1. a) a gas-permeable layer installed in the space between the air barrier and the ground to allow the depressurization of that space,
2. an inlet that allows for the effective depressurization of the gas-permeable layer, and (See Note A-9.13.4.3.(2)(b) and (3)(b)(i)
3. an outlet in the conditioned space that

1.  permits connection to depressurization equipment,
2. is sealed to maintain the integrity of the air barrier system, and
3. is clearly labeled to indicate that it is intended only for the removal of radon from below the floor-on-ground.

1. a) clean granular material installed below the floor-on-ground in accordance with Sentence 9.16.2.1.(1), and
2. b) pipe not less than 100 mm (4″) in diameter installed through the floor, such that

1.  its bottom end opens into the granular layer required in Clause (a) at or near the centre of the floor and not less than 100 mm (4″) of granular material projects beyond the terminus of the pipe measured along its axis,
2.  its top end permits connection to depressurization equipment and is provided with an airtight cap, and
3. the pipe is clearly labeled near the cap and, if applicable, every 1.8 m and at every change in direction to indicate that it is intended only for the removal of radon from below the floor-on-ground.

Location of Carbon Monoxide Alarms 9.32.3.9.A

4) In addition to the carbon monoxide alarms required to be installed in a suite of residential occupancy in accordance with Sentence (2), a carbon monoxide alarm shall be installed in each sleeping room within the suite where the sleeping room

a) contains a fuel-burning appliance or a flue, or

b) shares a common wall or floor or ceiling assembly

1. with a room, suite or area that is located outside the suite and contains a fuelburning appliance or a flue,
2.  with a storage garage, or
3. that is adjacent to an attic or crawl space to which the storage garage is also adjacent.

Installation and Conformance to Standards – 9.32.3.9C

1) The carbon monoxide alarms required by Articles 9.32.3.9A. and 9.32.3.9B. shall

a) be permanently connected to an electrical circuit

b) be provided with a battery as an alternative power source

c) be wired so that

1. activation of one carbon monoxide alarm…will activate all carbon monoxide alarms within the suite,
2. activation…within a house with a secondary suite will activate all carbon monoxide alarms within the house with a secondary suite including their common spaces, and
3. activation of one carbon monoxide alarm located in a public corridor serving suites of residential occupancy will activate all carbon monoxide alarms within the corridor.

d) be audible within sleeping rooms when the intervening doors are closed, where located adjacent to a sleeping room in a suite of residential occupancy, and

e) conform to
i. CAN/CSA-6.19, “Residential Carbon Monoxide Alarming Devices,” or

ii. UL 2034, “Single and Multiple Station Carbon Monoxide Alarms.”

3) Except as permitted in Sentence (2), the carbon monoxide alarms required by Articles 9.32.3.9A. and 9.32.3.9B. shall have a visual signalling component conforming to the requirements in 18.5.3. (Light, Color and Pulse Characteristics) of NFPA 72, “National Fire Alarm and Signaling Code”.

5) The visual signaling component required by Sentence (3) need not

a) be integrated with the carbon monoxide alarm provided it is interconnected to it,

b) be on battery backup, or

c) have synchronized flash rates, when installed in a dwelling unit.