Refer to the ASHRAE tables to figure out your lighting power allowances by building and space type (tables 9.5.1 for building type and 9.6.1 for space type). For each building or space type there is a corresponding LPD in the table. To calculate the light

Refer to the ASHRAE tables to figure out your lighting power allowances by building and space type (tables 9.5.1 for building type and 9.6.1 for space type). For each building or space type there is a corresponding LPD in the table. To calculate the lighting power allowance for your project or space type, multiply the LPD by the gross lighted floor area.