The ada provides two ways to make operable parts accessible to wheelchair users.
Fire pull station height.
Not less than 2300 mm above the floor where ceiling heights allow measured to the centre of the device.
Nfpa 72 the national fire alarm and signalling code requires the operating switch of manual pull stations to be located between 42 and 48 inches from the floor.
1200 1400 mm above the floor measured to the centre of the manual station the centre of the back box 1050 1150 mm above the floor measured to the centre of the manual station the centre of the back box audible signalling appliance.
Manual fire alarm boxes mounted with the top of the back box at 48 inches will generally satisfy both sets of requirements and complies with section 2 8 1 of nfpa 72.
In a forward reach the wheelchair user approaches the object head on.
Manual pull stations 1 except as permitted by sentences 2 and 3 if a fire alarm system is installed a manual pull station shall be installed a near the principal entrance to thebuilding and b near every required exit.
2 in a building that is sprinklered a manual pull station is not required at an exterior egress.
Manual fire alarm boxes shall be red in color.
Manual fire alarm boxes pull stations the height of the manual fire alarm boxes shall be a minimum of 42 inches and a maximum of 54 inches measured vertically from the floor level to the activating handle or lever of the box.
Another important aspect associated with device placement involves the height at which it must be mounted.
In this case height is measured from the floor to the operable part of each manual fire alarm box according to section 5 13 4 of nfpa 72 2007 edition mounting height must be between 3 and 4 feet from floor to handle.
Below we have an picture of a typical manual pull station.
The ontario building code manual pull stations 3 2 4 18.
Through a forward reach or a side reach.
Sections 22 3 4 2 and 23 3 4 2 of nfpa 101 require fire alarms to initiate manually as well as by any detection devices that may be required in other parts of the code.