This partial list of Building Measurement Industry terms relates to this single standard: STEVENSON SYSTEMS, INC. 1989
The minimum path on a multi-occupant floor necessary for access to and egress from occupant areas, access stairs, escalators and elevators, restrooms, janitor’s closets and water coolers, required areas of refuge, life safety equipment (such as fire hose cabinets and fire extinguishers), and building service and amenity areas (such as building lobbies, building conference rooms, sky lobbies, and the like). Note that base building circulation may differ from actual corridors.
Refers to a space or area with a building that serves two or more buildings within a Campus and is not used exclusively by any one occupant.
Fully-enclosed space in a group of buildings that benefits all the occupants of that group of buildings without being used exclusively by any one occupant. An example might be a HVAC plant that heats and cools all buildings, or a cafeteria or auditorium shared by occupants of a group of buildings.
When multiple buildings share common service areas within a Campus the apportionments of the common services are expressed through a factor or R/U ratio for the Campus which is added to the other R/U ratio to determine the total Rentable Area of each tenant or occupier with in a building . (Also referred to as a Floor R/U Ratio or Multi-building R/U Ratio, Building R/U Ratio, and Multi floor R/U Ratio)
A portion of occupant area that is located outside the physical enclosing walls of an occupant’s premises and between it and the hypothetical or multi-occupant corridor. The corridor extension may not be permanent and may change as the number of occupants on a floor changes. The area occupied by a door setback is included in the adjacent area it serves and may not be a part of the corridor, see definition for Door Setback.
Any part of any corridor that extends beyond the minimum or optimum corridor established. Corridor extensions may fluctuate to satisfy the different requirements of tenant access and building code requirements. In most cases, the area is apportioned as Usable Area to those specific tenants causing the extension.
The Rentable Area currently assigned to a tenant as it appears on the current lease agreement. The Current Leased area may or may not be the actual Rentable Area of the space.
A recess in a wall, containing a door that provides access to or egress from an occupant area, amenity area, or service area, for the purpose of allowing the door to swing in the direction of egress without obstructing circulation in the adjacent area.
A projection that may be beyond the exterior walls of a building that represented the furthest outward projection of the building. Usually determined by floors or projections above the first floor or projected roof structure.
Includes all areas the are related to the electrical operations of the building including electrical rooms, switch gear rooms, etc.
Enclosed areas that are for the use, accessed by and maintained for the benefit of the occupants that are not recognized as Rentable Area. These areas may include but are not limited to overhangs, structured parking, occupant storage, crawl space, trapped areas, low headroom areas, interstitial space, etc.
This is a factor that represents the total amount of Floor Common, Multi-Floor Common and Building Common Areas equally apportioned to all floors of similar office type regardless of their size or design.
This is a factor that represents the total amount of Floor Common, Multi-Floor Common and Building Common Areas apportioned to a floor or tenant of similar office types.
The non-rentable and non-usable areas on the floor that are not apportioned to tenants on any floor(s) of the building. Commonly includes void spaces, service areas, and mechanical rooms and the like that are not included within the Usable or Rentable area of the building under the current measurement criteria or standard. These areas or spaces are measured and identified and included as part of the measurement report Floor Non-Use areas may be converted to Building, Floor or Multi-Floor Common areas. in the future if the measurement criteria is changed or different standard of measurement us used.
The total enclosed area of a floor or building measured to the outside surface of the permanent exterior walls of the building or structure or to a predetermined surface, or plane as in the case of overhangs and projections to the outside surface of the building. Gross Construction Area may include areas above, below, or outside boundaries of the building. This area may include other structures separated from the main building that are used by the main building such as the buildings central plant, parking structures, etc. This area may include areas such as penthouse mechanical rooms, basement services, exterior corridors, tunnels, balconies, overhangs, etc. Gross Construction Area is not to be used as Rentable Area except where an entire building is lease by a single occupant.
A systems to manage the ongoing measurements and other lease information required by building owners to properly maintain the accounting of building and occupancies. First introduced to commercial real estate by Stevenson systems, Inc. in 1989. This system became a service to quickly responses to occupancy information, calculation changes and drawings as they occur. This system has become a widespread tool and service to assist building owners, property managers and asset managers in keep their occupancy information up-to-date throughout the life-cycle of their building(s).
A name of a type of space or area that is shared or provide service to multiple (but not all) floors of a single building. A “Multi-Floor Service Share” is that portion of “Multi-Floor Common/Service” area that is allocated to the occupants of the different floors that uses or share the area.
The sum of Usable Area & Floor Service Share for a particular suite or area.
Enclosed space usable for personnel, furniture, equipment and office support areas, which has suitable finishes, lighting, environmental controls, power, communications support and ceiling heights.
A term developed by Stevenson Systems, Inc., to describe the minimum legal path necessary for access to and egress from occupant areas, service areas stairs, escalators, elevators, and the like. Similar to BOMA’s 2010 definition of “Base Building Circulation”.
The Optimum Corridor is a measurement and mathematical method used to establish the load factors for a multi-tenant occupancy. The Optimum Corridor are established with minimum length (example: connecting the exit stairs) for normal egress and ingress to suites or occupant areas and include optimum width (example: 5’). This optimum configuration of length and width is generally established at the time of the buildings first occupancy by the building owner/manager and architect/tenant planner. Once the building has established the Optimum Corridor it is applied on all floor of the building. If floors are not able to comply with the Optimum Corridor configuration due to current tenant or occupant locations, the as-built corridor configuration on those floors will be used for load factor calculations.
A term used to describe the result of subtracting Major Vertical Penetrations from Gross Measured Area on a floor. This is different than the Rentable Area of the floor, which may include a pro-rata portion of other Common Area.
Once the Rentable on a floor has been established it is “fixed” (not to change). The floor factor will therefore change to compensate for any changes to the corridor size (length & width) that affects the Usable area of the floor. With the factor changes to compensate for the changes in Usable area, the Rentable of the floor will be maintained at a fixed square footage.
Fully-enclosed space that is available for the exclusive use of a building occupant for personnel, materials, furniture, fixtures and equipment. Different standards measure this in different ways. Referred to in leases as The Premises.