# Occupant load question

**URL:** https://community.blackspectacles.com/t/occupant-load-question/7891
**Category:** Project Planning & Design
**Created:** [August 8, 2026, 9:48pm UTC](https://community.blackspectacles.com/t/occupant-load-question/7891 "2026-08-08T21:48:11Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![mahsa\_vanaki](https://blackspectacles.com/uploads/images/8.png) [@mahsa\_vanaki](https://community.blackspectacles.com/u/mahsa_vanaki)
#### Post date: [August 8, 2026, 9:48pm UTC](https://community.blackspectacles.com/t/occupant-load-question/7891/1 "2026-08-08T21:48:11Z")

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why is the lobby is not calculated in occupance load? the area is given 100 sf! @kiaragalicinao

question 6, real world practice PPD / calculating MEP systems, exercise A

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### Author: ![kiaragalicinao](https://yyz1.discourse-cdn.com/flex029/user_avatar/community.blackspectacles.com/kiaragalicinao/32/1607_2.png) [@kiaragalicinao](https://community.blackspectacles.com/u/kiaragalicinao)
#### Post date: [August 11, 2026, 8:21pm UTC](https://community.blackspectacles.com/t/occupant-load-question/7891/2 "2026-08-11T20:21:42Z")

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Welcome to the Black Spectacles Community @mahsa_vanaki! Thanks for writing in.

The lobby is included in this occupant load calculation of 185 total occupants. It would be considered a business space, so you’d use a load factor of 150 sf/occupant, just like you would for the other spaces and their respective load factors.

Kiara Galicinao, AIA, NCARB  
Product Coordinator  
**[Black Spectacles](https://www.blackspectacles.com/en-us/)**