Alterations to Existing Buildings
Acceptable Solution #2 - Using New Upgrade Mechanisms
» Background
» Definitions for Categories of Work
» Procedure for Using New Upgrade Trigger Model
» Rehabilitation Projects (Flow Chart #1)
» Change of Use Projects (Flow Chart #2)
» Change of Major Occupancy Projects (Flow Chart #3)
» Addition Projects (Flow Chart #4)
» Table of Upgrade Levels (Objectives & Acceptable Solutions)
» Hazard Index Tables
Table of Upgrade Levels (Objectives & Acceptable Solutions)
| Category | Objective Statement | Acceptable Solution |
| F1 | Exiting to be reviewed to ensure that the exits do not present an unsafe condition. | Project Area - Exits to be upgraded with respect to number, capacity, and fire separations only. |
| S1 | Proposed work must not have an adverse effect on the structural capacity of the existing structure. | Entire Building - Proposed work must not reduce the structural integrity of the existing building. |
| A1 | The proposed work must not adversely affect the existing accessibility level of the building. | Project Area - Existing level of accessibility must be maintained throughout the project area. No additional accessibility enhancements are required. |
Notes:
F1 = Level One Fire, Life and Health Safety upgrade.
S1 = Level One Structural upgrade.
A1 = Level One Accessibility upgrade.
| Category | Objective Statement | Acceptable Solution |
| F2 | Existing building to meet the fire & life safety requirements of the Building By-law within the project area and have conforming exits leading from the project area to an acceptable open space. | Project Area - Alarms and detectors (only where existing devices are provided), emergency lights, access to exit, exits, exit signs, and exit lights. Public Area (leading from project area to an acceptable open space) - emergency lights, exit signs, access to exit, exits, and flame spread ratings. |
| S2 | Limited structural upgrade required in order to provide minimum protection to building occupants during a seismic event within the project area. | Project Area - Non-structural elements and falling hazards must be restrained to resist lateral loads due to earthquakes within the project area. |
| A2 | A limited level of upgrade shall be provided within the project area to ensure access for persons with disabilities. | Project Area - door clearances, door hardware, and areas of refuge. |
Notes:
F2 = Level Two Fire, Life and Health Safety upgrade.
S2 = Level Two Structural upgrade.
A2 = Level Two Accessibility upgrade.
| Category | Objective Statement | Acceptable Solution |
| F3 | Existing building to meet fire, life & health safety requirements of the Building By-law within the project area. Existing building to meet fire and life safety requirements of the Building By-law within the public areas. | Project Area - Alarms & detectors (only where existing devices are provided), emergency lighting, access to exit, exits, exit signs, exit lights, flame spread ratings, floor assemblies & supports, occupancy separation, standpipes and sprinklers, washrooms. Public Area - Alarms & detectors (only where existing devices are provided), emergency lighting, access to exit, exit, flame spread ratings, occupancy separation, exit signs, and exit lights. Entire Building - Fire fighting access. |
| S3 | The building structure shall be upgraded to an acceptable level in order to provide a minimum level of property and life safety to unreinforced masonry or other buildings having less than 30 percent of the current required seismic resistance. Falling hazards over exits and sidewalks must be addressed. | Entire Building - Bolting floor and roof structure to bearing walls and strengthening of floor and roof diaphragms as required to safely distribute lateral forces to bearing walls (i.e., Bolts Plus) All falling hazards such as cornices, parapets and awnings located above exits and sidewalks must be restrained to resist forces due to a seismic event. |
| A3 | The existing building shall be upgraded to an acceptable level in order to ensure complete access within the project area as well as access to the remainder of the building. | Project Area - Door clearances, door hardware, accessible washrooms, and areas of refuge. Public Area - Door clearances, door hardware, areas of refuge, washrooms, ramps, and elevators. |
Notes:
F3 = Level Three Fire, Life and Health Safety upgrade.
S3 = Level Three Structural upgrade.
A3 = Level Three Accessibility upgrade.
| Category | Objective Statement | Acceptable Solution |
| F4 | Entire building to substantially meet the intent of health, fire and life safety requirements of the Building By-law as well as provide protection to adjacent property. | Entire Building - Alarms & detectors, emergency lighting, access to exit, exits, exit signs, exit lights, flame spread ratings, fire fighting access & water supply, floor assemblies & support, spatial separation, occupancy separation, standpipes & sprinklers, washrooms, high building requirements, lighting levels, sound transmission classifications, ventilation, and building envelope review. |
| S4 | The entire building structure shall be brought up to an acceptable level in order to meet seismic requirements of the By-law. | Entire Building - Building to be upgraded to resist 75 percent of the current By-law specified lateral force levels, where the building is evaluated as having less than 60 percent of the current required seismic resistance. |
| A4 | The existing building shall be upgraded in order to provide the minimum accessibility requirements of the Building By-law. | Entire Building - Building to meet accessibility provisions of the current Building By-law. |
Notes:
F4 = Level Four Fire, Life and Health Safety upgrade.
S4 = Level Four Structural upgrade.
A4 = Level Four Accessibility upgrade.
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