area to Total Floor Area of Room (% maximum)
Double-glazed, well-fitted, weatherstripped units with dimensions to fit 25 mm [ie. 4 (16) 4; 6 (13) 6 ]	Bedrooms  (16 %)
4 (16) 4 = 4 mm glass, 16 mm space, 4 mm glass.	Living / Dining  (40%)
Double-glazed, well-fitted, weatherstripped units with dimensions to fit 25 min [ie. 3 (16) 6].	Bedrooms (20 %) Living / Dining (50%)
Family rooms, breakfast nooks and similar rooms are included in the living-dining classification for the purpose of window/patio doors. If the percentage of window area to floor area is to exceed 20 in the case of bedrooms, and/or 50 in the case of dining and/or living rooms, a certification from the acoustical consultant will be required.

 

3. Roof - Ceiling
   • asphalt shingles;
   • sheathing;
   • typical (pre-engineered) wood trusses at 600 mm o.c. with ventilated attic;
   • 75 mm (or thicker) battslblown insulation;
   • vapour barrier;
   • 12.7 gypsum board.

 

4. Exterior Doors
   • 44 mm steel door with foam or glass fibre/polyurethane insulated core (dining-living rooms) with unlimited glazing; or
   • 44 mm glass fibre reinforced plastic door with foam or glass fibre insulated core (up to 20% of area glazed) (kitchens).

 

Prescribed Measures - Ventilation Requirements

Forced air heating system with the fans, ducts, etc. sized to accommodate the installation of a central air conditioning system.

Prescribed Measures - Warning Clause

Purchasers/building occupants are forewarned that this property/dwelling unit is located in a noise sensitive area due to its proximity to Ottawa Macdonald-Cartier International Airport. In order to reduce the impact of aircraft noise in the indoor spaces, the unit has been designed and built to meet provincial standards for noise control by the use of components and building systems that provide sound attenuation. In addition to the building components (ie. walls, windows, doors, ceiling-roof), since the benefit of sound attenuation is lost when windows or doors are left open, this unit has been fitted with a forced air heating system, all components of which are sized to accommodate the future installation of central air conditioning-by the owner/occupant.

Despite the inclusion of noise control features within the dwelling unit, noise due to aircraft operations may continue to interfere with some indoor activities and with outdoor activities, particularly during the summer months. The purchaser/building occupant is further advised that the Airport is open and operates 24 hours a day, and that changes to operations or expansion of the airport facilities, including the construction of new runways, may affect the living environment of the residents of this property/area.

The Ottawa Macdonald-Cartier International Airport Authority, its acoustical consultants and the Municipality are not responsible if, regardless of the implementation of noise control features, the purchaser/occupant of this dwelling finds that the indoor noise levels due to aircraft operations continue to be of concern or are offensive.

Prescribed Measures - Implementation

The building components and details regarding ventilation must be clearly identified on the drawings/plans submitted to the municipalities at the time of application for building permits. Certification by a registered architect and/or a professional engineer of compliance with the Prescribed Measures is required.

The warning clause will be included in all subdivision agreements and/or development agreements, and all Offers of Purchase and Sale and/or lease agreements.

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