The building area method is simple and it is an easy one for projects that include only a few space types and can be easily classified as one of the building types listed in ASHRAE, Table 9.5.1. The table refers to a single lighting power allowance for ea

The building area method is simple and it is an easy one for projects that include only a few space types and can be easily classified as one of the building types listed in ASHRAE, Table 9.5.1. The table refers to a single lighting power allowance for each building type. To determine your project’s performance, compare the total allowable LPD for the building type to the installed LPD of your project.