Issue link: https://www.e-digitaleditions.com/i/1132978
July/August/September 2019 I 31 any special requirements and applicable codes. In practice, creation of the OPR is a negotiation balancing the budget, schedule, potential threats, asset vulnerability and accessibility. Life safety codes and the ability of occupants to egress from spaces in an emergency is of primary concern. High risk areas may require biometric readers or two forms of authentication, adding justifiable cost (Figure 1). To complete the OPR, adjustments are required to balance risk with safety and operations. Early in design, the team develops the initial owner's project requirement (OPR), which is a document stating the requirements for each passage (door) in the project and the building operator's objectives and expectations. Typically, the OPR is prepared with input from the owner, architects, door hardware consultants, security design professionals, code authorities and the local fire department. Clear documentation of the basis of design (BOD) for systems controlling access to doors and passages should be included. It should also include BIOMETRICS IN LOGICAL ACCESS CONTROL APPLICATION FIGURE 1: An example of biometrics, used for identification, in an access control application. not work on automatic doors, and the manufacturer's representative may need to be involved. The automatic door controller would require contacts for input from the access control system as well as output to the access control system for the request to exit signal. To avoid two actions by building occupants, the owner may wish that the door opens automatically when a presented credential is authorized by the access control system. If the door is unlocked during business hours, people entering and exiting through the door would need to press the push plate or activate a motion sensor. Testing involves opening the door with a credential during hours the door is locked and utilization of the push plate or motion sensor when the door is unlocked. Close cooperation between the architect and the security system designer is necessary when incorporating access control system devices into the construction documents. Many systems may need to be integrated at each door, and each system should include the required comp- onents to fully function with other systems. It is important to document the desired door functionality under all possible circumstances for future testing and commissioning. The following integrations with the access control system may be required: Automatic Doors Adding access control to doors with an automatic opener can be complicated. Many door hardware consultants do 2. OWNER'S PROJECT REQUIREMENTS 3. CONSTRUCTION DOCUMENTS Host server with biometric templates of authorized users Authenticated at workstation prior to gaining access to network and application programs Network switch for enterprise connectivity Biometric reader integrated into workstation to allow access to secure network