Pennsylvania Code
Title 34 - LABOR AND INDUSTRY
Part I - Department of Labor and Industry
Chapter 51 - A-1 ASSEMBLY
CONSTRUCTION TYPE-MAXIMUM STORY HEIGHT
Section 51.11 - Story height
Current through Register Vol. 54, No. 38, September 21, 2024
(a) A-1 occupancies shall be governed by the story height limitations in the following table:
| Construction Type | Maximum Story Height |
| Fireresistive | No Limit |
| Noncombustible | 1 Story |
| Protected Heavy Timber | 1 Story |
| Ordinary | *Not Permitted |
| Wood Frame | *Not Permitted |
(b) *A single story shall be permitted in ordinary or wood frame construction when the building is 1-hour rated construction or totally protected by an automatic sprinkler system.
(c) An additional story shall be permitted in noncombustible and protected heavy timber construction when the building is 1-hour rated construction or totally protected by an automatic sprinkler system. The maximum story height may be increased by two stories.
(d) Noncombustible, protected heavy timber, ordinary and wood frame construction types shall be considered 1-hour rated construction when bearing walls, columns, beams, other supporting members, ceiling/roof assemblies, floor/ceiling assemblies, stairways, and other openings through floors are of 1-hour rated construction.
(e) Basement areas shall be 1-hour rated construction up to and including the floor/ceiling assembly between the basement and the first floor.
