As an Architect, I interact with clients, engineers and contractors who have acquired bits of information about Building Codes. Sometimes, those bits are misconceptions and regurgitated information. The building codes can be intimidating and have no beginning or end. To learn the code, the best way is jumping in feet first.
In the next series of blog posts, I will explore common Building Codes. Each City has adopted a code but most in Arizona use the IBC (International Building Code).
The following blog posts are:
The item in bold are addressed in this post. As an Arizona Architect, most City’s jurisdictions work with the IBC (International Building Code). This code analysis is based upon the IBC.
The maximum exit travel distance allowed by code is determined by the ‘Means of Egress’. The basic definition is as follows:
Common Path of Egress Travel – ‘That portion of exit access which the occupants are required to traverse before two separate and distinct paths of egress travel to two exits are available. The exit access is the component which leads you from the occupied portion of the building to an exit.’
Several factors within a building may require a 2nd exit from a space. The two most common triggers are occupancy quantities (ex. exceeding 49 occupants in an office space) or exceeding the allowable travel distance.
Below is an example of a scenario where occupancy calculation ( quantity of occupants) didn’t trigger a second exit. Travel distance triggered a second exit.
Storage spaces, Warehouses, manufacturing, Agricultural building etc. which are low in occupancy quantities will require a 2nd exit if travel distance allowable is exceeded.
The Common Path of Travel is the distance an occupant must travel to exit a building. In some scenarios, occupancy calculations dictate that a 2nd exit is required. Where occupancy quantities are low and the Common Path of Travel exceeds the distance allowable, a second exit is required.