HOME          LEED          ASHRAE          EPAct 2005         RESIDENTIAL         CONTROLS          FIND A SALES AGENT

ASHRAE 90.1-2001

Section: 9.3.1.2 - Space-By-Space Method

Toolbox

 Requirements:

Use the following steps to determine the interior lighting power allowance by the space-by-space method:

  1. Determine the appropriate building type from Table 9.3.1.2. For building types not listed, selection of a reasonably equivalent type shall be permitted.
  2. For each space enclosed by partitions 80% or greater than ceiling height, determine the gross interior floor area by measuring to the center of the partition wall. Include the floor area of balconies or other projections. Retail spaces do not have to comply with the 80% partition height requirements.
  3. Determine the interior lighting power allowance by using the columns designated space-by-space method in Table 9.3.1.2. Multiply the floor area(s) of the space(s) times the allowed lighting power density for the space type that most closely represents the proposed use of the space(s). The product is the lighting power allowance for the space(s). For space types not listed, selection of a reasonable equivalent category shall be permitted.
  4. The interior lighting power allowance is the sum of lighting power allowances of all spaces. Trade-offs among spaces are permitted provided that the total installed interior lighting power does not exceed the interior lighting power allowance.
     

Exceptions:

See Section 9.6.2 - 'Additional Interior Lighting Power' for situations where additional lighting power is allowed.

 

ASHRAE Home Site

Visual Software

Skip To Building Type:

Athletic Facility Civil Service
Convention Center Educational
Food Service Health Care
Industrial Lodging
Museum Office
Penitentiary Religious
Retail Sports Arena
Storage Theater
Transportation  
Table 9.3.1.2
Building Type

Space-by-Space Method LPDs
  Common Space Types and LPDs (watts/sq.ft)  
  Encl. Office Open Office Plan Conf., Meeting, & Multi Purpose Rooms Class, Lecture, & Training Rooms Audience Seating Area Lobby Atrium 1st 3 Floors Atrium Each Add. Floor Lounge & Recreation Dining Food Prep Restrooms Corridor / Transition Active Stairs Active Storage Inactive Storage Electrical Mech. Building Specific Space Types & LPDs (watts / sq.ft)
Athletic Facility Buildings
Gymnasium 1.5 1.3 1.5   0.5 1.8 1.3 0.2 1.4 1.4 2.2 1.0 0.7 0.9 1.1 0.3 1.3

  • Playing Area (1.9)

  • Dressing, Locker, Fitting Room (0.8)

  • Exercise Area (1.1)
Exercise Center 1.5 1.3 1.5   0.5 1.8 1.3 0.2 1.4 1.4 2.2 1.0 0.7 0.9 1.1 0.3 1.3

  • Dressing, Locker, Fitting Room (0.8)

  • Exercise Area (1.1)
Civil Service Buildings
Courthouse 1.5 1.3 1.5 1.6 1.6 1.8 1.3 0.2 1.4 1.4 2.2 1.0 0.7 0.9 1.1 0.3 1.3

  • Courtroom (2.1)

  • Confinements Cells (1.1)

  • Judges Chambers (1.1)
Police Stations 1.5 1.3 1.5 1.6 1.6 1.8 1.3 0.2 1.4 1.4 2.2 1.0 0.7 0.9 1.1 0.3 1.3

  • Police Station Lab (1.8)
Fire Stations 1.5 1.3 1.5 1.6   1.8     1.4 1.4 2.2 1.0 0.7 0.9 1.1 0.3 1.3

  • Engine Room (0.9)

  • Sleeping Quarters (1.1)
Post Office 1.5 1.3 1.5 1.6   1.8 1.3 0.2 1.4 1.4 2.2 1.0 0.7 0.9 1.1 0.3 1.3

  • Sorting Area (1.7)
Town Hall 1.5 1.3 1.5 1.6 1.6 1.8       1.4 2.2 1.0 0.7 0.9 1.1 0.3 1.3  
Convention Center Buildings
Convention Center 1.5 1.3 1.5 1.6 0.5 1.8 1.3 0.2 1.4 1.4 2.2 1.0 0.7 0.9 1.1 0.3 1.3

  • Exhibit Space (3.3)
Educational Buildings
School or University 1.5 1.3 1.5 1.6   1.8 1.3 0.2 1.4 1.4 2.2 1.0 0.7 0.9 1.1 0.3 1.3  
Library 1.5 1.3 1.5 1.6   1.8 1.3 0.2   1.4 2.2 1.0 0.7 0.9 1.1 0.3 1.3

  • Card Filing & Cataloging (1.4)

  • Stacks (1.9)

  • Reading Area (1.8)
Food Service Buildings
Dining: Bar Lounge/Leisure 1.5 1.3 1.5     1.8 1.3 0.2 1.4 1.2 2.2 1.0 0.7 0.9 1.1 0.3 1.3  
Dining: Family 1.5 1.3 1.5     1.8 1.3 0.2 1.4 2.2 2.2 1.0 0.7 0.9 1.1 0.3 1.3  
Dining: Cafeteria 1.5 1.3 1.5     1.8 1.3 0.2 1.4 1.4 2.2 1.0 0.7 0.9 1.1 0.3 1.3  
  Encl. Office Open Office Plan Conf., Meeting, & Multi Purpose Rooms Class, Lecture, & Training Rooms Audience Seating Area Lobby Atrium 1st 3 Floors Atrium Each Add. Floor Lounge & Recreation Dining Food Prep Restrooms Corridor / Transition Active Stairs Active Storage Inactive Storage Electrical Mech.  
Hospitals & Healthcare Buildings
Hospitals & Healthcare 1.5 1.3 1.5     1.8 1.3 0.2 1.4 1.4 2.2 1.0 1.6 0.9 2.9 0.3 1.3

  • Emergency (2.8)

  • Recovery (2.6)

  • Burses Station (1.8)

  • Exam/Treatment (1.6)

  • Pharmacy (2.3)

  • Patient Room (1.2)

  • Operating Room (7.6)

  • Nursery (1.0)

  • Medical Supply (3.0)

  • Physical therapy (1.9)

  • Radiology (0.4)

  • Laundry-Washing (0.7)
Industrial Buildings
Workshop 1.5 1.3 1.5     1.8 1.3 0.2 1.4 1.4 2.2 1.0 0.7 0.9 1.1 0.3 1.3
  • Workshop (2.5)
  • Garage Service/Repair (1.4)
  • General Low Bay (< 25' floor-to-ceiling)  (2.1)
  • General High Bay (≥ 25')
  • Detailed (6.2)
  • Equipment Room (0.8)
  • Control Room (0.5)
Automotive Facility 1.5 1.3 1.5     1.8 1.3 0.2 1.4 1.4 2.2 1.0 0.7 0.9 1.1 0.3 1.3
Manufacturing 1.5 1.3 1.5     1.8 1.3 0.2 1.4 1.4 2.2 1.0 0.5 0.9 1.1 0.3 1.3
Lodging Buildings
Hotel 1.5 1.3 1.5 1.6   1.7 1.3 0.2 1.4 1.0 2.2 1.0 0.7 0.9 1.1 0.3 1.3
  • Guest Rooms (2.5)
Motel 1.5 1.3 1.5 1.6   1.8 1.3 0.2 1.4 1.2 2.2 1.0 0.7 0.9 1.1 0.3 1.3
Multi Family 1.5 1.3 1.5     1.8 1.3 0.2 1.4 1.4 2.2 1.0 0.7 0.9 1.1 0.3 1.3  
Dormitory 1.5 1.3 1.5     1.8 1.3 0.2 1.4 1.4 2.2 1.0 0.7 0.9 1.1 0.3 1.3

  • Living Quarters (1.9)
Museum Buildings
Museum 1.5 1.3 1.5 1.6   1.8 1.3 0.2       1.0 0.7 0.9 1.4 1.4 1.3

  • General Exhibition (1.6)

  • Restoration (2.5)
  Encl. Office Open Office Plan Conf., Meeting, & Multi Purpose Rooms Class, Lecture, & Training Rooms Audience Seating Area Lobby Atrium 1st 3 Floors Atrium Each Add. Floor Lounge & Recreation Dining Food Prep Restrooms Corridor / Transition Active Stairs Active Storage Inactive Storage Electrical Mech.  
Office Buildings
Office 1.5 1.3 1.5 1.6   1.8 1.3 0.2 1.4 1.4 2.2 1.0 0.7 0.9 1.1 0.3 1.3

  • Banking Activity Area (2.4)

  • Laboratory (1.8)
Penitentiary Buildings
Penitentiary 1.5 1.3   1.4 1.9 1.8     1.4 1.4 2.2 1.0 0.7 0.9 1.1 0.3 1.3

  • Confinement Cells (1.1)
Religious Buildings
Religious Buildings 1.5 1.3 1.5 1.6 3.2 1.8 1.3 0.2 1.4   2.2 1.0 0.7 0.9 1.1 0.3 1.3

  • Worship-Pulpit, Choir (5.2)

  • Fellowship Hall (2.3)
Retail Buildings
Retail 1.5 1.3 1.5     1.8 1.3 0.2 1.4 1.4 2.2 1.0 0.7 0.9 1.1 0.3 1.3

  • General Sales Area (2.1)

  • Mall Concourse (1.8)

  • Accent Lighting, see 9.3.1.2.1(c)
Sports Arena Building
Sports Arena 1.5 1.3 1.5   0.5 1.8 1.3 0.2 1.4 1.4 2.2 1.0 0.7 0.9 1.1 0.3 1.3

  • Ring Sports Arena (3.8)

  • Court Sports Arena (4.3)

  • Indoor Playing Field Area (1.9)
Storage Buildings
Warehouse 1.5 1.3 1.5     1.8 1.3 0.2       1.0 0.7 0.9 1.1 0.3 1.3

  • Fine Material Storage (1.6)

  • Medium/Bulky Material Storage (1.1)
Parking Garage 1.5         1.8           1.0 0.7 0.9 1.1 0.3 1.3

  • Parking Area-Pedestrian (0.2)

  • Parking Area-Attendant Only (0.1)
Theater Buildings
Performing Arts 1.5       1.8 1.2 1.3 0.2 1.4     1.0 0.7 0.9 1.1 0.3 1.3  
Motion Picture         1.3 0.8     1.4     1.0 0.7 0.9 1.1 0.3 1.3  
Transportation Buildings
Transportation 1.5 1.3 1.5   1.0 1.8 1.3 0.2 1.4 1.4 2.2 1.0 0.7 0.9 1.1 0.3 1.3

  • Airport Concourse (0.7)

  • Air/Train/Bus Baggage Area (1.3)

  • Terminal - Ticket Counter (1.8)
  Encl. Office Open Office Plan Conf., Meeting, & Multi Purpose Rooms Class, Lecture, & Training Rooms Audience Seating Area Lobby Atrium 1st 3 Floors Atrium Each Add. Floor Lounge & Recreation Dining Food Prep Restrooms Corridor / Transition Active Stairs Active Storage Inactive Storage Electrical Mech.  
 

 ã Acuity Brands Lighting, Inc.     Comments   |  Site Terms