Construction Types

Type I

• IA – Non-combustible and Fully Protected.
• IB – Non-combustible.

Type II

• IIA – Non-combustible and fully protected.
• IB – Non-combustible and unprotected.

Type III

• IIIA – Non-combustible Exterior Walls fully protected.
• IIIB – Non-combustible Exterior Walls and unprotected.

Type IV

• Heavy Timber.

Type V

• VA – Combustible and fully protected.
• VB – Combustible and unprotected.