# Fire wall vs fire barrier hourly rating table 706.4 vs 508.4 **URL:** \ **Category:** Project Planning & Design\ **Created:** [January 25, 2023, 7:09pm UTC](https://community.blackspectacles.com/t/fire-wall-vs-fire-barrier-hourly-rating-table-706-4-vs-508-4/4907 "2023-01-25T19:09:16Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![wildlandguy](https://blackspectacles.com/uploads/images/1.png) [@wildlandguy](https://community.blackspectacles.com/u/wildlandguy)\ **Post date:** [January 25, 2023, 7:09pm UTC](https://community.blackspectacles.com/t/fire-wall-vs-fire-barrier-hourly-rating-table-706-4-vs-508-4/4907/1 "2023-01-25T19:09:16Z")
what is the difference between Table 706.4 (Fire Wall Resistance Ratings) and Table 508.4 (Required separation of occupancies)? thank you ---
**Author:** ![coachchrishopstock](https://yyz1.discourse-cdn.com/flex029/user_avatar/community.blackspectacles.com/coachchrishopstock/32/1662_2.png) [@coachchrishopstock](https://community.blackspectacles.com/u/coachchrishopstock)\ **Post date:** [January 27, 2023, 2:06pm UTC](https://community.blackspectacles.com/t/fire-wall-vs-fire-barrier-hourly-rating-table-706-4-vs-508-4/4907/2 "2023-01-27T14:06:14Z")
Hi @wildlandguy - fire walls (table 706.4) are used to separate spaces into two separate buildings - they extend from foundation to parapet. Table 508.4 is used when multiple occupancies are located in the same building, and provides the required separation between those occupancies. Hope that was helpful and good luck on your next exam! ---
**Author:** ![wildlandguy](https://blackspectacles.com/uploads/images/1.png) [@wildlandguy](https://community.blackspectacles.com/u/wildlandguy)\ **Post date:** [January 27, 2023, 9:48pm UTC](https://community.blackspectacles.com/t/fire-wall-vs-fire-barrier-hourly-rating-table-706-4-vs-508-4/4907/3 "2023-01-27T21:48:43Z")
Thank you Chris. Yes that makes it crystal clear.