Design Considerations for Fire Resistance - Simplified Design of Reinforced Concrete Buildings - page 275

Standard 3-ply
built-up roofing

Mineral board

Concrete

Carb base Sil base SLW base

3

3 3

4 hr.
3
2
1

4 hr.
3
2
1

4 hr.
3
2
1

2

2 2

1

1 1

0

0 0

1 2 3 4 1 2 3 4

1 2 3 4

Thickness of concrete base slab, in.

Standard 3-ply
built-up roofing

Glass fiber board

Concrete

Carb base Sil base SLW base

3 3 3

4 hr.
3
2
1

4 hr.
3
2
1

4 hr.
3
2
1

2 2 2

1 1 1

0 0 0

1 3 5 1 3 5 1 3 5

Thickness of concrete base slab, in.

Figure 10-4 Fire Resistance Ratings for Roof Slabs with Insulating Overlays and
Standard 3-Ply Built-Up Roofing

Reference

10.1 Reinforced Concrete Fire Resistance , Concrete Reinforcing Steel Institute, Schaumburg, Illinois, 256 pp.

10.2 Standard Test Methods for Fire Test of Buildings Construction and Materials-E119-00a , American Society
of Testing and Materials, 2000.

10.3 Code Requirements for Determining Fire Resistance of Concrete and Masonry Construction Assemblies ,
ACI/TMS Standard, ACI 216.1-07/TMS-0216-07.

10.4 International Building Code , International Code Council, 2009.